./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/forester-heap/sll-queue-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 5fbdf5bf 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/forester-heap/sll-queue-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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 valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 14d581c6353338cffdb717aca448574ebb528294 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/forester-heap/sll-queue-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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 valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 14d581c6353338cffdb717aca448574ebb528294 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 16:03:19,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 16:03:19,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 16:03:19,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 16:03:19,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 16:03:19,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 16:03:19,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 16:03:19,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 16:03:19,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 16:03:19,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 16:03:19,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 16:03:19,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 16:03:19,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 16:03:19,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 16:03:19,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 16:03:19,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 16:03:19,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 16:03:19,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 16:03:19,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 16:03:19,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 16:03:19,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 16:03:19,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 16:03:19,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 16:03:19,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 16:03:19,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 16:03:19,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 16:03:19,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 16:03:19,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 16:03:19,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 16:03:19,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 16:03:19,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 16:03:19,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 16:03:19,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 16:03:19,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 16:03:19,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 16:03:19,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 16:03:19,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 16:03:19,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 16:03:19,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 16:03:19,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 16:03:19,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 16:03:19,426 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-08-30 16:03:19,459 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 16:03:19,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 16:03:19,461 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 16:03:19,461 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 16:03:19,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 16:03:19,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 16:03:19,463 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 16:03:19,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 16:03:19,463 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 16:03:19,463 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 16:03:19,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 16:03:19,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 16:03:19,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 16:03:19,465 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 16:03:19,465 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 16:03:19,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 16:03:19,465 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 16:03:19,465 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 16:03:19,465 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 16:03:19,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 16:03:19,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 16:03:19,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 16:03:19,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 16:03:19,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 16:03:19,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 16:03:19,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 16:03:19,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 16:03:19,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 16:03:19,467 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14d581c6353338cffdb717aca448574ebb528294 [2021-08-30 16:03:19,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 16:03:19,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 16:03:19,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 16:03:19,687 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 16:03:19,687 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 16:03:19,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-queue-2.i [2021-08-30 16:03:19,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64b5cb315/bd35edf2a32a4e72b00d8207422b72ed/FLAGb60b55604 [2021-08-30 16:03:20,170 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 16:03:20,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i [2021-08-30 16:03:20,184 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64b5cb315/bd35edf2a32a4e72b00d8207422b72ed/FLAGb60b55604 [2021-08-30 16:03:20,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64b5cb315/bd35edf2a32a4e72b00d8207422b72ed [2021-08-30 16:03:20,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 16:03:20,206 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 16:03:20,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 16:03:20,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 16:03:20,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 16:03:20,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:03:20" (1/1) ... [2021-08-30 16:03:20,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e56926b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:20, skipping insertion in model container [2021-08-30 16:03:20,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:03:20" (1/1) ... [2021-08-30 16:03:20,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 16:03:20,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 16:03:20,503 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-2.i[22387,22400] [2021-08-30 16:03:20,505 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-2.i[22458,22471] [2021-08-30 16:03:20,506 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-2.i[22532,22545] [2021-08-30 16:03:20,507 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-2.i[22624,22637] [2021-08-30 16:03:20,508 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-2.i[22701,22714] [2021-08-30 16:03:20,509 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-2.i[22796,22809] [2021-08-30 16:03:20,510 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-2.i[22873,22886] [2021-08-30 16:03:20,511 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-2.i[22956,22969] [2021-08-30 16:03:20,512 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-2.i[23051,23064] [2021-08-30 16:03:20,513 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-2.i[23128,23141] [2021-08-30 16:03:20,514 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-2.i[23211,23224] [2021-08-30 16:03:20,516 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-2.i[23300,23313] [2021-08-30 16:03:20,516 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-2.i[23386,23399] [2021-08-30 16:03:20,518 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-2.i[23532,23545] [2021-08-30 16:03:20,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 16:03:20,530 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 16:03:20,556 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-2.i[22387,22400] [2021-08-30 16:03:20,561 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-2.i[22458,22471] [2021-08-30 16:03:20,566 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-2.i[22532,22545] [2021-08-30 16:03:20,567 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-2.i[22624,22637] [2021-08-30 16:03:20,570 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-2.i[22701,22714] [2021-08-30 16:03:20,570 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-2.i[22796,22809] [2021-08-30 16:03:20,571 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-2.i[22873,22886] [2021-08-30 16:03:20,571 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-2.i[22956,22969] [2021-08-30 16:03:20,573 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-2.i[23051,23064] [2021-08-30 16:03:20,574 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-2.i[23128,23141] [2021-08-30 16:03:20,574 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-2.i[23211,23224] [2021-08-30 16:03:20,575 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-2.i[23300,23313] [2021-08-30 16:03:20,575 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-2.i[23386,23399] [2021-08-30 16:03:20,576 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-2.i[23532,23545] [2021-08-30 16:03:20,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 16:03:20,593 INFO L208 MainTranslator]: Completed translation [2021-08-30 16:03:20,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:20 WrapperNode [2021-08-30 16:03:20,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 16:03:20,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 16:03:20,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 16:03:20,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 16:03:20,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:20" (1/1) ... [2021-08-30 16:03:20,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:20" (1/1) ... [2021-08-30 16:03:20,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:20" (1/1) ... [2021-08-30 16:03:20,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:20" (1/1) ... [2021-08-30 16:03:20,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:20" (1/1) ... [2021-08-30 16:03:20,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:20" (1/1) ... [2021-08-30 16:03:20,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:20" (1/1) ... [2021-08-30 16:03:20,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 16:03:20,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 16:03:20,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 16:03:20,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 16:03:20,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:20" (1/1) ... [2021-08-30 16:03:20,633 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 16:03:20,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:03:20,648 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) [2021-08-30 16:03:20,653 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 [2021-08-30 16:03:20,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 16:03:20,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 16:03:20,679 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 16:03:20,679 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 16:03:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 16:03:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 16:03:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 16:03:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 16:03:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 16:03:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 16:03:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 16:03:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 16:03:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 16:03:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 16:03:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 16:03:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 16:03:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 16:03:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 16:03:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 16:03:20,681 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 16:03:20,681 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 16:03:20,681 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 16:03:20,681 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 16:03:20,682 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 16:03:20,682 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 16:03:20,682 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 16:03:20,682 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 16:03:20,682 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 16:03:20,683 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 16:03:20,683 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 16:03:20,683 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 16:03:20,683 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 16:03:20,683 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 16:03:20,683 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 16:03:20,683 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 16:03:20,683 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 16:03:20,683 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 16:03:20,684 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 16:03:20,684 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 16:03:20,684 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 16:03:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 16:03:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 16:03:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 16:03:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 16:03:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 16:03:20,686 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 16:03:20,686 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 16:03:20,686 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 16:03:20,686 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 16:03:20,686 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 16:03:20,686 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 16:03:20,687 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 16:03:20,687 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 16:03:20,687 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 16:03:20,688 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 16:03:20,688 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 16:03:20,688 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 16:03:20,688 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 16:03:20,688 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-08-30 16:03:20,688 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 16:03:20,688 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 16:03:20,688 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 16:03:20,688 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 16:03:20,688 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 16:03:20,689 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 16:03:20,689 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 16:03:20,689 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 16:03:20,689 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 16:03:20,689 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 16:03:20,689 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 16:03:20,689 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 16:03:20,689 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 16:03:20,689 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 16:03:20,690 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 16:03:20,690 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 16:03:20,690 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 16:03:20,690 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 16:03:20,690 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 16:03:20,690 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 16:03:20,690 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 16:03:20,690 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 16:03:20,691 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 16:03:20,691 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 16:03:20,691 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 16:03:20,691 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 16:03:20,691 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 16:03:20,691 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 16:03:20,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 16:03:20,692 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 16:03:20,692 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 16:03:20,692 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 16:03:20,692 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 16:03:20,692 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 16:03:20,693 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 16:03:20,693 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 16:03:20,693 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 16:03:20,693 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 16:03:20,693 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 16:03:20,693 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 16:03:20,693 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 16:03:20,693 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 16:03:20,694 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 16:03:20,694 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 16:03:20,701 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 16:03:20,702 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 16:03:20,702 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 16:03:20,702 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 16:03:20,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 16:03:20,703 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 16:03:20,703 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-30 16:03:20,703 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-30 16:03:20,703 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 16:03:20,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 16:03:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 16:03:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 16:03:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 16:03:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 16:03:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 16:03:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 16:03:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 16:03:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 16:03:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 16:03:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 16:03:21,045 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 16:03:21,046 INFO L299 CfgBuilder]: Removed 31 assume(true) statements. [2021-08-30 16:03:21,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:03:21 BoogieIcfgContainer [2021-08-30 16:03:21,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 16:03:21,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 16:03:21,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 16:03:21,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 16:03:21,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:03:20" (1/3) ... [2021-08-30 16:03:21,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15673d6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:03:21, skipping insertion in model container [2021-08-30 16:03:21,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:20" (2/3) ... [2021-08-30 16:03:21,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15673d6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:03:21, skipping insertion in model container [2021-08-30 16:03:21,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:03:21" (3/3) ... [2021-08-30 16:03:21,052 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-queue-2.i [2021-08-30 16:03:21,057 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 16:03:21,057 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2021-08-30 16:03:21,098 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 16:03:21,105 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=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-08-30 16:03:21,105 INFO L340 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2021-08-30 16:03:21,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 176 states, 101 states have (on average 2.2475247524752477) internal successors, (227), 171 states have internal predecessors, (227), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:03:21,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 16:03:21,125 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:21,125 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:21,125 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:21,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:21,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1926376585, now seen corresponding path program 1 times [2021-08-30 16:03:21,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:21,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706876938] [2021-08-30 16:03:21,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:21,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:21,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:21,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:21,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:21,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706876938] [2021-08-30 16:03:21,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706876938] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:21,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:21,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 16:03:21,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903711964] [2021-08-30 16:03:21,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 16:03:21,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:21,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 16:03:21,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:03:21,368 INFO L87 Difference]: Start difference. First operand has 176 states, 101 states have (on average 2.2475247524752477) internal successors, (227), 171 states have internal predecessors, (227), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:21,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:21,685 INFO L93 Difference]: Finished difference Result 173 states and 184 transitions. [2021-08-30 16:03:21,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 16:03:21,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 16:03:21,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:21,693 INFO L225 Difference]: With dead ends: 173 [2021-08-30 16:03:21,693 INFO L226 Difference]: Without dead ends: 169 [2021-08-30 16:03:21,694 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.58ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:03:21,696 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 159 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 203.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.86ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 267.73ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:21,697 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 8 Invalid, 376 Unknown, 0 Unchecked, 6.86ms Time], IncrementalHoareTripleChecker [13 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 267.73ms Time] [2021-08-30 16:03:21,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-08-30 16:03:21,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2021-08-30 16:03:21,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 102 states have (on average 1.7058823529411764) internal successors, (174), 161 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:21,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 177 transitions. [2021-08-30 16:03:21,724 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 177 transitions. Word has length 7 [2021-08-30 16:03:21,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:21,725 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 177 transitions. [2021-08-30 16:03:21,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:21,725 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 177 transitions. [2021-08-30 16:03:21,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 16:03:21,725 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:21,726 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:21,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 16:03:21,726 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:21,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:21,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1926376584, now seen corresponding path program 1 times [2021-08-30 16:03:21,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:21,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785020826] [2021-08-30 16:03:21,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:21,727 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:21,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:21,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:21,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:21,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785020826] [2021-08-30 16:03:21,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785020826] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:21,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:21,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 16:03:21,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553260109] [2021-08-30 16:03:21,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 16:03:21,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:21,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 16:03:21,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:03:21,791 INFO L87 Difference]: Start difference. First operand 165 states and 177 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:22,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:22,000 INFO L93 Difference]: Finished difference Result 159 states and 169 transitions. [2021-08-30 16:03:22,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 16:03:22,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 16:03:22,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:22,002 INFO L225 Difference]: With dead ends: 159 [2021-08-30 16:03:22,002 INFO L226 Difference]: Without dead ends: 159 [2021-08-30 16:03:22,002 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.99ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:03:22,003 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 147 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 157.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.99ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 198.07ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:22,003 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 7 Invalid, 348 Unknown, 0 Unchecked, 1.99ms Time], IncrementalHoareTripleChecker [12 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 198.07ms Time] [2021-08-30 16:03:22,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-08-30 16:03:22,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2021-08-30 16:03:22,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 102 states have (on average 1.5980392156862746) internal successors, (163), 151 states have internal predecessors, (163), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:22,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2021-08-30 16:03:22,014 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 7 [2021-08-30 16:03:22,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:22,014 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2021-08-30 16:03:22,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:22,022 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2021-08-30 16:03:22,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-30 16:03:22,022 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:22,023 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:22,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 16:03:22,023 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:22,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:22,025 INFO L82 PathProgramCache]: Analyzing trace with hash 2140712926, now seen corresponding path program 1 times [2021-08-30 16:03:22,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:22,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397134526] [2021-08-30 16:03:22,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:22,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:22,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:22,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:22,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:22,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397134526] [2021-08-30 16:03:22,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397134526] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:22,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:22,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 16:03:22,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106863062] [2021-08-30 16:03:22,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 16:03:22,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:22,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 16:03:22,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 16:03:22,093 INFO L87 Difference]: Start difference. First operand 155 states and 166 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:22,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:22,316 INFO L93 Difference]: Finished difference Result 165 states and 175 transitions. [2021-08-30 16:03:22,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 16:03:22,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-08-30 16:03:22,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:22,318 INFO L225 Difference]: With dead ends: 165 [2021-08-30 16:03:22,318 INFO L226 Difference]: Without dead ends: 165 [2021-08-30 16:03:22,318 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.89ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 16:03:22,318 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 260 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 155.