./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/list-properties/list_search-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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/list-properties/list_search-1.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 04611f7cb9bdc3bfbd4f2358731c54027c595e1d .......................................................................................................................... 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_1.3.100.v20150511-1540.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/list-properties/list_search-1.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 04611f7cb9bdc3bfbd4f2358731c54027c595e1d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:19:15,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:19:15,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:19:15,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:19:15,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:19:15,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:19:15,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:19:15,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:19:15,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:19:15,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:19:15,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:19:15,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:19:15,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:19:15,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:19:15,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:19:15,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:19:15,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:19:15,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:19:15,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:19:15,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:19:15,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:19:15,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:19:15,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:19:15,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:19:15,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:19:15,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:19:15,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:19:15,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:19:15,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:19:15,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:19:15,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:19:15,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:19:15,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:19:15,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:19:15,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:19:15,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:19:15,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:19:15,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:19:15,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:19:15,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:19:15,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:19:15,667 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2020-10-20 06:19:15,689 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:19:15,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:19:15,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:19:15,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:19:15,691 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:19:15,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:19:15,692 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:19:15,692 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:19:15,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:19:15,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:19:15,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:19:15,693 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:19:15,693 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:19:15,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:19:15,694 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:19:15,694 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:19:15,694 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:19:15,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:19:15,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:19:15,695 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:19:15,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:19:15,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:19:15,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:19:15,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:19:15,696 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:19:15,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:19:15,697 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:19:15,697 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 04611f7cb9bdc3bfbd4f2358731c54027c595e1d [2020-10-20 06:19:15,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:19:15,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:19:15,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:19:15,964 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:19:15,965 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:19:15,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list_search-1.i [2020-10-20 06:19:16,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/686bcfa02/f939acd570d142dea6d65720699caae6/FLAG1d92af99f [2020-10-20 06:19:16,515 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:19:16,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_search-1.i [2020-10-20 06:19:16,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/686bcfa02/f939acd570d142dea6d65720699caae6/FLAG1d92af99f [2020-10-20 06:19:16,817 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/686bcfa02/f939acd570d142dea6d65720699caae6 [2020-10-20 06:19:16,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:19:16,825 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:19:16,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:19:16,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:19:16,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:19:16,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:19:16" (1/1) ... [2020-10-20 06:19:16,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b7544a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:16, skipping insertion in model container [2020-10-20 06:19:16,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:19:16" (1/1) ... [2020-10-20 06:19:16,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:19:16,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:19:17,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:19:17,413 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2020-10-20 06:19:17,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7f9997c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:17, skipping insertion in model container [2020-10-20 06:19:17,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:19:17,415 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2020-10-20 06:19:17,418 INFO L168 Benchmark]: Toolchain (without parser) took 595.21 ms. Allocated memory was 33.6 MB in the beginning and 43.5 MB in the end (delta: 10.0 MB). Free memory was 8.8 MB in the beginning and 23.4 MB in the end (delta: -14.5 MB). Peak memory consumption was 7.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:17,420 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 33.0 MB. Free memory was 17.4 MB in the beginning and 17.3 MB in the end (delta: 57.8 kB). Peak memory consumption was 57.8 kB. Max. memory is 14.3 GB. [2020-10-20 06:19:17,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 588.36 ms. Allocated memory was 33.6 MB in the beginning and 43.5 MB in the end (delta: 10.0 MB). Free memory was 7.9 MB in the beginning and 23.4 MB in the end (delta: -15.5 MB). Peak memory consumption was 6.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:17,426 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 33.0 MB. Free memory was 17.4 MB in the beginning and 17.3 MB in the end (delta: 57.8 kB). Peak memory consumption was 57.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 588.36 ms. Allocated memory was 33.6 MB in the beginning and 43.5 MB in the end (delta: 10.0 MB). Free memory was 7.9 MB in the beginning and 23.4 MB in the end (delta: -15.5 MB). Peak memory consumption was 6.4 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 542]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:19:19,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:19:19,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:19:19,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:19:19,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:19:19,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:19:19,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:19:19,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:19:19,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:19:19,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:19:19,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:19:19,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:19:19,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:19:19,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:19:19,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:19:19,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:19:19,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:19:19,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:19:19,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:19:19,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:19:19,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:19:19,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:19:19,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:19:19,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:19:19,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:19:19,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:19:19,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:19:19,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:19:19,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:19:19,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:19:19,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:19:19,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:19:19,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:19:19,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:19:19,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:19:19,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:19:19,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:19:19,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:19:19,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:19:19,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:19:19,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:19:19,440 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2020-10-20 06:19:19,482 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:19:19,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:19:19,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:19:19,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:19:19,485 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:19:19,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:19:19,486 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:19:19,486 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:19:19,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:19:19,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:19:19,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:19:19,488 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:19:19,488 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:19:19,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:19:19,489 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:19:19,489 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 06:19:19,489 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 06:19:19,490 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:19:19,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:19:19,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:19:19,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:19:19,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:19:19,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:19:19,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:19:19,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:19:19,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:19:19,492 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 06:19:19,492 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 06:19:19,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:19:19,493 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 06:19:19,493 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> 04611f7cb9bdc3bfbd4f2358731c54027c595e1d [2020-10-20 06:19:19,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:19:19,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:19:19,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:19:19,722 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:19:19,723 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:19:19,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list_search-1.i [2020-10-20 06:19:19,787 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41bcc966b/af09bb4c164348c7a11f00f683cccd6f/FLAG9a484fa1c [2020-10-20 06:19:20,252 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:19:20,253 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_search-1.i [2020-10-20 06:19:20,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41bcc966b/af09bb4c164348c7a11f00f683cccd6f/FLAG9a484fa1c [2020-10-20 06:19:20,555 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41bcc966b/af09bb4c164348c7a11f00f683cccd6f [2020-10-20 06:19:20,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:19:20,564 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:19:20,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:19:20,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:19:20,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:19:20,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:19:20" (1/1) ... [2020-10-20 06:19:20,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@155e0bb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:20, skipping insertion in model container [2020-10-20 06:19:20,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:19:20" (1/1) ... [2020-10-20 06:19:20,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:19:20,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:19:20,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:19:21,009 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-10-20 06:19:21,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:19:21,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:19:21,061 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:19:21,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:19:21,201 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:19:21,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:21 WrapperNode [2020-10-20 06:19:21,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:19:21,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:19:21,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:19:21,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:19:21,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:21" (1/1) ... [2020-10-20 06:19:21,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:21" (1/1) ... [2020-10-20 06:19:21,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:21" (1/1) ... [2020-10-20 06:19:21,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:21" (1/1) ... [2020-10-20 06:19:21,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:21" (1/1) ... [2020-10-20 06:19:21,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:21" (1/1) ... [2020-10-20 06:19:21,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:21" (1/1) ... [2020-10-20 06:19:21,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:19:21,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:19:21,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:19:21,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:19:21,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:19:21,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:19:21,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:19:21,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 06:19:21,394 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 06:19:21,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-20 06:19:21,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 06:19:21,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 06:19:21,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 06:19:21,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 06:19:21,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 06:19:21,396 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2020-10-20 06:19:21,397 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2020-10-20 06:19:21,398 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:19:21,398 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:19:21,398 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 06:19:21,398 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-20 06:19:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-20 06:19:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 06:19:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:19:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-20 