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.15ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 200.89ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:22,319 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 10 Invalid, 390 Unknown, 0 Unchecked, 4.15ms Time], IncrementalHoareTripleChecker [13 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 200.89ms Time] [2021-08-30 16:03:22,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-08-30 16:03:22,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2021-08-30 16:03:22,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 109 states have (on average 1.5504587155963303) internal successors, (169), 153 states have internal predecessors, (169), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:22,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 172 transitions. [2021-08-30 16:03:22,324 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 172 transitions. Word has length 12 [2021-08-30 16:03:22,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:22,328 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 172 transitions. [2021-08-30 16:03:22,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:22,328 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 172 transitions. [2021-08-30 16:03:22,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-30 16:03:22,329 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:22,329 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:22,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 16:03:22,329 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:22,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:22,330 INFO L82 PathProgramCache]: Analyzing trace with hash 2140712927, now seen corresponding path program 1 times [2021-08-30 16:03:22,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:22,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602226504] [2021-08-30 16:03:22,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:22,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:22,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:22,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:22,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:22,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602226504] [2021-08-30 16:03:22,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602226504] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:22,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:22,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-30 16:03:22,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624062713] [2021-08-30 16:03:22,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 16:03:22,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:22,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 16:03:22,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-30 16:03:22,472 INFO L87 Difference]: Start difference. First operand 157 states and 172 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:22,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:22,858 INFO L93 Difference]: Finished difference Result 248 states and 264 transitions. [2021-08-30 16:03:22,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 16:03:22,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-08-30 16:03:22,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:22,860 INFO L225 Difference]: With dead ends: 248 [2021-08-30 16:03:22,860 INFO L226 Difference]: Without dead ends: 248 [2021-08-30 16:03:22,860 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 52.49ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-30 16:03:22,862 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 320 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 276.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.08ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 346.51ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:22,862 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 16 Invalid, 671 Unknown, 0 Unchecked, 3.08ms Time], IncrementalHoareTripleChecker [10 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 346.51ms Time] [2021-08-30 16:03:22,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-08-30 16:03:22,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 162. [2021-08-30 16:03:22,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 114 states have (on average 1.5263157894736843) internal successors, (174), 158 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:22,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 177 transitions. [2021-08-30 16:03:22,868 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 177 transitions. Word has length 12 [2021-08-30 16:03:22,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:22,868 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 177 transitions. [2021-08-30 16:03:22,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:22,869 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 177 transitions. [2021-08-30 16:03:22,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-30 16:03:22,869 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:22,869 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:22,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-30 16:03:22,869 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr18ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:22,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:22,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1937591901, now seen corresponding path program 1 times [2021-08-30 16:03:22,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:22,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790262415] [2021-08-30 16:03:22,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:22,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:22,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:22,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:22,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:22,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790262415] [2021-08-30 16:03:22,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790262415] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:22,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:22,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 16:03:22,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329224261] [2021-08-30 16:03:22,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 16:03:22,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:22,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 16:03:22,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:03:22,926 INFO L87 Difference]: Start difference. First operand 162 states and 177 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:23,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:23,085 INFO L93 Difference]: Finished difference Result 152 states and 166 transitions. [2021-08-30 16:03:23,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 16:03:23,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-08-30 16:03:23,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:23,086 INFO L225 Difference]: With dead ends: 152 [2021-08-30 16:03:23,086 INFO L226 Difference]: Without dead ends: 152 [2021-08-30 16:03:23,086 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.83ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:03:23,086 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 125 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 116.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.19ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 152.30ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:23,087 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 7 Invalid, 312 Unknown, 0 Unchecked, 1.19ms Time], IncrementalHoareTripleChecker [6 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 152.30ms Time] [2021-08-30 16:03:23,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-08-30 16:03:23,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-08-30 16:03:23,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 109 states have (on average 1.4954128440366972) internal successors, (163), 148 states have internal predecessors, (163), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:23,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 166 transitions. [2021-08-30 16:03:23,096 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 166 transitions. Word has length 13 [2021-08-30 16:03:23,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:23,096 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 166 transitions. [2021-08-30 16:03:23,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:23,096 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 166 transitions. [2021-08-30 16:03:23,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-30 16:03:23,097 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:23,097 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:23,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-30 16:03:23,097 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:23,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:23,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1579051744, now seen corresponding path program 1 times [2021-08-30 16:03:23,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:23,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255364970] [2021-08-30 16:03:23,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:23,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:23,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:23,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:23,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:23,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255364970] [2021-08-30 16:03:23,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255364970] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:23,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:23,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-30 16:03:23,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176117087] [2021-08-30 16:03:23,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 16:03:23,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:23,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 16:03:23,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-30 16:03:23,159 INFO L87 Difference]: Start difference. First operand 152 states and 166 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:23,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:23,621 INFO L93 Difference]: Finished difference Result 223 states and 238 transitions. [2021-08-30 16:03:23,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 16:03:23,622 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-08-30 16:03:23,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:23,623 INFO L225 Difference]: With dead ends: 223 [2021-08-30 16:03:23,623 INFO L226 Difference]: Without dead ends: 223 [2021-08-30 16:03:23,623 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 37.84ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-08-30 16:03:23,623 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 110 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 335.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.10ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 424.52ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:23,623 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 16 Invalid, 1237 Unknown, 0 Unchecked, 4.10ms Time], IncrementalHoareTripleChecker [5 Valid, 1232 Invalid, 0 Unknown, 0 Unchecked, 424.52ms Time] [2021-08-30 16:03:23,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-08-30 16:03:23,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 151. [2021-08-30 16:03:23,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 109 states have (on average 1.4862385321100917) internal successors, (162), 147 states have internal predecessors, (162), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:23,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 165 transitions. [2021-08-30 16:03:23,628 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 165 transitions. Word has length 16 [2021-08-30 16:03:23,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:23,628 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 165 transitions. [2021-08-30 16:03:23,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:23,628 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 165 transitions. [2021-08-30 16:03:23,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-30 16:03:23,628 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:23,628 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:23,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-30 16:03:23,628 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:23,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:23,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1579051743, now seen corresponding path program 1 times [2021-08-30 16:03:23,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:23,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846406490] [2021-08-30 16:03:23,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:23,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:23,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:23,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:23,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:23,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846406490] [2021-08-30 16:03:23,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846406490] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:23,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:23,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-30 16:03:23,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459500804] [2021-08-30 16:03:23,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 16:03:23,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:23,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 16:03:23,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-30 16:03:23,693 INFO L87 Difference]: Start difference. First operand 151 states and 165 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:24,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:24,190 INFO L93 Difference]: Finished difference Result 215 states and 232 transitions. [2021-08-30 16:03:24,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 16:03:24,191 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-08-30 16:03:24,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:24,192 INFO L225 Difference]: With dead ends: 215 [2021-08-30 16:03:24,192 INFO L226 Difference]: Without dead ends: 215 [2021-08-30 16:03:24,192 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 66.60ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-08-30 16:03:24,192 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 97 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 352.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.86ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 437.66ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:24,192 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 16 Invalid, 1199 Unknown, 0 Unchecked, 3.86ms Time], IncrementalHoareTripleChecker [7 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 437.66ms Time] [2021-08-30 16:03:24,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-08-30 16:03:24,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 140. [2021-08-30 16:03:24,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 104 states have (on average 1.4423076923076923) internal successors, (150), 136 states have internal predecessors, (150), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:24,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 153 transitions. [2021-08-30 16:03:24,196 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 153 transitions. Word has length 16 [2021-08-30 16:03:24,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:24,196 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 153 transitions. [2021-08-30 16:03:24,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:24,196 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 153 transitions. [2021-08-30 16:03:24,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-30 16:03:24,197 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:24,197 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:24,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-30 16:03:24,197 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:24,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:24,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1760689906, now seen corresponding path program 1 times [2021-08-30 16:03:24,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:24,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131970106] [2021-08-30 16:03:24,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:24,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:24,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:24,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:24,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:24,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131970106] [2021-08-30 16:03:24,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131970106] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:24,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:24,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 16:03:24,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808996948] [2021-08-30 16:03:24,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 16:03:24,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:24,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 16:03:24,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:03:24,236 INFO L87 Difference]: Start difference. First operand 140 states and 153 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:24,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:24,420 INFO L93 Difference]: Finished difference Result 195 states and 215 transitions. [2021-08-30 16:03:24,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 16:03:24,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-08-30 16:03:24,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:24,423 INFO L225 Difference]: With dead ends: 195 [2021-08-30 16:03:24,423 INFO L226 Difference]: Without dead ends: 195 [2021-08-30 16:03:24,423 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.57ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:03:24,423 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 47 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 139.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.23ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 177.08ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:24,424 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 7 Invalid, 416 Unknown, 0 Unchecked, 1.23ms Time], IncrementalHoareTripleChecker [5 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 177.08ms Time] [2021-08-30 16:03:24,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-08-30 16:03:24,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 153. [2021-08-30 16:03:24,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 117 states have (on average 1.4017094017094016) internal successors, (164), 149 states have internal predecessors, (164), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:24,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 167 transitions. [2021-08-30 16:03:24,428 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 167 transitions. Word has length 19 [2021-08-30 16:03:24,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:24,429 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 167 transitions. [2021-08-30 16:03:24,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:24,429 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 167 transitions. [2021-08-30 16:03:24,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-30 16:03:24,430 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:24,430 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:24,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-30 16:03:24,431 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr17ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:24,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:24,431 INFO L82 PathProgramCache]: Analyzing trace with hash -555742479, now seen corresponding path program 1 times [2021-08-30 16:03:24,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:24,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904025628] [2021-08-30 16:03:24,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:24,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:24,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:24,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:24,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:24,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904025628] [2021-08-30 16:03:24,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904025628] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:24,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:24,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-30 16:03:24,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188224474] [2021-08-30 16:03:24,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 16:03:24,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:24,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 16:03:24,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-30 16:03:24,492 INFO L87 Difference]: Start difference. First operand 153 states and 167 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:24,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:24,825 INFO L93 Difference]: Finished difference Result 153 states and 167 transitions. [2021-08-30 16:03:24,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 16:03:24,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-08-30 16:03:24,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:24,826 INFO L225 Difference]: With dead ends: 153 [2021-08-30 16:03:24,826 INFO L226 Difference]: Without dead ends: 153 [2021-08-30 16:03:24,826 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 52.05ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-08-30 16:03:24,827 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 90 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 236.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.37ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 286.18ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:24,827 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 16 Invalid, 793 Unknown, 0 Unchecked, 2.37ms Time], IncrementalHoareTripleChecker [2 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 286.18ms Time] [2021-08-30 16:03:24,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-08-30 16:03:24,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 151. [2021-08-30 16:03:24,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 116 states have (on average 1.396551724137931) internal successors, (162), 147 states have internal predecessors, (162), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:24,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 165 transitions. [2021-08-30 16:03:24,830 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 165 transitions. Word has length 23 [2021-08-30 16:03:24,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:24,830 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 165 transitions. [2021-08-30 16:03:24,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:24,830 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 165 transitions. [2021-08-30 16:03:24,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-30 16:03:24,830 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:24,831 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:24,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-30 16:03:24,831 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr60REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:24,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:24,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1696785143, now seen corresponding path program 1 times [2021-08-30 16:03:24,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:24,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369213178] [2021-08-30 16:03:24,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:24,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:24,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:24,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:24,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:24,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369213178] [2021-08-30 16:03:24,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369213178] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:24,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:24,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 16:03:24,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143651345] [2021-08-30 16:03:24,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 16:03:24,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:24,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 16:03:24,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 16:03:24,888 INFO L87 Difference]: Start difference. First operand 151 states and 165 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:25,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:25,108 INFO L93 Difference]: Finished difference Result 184 states and 200 transitions. [2021-08-30 16:03:25,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 16:03:25,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-08-30 16:03:25,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:25,109 INFO L225 Difference]: With dead ends: 184 [2021-08-30 16:03:25,109 INFO L226 Difference]: Without dead ends: 184 [2021-08-30 16:03:25,109 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.43ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 16:03:25,110 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 32 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 161.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.74ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 207.11ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:25,110 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 10 Invalid, 546 Unknown, 0 Unchecked, 1.74ms Time], IncrementalHoareTripleChecker [6 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 207.11ms Time] [2021-08-30 16:03:25,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-08-30 16:03:25,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 162. [2021-08-30 16:03:25,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 127 states have (on average 1.3858267716535433) internal successors, (176), 158 states have internal predecessors, (176), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:25,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 179 transitions. [2021-08-30 16:03:25,113 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 179 transitions. Word has length 24 [2021-08-30 16:03:25,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:25,113 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 179 transitions. [2021-08-30 16:03:25,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:25,113 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 179 transitions. [2021-08-30 16:03:25,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-30 16:03:25,114 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:25,114 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:25,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-30 16:03:25,114 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr67ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:25,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:25,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1457853172, now seen corresponding path program 1 times [2021-08-30 16:03:25,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:25,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865374759] [2021-08-30 16:03:25,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:25,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:25,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:25,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:25,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:25,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865374759] [2021-08-30 16:03:25,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865374759] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:25,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:25,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-30 16:03:25,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107137666] [2021-08-30 16:03:25,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 16:03:25,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:25,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 16:03:25,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-30 16:03:25,192 INFO L87 Difference]: Start difference. First operand 162 states and 179 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:25,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:25,496 INFO L93 Difference]: Finished difference Result 160 states and 173 transitions. [2021-08-30 16:03:25,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 16:03:25,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-08-30 16:03:25,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:25,497 INFO L225 Difference]: With dead ends: 160 [2021-08-30 16:03:25,497 INFO L226 Difference]: Without dead ends: 160 [2021-08-30 16:03:25,498 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 40.03ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-08-30 16:03:25,498 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 218.