06:19:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 06:19:21,401 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 06:19:21,401 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 06:19:21,401 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 06:19:21,401 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 06:19:21,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 06:19:21,402 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 06:19:21,402 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 06:19:21,402 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 06:19:21,402 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 06:19:21,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 06:19:21,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 06:19:21,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 06:19:21,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 06:19:21,403 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 06:19:21,404 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 06:19:21,404 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 06:19:21,404 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 06:19:21,404 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 06:19:21,404 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 06:19:21,405 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 06:19:21,405 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 06:19:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 06:19:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 06:19:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 06:19:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 06:19:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 06:19:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 06:19:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 06:19:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 06:19:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 06:19:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 06:19:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 06:19:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 06:19:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 06:19:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 06:19:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 06:19:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 06:19:21,411 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 06:19:21,411 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 06:19:21,411 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 06:19:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 06:19:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 06:19:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 06:19:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 06:19:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 06:19:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 06:19:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 06:19:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 06:19:21,416 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 06:19:21,416 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 06:19:21,417 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 06:19:21,417 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 06:19:21,417 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 06:19:21,418 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 06:19:21,418 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 06:19:21,418 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 06:19:21,418 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 06:19:21,418 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 06:19:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 06:19:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 06:19:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 06:19:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 06:19:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 06:19:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 06:19:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 06:19:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 06:19:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 06:19:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 06:19:21,421 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 06:19:21,421 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 06:19:21,421 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 06:19:21,421 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 06:19:21,421 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 06:19:21,422 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 06:19:21,422 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 06:19:21,422 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 06:19:21,422 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 06:19:21,423 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 06:19:21,423 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 06:19:21,423 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 06:19:21,423 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 06:19:21,423 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 06:19:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 06:19:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 06:19:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 06:19:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 06:19:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 06:19:21,425 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 06:19:21,425 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 06:19:21,425 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 06:19:21,426 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 06:19:21,427 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 06:19:21,427 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 06:19:21,427 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 06:19:21,427 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 06:19:21,427 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 06:19:21,428 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 06:19:21,428 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 06:19:21,428 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 06:19:21,428 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 06:19:21,428 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 06:19:21,429 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 06:19:21,429 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 06:19:21,430 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 06:19:21,430 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 06:19:21,431 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2020-10-20 06:19:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 06:19:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 06:19:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2020-10-20 06:19:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:19:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 06:19:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 06:19:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:19:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:19:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:19:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 06:19:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:19:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 06:19:21,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-20 06:19:21,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-20 06:19:22,363 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:19:22,364 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-20 06:19:22,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:19:22 BoogieIcfgContainer [2020-10-20 06:19:22,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:19:22,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:19:22,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:19:22,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:19:22,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:19:20" (1/3) ... [2020-10-20 06:19:22,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb34043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:19:22, skipping insertion in model container [2020-10-20 06:19:22,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:21" (2/3) ... [2020-10-20 06:19:22,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb34043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:19:22, skipping insertion in model container [2020-10-20 06:19:22,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:19:22" (3/3) ... [2020-10-20 06:19:22,376 INFO L111 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2020-10-20 06:19:22,398 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:19:22,406 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2020-10-20 06:19:22,420 INFO L253 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2020-10-20 06:19:22,438 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:19:22,439 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:19:22,439 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:19:22,439 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:19:22,439 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:19:22,439 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:19:22,440 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:19:22,440 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:19:22,456 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-10-20 06:19:22,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 06:19:22,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:22,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:22,467 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, insert_listErr4REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr6REQUIRES_VIOLATION, insert_listErr7REQUIRES_VIOLATION, insert_listErr5REQUIRES_VIOLATION, insert_listErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION]=== [2020-10-20 06:19:22,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:22,474 INFO L82 PathProgramCache]: Analyzing trace with hash -527220629, now seen corresponding path program 1 times [2020-10-20 06:19:22,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:19:22,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184913021] [2020-10-20 06:19:22,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-20 06:19:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:22,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 06:19:22,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:22,803 INFO L384 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 [2020-10-20 06:19:22,804 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:22,813 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:22,814 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:22,814 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:19:22,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:22,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:19:22,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:22,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184913021] [2020-10-20 06:19:22,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:22,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 06:19:22,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041623786] [2020-10-20 06:19:22,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:19:22,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:19:22,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:19:22,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:19:22,885 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 3 states. [2020-10-20 06:19:23,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:23,086 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2020-10-20 06:19:23,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:19:23,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-20 06:19:23,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:23,098 INFO L225 Difference]: With dead ends: 73 [2020-10-20 06:19:23,099 INFO L226 Difference]: Without dead ends: 70 [2020-10-20 06:19:23,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:19:23,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-20 06:19:23,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-10-20 06:19:23,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-20 06:19:23,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2020-10-20 06:19:23,148 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 9 [2020-10-20 06:19:23,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:23,148 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2020-10-20 06:19:23,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:19:23,149 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2020-10-20 06:19:23,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 06:19:23,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:23,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:23,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 06:19:23,362 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, insert_listErr4REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr6REQUIRES_VIOLATION, insert_listErr7REQUIRES_VIOLATION, insert_listErr5REQUIRES_VIOLATION, insert_listErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION]=== [2020-10-20 06:19:23,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:23,362 INFO L82 PathProgramCache]: Analyzing trace with hash -527220628, now seen corresponding path program 1 times [2020-10-20 06:19:23,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:19:23,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278418303] [2020-10-20 06:19:23,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-20 06:19:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:23,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:19:23,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:23,524 INFO L384 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 [2020-10-20 06:19:23,524 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:23,532 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:23,533 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:23,533 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:19:23,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:23,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:19:23,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:23,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278418303] [2020-10-20 06:19:23,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:23,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-10-20 06:19:23,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420154081] [2020-10-20 06:19:23,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:19:23,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:19:23,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:19:23,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:19:23,635 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 4 states. [2020-10-20 06:19:23,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:23,863 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-10-20 06:19:23,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:19:23,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-20 06:19:23,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:23,866 INFO L225 Difference]: With dead ends: 66 [2020-10-20 06:19:23,866 INFO L226 Difference]: Without dead ends: 66 [2020-10-20 06:19:23,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:19:23,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-20 06:19:23,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-20 06:19:23,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-20 06:19:23,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2020-10-20 06:19:23,878 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 9 [2020-10-20 06:19:23,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:23,879 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2020-10-20 06:19:23,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:19:23,879 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2020-10-20 06:19:23,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-20 06:19:23,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:23,881 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:24,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 06:19:24,095 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, insert_listErr4REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr6REQUIRES_VIOLATION, insert_listErr7REQUIRES_VIOLATION, insert_listErr5REQUIRES_VIOLATION, insert_listErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION]=== [2020-10-20 06:19:24,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:24,095 INFO L82 PathProgramCache]: Analyzing trace with hash -2065543500, now seen corresponding path program 1 times [2020-10-20 06:19:24,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:19:24,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529571361] [2020-10-20 06:19:24,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-20 06:19:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:24,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:19:24,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:24,444 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-20 