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.08ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 274.62ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:25,498 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 16 Invalid, 822 Unknown, 0 Unchecked, 3.08ms Time], IncrementalHoareTripleChecker [8 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 274.62ms Time] [2021-08-30 16:03:25,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-08-30 16:03:25,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2021-08-30 16:03:25,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 121 states have (on average 1.371900826446281) internal successors, (166), 152 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:25,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 169 transitions. [2021-08-30 16:03:25,501 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 169 transitions. Word has length 26 [2021-08-30 16:03:25,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:25,501 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 169 transitions. [2021-08-30 16:03:25,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:25,502 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 169 transitions. [2021-08-30 16:03:25,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-30 16:03:25,502 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:25,502 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:25,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-30 16:03:25,503 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr67ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:25,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:25,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1062106762, now seen corresponding path program 1 times [2021-08-30 16:03:25,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:25,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028446533] [2021-08-30 16:03:25,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:25,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:25,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:25,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:25,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:25,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028446533] [2021-08-30 16:03:25,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028446533] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:25,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:25,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 16:03:25,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51182071] [2021-08-30 16:03:25,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 16:03:25,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:25,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 16:03:25,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 16:03:25,555 INFO L87 Difference]: Start difference. First operand 156 states and 169 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:25,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:25,760 INFO L93 Difference]: Finished difference Result 156 states and 168 transitions. [2021-08-30 16:03:25,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 16:03:25,761 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-08-30 16:03:25,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:25,762 INFO L225 Difference]: With dead ends: 156 [2021-08-30 16:03:25,762 INFO L226 Difference]: Without dead ends: 156 [2021-08-30 16:03:25,762 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 17.60ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 16:03:25,762 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 142 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 161.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.11ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 199.16ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:25,762 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 10 Invalid, 424 Unknown, 0 Unchecked, 1.11ms Time], IncrementalHoareTripleChecker [5 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 199.16ms Time] [2021-08-30 16:03:25,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-08-30 16:03:25,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-08-30 16:03:25,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 121 states have (on average 1.3636363636363635) internal successors, (165), 152 states have internal predecessors, (165), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:25,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 168 transitions. [2021-08-30 16:03:25,765 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 168 transitions. Word has length 26 [2021-08-30 16:03:25,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:25,765 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 168 transitions. [2021-08-30 16:03:25,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:25,765 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 168 transitions. [2021-08-30 16:03:25,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-30 16:03:25,766 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:25,766 INFO L513 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] [2021-08-30 16:03:25,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-30 16:03:25,766 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr64REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:25,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:25,766 INFO L82 PathProgramCache]: Analyzing trace with hash -198024619, now seen corresponding path program 1 times [2021-08-30 16:03:25,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:25,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707376257] [2021-08-30 16:03:25,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:25,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:25,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:25,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:25,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:25,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707376257] [2021-08-30 16:03:25,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707376257] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 16:03:25,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488137223] [2021-08-30 16:03:25,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:25,862 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:03:25,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:03:25,880 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) [2021-08-30 16:03:25,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-30 16:03:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:25,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-30 16:03:25,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:03:26,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-08-30 16:03:26,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-08-30 16:03:26,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:26,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:03:26,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:26,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488137223] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:03:26,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 16:03:26,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2021-08-30 16:03:26,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858215756] [2021-08-30 16:03:26,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 16:03:26,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:26,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 16:03:26,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-08-30 16:03:26,307 INFO L87 Difference]: Start difference. First operand 156 states and 168 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:26,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:26,900 INFO L93 Difference]: Finished difference Result 185 states and 201 transitions. [2021-08-30 16:03:26,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-30 16:03:26,901 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-08-30 16:03:26,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:26,901 INFO L225 Difference]: With dead ends: 185 [2021-08-30 16:03:26,901 INFO L226 Difference]: Without dead ends: 185 [2021-08-30 16:03:26,902 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 142.70ms TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-08-30 16:03:26,902 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 116 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 427.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.43ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 507.97ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:26,902 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 31 Invalid, 1413 Unknown, 0 Unchecked, 3.43ms Time], IncrementalHoareTripleChecker [18 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 507.97ms Time] [2021-08-30 16:03:26,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-08-30 16:03:26,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 166. [2021-08-30 16:03:26,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 131 states have (on average 1.3435114503816794) internal successors, (176), 162 states have internal predecessors, (176), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:26,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 179 transitions. [2021-08-30 16:03:26,905 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 179 transitions. Word has length 29 [2021-08-30 16:03:26,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:26,906 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 179 transitions. [2021-08-30 16:03:26,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:26,906 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 179 transitions. [2021-08-30 16:03:26,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-30 16:03:26,906 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:26,906 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:26,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-30 16:03:27,120 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,SelfDestructingSolverStorable12 [2021-08-30 16:03:27,121 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr69ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:27,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:27,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1843797011, now seen corresponding path program 1 times [2021-08-30 16:03:27,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:27,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356060592] [2021-08-30 16:03:27,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:27,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:27,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:27,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:27,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:27,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356060592] [2021-08-30 16:03:27,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356060592] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 16:03:27,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988476127] [2021-08-30 16:03:27,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:27,168 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:03:27,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:03:27,169 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) [2021-08-30 16:03:27,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-30 16:03:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:27,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-30 16:03:27,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:03:27,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:27,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:03:27,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:27,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988476127] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:03:27,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 16:03:27,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-08-30 16:03:27,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701331889] [2021-08-30 16:03:27,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 16:03:27,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:27,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 16:03:27,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-08-30 16:03:27,483 INFO L87 Difference]: Start difference. First operand 166 states and 179 transitions. Second operand has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:27,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:27,763 INFO L93 Difference]: Finished difference Result 176 states and 188 transitions. [2021-08-30 16:03:27,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 16:03:27,763 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-08-30 16:03:27,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:27,764 INFO L225 Difference]: With dead ends: 176 [2021-08-30 16:03:27,764 INFO L226 Difference]: Without dead ends: 157 [2021-08-30 16:03:27,765 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 67.99ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-08-30 16:03:27,765 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 20 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 192.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.78ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 253.71ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:27,765 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 8 Invalid, 816 Unknown, 0 Unchecked, 1.78ms Time], IncrementalHoareTripleChecker [5 Valid, 669 Invalid, 0 Unknown, 142 Unchecked, 253.71ms Time] [2021-08-30 16:03:27,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-08-30 16:03:27,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-08-30 16:03:27,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 122 states have (on average 1.360655737704918) internal successors, (166), 153 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:27,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 169 transitions. [2021-08-30 16:03:27,769 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 169 transitions. Word has length 30 [2021-08-30 16:03:27,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:27,769 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 169 transitions. [2021-08-30 16:03:27,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:27,769 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 169 transitions. [2021-08-30 16:03:27,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-30 16:03:27,770 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:27,770 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:27,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-30 16:03:27,987 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,SelfDestructingSolverStorable13 [2021-08-30 16:03:27,987 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:27,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:27,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1469946611, now seen corresponding path program 1 times [2021-08-30 16:03:27,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:27,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741011197] [2021-08-30 16:03:27,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:27,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:28,008 ERROR L253 erpolLogProxyWrapper]: Interpolant 10 not inductive [2021-08-30 16:03:28,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-30 16:03:28,017 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:232) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:876) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-08-30 16:03:28,020 INFO L158 Benchmark]: Toolchain (without parser) took 7814.40ms. Allocated memory was 65.0MB in the beginning and 119.5MB in the end (delta: 54.5MB). Free memory was 44.4MB in the beginning and 54.9MB in the end (delta: -10.6MB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. [2021-08-30 16:03:28,020 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 65.0MB. Free memory was 46.0MB in the beginning and 46.0MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 16:03:28,020 INFO L158 Benchmark]: CACSL2BoogieTranslator took 387.04ms. Allocated memory is still 65.0MB. Free memory was 44.2MB in the beginning and 40.0MB in the end (delta: 4.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-30 16:03:28,020 INFO L158 Benchmark]: Boogie Preprocessor took 33.97ms. Allocated memory is still 65.0MB. Free memory was 40.0MB in the beginning and 36.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 16:03:28,021 INFO L158 Benchmark]: RCFGBuilder took 418.39ms. Allocated memory is still 65.0MB. Free memory was 36.7MB in the beginning and 30.8MB in the end (delta: 6.0MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2021-08-30 16:03:28,021 INFO L158 Benchmark]: TraceAbstraction took 6971.32ms. Allocated memory was 65.0MB in the beginning and 119.5MB in the end (delta: 54.5MB). Free memory was 30.2MB in the beginning and 54.9MB in the end (delta: -24.7MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. [2021-08-30 16:03:28,022 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 65.0MB. Free memory was 46.0MB in the beginning and 46.0MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 387.04ms. Allocated memory is still 65.0MB. Free memory was 44.2MB in the beginning and 40.0MB in the end (delta: 4.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.97ms. Allocated memory is still 65.0MB. Free memory was 40.0MB in the beginning and 36.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 418.39ms. Allocated memory is still 65.0MB. Free memory was 36.7MB in the beginning and 30.8MB in the end (delta: 6.0MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * TraceAbstraction took 6971.32ms. Allocated memory was 65.0MB in the beginning and 119.5MB in the end (delta: 54.5MB). Free memory was 30.2MB in the beginning and 54.9MB in the end (delta: -24.7MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:232) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-08-30 16:03:28,045 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... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 16:03:29,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 16:03:29,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 16:03:29,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 16:03:29,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 16:03:29,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 16:03:29,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 16:03:29,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 16:03:29,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 16:03:29,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 16:03:29,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 16:03:29,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 16:03:29,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 16:03:29,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 16:03:29,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 16:03:29,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 16:03:29,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 16:03:29,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 16:03:29,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 16:03:29,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 16:03:29,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 16:03:29,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 16:03:29,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 16:03:29,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 16:03:29,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 16:03:29,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 16:03:29,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 16:03:29,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 16:03:29,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 16:03:29,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 16:03:29,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 16:03:29,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 16:03:29,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 16:03:29,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 16:03:29,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 16:03:29,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 16:03:29,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 16:03:29,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 16:03:29,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 16:03:29,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 16:03:29,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 16:03:29,674 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2021-08-30 16:03:29,701 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 16:03:29,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 16:03:29,702 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 16:03:29,702 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 16:03:29,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 16:03:29,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 16:03:29,704 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 16:03:29,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 16:03:29,704 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 16:03:29,704 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 16:03:29,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 16:03:29,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 16:03:29,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 16:03:29,705 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 16:03:29,705 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 16:03:29,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 16:03:29,706 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 16:03:29,706 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-30 16:03:29,706 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-30 16:03:29,706 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 16:03:29,706 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 16:03:29,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 16:03:29,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 16:03:29,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 16:03:29,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 16:03:29,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 16:03:29,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 16:03:29,707 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-30 16:03:29,707 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-30 16:03:29,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 16:03:29,708 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-30 16:03:29,708 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14d581c6353338cffdb717aca448574ebb528294 [2021-08-30 16:03:29,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 16:03:29,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 16:03:29,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 16:03:29,966 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 16:03:29,967 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 16:03:29,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-queue-2.i [2021-08-30 16:03:30,091 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82f007dd5/03d4d475cbc74c149ece9a35fe93e3dc/FLAG19da95c45 [2021-08-30 16:03:30,488 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 16:03:30,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i [2021-08-30 16:03:30,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82f007dd5/03d4d475cbc74c149ece9a35fe93e3dc/FLAG19da95c45 [2021-08-30 16:03:30,510 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82f007dd5/03d4d475cbc74c149ece9a35fe93e3dc [2021-08-30 16:03:30,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 16:03:30,514 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 16:03:30,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 16:03:30,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 16:03:30,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 16:03:30,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:03:30" (1/1) ... [2021-08-30 16:03:30,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d1455ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:30, skipping insertion in model container [2021-08-30 16:03:30,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:03:30" (1/1) ... [2021-08-30 16:03:30,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 16:03:30,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 16:03:30,732 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-2.i[22387,22400] [2021-08-30 16:03:30,735 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-2.i[22458,22471] [2021-08-30 16:03:30,735 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-2.i[22532,22545] [2021-08-30 16:03:30,736 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[22624,22637] [2021-08-30 16:03:30,737 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-2.i[22701,22714] [2021-08-30 16:03:30,737 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-2.i[22796,22809] [2021-08-30 16:03:30,738 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[22873,22886] [2021-08-30 16:03:30,738 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[22956,22969] [2021-08-30 16:03:30,739 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[23051,23064] [2021-08-30 16:03:30,740 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[23128,23141] [2021-08-30 16:03:30,740 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[23211,23224] [2021-08-30 16:03:30,741 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-2.i[23300,23313] [2021-08-30 16:03:30,742 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[23386,23399] [2021-08-30 16:03:30,743 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[23532,23545] [2021-08-30 16:03:30,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 16:03:30,753 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 16:03:30,771 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-2.i[22387,22400] [2021-08-30 16:03:30,772 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-2.i[22458,22471] [2021-08-30 16:03:30,772 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-2.i[22532,22545] [2021-08-30 16:03:30,773 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-2.i[22624,22637] [2021-08-30 16:03:30,773 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-2.i[22701,22714] [2021-08-30 16:03:30,774 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-2.i[22796,22809] [2021-08-30 16:03:30,774 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-2.i[22873,22886] [2021-08-30 16:03:30,775 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-2.i[22956,22969] [2021-08-30 16:03:30,775 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-2.i[23051,23064] [2021-08-30 16:03:30,776 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-2.i[23128,23141] [2021-08-30 16:03:30,776 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-2.i[23211,23224] [2021-08-30 16:03:30,777 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-2.i[23300,23313] [2021-08-30 16:03:30,778 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-2.i[23386,23399] [2021-08-30 16:03:30,778 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-2.i[23532,23545] [2021-08-30 16:03:30,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 16:03:30,797 INFO L208 MainTranslator]: Completed translation [2021-08-30 16:03:30,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:30 WrapperNode [2021-08-30 16:03:30,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 16:03:30,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 16:03:30,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 16:03:30,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 16:03:30,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:30" (1/1) ... [2021-08-30 16:03:30,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:30" (1/1) ... [2021-08-30 16:03:30,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:30" (1/1) ... [2021-08-30 16:03:30,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:30" (1/1) ... [2021-08-30 16:03:30,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:30" (1/1) ... [2021-08-30 16:03:30,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:30" (1/1) ... [2021-08-30 16:03:30,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:30" (1/1) ... [2021-08-30 16:03:30,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 16:03:30,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 16:03:30,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 16:03:30,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 16:03:30,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:30" (1/1) ... [2021-08-30 16:03:30,878 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 16:03:30,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:03:30,903 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) [2021-08-30 16:03:30,905 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 [2021-08-30 16:03:30,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 16:03:30,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 16:03:30,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 16:03:30,942 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 16:03:30,942 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 16:03:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 16:03:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 16:03:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 16:03:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 16:03:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 16:03:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 16:03:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 16:03:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 16:03:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 16:03:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 16:03:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 16:03:30,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 16:03:30,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 16:03:30,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 16:03:30,944 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 16:03:30,945 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 16:03:30,945 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 16:03:30,946 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 16:03:30,946 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 16:03:30,946 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 16:03:30,946 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 16:03:30,947 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 16:03:30,947 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 16:03:30,947 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 16:03:30,947 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 16:03:30,947 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 16:03:30,947 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 16:03:30,948 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 16:03:30,948 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 16:03:30,948 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 16:03:30,951 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 16:03:30,951 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 16:03:30,951 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 