06:19:24,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:19:24,571 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 32 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-20 06:19:24,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529571361] [2020-10-20 06:19:24,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:19:24,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-20 06:19:24,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310237287] [2020-10-20 06:19:24,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:19:24,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:19:24,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:19:24,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:19:24,574 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 7 states. [2020-10-20 06:19:25,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:25,190 INFO L93 Difference]: Finished difference Result 122 states and 135 transitions. [2020-10-20 06:19:25,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 06:19:25,191 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-10-20 06:19:25,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:25,193 INFO L225 Difference]: With dead ends: 122 [2020-10-20 06:19:25,193 INFO L226 Difference]: Without dead ends: 122 [2020-10-20 06:19:25,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-20 06:19:25,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-20 06:19:25,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 73. [2020-10-20 06:19:25,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-20 06:19:25,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2020-10-20 06:19:25,208 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 47 [2020-10-20 06:19:25,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:25,208 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2020-10-20 06:19:25,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:19:25,209 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2020-10-20 06:19:25,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-20 06:19:25,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:25,211 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:25,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 06:19:25,425 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, insert_listErr4REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr6REQUIRES_VIOLATION, insert_listErr7REQUIRES_VIOLATION, insert_listErr5REQUIRES_VIOLATION, insert_listErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION]=== [2020-10-20 06:19:25,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:25,426 INFO L82 PathProgramCache]: Analyzing trace with hash -469917527, now seen corresponding path program 1 times [2020-10-20 06:19:25,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:19:25,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [113585292] [2020-10-20 06:19:25,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-20 06:19:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:25,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:19:25,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:25,668 INFO L384 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 [2020-10-20 06:19:25,669 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:25,670 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:25,670 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:25,671 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:19:25,696 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-20 06:19:25,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:19:25,768 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-20 06:19:25,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [113585292] [2020-10-20 06:19:25,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:25,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-20 06:19:25,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38647861] [2020-10-20 06:19:25,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:19:25,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:19:25,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:19:25,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:19:25,771 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand 5 states. [2020-10-20 06:19:26,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:26,197 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-10-20 06:19:26,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:19:26,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-20 06:19:26,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:26,203 INFO L225 Difference]: With dead ends: 87 [2020-10-20 06:19:26,205 INFO L226 Difference]: Without dead ends: 87 [2020-10-20 06:19:26,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:19:26,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-20 06:19:26,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 78. [2020-10-20 06:19:26,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-20 06:19:26,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-10-20 06:19:26,228 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 50 [2020-10-20 06:19:26,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:26,229 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-10-20 06:19:26,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:19:26,230 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-10-20 06:19:26,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-20 06:19:26,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:26,235 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:26,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-20 06:19:26,449 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, insert_listErr4REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr6REQUIRES_VIOLATION, insert_listErr7REQUIRES_VIOLATION, insert_listErr5REQUIRES_VIOLATION, insert_listErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION]=== [2020-10-20 06:19:26,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:26,450 INFO L82 PathProgramCache]: Analyzing trace with hash -469917526, now seen corresponding path program 1 times [2020-10-20 06:19:26,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:19:26,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913104556] [2020-10-20 06:19:26,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-20 06:19:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:26,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 06:19:26,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:26,705 INFO L384 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 [2020-10-20 06:19:26,705 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:26,711 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:26,712 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:26,712 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:19:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-20 06:19:26,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:19:27,030 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-20 06:19:27,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913104556] [2020-10-20 06:19:27,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:27,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-10-20 06:19:27,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713767355] [2020-10-20 06:19:27,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:19:27,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:19:27,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:19:27,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:19:27,033 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 8 states. [2020-10-20 06:19:27,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:27,638 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2020-10-20 06:19:27,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:19:27,638 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-10-20 06:19:27,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:27,640 INFO L225 Difference]: With dead ends: 98 [2020-10-20 06:19:27,640 INFO L226 Difference]: Without dead ends: 98 [2020-10-20 06:19:27,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:19:27,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-20 06:19:27,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 83. [2020-10-20 06:19:27,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-20 06:19:27,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2020-10-20 06:19:27,650 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 50 [2020-10-20 06:19:27,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:27,651 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2020-10-20 06:19:27,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:19:27,651 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2020-10-20 06:19:27,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-20 06:19:27,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:27,653 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:27,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-20 06:19:27,860 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, insert_listErr4REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr6REQUIRES_VIOLATION, insert_listErr7REQUIRES_VIOLATION, insert_listErr5REQUIRES_VIOLATION, insert_listErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION]=== [2020-10-20 06:19:27,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:27,860 INFO L82 PathProgramCache]: Analyzing trace with hash -2005945771, now seen corresponding path program 1 times [2020-10-20 06:19:27,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:19:27,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493279928] [2020-10-20 06:19:27,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-20 06:19:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:28,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:19:28,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:28,127 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-20 06:19:28,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:19:28,283 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-20 06:19:28,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493279928] [2020-10-20 06:19:28,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:28,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [] total 9 [2020-10-20 06:19:28,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114254456] [2020-10-20 06:19:28,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:19:28,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:19:28,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:19:28,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:19:28,286 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand 9 states. [2020-10-20 06:19:28,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:28,647 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2020-10-20 06:19:28,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:19:28,648 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-10-20 06:19:28,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:28,651 INFO L225 Difference]: With dead ends: 93 [2020-10-20 06:19:28,651 INFO L226 Difference]: Without dead ends: 93 [2020-10-20 06:19:28,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:19:28,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-20 06:19:28,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2020-10-20 06:19:28,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-20 06:19:28,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2020-10-20 06:19:28,662 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 55 [2020-10-20 06:19:28,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:28,662 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2020-10-20 06:19:28,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:19:28,662 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2020-10-20 06:19:28,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-20 06:19:28,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:28,664 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:28,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-20 06:19:28,867 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, insert_listErr4REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr6REQUIRES_VIOLATION, insert_listErr7REQUIRES_VIOLATION, insert_listErr5REQUIRES_VIOLATION, insert_listErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION]=== [2020-10-20 06:19:28,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:28,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1540518574, now seen corresponding path program 1 times [2020-10-20 06:19:28,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:19:28,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730479787] [2020-10-20 06:19:28,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-20 06:19:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:29,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:19:29,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:29,150 INFO L384 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 [2020-10-20 06:19:29,150 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:29,152 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:29,152 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:29,152 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:19:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-20 06:19:29,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:19:29,356 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-20 06:19:29,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1730479787] [2020-10-20 06:19:29,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:29,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-20 06:19:29,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819440235] [2020-10-20 06:19:29,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:19:29,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:19:29,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:19:29,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:19:29,359 INFO L87 Difference]: Start difference. First operand 83 states and 92 transitions. Second operand 10 states. [2020-10-20 06:19:30,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:30,133 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2020-10-20 06:19:30,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 06:19:30,134 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-20 06:19:30,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:30,136 INFO L225 Difference]: With dead ends: 100 [2020-10-20 06:19:30,137 INFO L226 Difference]: Without dead ends: 100 [2020-10-20 06:19:30,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-20 06:19:30,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-20 06:19:30,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 88. [2020-10-20 06:19:30,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-20 06:19:30,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2020-10-20 06:19:30,147 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 57 [2020-10-20 06:19:30,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:30,147 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2020-10-20 06:19:30,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:19:30,148 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2020-10-20 06:19:30,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-20 06:19:30,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:30,149 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:30,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-20 06:19:30,352 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, insert_listErr4REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr6REQUIRES_VIOLATION, insert_listErr7REQUIRES_VIOLATION, insert_listErr5REQUIRES_VIOLATION, insert_listErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION]=== [2020-10-20 06:19:30,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:30,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1540518573, now seen corresponding path program 1 times [2020-10-20 06:19:30,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:19:30,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068019796] [2020-10-20 06:19:30,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-20 06:19:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:30,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-20 06:19:30,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:30,637 INFO L384 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 [2020-10-20 06:19:30,638 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:30,643 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:30,643 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:30,644 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:19:30,734 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-20 06:19:30,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:19:31,400 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-20 06:19:31,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068019796] [2020-10-20 06:19:31,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:31,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2020-10-20 06:19:31,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973710870] [2020-10-20 06:19:31,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 06:19:31,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:19:31,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 06:19:31,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:19:31,402 