16:03:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 16:03:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 16:03:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 16:03:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 16:03:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 16:03:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 16:03:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 16:03:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 16:03:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 16:03:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 16:03:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 16:03:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 16:03:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 16:03:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 16:03:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 16:03:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 16:03:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 16:03:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 16:03:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 16:03:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 16:03:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 16:03:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-08-30 16:03:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 16:03:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 16:03:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 16:03:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 16:03:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 16:03:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 16:03:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 16:03:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 16:03:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 16:03:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 16:03:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 16:03:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 16:03:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 16:03:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 16:03:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 16:03:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 16:03:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 16:03:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 16:03:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 16:03:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 16:03:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 16:03:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 16:03:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 16:03:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 16:03:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 16:03:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 16:03:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 16:03:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 16:03:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 16:03:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 16:03:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 16:03:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 16:03:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 16:03:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 16:03:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 16:03:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 16:03:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 16:03:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 16:03:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 16:03:30,963 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 16:03:30,964 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 16:03:30,964 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 16:03:30,964 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 16:03:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 16:03:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 16:03:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 16:03:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 16:03:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 16:03:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 16:03:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 16:03:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-30 16:03:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-30 16:03:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 16:03:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 16:03:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 16:03:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 16:03:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 16:03:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-30 16:03:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 16:03:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-30 16:03:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 16:03:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 16:03:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-30 16:03:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 16:03:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 16:03:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-30 16:03:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-30 16:03:31,378 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 16:03:31,378 INFO L299 CfgBuilder]: Removed 31 assume(true) statements. [2021-08-30 16:03:31,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:03:31 BoogieIcfgContainer [2021-08-30 16:03:31,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 16:03:31,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 16:03:31,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 16:03:31,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 16:03:31,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:03:30" (1/3) ... [2021-08-30 16:03:31,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b1c487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:03:31, skipping insertion in model container [2021-08-30 16:03:31,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:30" (2/3) ... [2021-08-30 16:03:31,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b1c487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:03:31, skipping insertion in model container [2021-08-30 16:03:31,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:03:31" (3/3) ... [2021-08-30 16:03:31,397 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-queue-2.i [2021-08-30 16:03:31,401 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 16:03:31,401 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2021-08-30 16:03:31,426 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 16:03:31,430 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=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-08-30 16:03:31,430 INFO L340 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2021-08-30 16:03:31,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 173 states, 98 states have (on average 2.2755102040816326) internal successors, (223), 168 states have internal predecessors, (223), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:03:31,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 16:03:31,453 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:31,453 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:31,453 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:31,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:31,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1735636923, now seen corresponding path program 1 times [2021-08-30 16:03:31,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:03:31,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783868517] [2021-08-30 16:03:31,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:31,465 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:03:31,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:03:31,481 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) [2021-08-30 16:03:31,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-30 16:03:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:31,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-30 16:03:31,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:03:31,700 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 [2021-08-30 16:03:31,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:31,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:03:31,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:31,758 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:03:31,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783868517] [2021-08-30 16:03:31,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783868517] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:31,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:31,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-30 16:03:31,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686545106] [2021-08-30 16:03:31,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 16:03:31,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 16:03:31,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 16:03:31,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 16:03:31,791 INFO L87 Difference]: Start difference. First operand has 173 states, 98 states have (on average 2.2755102040816326) internal successors, (223), 168 states have internal predecessors, (223), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:32,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:32,093 INFO L93 Difference]: Finished difference Result 170 states and 180 transitions. [2021-08-30 16:03:32,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 16:03:32,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 16:03:32,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:32,105 INFO L225 Difference]: With dead ends: 170 [2021-08-30 16:03:32,105 INFO L226 Difference]: Without dead ends: 166 [2021-08-30 16:03:32,106 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.77ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 16:03:32,108 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 155 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 214.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.06ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 271.36ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:32,109 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 7 Invalid, 198 Unknown, 0 Unchecked, 3.06ms Time], IncrementalHoareTripleChecker [12 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 271.36ms Time] [2021-08-30 16:03:32,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-08-30 16:03:32,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2021-08-30 16:03:32,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 99 states have (on average 1.7171717171717171) internal successors, (170), 158 states have internal predecessors, (170), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:32,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 173 transitions. [2021-08-30 16:03:32,136 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 173 transitions. Word has length 7 [2021-08-30 16:03:32,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:32,136 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 173 transitions. [2021-08-30 16:03:32,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:32,136 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 173 transitions. [2021-08-30 16:03:32,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 16:03:32,137 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:32,137 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:32,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-08-30 16:03:32,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 16:03:32,355 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:32,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:32,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1735636922, now seen corresponding path program 1 times [2021-08-30 16:03:32,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:03:32,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068435273] [2021-08-30 16:03:32,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:32,357 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:03:32,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:03:32,359 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) [2021-08-30 16:03:32,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-30 16:03:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:32,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-30 16:03:32,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:03:32,505 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 [2021-08-30 16:03:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:32,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:03:32,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:32,573 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:03:32,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068435273] [2021-08-30 16:03:32,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068435273] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:32,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:32,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-08-30 16:03:32,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740556509] [2021-08-30 16:03:32,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 16:03:32,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 16:03:32,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 16:03:32,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:03:32,575 INFO L87 Difference]: Start difference. First operand 162 states and 173 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:32,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:32,865 INFO L93 Difference]: Finished difference Result 156 states and 165 transitions. [2021-08-30 16:03:32,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 16:03:32,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 16:03:32,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:32,867 INFO L225 Difference]: With dead ends: 156 [2021-08-30 16:03:32,867 INFO L226 Difference]: Without dead ends: 156 [2021-08-30 16:03:32,867 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.37ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:03:32,868 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 143 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 208.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.18ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 272.02ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:32,868 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 9 Invalid, 199 Unknown, 0 Unchecked, 2.18ms Time], IncrementalHoareTripleChecker [12 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 272.02ms Time] [2021-08-30 16:03:32,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-08-30 16:03:32,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 152. [2021-08-30 16:03:32,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 99 states have (on average 1.606060606060606) internal successors, (159), 148 states have internal predecessors, (159), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:32,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 162 transitions. [2021-08-30 16:03:32,875 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 162 transitions. Word has length 7 [2021-08-30 16:03:32,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:32,875 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 162 transitions. [2021-08-30 16:03:32,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:32,875 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 162 transitions. [2021-08-30 16:03:32,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-30 16:03:32,876 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:32,876 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:32,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-08-30 16:03:33,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 16:03:33,088 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:33,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:33,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1828127689, now seen corresponding path program 1 times [2021-08-30 16:03:33,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:03:33,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921613582] [2021-08-30 16:03:33,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:33,090 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:03:33,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:03:33,091 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) [2021-08-30 16:03:33,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-30 16:03:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:33,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 16:03:33,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:03:33,197 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 [2021-08-30 16:03:33,249 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-30 16:03:33,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 23 [2021-08-30 16:03:33,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:33,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:03:33,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:33,326 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:03:33,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921613582] [2021-08-30 16:03:33,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921613582] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:33,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:33,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-30 16:03:33,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915315264] [2021-08-30 16:03:33,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 16:03:33,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 16:03:33,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 16:03:33,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:03:33,327 INFO L87 Difference]: Start difference. First operand 152 states and 162 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:33,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:33,581 INFO L93 Difference]: Finished difference Result 162 states and 171 transitions. [2021-08-30 16:03:33,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 16:03:33,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-08-30 16:03:33,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:33,582 INFO L225 Difference]: With dead ends: 162 [2021-08-30 16:03:33,583 INFO L226 Difference]: Without dead ends: 162 [2021-08-30 16:03:33,583 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 8 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.87ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 16:03:33,583 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 256 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 187.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.50ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 237.30ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:33,584 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 9 Invalid, 221 Unknown, 0 Unchecked, 2.50ms Time], IncrementalHoareTripleChecker [12 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 237.30ms Time] [2021-08-30 16:03:33,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-08-30 16:03:33,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 154. [2021-08-30 16:03:33,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 106 states have (on average 1.5566037735849056) internal successors, (165), 150 states have internal predecessors, (165), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:33,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 168 transitions. [2021-08-30 16:03:33,589 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 168 transitions. Word has length 11 [2021-08-30 16:03:33,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:33,590 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 168 transitions. [2021-08-30 16:03:33,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:33,590 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 168 transitions. [2021-08-30 16:03:33,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-30 16:03:33,590 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:33,590 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:33,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-30 16:03:33,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 16:03:33,801 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:33,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:33,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1828127690, now seen corresponding path program 1 times [2021-08-30 16:03:33,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:03:33,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [8059838] [2021-08-30 16:03:33,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:33,802 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:03:33,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:03:33,803 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) [2021-08-30 16:03:33,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-30 16:03:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:33,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-30 16:03:33,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:03:33,901 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 [2021-08-30 16:03:33,944 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 16:03:33,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-08-30 16:03:33,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:33,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:03:34,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:34,149 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:03:34,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [8059838] [2021-08-30 16:03:34,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [8059838] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:34,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:34,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2021-08-30 16:03:34,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166246806] [2021-08-30 16:03:34,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 16:03:34,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 16:03:34,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 16:03:34,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-30 16:03:34,151 INFO L87 Difference]: Start difference. First operand 154 states and 168 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:34,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:34,549 INFO L93 Difference]: Finished difference Result 268 states and 290 transitions. [2021-08-30 16:03:34,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 16:03:34,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-08-30 16:03:34,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:34,551 INFO L225 Difference]: With dead ends: 268 [2021-08-30 16:03:34,551 INFO L226 Difference]: Without dead ends: 268 [2021-08-30 16:03:34,551 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 160.50ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-08-30 16:03:34,552 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 489 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 280.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.90ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 316 IncrementalHoareTripleChecker+Unchecked, 346.51ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:34,552 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 12 Invalid, 550 Unknown, 0 Unchecked, 2.90ms Time], IncrementalHoareTripleChecker [8 Valid, 226 Invalid, 0 Unknown, 316 Unchecked, 346.51ms Time] [2021-08-30 16:03:34,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-08-30 16:03:34,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 155. [2021-08-30 16:03:34,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 108 states have (on average 1.5462962962962963) internal successors, (167), 151 states have internal predecessors, (167), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:34,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 170 transitions. [2021-08-30 16:03:34,559 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 170 transitions. Word has length 11 [2021-08-30 16:03:34,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:34,560 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 170 transitions. [2021-08-30 16:03:34,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:34,560 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 170 transitions. [2021-08-30 16:03:34,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-30 16:03:34,560 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:34,560 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:34,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-30 16:03:34,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 16:03:34,769 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr18ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:34,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:34,770 INFO L82 PathProgramCache]: Analyzing trace with hash 837384167, now seen corresponding path program 1 times [2021-08-30 16:03:34,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:03:34,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724955669] [2021-08-30 16:03:34,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:34,770 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:03:34,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:03:34,771 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) [2021-08-30 16:03:34,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-30 16:03:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:34,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-30 16:03:34,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:03:34,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:34,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:03:34,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:34,894 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:03:34,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724955669] [2021-08-30 16:03:34,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724955669] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:34,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:34,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-30 16:03:34,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666611694] [2021-08-30 16:03:34,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 16:03:34,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 16:03:34,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 16:03:34,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 16:03:34,895 INFO L87 Difference]: Start difference. First operand 155 states and 170 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:35,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:35,058 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2021-08-30 16:03:35,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 16:03:35,058 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-08-30 16:03:35,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:35,059 INFO L225 Difference]: With dead ends: 145 [2021-08-30 16:03:35,059 INFO L226 Difference]: Without dead ends: 145 [2021-08-30 16:03:35,059 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.29ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 16:03:35,059 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 121 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 129.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.50ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 158.00ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:35,060 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 6 Invalid, 161 Unknown, 0 Unchecked, 0.50ms Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 158.00ms Time] [2021-08-30 16:03:35,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-08-30 16:03:35,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-08-30 16:03:35,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 103 states have (on average 1.5145631067961165) internal successors, (156), 141 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:35,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 159 transitions. [2021-08-30 16:03:35,064 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 159 transitions. Word has length 12 [2021-08-30 16:03:35,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:35,064 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 159 transitions. [2021-08-30 16:03:35,064 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:35,064 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 159 transitions. [2021-08-30 16:03:35,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-30 16:03:35,069 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:35,069 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:35,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-30 16:03:35,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 16:03:35,276 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:35,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:35,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1322768587, now seen corresponding path program 1 times [2021-08-30 16:03:35,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:03:35,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448753104] [2021-08-30 16:03:35,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:35,277 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:03:35,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:03:35,277 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) [2021-08-30 16:03:35,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-30 16:03:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:35,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-30 16:03:35,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:03:35,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 16:03:35,370 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 20 treesize of output 16 [2021-08-30 16:03:35,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2021-08-30 16:03:35,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:35,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:03:35,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:35,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:03:35,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448753104] [2021-08-30 16:03:35,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448753104] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:35,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:35,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-30 16:03:35,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879844220] [2021-08-30 16:03:35,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 16:03:35,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 16:03:35,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 16:03:35,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 16:03:35,434 INFO L87 Difference]: Start difference. First operand 145 states and 159 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:36,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:36,104 INFO L93 Difference]: Finished difference Result 216 states and 231 transitions. [2021-08-30 16:03:36,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 16:03:36,104 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-08-30 16:03:36,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:36,105 INFO L225 Difference]: With dead ends: 216 [2021-08-30 16:03:36,105 INFO L226 Difference]: Without dead ends: 216 [2021-08-30 16:03:36,105 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 44.80ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-30 16:03:36,106 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 107 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 528.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.93ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 628.72ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:36,106 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 15 Invalid, 983 Unknown, 0 Unchecked, 2.93ms Time], IncrementalHoareTripleChecker [4 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 628.72ms Time] [2021-08-30 16:03:36,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-08-30 16:03:36,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 144. [2021-08-30 16:03:36,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 103 states have (on average 1.5048543689320388) internal successors, (155), 140 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:36,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 158 transitions. [2021-08-30 16:03:36,110 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 158 transitions. Word has length 15 [2021-08-30 16:03:36,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:36,110 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 158 transitions. [2021-08-30 16:03:36,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:36,111 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 158 transitions. [2021-08-30 16:03:36,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-30 16:03:36,111 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:36,111 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:36,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-30 16:03:36,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 16:03:36,318 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:36,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:36,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1322768588, now seen corresponding path program 1 times [2021-08-30 16:03:36,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:03:36,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898714874] [2021-08-30 16:03:36,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:36,319 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:03:36,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:03:36,319 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) [2021-08-30 16:03:36,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-30 16:03:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:36,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-30 16:03:36,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:03:36,441 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 [2021-08-30 16:03:36,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 16:03:36,463 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 17 treesize of output 13 [2021-08-30 16:03:36,491 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 23 [2021-08-30 16:03:36,495 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 20 treesize of output 12 [2021-08-30 16:03:36,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:36,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:03:36,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:36,690 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:03:36,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898714874] [2021-08-30 16:03:36,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898714874] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:36,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:36,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-08-30 16:03:36,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871187610] [2021-08-30 16:03:36,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 16:03:36,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 16:03:36,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 16:03:36,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-08-30 16:03:36,691 INFO L87 Difference]: Start difference. First operand 144 states and 158 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:38,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:38,825 INFO L93 Difference]: Finished difference Result 211 states and 228 transitions. [2021-08-30 16:03:38,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 16:03:38,826 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-08-30 16:03:38,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:38,826 INFO L225 Difference]: With dead ends: 211 [2021-08-30 16:03:38,826 INFO L226 Difference]: Without dead ends: 211 [2021-08-30 16:03:38,827 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 272.74ms TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-08-30 16:03:38,827 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 189 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1740.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.78ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1969.89ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:38,828 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 21 Invalid, 1373 Unknown, 0 Unchecked, 5.78ms Time], IncrementalHoareTripleChecker [8 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 1969.89ms Time] [2021-08-30 16:03:38,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-08-30 16:03:38,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 137. [2021-08-30 16:03:38,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 101 states have (on average 1.4554455445544554) internal successors, (147), 133 states have internal predecessors, (147), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:38,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 150 transitions. [2021-08-30 16:03:38,832 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 150 transitions. Word has length 15 [2021-08-30 16:03:38,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:38,832 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 150 transitions. [2021-08-30 16:03:38,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:38,832 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 150 transitions. [2021-08-30 16:03:38,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-30 16:03:38,833 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:38,833 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:38,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-08-30 16:03:39,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 16:03:39,051 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:39,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:39,051 INFO L82 PathProgramCache]: Analyzing trace with hash 788457692, now seen corresponding path program 1 times [2021-08-30 16:03:39,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:03:39,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338146318] [2021-08-30 16:03:39,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:39,052 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:03:39,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:03:39,052 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 16:03:39,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-30 16:03:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:39,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-30 16:03:39,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:03:39,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:39,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:03:39,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:39,187 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:03:39,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338146318] [2021-08-30 16:03:39,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338146318] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:39,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:39,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-08-30 16:03:39,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569630073] [2021-08-30 16:03:39,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 16:03:39,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 16:03:39,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 16:03:39,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:03:39,189 INFO L87 Difference]: Start difference. First operand 137 states and 150 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:39,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:39,504 INFO L93 Difference]: Finished difference Result 248 states and 278 transitions. [2021-08-30 16:03:39,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 16:03:39,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-08-30 16:03:39,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:39,505 INFO L225 Difference]: With dead ends: 248 [2021-08-30 16:03:39,505 INFO L226 Difference]: Without dead ends: 248 [2021-08-30 16:03:39,505 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.05ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:03:39,506 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 152 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 253.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.21ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 305.83ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:39,506 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 9 Invalid, 369 Unknown, 0 Unchecked, 1.21ms Time], IncrementalHoareTripleChecker [11 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 305.83ms Time] [2021-08-30 16:03:39,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-08-30 16:03:39,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 164. [2021-08-30 16:03:39,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 128 states have (on average 1.390625) internal successors, (178), 160 states have internal predecessors, (178), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:39,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 181 transitions. [2021-08-30 16:03:39,510 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 181 transitions. Word has length 18 [2021-08-30 16:03:39,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:39,511 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 181 transitions. [2021-08-30 16:03:39,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:39,511 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 181 transitions. [2021-08-30 16:03:39,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-30 16:03:39,511 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:39,512 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:39,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-08-30 16:03:39,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 16:03:39,718 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr59REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:39,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:39,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1487936176, now seen corresponding path program 1 times [2021-08-30 16:03:39,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:03:39,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992385103] [2021-08-30 16:03:39,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:39,719 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:03:39,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:03:39,720 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 16:03:39,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-30 16:03:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:39,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-30 16:03:39,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:03:39,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:39,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:03:39,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:39,872 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:03:39,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992385103] [2021-08-30 16:03:39,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992385103] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:39,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:39,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-30 16:03:39,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048208325] [2021-08-30 16:03:39,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 16:03:39,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 16:03:39,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 16:03:39,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:03:39,874 INFO L87 Difference]: Start difference. First operand 164 states and 181 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:40,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:40,149 INFO L93 Difference]: Finished difference Result 195 states and 214 transitions. [2021-08-30 16:03:40,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 16:03:40,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-08-30 16:03:40,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:40,150 INFO L225 Difference]: With dead ends: 195 [2021-08-30 16:03:40,150 INFO L226 Difference]: Without dead ends: 195 [2021-08-30 16:03:40,150 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.34ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 16:03:40,151 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 31 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 219.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.94ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 265.13ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:40,151 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 9 Invalid, 403 Unknown, 0 Unchecked, 0.94ms Time], IncrementalHoareTripleChecker [5 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 265.13ms Time] [2021-08-30 16:03:40,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-08-30 16:03:40,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 173. [2021-08-30 16:03:40,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 137 states have (on average 1.3795620437956204) internal successors, (189), 169 states have internal predecessors, (189), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:40,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 192 transitions. [2021-08-30 16:03:40,163 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 192 transitions. Word has length 21 [2021-08-30 16:03:40,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:40,163 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 192 transitions. [2021-08-30 16:03:40,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:40,164 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 192 transitions. [2021-08-30 16:03:40,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-30 16:03:40,164 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:40,164 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:40,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-08-30 16:03:40,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 16:03:40,369 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr66ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:40,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:40,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1119238024, now seen corresponding path program 1 times [2021-08-30 16:03:40,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:03:40,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913719443] [2021-08-30 16:03:40,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:40,370 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:03:40,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:03:40,370 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 16:03:40,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-08-30 16:03:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:40,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-30 16:03:40,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:03:40,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:40,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:03:40,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:40,532 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:03:40,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913719443] [2021-08-30 16:03:40,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913719443] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:40,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:40,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-30 16:03:40,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713754700] [2021-08-30 16:03:40,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 16:03:40,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 16:03:40,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 16:03:40,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:03:40,533 INFO L87 Difference]: Start difference. First operand 173 states and 192 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:40,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:40,754 INFO L93 Difference]: Finished difference Result 173 states and 191 transitions. [2021-08-30 16:03:40,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 16:03:40,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-08-30 16:03:40,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:40,755 INFO L225 Difference]: With dead ends: 173 [2021-08-30 16:03:40,755 INFO L226 Difference]: Without dead ends: 173 [2021-08-30 16:03:40,755 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.75ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 16:03:40,756 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 134 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 174.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.77ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 211.82ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:40,756 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 9 Invalid, 275 Unknown, 0 Unchecked, 0.77ms Time], IncrementalHoareTripleChecker [4 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 211.82ms Time] [2021-08-30 16:03:40,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-08-30 16:03:40,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-08-30 16:03:40,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 137 states have (on average 1.3722627737226278) internal successors, (188), 169 states have internal predecessors, (188), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:40,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 191 transitions. [2021-08-30 16:03:40,760 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 191 transitions. Word has length 22 [2021-08-30 16:03:40,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:40,760 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 191 transitions. [2021-08-30 16:03:40,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:40,760 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 191 transitions. [2021-08-30 16:03:40,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-30 16:03:40,761 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:40,761 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:40,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-08-30 16:03:40,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 16:03:40,967 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr17ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:40,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:40,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1623470821, now seen corresponding path program 1 times [2021-08-30 16:03:40,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:03:40,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692445884] [2021-08-30 16:03:40,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:40,968 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:03:40,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:03:40,969 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 16:03:40,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-08-30 16:03:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:41,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-30 16:03:41,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:03:41,082 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 16 treesize of output 12 [2021-08-30 16:03:41,095 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 16 treesize of output 8 [2021-08-30 16:03:41,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:41,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:03:41,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:41,148 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:03:41,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692445884] [2021-08-30 16:03:41,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692445884] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:41,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:41,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-08-30 16:03:41,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188799783] [2021-08-30 16:03:41,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 16:03:41,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 16:03:41,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 16:03:41,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 16:03:41,149 INFO L87 Difference]: Start difference. First operand 173 states and 191 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:41,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:41,549 INFO L93 Difference]: Finished difference Result 171 states and 188 transitions. [2021-08-30 16:03:41,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 16:03:41,549 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-08-30 16:03:41,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:41,550 INFO L225 Difference]: With dead ends: 171 [2021-08-30 16:03:41,550 INFO L226 Difference]: Without dead ends: 171 [2021-08-30 16:03:41,550 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 43.19ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-08-30 16:03:41,551 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 89 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 299.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.56ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 357.39ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:41,551 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 15 Invalid, 618 Unknown, 0 Unchecked, 1.56ms Time], IncrementalHoareTripleChecker [1 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 357.39ms Time] [2021-08-30 16:03:41,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-08-30 16:03:41,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2021-08-30 16:03:41,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 136 states have (on average 1.3602941176470589) internal successors, (185), 167 states have internal predecessors, (185), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:41,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 188 transitions. [2021-08-30 16:03:41,554 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 188 transitions. Word has length 22 [2021-08-30 16:03:41,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:41,554 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 188 transitions. [2021-08-30 16:03:41,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:41,554 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 188 transitions. [2021-08-30 16:03:41,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-30 16:03:41,555 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:41,555 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:41,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-08-30 16:03:41,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 16:03:41,762 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr67ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:41,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:41,762 INFO L82 PathProgramCache]: Analyzing trace with hash -336639908, now seen corresponding path program 1 times [2021-08-30 16:03:41,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:03:41,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580240109] [2021-08-30 16:03:41,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:41,763 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:03:41,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:03:41,763 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 16:03:41,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-08-30 16:03:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:41,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-30 16:03:41,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:03:41,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:41,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:03:41,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:41,998 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:03:41,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580240109] [2021-08-30 16:03:41,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580240109] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:41,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:41,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 6 [2021-08-30 16:03:41,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944920204] [2021-08-30 16:03:41,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 16:03:41,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 16:03:41,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 16:03:41,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-30 16:03:41,999 INFO L87 Difference]: Start difference. First operand 171 states and 188 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 7 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 16:03:42,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:42,416 INFO L93 Difference]: Finished difference Result 175 states and 191 transitions. [2021-08-30 16:03:42,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 16:03:42,417 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 7 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-08-30 16:03:42,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:42,417 INFO L225 Difference]: With dead ends: 175 [2021-08-30 16:03:42,418 INFO L226 Difference]: Without dead ends: 175 [2021-08-30 16:03:42,418 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 48.99ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-30 16:03:42,418 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 158 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 316.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.51ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 381.87ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:42,418 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 8 Invalid, 430 Unknown, 0 Unchecked, 1.51ms Time], IncrementalHoareTripleChecker [5 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 381.87ms Time] [2021-08-30 16:03:42,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-08-30 16:03:42,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2021-08-30 16:03:42,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 136 states have (on average 1.3529411764705883) internal successors, (184), 167 states have internal predecessors, (184), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:42,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 187 transitions. [2021-08-30 16:03:42,422 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 187 transitions. Word has length 23 [2021-08-30 16:03:42,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:42,422 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 187 transitions. [2021-08-30 16:03:42,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 7 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 16:03:42,422 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 187 transitions. [2021-08-30 16:03:42,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-30 16:03:42,424 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:42,424 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:42,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-08-30 16:03:42,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 16:03:42,629 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr62REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:42,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:42,629 INFO L82 PathProgramCache]: Analyzing trace with hash -317481246, now seen corresponding path program 1 times [2021-08-30 16:03:42,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:03:42,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398693874] [2021-08-30 16:03:42,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:42,629 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:03:42,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:03:42,631 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 16:03:42,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-08-30 16:03:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:42,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-30 16:03:42,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:03:42,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 16:03:42,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 16:03:42,748 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-08-30 16:03:42,748 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 27 treesize of output 11 [2021-08-30 16:03:42,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:03:42,754 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 27 treesize of output 11 [2021-08-30 16:03:42,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-08-30 16:03:42,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-08-30 16:03:42,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:42,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:03:42,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:42,915 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:03:42,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398693874] [2021-08-30 16:03:42,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398693874] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:42,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:42,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-30 16:03:42,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751333571] [2021-08-30 16:03:42,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 16:03:42,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 16:03:42,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 16:03:42,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 16:03:42,916 INFO L87 Difference]: Start difference. First operand 171 states and 187 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:43,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:43,316 INFO L93 Difference]: Finished difference Result 168 states and 181 transitions. [2021-08-30 16:03:43,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 16:03:43,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-08-30 16:03:43,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:43,317 INFO L225 Difference]: With dead ends: 168 [2021-08-30 16:03:43,318 INFO L226 Difference]: Without dead ends: 168 [2021-08-30 16:03:43,318 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 31.95ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-30 16:03:43,318 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 310.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.40ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 377.30ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:43,318 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 12 Invalid, 527 Unknown, 0 Unchecked, 1.40ms Time], IncrementalHoareTripleChecker [2 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 377.30ms Time] [2021-08-30 16:03:43,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-08-30 16:03:43,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 165. [2021-08-30 16:03:43,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 130 states have (on average 1.3461538461538463) internal successors, (175), 161 states have internal predecessors, (175), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:43,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 178 transitions. [2021-08-30 16:03:43,321 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 178 transitions. Word has length 23 [2021-08-30 16:03:43,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:43,321 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 178 transitions. [2021-08-30 16:03:43,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:43,321 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 178 transitions. [2021-08-30 16:03:43,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-30 16:03:43,322 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:43,322 INFO L513 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] [2021-08-30 16:03:43,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-08-30 16:03:43,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 16:03:43,531 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr64REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:43,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:43,531 INFO L82 PathProgramCache]: Analyzing trace with hash -90396675, now seen corresponding path program 1 times [2021-08-30 16:03:43,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:03:43,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765398455] [2021-08-30 16:03:43,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:43,532 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:03:43,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:03:43,532 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 16:03:43,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-08-30 16:03:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:43,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-30 16:03:43,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:03:43,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 16:03:43,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 16:03:43,653 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-08-30 16:03:43,655 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 27 treesize of output 11 [2021-08-30 16:03:43,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:03:43,660 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 27 treesize of output 11 [2021-08-30 16:03:43,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-08-30 16:03:43,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-08-30 16:03:43,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:43,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:03:43,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:43,865 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:03:43,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765398455] [2021-08-30 16:03:43,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765398455] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:03:43,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 16:03:43,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-08-30 16:03:43,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871533947] [2021-08-30 16:03:43,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 16:03:43,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 16:03:43,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 16:03:43,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 16:03:43,866 INFO L87 Difference]: Start difference. First operand 165 states and 178 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:44,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:44,218 INFO L93 Difference]: Finished difference Result 172 states and 185 transitions. [2021-08-30 16:03:44,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 16:03:44,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-08-30 16:03:44,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:44,219 INFO L225 Difference]: With dead ends: 172 [2021-08-30 16:03:44,219 INFO L226 Difference]: Without dead ends: 172 [2021-08-30 16:03:44,219 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.96ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 16:03:44,219 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 279.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.13ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 337.82ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:44,220 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 12 Invalid, 523 Unknown, 0 Unchecked, 1.13ms Time], IncrementalHoareTripleChecker [1 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 337.82ms Time] [2021-08-30 16:03:44,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-08-30 16:03:44,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-08-30 16:03:44,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 137 states have (on average 1.3284671532846715) internal successors, (182), 168 states have internal predecessors, (182), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:44,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 185 transitions. [2021-08-30 16:03:44,223 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 185 transitions. Word has length 26 [2021-08-30 16:03:44,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:44,223 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 185 transitions. [2021-08-30 16:03:44,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:44,223 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 185 transitions. [2021-08-30 16:03:44,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-30 16:03:44,224 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:44,224 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:44,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-08-30 16:03:44,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 16:03:44,430 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr69ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:44,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:44,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1492669267, now seen corresponding path program 1 times [2021-08-30 16:03:44,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:03:44,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529071300] [2021-08-30 16:03:44,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:44,432 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:03:44,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:03:44,433 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 16:03:44,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-08-30 16:03:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:44,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-30 16:03:44,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:03:44,554 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-30 16:03:44,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-08-30 16:03:48,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:48,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:03:52,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:52,372 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:03:52,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529071300] [2021-08-30 16:03:52,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529071300] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:03:52,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 16:03:52,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2021-08-30 16:03:52,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035776733] [2021-08-30 16:03:52,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-30 16:03:52,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 16:03:52,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-30 16:03:52,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=76, Unknown=3, NotChecked=0, Total=110 [2021-08-30 16:03:52,374 INFO L87 Difference]: Start difference. First operand 172 states and 185 transitions. Second operand has 11 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 16:03:52,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:52,581 INFO L93 Difference]: Finished difference Result 174 states and 186 transitions. [2021-08-30 16:03:52,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 16:03:52,581 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2021-08-30 16:03:52,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:52,582 INFO L225 Difference]: With dead ends: 174 [2021-08-30 16:03:52,582 INFO L226 Difference]: Without dead ends: 157 [2021-08-30 16:03:52,582 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 6130.36ms TimeCoverageRelationStatistics Valid=31, Invalid=76, Unknown=3, NotChecked=0, Total=110 [2021-08-30 16:03:52,583 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 160.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.53ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 248 IncrementalHoareTripleChecker+Unchecked, 196.19ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:52,583 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 467 Unknown, 0 Unchecked, 1.53ms Time], IncrementalHoareTripleChecker [0 Valid, 219 Invalid, 0 Unknown, 248 Unchecked, 196.19ms Time] [2021-08-30 16:03:52,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-08-30 16:03:52,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-08-30 16:03:52,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 122 states have (on average 1.360655737704918) internal successors, (166), 153 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:52,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 169 transitions. [2021-08-30 16:03:52,585 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 169 transitions. Word has length 27 [2021-08-30 16:03:52,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:52,585 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 169 transitions. [2021-08-30 16:03:52,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 16:03:52,586 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 169 transitions. [2021-08-30 16:03:52,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-30 16:03:52,586 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:52,586 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:52,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-08-30 16:03:52,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 16:03:52,796 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:03:52,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:52,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1623479099, now seen corresponding path program 1 times [2021-08-30 16:03:52,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:03:52,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832221996] [2021-08-30 16:03:52,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:52,797 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:03:52,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:03:52,798 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 16:03:52,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-08-30 16:03:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:52,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-30 16:03:52,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:03:52,911 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 [2021-08-30 16:03:52,944 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 16:03:52,944 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 17 treesize of output 17 [2021-08-30 16:03:52,967 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 20 treesize of output 16 [2021-08-30 16:03:53,056 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-30 16:03:53,056 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 35 treesize of output 26 [2021-08-30 16:03:53,109 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-08-30 16:03:53,109 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 [2021-08-30 16:03:53,225 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-30 16:03:53,226 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 [2021-08-30 16:03:53,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:53,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:03:57,331 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (main_~item~0.offset (_ BitVec 32))) (not (= (select (select (store |c_#memory_$Pointer$.base| c_main_~item~0.base (store (store (select |c_#memory_$Pointer$.base| c_main_~item~0.base) main_~item~0.offset (_ bv0 32)) (bvadd (_ bv4 32) main_~item~0.offset) v_DerPreprocessor_5)) c_main_~head~0.base) c_main_~head~0.offset) (_ bv0 32)))) is different from false [2021-08-30 16:03:58,445 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (main_~item~0.offset (_ BitVec 32))) (not (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem6.base| (store (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem6.base|) main_~item~0.offset (_ bv0 32)) (bvadd (_ bv4 32) main_~item~0.offset) v_DerPreprocessor_5)) c_main_~head~0.base) c_main_~head~0.offset)))) is different from false [2021-08-30 16:03:59,518 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 1394 treesize of output 1362 [2021-08-30 16:03:59,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:59,761 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:03:59,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832221996] [2021-08-30 16:03:59,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832221996] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:03:59,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 16:03:59,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-08-30 16:03:59,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677640473] [2021-08-30 16:03:59,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-30 16:03:59,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 16:03:59,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-30 16:03:59,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=194, Unknown=3, NotChecked=58, Total=306 [2021-08-30 16:03:59,763 INFO L87 Difference]: Start difference. First operand 157 states and 169 transitions. Second operand has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:04:03,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:04:03,822 INFO L93 Difference]: Finished difference Result 176 states and 191 transitions. [2021-08-30 16:04:03,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-30 16:04:03,823 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-08-30 16:04:03,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:04:03,823 INFO L225 Difference]: With dead ends: 176 [2021-08-30 16:04:03,824 INFO L226 Difference]: Without dead ends: 176 [2021-08-30 16:04:03,824 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 9654.86ms TimeCoverageRelationStatistics Valid=117, Invalid=394, Unknown=3, NotChecked=86, Total=600 [2021-08-30 16:04:03,824 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 82 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 614.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.57ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 764 IncrementalHoareTripleChecker+Unchecked, 722.86ms IncrementalHoareTripleChecker+Time [2021-08-30 16:04:03,825 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 45 Invalid, 1698 Unknown, 0 Unchecked, 4.57ms Time], IncrementalHoareTripleChecker [12 Valid, 922 Invalid, 0 Unknown, 764 Unchecked, 722.86ms Time] [2021-08-30 16:04:03,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-08-30 16:04:03,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 171. [2021-08-30 16:04:03,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 136 states have (on average 1.338235294117647) internal successors, (182), 167 states have internal predecessors, (182), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:04:03,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 185 transitions. [2021-08-30 16:04:03,829 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 185 transitions. Word has length 31 [2021-08-30 16:04:03,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:04:03,829 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 185 transitions. [2021-08-30 16:04:03,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:04:03,829 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 185 transitions. [2021-08-30 16:04:03,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-30 16:04:03,832 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:04:03,832 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:04:03,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-08-30 16:04:04,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 16:04:04,039 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr26ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:04:04,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:04:04,039 INFO L82 PathProgramCache]: Analyzing trace with hash -931329674, now seen corresponding path program 1 times [2021-08-30 16:04:04,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:04:04,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704349326] [2021-08-30 16:04:04,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:04:04,040 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:04:04,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:04:04,040 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 16:04:04,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-08-30 16:04:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:04:04,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-30 16:04:04,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:04:04,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:04:04,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:04:04,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:04:04,203 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:04:04,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704349326] [2021-08-30 16:04:04,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704349326] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 16:04:04,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:04:04,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-30 16:04:04,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84716752] [2021-08-30 16:04:04,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 16:04:04,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 16:04:04,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 16:04:04,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 16:04:04,204 INFO L87 Difference]: Start difference. First operand 171 states and 185 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:04:04,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:04:04,449 INFO L93 Difference]: Finished difference Result 213 states and 226 transitions. [2021-08-30 16:04:04,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 16:04:04,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-08-30 16:04:04,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:04:04,450 INFO L225 Difference]: With dead ends: 213 [2021-08-30 16:04:04,450 INFO L226 Difference]: Without dead ends: 213 [2021-08-30 16:04:04,450 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.75ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 16:04:04,451 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 52 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 200.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.51ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 239.82ms IncrementalHoareTripleChecker+Time [2021-08-30 16:04:04,451 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 6 Invalid, 263 Unknown, 0 Unchecked, 0.51ms Time], IncrementalHoareTripleChecker [4 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 239.82ms Time] [2021-08-30 16:04:04,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-08-30 16:04:04,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 173. [2021-08-30 16:04:04,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 138 states have (on average 1.3043478260869565) internal successors, (180), 169 states have internal predecessors, (180), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:04:04,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 183 transitions. [2021-08-30 16:04:04,454 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 183 transitions. Word has length 32 [2021-08-30 16:04:04,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:04:04,454 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 183 transitions. [2021-08-30 16:04:04,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:04:04,454 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 183 transitions. [2021-08-30 16:04:04,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-30 16:04:04,455 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:04:04,455 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:04:04,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-08-30 16:04:04,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 16:04:04,662 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr59REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:04:04,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:04:04,662 INFO L82 PathProgramCache]: Analyzing trace with hash 178014059, now seen corresponding path program 1 times [2021-08-30 16:04:04,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:04:04,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533866221] [2021-08-30 16:04:04,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:04:04,663 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:04:04,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:04:04,664 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 16:04:04,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-08-30 16:04:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:04:04,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-30 16:04:04,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:04:04,777 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 [2021-08-30 16:04:04,827 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-30 16:04:04,828 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 24 treesize of output 31 [2021-08-30 16:04:04,868 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 24 treesize of output 20 [2021-08-30 16:04:04,991 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-30 16:04:04,992 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 41 treesize of output 32 [2021-08-30 16:04:05,067 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-08-30 16:04:05,068 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 66 treesize of output 51 [2021-08-30 16:04:05,351 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-30 16:04:05,352 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 60 treesize of output 43 [2021-08-30 16:04:05,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:04:05,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:04:13,840 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_6 (_ BitVec 32)) (main_~item~0.offset (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem6.base| (store (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem6.base|) main_~item~0.offset (_ bv0 32)) (bvadd (_ bv4 32) main_~item~0.offset) v_DerPreprocessor_6)) c_main_~head~0.base) c_main_~head~0.offset)))))) (_ bv1 1)))) is different from false [2021-08-30 16:04:16,774 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 1922 treesize of output 1890 [2021-08-30 16:05:34,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:05:34,357 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:05:34,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533866221] [2021-08-30 16:05:34,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533866221] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:05:34,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 16:05:34,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-08-30 16:05:34,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608182246] [2021-08-30 16:05:34,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-30 16:05:34,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 16:05:34,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-30 16:05:34,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=326, Unknown=9, NotChecked=38, Total=462 [2021-08-30 16:05:34,358 INFO L87 Difference]: Start difference. First operand 173 states and 183 transitions. Second operand has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 22 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:05:34,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:05:34,664 INFO L93 Difference]: Finished difference Result 187 states and 201 transitions. [2021-08-30 16:05:34,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 16:05:34,664 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 22 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-08-30 16:05:34,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:05:34,665 INFO L225 Difference]: With dead ends: 187 [2021-08-30 16:05:34,665 INFO L226 Difference]: Without dead ends: 187 [2021-08-30 16:05:34,665 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 23216.29ms TimeCoverageRelationStatistics Valid=89, Invalid=326, Unknown=9, NotChecked=38, Total=462 [2021-08-30 16:05:34,666 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 53 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 243.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.64ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1036 IncrementalHoareTripleChecker+Unchecked, 280.45ms IncrementalHoareTripleChecker+Time [2021-08-30 16:05:34,666 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 39 Invalid, 1295 Unknown, 0 Unchecked, 1.64ms Time], IncrementalHoareTripleChecker [4 Valid, 255 Invalid, 0 Unknown, 1036 Unchecked, 280.45ms Time] [2021-08-30 16:05:34,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-08-30 16:05:34,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 182. [2021-08-30 16:05:34,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 147 states have (on average 1.3061224489795917) internal successors, (192), 178 states have internal predecessors, (192), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:05:34,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 195 transitions. [2021-08-30 16:05:34,669 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 195 transitions. Word has length 39 [2021-08-30 16:05:34,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:05:34,669 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 195 transitions. [2021-08-30 16:05:34,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 22 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:05:34,669 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 195 transitions. [2021-08-30 16:05:34,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-30 16:05:34,670 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:05:34,670 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:05:34,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-08-30 16:05:34,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 16:05:34,883 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr60REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:05:34,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:05:34,883 INFO L82 PathProgramCache]: Analyzing trace with hash 178014060, now seen corresponding path program 1 times [2021-08-30 16:05:34,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:05:34,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [653839030] [2021-08-30 16:05:34,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:05:34,884 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:05:34,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:05:34,884 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 16:05:34,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-08-30 16:05:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:05:34,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-30 16:05:34,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:05:34,989 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 [2021-08-30 16:05:35,035 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 [2021-08-30 16:05:35,054 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 16:05:35,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-08-30 16:05:35,090 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 21 treesize of output 17 [2021-08-30 16:05:35,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 16:05:35,229 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-30 16:05:35,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-08-30 16:05:35,251 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-30 16:05:35,251 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 36 treesize of output 27 [2021-08-30 16:05:35,353 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-08-30 16:05:35,354 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 109 treesize of output 78 [2021-08-30 16:05:35,378 INFO L354 Elim1Store]: treesize reduction 96, result has 16.5 percent of original size [2021-08-30 16:05:35,379 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 78 treesize of output 53 [2021-08-30 16:05:35,734 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-30 16:05:35,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 40 [2021-08-30 16:05:35,739 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-30 16:05:35,739 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 31 treesize of output 19 [2021-08-30 16:05:35,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:05:35,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:06:17,145 WARN L210 SmtUtils]: Spent 6.11s on a formula simplification that was a NOOP. DAG size: 44 [2021-08-30 16:06:17,171 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 394 treesize of output 378 [2021-08-30 16:06:17,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:06:17,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:06:17,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-30 16:06:17,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:06:17,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:06:17,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-30 16:06:17,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:06:17,840 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:06:17,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [653839030] [2021-08-30 16:06:17,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [653839030] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:06:17,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 16:06:17,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-08-30 16:06:17,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472736270] [2021-08-30 16:06:17,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-30 16:06:17,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 16:06:17,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-30 16:06:17,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=345, Unknown=12, NotChecked=0, Total=420 [2021-08-30 16:06:17,841 INFO L87 Difference]: Start difference. First operand 182 states and 195 transitions. Second operand has 21 states, 20 states have (on average 3.35) internal successors, (67), 21 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:06:25,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:06:25,573 INFO L93 Difference]: Finished difference Result 267 states and 281 transitions. [2021-08-30 16:06:25,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-30 16:06:25,573 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.35) internal successors, (67), 21 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-08-30 16:06:25,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:06:25,574 INFO L225 Difference]: With dead ends: 267 [2021-08-30 16:06:25,574 INFO L226 Difference]: Without dead ends: 267 [2021-08-30 16:06:25,575 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 46142.28ms TimeCoverageRelationStatistics Valid=172, Invalid=806, Unknown=14, NotChecked=0, Total=992 [2021-08-30 16:06:25,575 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 376 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2559.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.27ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 516 IncrementalHoareTripleChecker+Unchecked, 2897.26ms IncrementalHoareTripleChecker+Time [2021-08-30 16:06:25,575 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 36 Invalid, 1888 Unknown, 0 Unchecked, 8.27ms Time], IncrementalHoareTripleChecker [27 Valid, 1345 Invalid, 0 Unknown, 516 Unchecked, 2897.26ms Time] [2021-08-30 16:06:25,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-08-30 16:06:25,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 189. [2021-08-30 16:06:25,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 154 states have (on average 1.2987012987012987) internal successors, (200), 185 states have internal predecessors, (200), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:06:25,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 203 transitions. [2021-08-30 16:06:25,579 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 203 transitions. Word has length 39 [2021-08-30 16:06:25,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:06:25,579 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 203 transitions. [2021-08-30 16:06:25,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.35) internal successors, (67), 21 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:06:25,579 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 203 transitions. [2021-08-30 16:06:25,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-30 16:06:25,580 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:06:25,580 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:06:25,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-08-30 16:06:25,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 16:06:25,787 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr62REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:06:25,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:06:25,787 INFO L82 PathProgramCache]: Analyzing trace with hash -727217955, now seen corresponding path program 1 times [2021-08-30 16:06:25,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:06:25,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999646895] [2021-08-30 16:06:25,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:06:25,788 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:06:25,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:06:25,788 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 16:06:25,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-08-30 16:06:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:06:25,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-30 16:06:25,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:06:25,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:06:25,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:06:26,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:06:26,027 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:06:26,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999646895] [2021-08-30 16:06:26,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999646895] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 16:06:26,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:06:26,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-08-30 16:06:26,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004737956] [2021-08-30 16:06:26,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 16:06:26,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 16:06:26,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 16:06:26,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-30 16:06:26,029 INFO L87 Difference]: Start difference. First operand 189 states and 203 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:06:26,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:06:26,603 INFO L93 Difference]: Finished difference Result 197 states and 206 transitions. [2021-08-30 16:06:26,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 16:06:26,603 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-08-30 16:06:26,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:06:26,604 INFO L225 Difference]: With dead ends: 197 [2021-08-30 16:06:26,604 INFO L226 Difference]: Without dead ends: 197 [2021-08-30 16:06:26,604 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 22.70ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-30 16:06:26,604 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 142 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 467.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.30ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 549.97ms IncrementalHoareTripleChecker+Time [2021-08-30 16:06:26,605 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 12 Invalid, 405 Unknown, 0 Unchecked, 1.30ms Time], IncrementalHoareTripleChecker [3 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 549.97ms Time] [2021-08-30 16:06:26,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-08-30 16:06:26,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 163. [2021-08-30 16:06:26,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 130 states have (on average 1.2923076923076924) internal successors, (168), 159 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:06:26,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 171 transitions. [2021-08-30 16:06:26,607 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 171 transitions. Word has length 41 [2021-08-30 16:06:26,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:06:26,608 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 171 transitions. [2021-08-30 16:06:26,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:06:26,608 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 171 transitions. [2021-08-30 16:06:26,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-30 16:06:26,608 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:06:26,608 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:06:26,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-08-30 16:06:26,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 16:06:26,813 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr61ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:06:26,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:06:26,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1067412346, now seen corresponding path program 1 times [2021-08-30 16:06:26,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:06:26,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892944135] [2021-08-30 16:06:26,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:06:26,814 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:06:26,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:06:26,814 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 16:06:26,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-08-30 16:06:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:06:26,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-30 16:06:26,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:06:26,922 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 [2021-08-30 16:06:26,996 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 16:06:26,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-08-30 16:06:27,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 16:06:27,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-08-30 16:06:27,197 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-30 16:06:27,198 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 27 treesize of output 22 [2021-08-30 16:06:27,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:06:27,211 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 26 treesize of output 21 [2021-08-30 16:06:27,321 INFO L354 Elim1Store]: treesize reduction 112, result has 14.5 percent of original size [2021-08-30 16:06:27,322 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 [2021-08-30 16:06:27,326 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 [2021-08-30 16:06:27,351 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-08-30 16:06:27,351 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 [2021-08-30 16:06:27,716 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-30 16:06:27,716 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 [2021-08-30 16:06:27,720 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-30 16:06:27,720 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 [2021-08-30 16:06:27,816 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 [2021-08-30 16:06:27,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:06:27,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:06:28,079 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 [2021-08-30 16:06:28,903 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 336 treesize of output 328 [2021-08-30 16:06:29,392 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 165 treesize of output 161 [2021-08-30 16:06:30,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:06:30,048 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:06:30,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892944135] [2021-08-30 16:06:30,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892944135] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:06:30,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 16:06:30,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2021-08-30 16:06:30,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511469883] [2021-08-30 16:06:30,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-30 16:06:30,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 16:06:30,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-30 16:06:30,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-08-30 16:06:30,049 INFO L87 Difference]: Start difference. First operand 163 states and 171 transitions. Second operand has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:06:33,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:06:33,525 INFO L93 Difference]: Finished difference Result 253 states and 264 transitions. [2021-08-30 16:06:33,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-30 16:06:33,525 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2021-08-30 16:06:33,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:06:33,526 INFO L225 Difference]: With dead ends: 253 [2021-08-30 16:06:33,526 INFO L226 Difference]: Without dead ends: 253 [2021-08-30 16:06:33,527 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2241.17ms TimeCoverageRelationStatistics Valid=182, Invalid=1150, Unknown=0, NotChecked=0, Total=1332 [2021-08-30 16:06:33,527 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 206 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 1830 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2384.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 3030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.74ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1179 IncrementalHoareTripleChecker+Unchecked, 2707.28ms IncrementalHoareTripleChecker+Time [2021-08-30 16:06:33,527 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 60 Invalid, 3030 Unknown, 0 Unchecked, 9.74ms Time], IncrementalHoareTripleChecker [21 Valid, 1830 Invalid, 0 Unknown, 1179 Unchecked, 2707.28ms Time] [2021-08-30 16:06:33,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-08-30 16:06:33,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 163. [2021-08-30 16:06:33,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 130 states have (on average 1.2846153846153847) internal successors, (167), 159 states have internal predecessors, (167), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:06:33,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 170 transitions. [2021-08-30 16:06:33,530 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 170 transitions. Word has length 42 [2021-08-30 16:06:33,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:06:33,531 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 170 transitions. [2021-08-30 16:06:33,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:06:33,531 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 170 transitions. [2021-08-30 16:06:33,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-08-30 16:06:33,531 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:06:33,532 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:06:33,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-08-30 16:06:33,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 16:06:33,733 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr64REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:06:33,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:06:33,733 INFO L82 PathProgramCache]: Analyzing trace with hash -259639262, now seen corresponding path program 1 times [2021-08-30 16:06:33,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:06:33,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863720246] [2021-08-30 16:06:33,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:06:33,734 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:06:33,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:06:33,734 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 16:06:33,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-08-30 16:06:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:06:33,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-30 16:06:33,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:06:33,847 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 [2021-08-30 16:06:33,912 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-30 16:06:33,913 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 23 treesize of output 30 [2021-08-30 16:06:33,965 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 24 treesize of output 20 [2021-08-30 16:06:34,135 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-30 16:06:34,136 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 43 treesize of output 34 [2021-08-30 16:06:34,251 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-08-30 16:06:34,251 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 68 treesize of output 53 [2021-08-30 16:06:34,749 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-30 16:06:34,750 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 44 treesize of output 27 [2021-08-30 16:06:34,881 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-08-30 16:06:34,882 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 53 treesize of output 56 [2021-08-30 16:06:34,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:06:34,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:07:12,036 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 338 treesize of output 334 [2021-08-30 16:07:12,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:07:12,992 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:07:12,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863720246] [2021-08-30 16:07:12,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863720246] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:07:12,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 16:07:12,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2021-08-30 16:07:12,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289727034] [2021-08-30 16:07:12,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-08-30 16:07:12,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 16:07:12,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-08-30 16:07:12,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=447, Unknown=15, NotChecked=0, Total=552 [2021-08-30 16:07:12,994 INFO L87 Difference]: Start difference. First operand 163 states and 170 transitions. Second operand has 24 states, 23 states have (on average 3.347826086956522) internal successors, (77), 24 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:07:13,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:07:13,720 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2021-08-30 16:07:13,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-30 16:07:13,720 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.347826086956522) internal successors, (77), 24 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2021-08-30 16:07:13,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:07:13,721 INFO L225 Difference]: With dead ends: 176 [2021-08-30 16:07:13,721 INFO L226 Difference]: Without dead ends: 176 [2021-08-30 16:07:13,722 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 58 SyntacticMatches, 7 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 37429.91ms TimeCoverageRelationStatistics Valid=90, Invalid=447, Unknown=15, NotChecked=0, Total=552 [2021-08-30 16:07:13,722 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 53 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 629.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.48ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 664 IncrementalHoareTripleChecker+Unchecked, 708.67ms IncrementalHoareTripleChecker+Time [2021-08-30 16:07:13,722 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 30 Invalid, 1147 Unknown, 0 Unchecked, 2.48ms Time], IncrementalHoareTripleChecker [4 Valid, 479 Invalid, 0 Unknown, 664 Unchecked, 708.67ms Time] [2021-08-30 16:07:13,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-08-30 16:07:13,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 171. [2021-08-30 16:07:13,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 138 states have (on average 1.2826086956521738) internal successors, (177), 167 states have internal predecessors, (177), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:07:13,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 180 transitions. [2021-08-30 16:07:13,725 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 180 transitions. Word has length 44 [2021-08-30 16:07:13,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:07:13,725 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 180 transitions. [2021-08-30 16:07:13,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.347826086956522) internal successors, (77), 24 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:07:13,725 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 180 transitions. [2021-08-30 16:07:13,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-08-30 16:07:13,726 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:07:13,726 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:07:13,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-08-30 16:07:13,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 16:07:13,934 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr65REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:07:13,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:07:13,934 INFO L82 PathProgramCache]: Analyzing trace with hash -259639261, now seen corresponding path program 1 times [2021-08-30 16:07:13,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:07:13,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422788269] [2021-08-30 16:07:13,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:07:13,935 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:07:13,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:07:13,936 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 16:07:13,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-08-30 16:07:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:07:14,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-30 16:07:14,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:07:14,044 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 [2021-08-30 16:07:14,094 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 16:07:14,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-08-30 16:07:14,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-08-30 16:07:14,138 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 21 treesize of output 17 [2021-08-30 16:07:14,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 16:07:14,289 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-30 16:07:14,289 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 36 treesize of output 27 [2021-08-30 16:07:14,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:07:14,320 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 19 treesize of output 18 [2021-08-30 16:07:14,417 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-08-30 16:07:14,417 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 109 treesize of output 78 [2021-08-30 16:07:14,441 INFO L354 Elim1Store]: treesize reduction 96, result has 16.5 percent of original size [2021-08-30 16:07:14,441 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 78 treesize of output 53 [2021-08-30 16:07:14,863 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-30 16:07:14,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 40 [2021-08-30 16:07:14,868 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-30 16:07:14,868 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 31 treesize of output 19 [2021-08-30 16:07:14,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:07:14,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:07:29,923 WARN L210 SmtUtils]: Spent 6.13s on a formula simplification that was a NOOP. DAG size: 31 [2021-08-30 16:07:46,676 WARN L210 SmtUtils]: Spent 5.15s on a formula simplification that was a NOOP. DAG size: 31 [2021-08-30 16:07:48,705 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_subst_4 (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_main_~item~0.base) c_main_~item~0.offset))) (store |c_#memory_$Pointer$.offset| .cse1 (store (store (select |c_#memory_$Pointer$.offset| .cse1) v_subst_4 (_ bv0 32)) (bvadd (_ bv4 32) v_subst_4) v_DerPreprocessor_13))) c_main_~head~0.base) c_main_~head~0.offset))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_subst_3 (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| c_main_~item~0.base) c_main_~item~0.offset)) (.cse3 (bvadd (_ bv4 32) v_subst_3))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| .cse2 (store (store (select |c_#memory_$Pointer$.offset| .cse2) v_subst_3 (_ bv0 32)) .cse3 v_DerPreprocessor_13)) c_main_~head~0.base) c_main_~head~0.offset)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 (store (store (select |c_#memory_$Pointer$.base| .cse2) v_subst_3 (_ bv0 32)) .cse3 v_DerPreprocessor_12)) c_main_~head~0.base) c_main_~head~0.offset)))))) is different from false [2021-08-30 16:07:48,740 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 370 treesize of output 354 [2021-08-30 16:07:49,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:07:49,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:07:49,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-30 16:07:49,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:07:49,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:07:49,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-30 16:07:49,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:07:49,383 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:07:49,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422788269] [2021-08-30 16:07:49,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422788269] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:07:49,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 16:07:49,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-08-30 16:07:49,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332997742] [2021-08-30 16:07:49,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-30 16:07:49,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 16:07:49,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-30 16:07:49,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=316, Unknown=7, NotChecked=36, Total=420 [2021-08-30 16:07:49,384 INFO L87 Difference]: Start difference. First operand 171 states and 180 transitions. Second operand has 21 states, 20 states have (on average 3.85) internal successors, (77), 21 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:07:52,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:07:52,048 INFO L93 Difference]: Finished difference Result 176 states and 184 transitions. [2021-08-30 16:07:52,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-30 16:07:52,048 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.85) internal successors, (77), 21 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2021-08-30 16:07:52,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:07:52,049 INFO L225 Difference]: With dead ends: 176 [2021-08-30 16:07:52,049 INFO L226 Difference]: Without dead ends: 176 [2021-08-30 16:07:52,049 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 64 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 34595.11ms TimeCoverageRelationStatistics Valid=165, Invalid=702, Unknown=7, NotChecked=56, Total=930 [2021-08-30 16:07:52,050 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 249 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1596.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.37ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 563 IncrementalHoareTripleChecker+Unchecked, 1791.69ms IncrementalHoareTripleChecker+Time [2021-08-30 16:07:52,050 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 45 Invalid, 1514 Unknown, 0 Unchecked, 5.37ms Time], IncrementalHoareTripleChecker [22 Valid, 929 Invalid, 0 Unknown, 563 Unchecked, 1791.69ms Time] [2021-08-30 16:07:52,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-08-30 16:07:52,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 171. [2021-08-30 16:07:52,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 138 states have (on average 1.2753623188405796) internal successors, (176), 167 states have internal predecessors, (176), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:07:52,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 179 transitions. [2021-08-30 16:07:52,052 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 179 transitions. Word has length 44 [2021-08-30 16:07:52,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:07:52,053 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 179 transitions. [2021-08-30 16:07:52,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.85) internal successors, (77), 21 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:07:52,053 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 179 transitions. [2021-08-30 16:07:52,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-30 16:07:52,053 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:07:52,054 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:07:52,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-08-30 16:07:52,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 16:07:52,261 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr69ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:07:52,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:07:52,261 INFO L82 PathProgramCache]: Analyzing trace with hash 541116366, now seen corresponding path program 1 times [2021-08-30 16:07:52,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:07:52,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591750178] [2021-08-30 16:07:52,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:07:52,262 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:07:52,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:07:52,263 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 16:07:52,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-08-30 16:07:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:07:52,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-30 16:07:52,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:07:52,455 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 32 treesize of output 24 [2021-08-30 16:07:52,458 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 21 treesize of output 13 [2021-08-30 16:07:52,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 16:07:52,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:07:52,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 16:07:52,656 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:07:52,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591750178] [2021-08-30 16:07:52,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591750178] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:07:52,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 16:07:52,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-08-30 16:07:52,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251757479] [2021-08-30 16:07:52,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 16:07:52,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 16:07:52,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 16:07:52,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-30 16:07:52,657 INFO L87 Difference]: Start difference. First operand 171 states and 179 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:07:53,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:07:53,647 INFO L93 Difference]: Finished difference Result 192 states and 200 transitions. [2021-08-30 16:07:53,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 16:07:53,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-08-30 16:07:53,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:07:53,648 INFO L225 Difference]: With dead ends: 192 [2021-08-30 16:07:53,648 INFO L226 Difference]: Without dead ends: 192 [2021-08-30 16:07:53,648 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 109.77ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-30 16:07:53,649 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 157 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 819.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.37ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 923.32ms IncrementalHoareTripleChecker+Time [2021-08-30 16:07:53,649 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 18 Invalid, 650 Unknown, 0 Unchecked, 2.37ms Time], IncrementalHoareTripleChecker [4 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 923.32ms Time] [2021-08-30 16:07:53,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-08-30 16:07:53,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 187. [2021-08-30 16:07:53,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 154 states have (on average 1.2727272727272727) internal successors, (196), 183 states have internal predecessors, (196), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:07:53,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 199 transitions. [2021-08-30 16:07:53,652 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 199 transitions. Word has length 45 [2021-08-30 16:07:53,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:07:53,652 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 199 transitions. [2021-08-30 16:07:53,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:07:53,652 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 199 transitions. [2021-08-30 16:07:53,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-30 16:07:53,652 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:07:53,652 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:07:53,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-08-30 16:07:53,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 16:07:53,853 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr66ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:07:53,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:07:53,853 INFO L82 PathProgramCache]: Analyzing trace with hash -405214686, now seen corresponding path program 1 times [2021-08-30 16:07:53,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:07:53,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226862111] [2021-08-30 16:07:53,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:07:53,854 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:07:53,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:07:53,855 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 16:07:53,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-08-30 16:07:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:07:53,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-30 16:07:53,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:07:53,987 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 [2021-08-30 16:07:54,051 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 16:07:54,052 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 19 treesize of output 19 [2021-08-30 16:07:54,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 16:07:54,103 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 16 treesize of output 12 [2021-08-30 16:07:54,155 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 16 treesize of output 8 [2021-08-30 16:07:54,209 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 19 treesize of output 18 [2021-08-30 16:07:54,282 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-08-30 16:07:54,283 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 38 treesize of output 25 [2021-08-30 16:07:54,645 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-30 16:07:54,646 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 [2021-08-30 16:07:54,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:07:54,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:07:58,900 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~item~0.offset (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32))) (= (select (select (store |c_#memory_$Pointer$.offset| c_main_~item~0.base (store (store (select |c_#memory_$Pointer$.offset| c_main_~item~0.base) main_~item~0.offset (_ bv0 32)) (bvadd (_ bv4 32) main_~item~0.offset) v_DerPreprocessor_14)) c_main_~head~0.base) c_main_~head~0.offset) (_ bv0 32))) is different from false [2021-08-30 16:08:13,429 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 160 treesize of output 156 [2021-08-30 16:08:13,657 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:08:13,657 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:08:13,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226862111] [2021-08-30 16:08:13,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226862111] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:08:13,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 16:08:13,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2021-08-30 16:08:13,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791081028] [2021-08-30 16:08:13,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-30 16:08:13,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 16:08:13,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-30 16:08:13,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=250, Unknown=7, NotChecked=32, Total=342 [2021-08-30 16:08:13,659 INFO L87 Difference]: Start difference. First operand 187 states and 199 transitions. Second operand has 19 states, 18 states have (on average 4.055555555555555) internal successors, (73), 19 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:08:14,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:08:14,601 INFO L93 Difference]: Finished difference Result 189 states and 201 transitions. [2021-08-30 16:08:14,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-30 16:08:14,602 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.055555555555555) internal successors, (73), 19 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-08-30 16:08:14,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:08:14,602 INFO L225 Difference]: With dead ends: 189 [2021-08-30 16:08:14,602 INFO L226 Difference]: Without dead ends: 189 [2021-08-30 16:08:14,603 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 19129.80ms TimeCoverageRelationStatistics Valid=130, Invalid=623, Unknown=7, NotChecked=52, Total=812 [2021-08-30 16:08:14,603 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 31 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 540.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.12ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 389 IncrementalHoareTripleChecker+Unchecked, 616.41ms IncrementalHoareTripleChecker+Time [2021-08-30 16:08:14,603 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 30 Invalid, 943 Unknown, 0 Unchecked, 2.12ms Time], IncrementalHoareTripleChecker [13 Valid, 541 Invalid, 0 Unknown, 389 Unchecked, 616.41ms Time] [2021-08-30 16:08:14,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-08-30 16:08:14,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2021-08-30 16:08:14,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 156 states have (on average 1.2692307692307692) internal successors, (198), 185 states have internal predecessors, (198), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:08:14,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 201 transitions. [2021-08-30 16:08:14,606 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 201 transitions. Word has length 46 [2021-08-30 16:08:14,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:08:14,606 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 201 transitions. [2021-08-30 16:08:14,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.055555555555555) internal successors, (73), 19 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:08:14,607 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 201 transitions. [2021-08-30 16:08:14,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-30 16:08:14,607 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:08:14,607 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:08:14,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-08-30 16:08:14,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 16:08:14,815 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr26ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-08-30 16:08:14,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:08:14,815 INFO L82 PathProgramCache]: Analyzing trace with hash -2020163193, now seen corresponding path program 1 times [2021-08-30 16:08:14,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 16:08:14,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479468548] [2021-08-30 16:08:14,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:08:14,816 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 16:08:14,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 16:08:14,816 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 16:08:14,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-08-30 16:08:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:08:14,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-30 16:08:14,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:08:14,941 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 [2021-08-30 16:08:14,990 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 16:08:14,990 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 20 treesize of output 20 [2021-08-30 16:08:15,024 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 20 treesize of output 16 [2021-08-30 16:08:15,152 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-30 16:08:15,152 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 35 treesize of output 26 [2021-08-30 16:08:15,233 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-08-30 16:08:15,233 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 [2021-08-30 16:08:15,369 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 16:08:15,369 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 18 treesize of output 18 [2021-08-30 16:08:15,411 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 30 treesize of output 25 [2021-08-30 16:08:15,627 INFO L354 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2021-08-30 16:08:15,627 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 51 treesize of output 48 [2021-08-30 16:08:15,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 16:08:15,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1479468548] [2021-08-30 16:08:15,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 16:08:15,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [656059912] [2021-08-30 16:08:15,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:08:15,755 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-30 16:08:15,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-30 16:08:15,756 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-30 16:08:15,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-08-30 16:08:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:08:15,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-30 16:08:15,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:08:15,928 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 [2021-08-30 16:08:16,081 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 16:08:16,081 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 18 treesize of output 18 [2021-08-30 16:08:16,137 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 20 treesize of output 16 [2021-08-30 16:08:16,354 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-30 16:08:16,355 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 35 treesize of output 26 [2021-08-30 16:08:16,471 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-08-30 16:08:16,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 29 [2021-08-30 16:08:16,655 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 16:08:16,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-08-30 16:08:16,739 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-08-30 16:08:16,739 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 2 case distinctions, treesize of input 46 treesize of output 33 [2021-08-30 16:08:17,021 INFO L354 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2021-08-30 16:08:17,022 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 51 treesize of output 48 [2021-08-30 16:08:17,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 16:08:17,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491160975] [2021-08-30 16:08:17,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:08:17,184 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:08:17,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:08:17,185 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 16:08:17,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-08-30 16:08:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:08:17,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-30 16:08:17,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:08:17,315 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 16:08:17,315 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 21 treesize of output 21 [2021-08-30 16:08:17,344 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 20 treesize of output 16 [2021-08-30 16:08:17,507 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-30 16:08:17,508 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 35 treesize of output 26 [2021-08-30 16:08:17,584 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-08-30 16:08:17,584 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 [2021-08-30 16:08:17,745 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 16:08:17,746 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 17 treesize of output 17 [2021-08-30 16:08:17,764 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 30 treesize of output 25 [2021-08-30 16:08:17,895 INFO L354 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2021-08-30 16:08:17,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 48 [2021-08-30 16:08:18,007 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 16:08:18,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:08:18,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-30 16:08:18,007 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-30 16:08:18,007 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-08-30 16:08:18,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26ASSERT_VIOLATIONMEMORY_LEAK (69 of 70 remaining) [2021-08-30 16:08:18,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (68 of 70 remaining) [2021-08-30 16:08:18,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (67 of 70 remaining) [2021-08-30 16:08:18,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (66 of 70 remaining) [2021-08-30 16:08:18,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (65 of 70 remaining) [2021-08-30 16:08:18,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (64 of 70 remaining) [2021-08-30 16:08:18,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (63 of 70 remaining) [2021-08-30 16:08:18,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (62 of 70 remaining) [2021-08-30 16:08:18,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (61 of 70 remaining) [2021-08-30 16:08:18,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION (60 of 70 remaining) [2021-08-30 16:08:18,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION (59 of 70 remaining) [2021-08-30 16:08:18,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION (58 of 70 remaining) [2021-08-30 16:08:18,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION (57 of 70 remaining) [2021-08-30 16:08:18,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION (56 of 70 remaining) [2021-08-30 16:08:18,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION (55 of 70 remaining) [2021-08-30 16:08:18,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION (54 of 70 remaining) [2021-08-30 16:08:18,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION (53 of 70 remaining) [2021-08-30 16:08:18,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16ASSERT_VIOLATIONMEMORY_LEAK (52 of 70 remaining) [2021-08-30 16:08:18,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17ASSERT_VIOLATIONMEMORY_LEAK (51 of 70 remaining) [2021-08-30 16:08:18,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18ASSERT_VIOLATIONMEMORY_LEAK (50 of 70 remaining) [2021-08-30 16:08:18,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19ASSERT_VIOLATIONMEMORY_LEAK (49 of 70 remaining) [2021-08-30 16:08:18,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION (48 of 70 remaining) [2021-08-30 16:08:18,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION (47 of 70 remaining) [2021-08-30 16:08:18,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ASSERT_VIOLATIONMEMORY_LEAK (46 of 70 remaining) [2021-08-30 16:08:18,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23ASSERT_VIOLATIONMEMORY_LEAK (45 of 70 remaining) [2021-08-30 16:08:18,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION (44 of 70 remaining) [2021-08-30 16:08:18,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION (43 of 70 remaining) [2021-08-30 16:08:18,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION (42 of 70 remaining) [2021-08-30 16:08:18,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION (41 of 70 remaining) [2021-08-30 16:08:18,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION (40 of 70 remaining) [2021-08-30 16:08:18,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION (39 of 70 remaining) [2021-08-30 16:08:18,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31ASSERT_VIOLATIONMEMORY_LEAK (38 of 70 remaining) [2021-08-30 16:08:18,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32ASSERT_VIOLATIONMEMORY_LEAK (37 of 70 remaining) [2021-08-30 16:08:18,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION (36 of 70 remaining) [2021-08-30 16:08:18,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34REQUIRES_VIOLATION (35 of 70 remaining) [2021-08-30 16:08:18,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35ASSERT_VIOLATIONMEMORY_LEAK (34 of 70 remaining) [2021-08-30 16:08:18,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION (33 of 70 remaining) [2021-08-30 16:08:18,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION (32 of 70 remaining) [2021-08-30 16:08:18,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION (31 of 70 remaining) [2021-08-30 16:08:18,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION (30 of 70 remaining) [2021-08-30 16:08:18,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40ASSERT_VIOLATIONMEMORY_LEAK (29 of 70 remaining) [2021-08-30 16:08:18,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41REQUIRES_VIOLATION (28 of 70 remaining) [2021-08-30 16:08:18,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42REQUIRES_VIOLATION (27 of 70 remaining) [2021-08-30 16:08:18,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43REQUIRES_VIOLATION (26 of 70 remaining) [2021-08-30 16:08:18,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44REQUIRES_VIOLATION (25 of 70 remaining) [2021-08-30 16:08:18,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION (24 of 70 remaining) [2021-08-30 16:08:18,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46REQUIRES_VIOLATION (23 of 70 remaining) [2021-08-30 16:08:18,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47ASSERT_VIOLATIONMEMORY_LEAK (22 of 70 remaining) [2021-08-30 16:08:18,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48REQUIRES_VIOLATION (21 of 70 remaining) [2021-08-30 16:08:18,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION (20 of 70 remaining) [2021-08-30 16:08:18,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION (19 of 70 remaining) [2021-08-30 16:08:18,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51REQUIRES_VIOLATION (18 of 70 remaining) [2021-08-30 16:08:18,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52REQUIRES_VIOLATION (17 of 70 remaining) [2021-08-30 16:08:18,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53REQUIRES_VIOLATION (16 of 70 remaining) [2021-08-30 16:08:18,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54REQUIRES_VIOLATION (15 of 70 remaining) [2021-08-30 16:08:18,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr55REQUIRES_VIOLATION (14 of 70 remaining) [2021-08-30 16:08:18,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr56ASSERT_VIOLATIONMEMORY_LEAK (13 of 70 remaining) [2021-08-30 16:08:18,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr57REQUIRES_VIOLATION (12 of 70 remaining) [2021-08-30 16:08:18,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr58REQUIRES_VIOLATION (11 of 70 remaining) [2021-08-30 16:08:18,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr59REQUIRES_VIOLATION (10 of 70 remaining) [2021-08-30 16:08:18,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr60REQUIRES_VIOLATION (9 of 70 remaining) [2021-08-30 16:08:18,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr61ASSERT_VIOLATIONMEMORY_LEAK (8 of 70 remaining) [2021-08-30 16:08:18,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr62REQUIRES_VIOLATION (7 of 70 remaining) [2021-08-30 16:08:18,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr63REQUIRES_VIOLATION (6 of 70 remaining) [2021-08-30 16:08:18,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr64REQUIRES_VIOLATION (5 of 70 remaining) [2021-08-30 16:08:18,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr65REQUIRES_VIOLATION (4 of 70 remaining) [2021-08-30 16:08:18,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr66ASSERT_VIOLATIONMEMORY_FREE (3 of 70 remaining) [2021-08-30 16:08:18,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr67ASSERT_VIOLATIONMEMORY_FREE (2 of 70 remaining) [2021-08-30 16:08:18,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr68ASSERT_VIOLATIONMEMORY_FREE (1 of 70 remaining) [2021-08-30 16:08:18,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr69ENSURES_VIOLATIONMEMORY_LEAK (0 of 70 remaining) [2021-08-30 16:08:18,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2021-08-30 16:08:18,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-08-30 16:08:18,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-08-30 16:08:18,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:08:18,624 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 16:08:18,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:08:18 BoogieIcfgContainer [2021-08-30 16:08:18,635 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 16:08:18,635 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 16:08:18,635 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 16:08:18,635 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 16:08:18,636 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:03:31" (3/4) ... [2021-08-30 16:08:18,637 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 16:08:18,638 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 16:08:18,638 INFO L158 Benchmark]: Toolchain (without parser) took 288124.59ms. Allocated memory was 58.7MB in the beginning and 157.3MB in the end (delta: 98.6MB). Free memory was 36.1MB in the beginning and 98.7MB in the end (delta: -62.6MB). Peak memory consumption was 35.2MB. Max. memory is 16.1GB. [2021-08-30 16:08:18,638 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 16:08:18,638 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.50ms. Allocated memory is still 58.7MB. Free memory was 36.0MB in the beginning and 32.8MB in the end (delta: 3.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-30 16:08:18,638 INFO L158 Benchmark]: Boogie Preprocessor took 66.40ms. Allocated memory is still 58.7MB. Free memory was 32.8MB in the beginning and 29.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 16:08:18,638 INFO L158 Benchmark]: RCFGBuilder took 512.90ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 29.2MB in the beginning and 47.9MB in the end (delta: -18.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-08-30 16:08:18,638 INFO L158 Benchmark]: TraceAbstraction took 287248.21ms. Allocated memory was 71.3MB in the beginning and 157.3MB in the end (delta: 86.0MB). Free memory was 47.6MB in the beginning and 99.8MB in the end (delta: -52.2MB). Peak memory consumption was 33.5MB. Max. memory is 16.1GB. [2021-08-30 16:08:18,639 INFO L158 Benchmark]: Witness Printer took 2.32ms. Allocated memory is still 157.3MB. Free memory is still 98.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 16:08:18,639 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 281.50ms. Allocated memory is still 58.7MB. Free memory was 36.0MB in the beginning and 32.8MB in the end (delta: 3.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.40ms. Allocated memory is still 58.7MB. Free memory was 32.8MB in the beginning and 29.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 512.90ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 29.2MB in the beginning and 47.9MB in the end (delta: -18.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 287248.21ms. Allocated memory was 71.3MB in the beginning and 157.3MB in the end (delta: 86.0MB). Free memory was 47.6MB in the beginning and 99.8MB in the end (delta: -52.2MB). Peak memory consumption was 33.5MB. Max. memory is 16.1GB. * Witness Printer took 2.32ms. Allocated memory is still 157.3MB. Free memory is still 98.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1037]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed 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 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 FALSE !(!status) [L1013] COND TRUE status == 1 [L1015] item->data = 2 [L1016] status = 2 [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 FALSE !(status == 1) [L1034] COND TRUE status == 2 [L1036] COND FALSE !(!(head != ((void*)0))) [L1037] EXPR head->next [L1037] COND TRUE !(head->next != ((void*)0)) [L1037] reach_error() - UnprovableResult [Line: 997]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 997]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1005]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1005]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1010]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1010]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1024]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1025]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1036]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1037]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1037]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1053]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1053]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1053]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1054]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1054]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 993]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 182 locations, 70 error locations. Started 1 CEGAR loops. OverallTime: 287198.09ms, OverallIterations: 26, TraceHistogramMax: 2, EmptinessCheckTime: 31.76ms, AutomataDifference: 28622.44ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 7.80ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3435 SdHoareTripleChecker+Valid, 17754.89ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3435 mSDsluCounter, 477 SdHoareTripleChecker+Invalid, 15359.67ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 5675 IncrementalHoareTripleChecker+Unchecked, 10427 mSDsCounter, 204 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14251 IncrementalHoareTripleChecker+Invalid, 20130 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 204 mSolverCounterUnsat, 76 mSDtfsCounter, 14251 mSolverCounterSat, 68.28ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1389 GetRequests, 1064 SyntacticMatches, 44 SemanticMatches, 281 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 179391.56ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=189occurred in iteration=19, InterpolantAutomatonStates: 215, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 106.98ms AutomataMinimizationTime, 25 MinimizatonAttempts, 655 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 153.09ms SsaConstructionTime, 641.69ms SatisfiabilityAnalysisTime, 247094.13ms InterpolantComputationTime, 663 NumberOfCodeBlocks, 663 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 1276 ConstructedInterpolants, 217 QuantifiedInterpolants, 18051 SizeOfPredicates, 127 NumberOfNonLiveVariables, 2853 ConjunctsInSsa, 206 ConjunctsInUnsatCore, 50 InterpolantComputations, 30 PerfectInterpolantSequences, 8/44 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 [2021-08-30 16:08:18,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...