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand 14 states. [2020-10-20 06:19:32,741 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2020-10-20 06:19:33,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:33,235 INFO L93 Difference]: Finished difference Result 123 states and 132 transitions. [2020-10-20 06:19:33,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-20 06:19:33,236 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 57 [2020-10-20 06:19:33,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:33,238 INFO L225 Difference]: With dead ends: 123 [2020-10-20 06:19:33,238 INFO L226 Difference]: Without dead ends: 123 [2020-10-20 06:19:33,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2020-10-20 06:19:33,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-20 06:19:33,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 88. [2020-10-20 06:19:33,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-20 06:19:33,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2020-10-20 06:19:33,252 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 57 [2020-10-20 06:19:33,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:33,252 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2020-10-20 06:19:33,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 06:19:33,253 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2020-10-20 06:19:33,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-20 06:19:33,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:33,259 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:33,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-20 06:19:33,473 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, insert_listErr4REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr6REQUIRES_VIOLATION, insert_listErr7REQUIRES_VIOLATION, insert_listErr5REQUIRES_VIOLATION, insert_listErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION]=== [2020-10-20 06:19:33,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:33,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1489991723, now seen corresponding path program 1 times [2020-10-20 06:19:33,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:19:33,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518728756] [2020-10-20 06:19:33,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-20 06:19:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:33,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-20 06:19:33,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:33,789 INFO L384 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 [2020-10-20 06:19:33,790 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:33,792 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:33,792 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:33,792 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:19:33,835 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-20 06:19:33,835 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:33,843 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:33,843 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:33,844 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-10-20 06:19:33,910 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:33,911 INFO L384 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 20 treesize of output 54 [2020-10-20 06:19:33,912 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:33,942 INFO L625 ElimStorePlain]: treesize reduction 32, result has 38.5 percent of original size [2020-10-20 06:19:33,942 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:33,943 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:20 [2020-10-20 06:19:34,024 INFO L384 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 19 treesize of output 11 [2020-10-20 06:19:34,025 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:34,031 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:34,032 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:19:34,033 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:15 [2020-10-20 06:19:34,092 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-20 06:19:34,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:19:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-20 06:19:34,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518728756] [2020-10-20 06:19:34,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:19:34,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 16 [2020-10-20 06:19:34,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463424971] [2020-10-20 06:19:34,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-20 06:19:34,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:19:34,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-20 06:19:34,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-10-20 06:19:34,535 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand 17 states. [2020-10-20 06:19:36,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:36,183 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2020-10-20 06:19:36,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-20 06:19:36,184 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 57 [2020-10-20 06:19:36,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:36,186 INFO L225 Difference]: With dead ends: 118 [2020-10-20 06:19:36,186 INFO L226 Difference]: Without dead ends: 118 [2020-10-20 06:19:36,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 97 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2020-10-20 06:19:36,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-20 06:19:36,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 95. [2020-10-20 06:19:36,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-20 06:19:36,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 106 transitions. [2020-10-20 06:19:36,206 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 106 transitions. Word has length 57 [2020-10-20 06:19:36,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:36,208 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 106 transitions. [2020-10-20 06:19:36,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-20 06:19:36,208 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 106 transitions. [2020-10-20 06:19:36,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-20 06:19:36,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:36,215 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:36,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-20 06:19:36,416 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, insert_listErr4REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr6REQUIRES_VIOLATION, insert_listErr7REQUIRES_VIOLATION, insert_listErr5REQUIRES_VIOLATION, insert_listErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION]=== [2020-10-20 06:19:36,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:36,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1489991722, now seen corresponding path program 1 times [2020-10-20 06:19:36,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:19:36,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820527416] [2020-10-20 06:19:36,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-10-20 06:19:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:36,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-20 06:19:36,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:36,740 INFO L384 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 [2020-10-20 06:19:36,740 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:36,745 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:36,745 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:36,746 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:19:36,821 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-20 06:19:36,822 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:36,833 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:36,840 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-20 06:19:36,840 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:36,850 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:36,851 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:36,852 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:28 [2020-10-20 06:19:36,938 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:36,939 INFO L384 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 52 [2020-10-20 06:19:36,940 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:36,969 INFO L625 ElimStorePlain]: treesize reduction 32, result has 47.5 percent of original size [2020-10-20 06:19:36,969 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:36,969 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:29 [2020-10-20 06:19:37,055 INFO L384 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 [2020-10-20 06:19:37,055 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:37,068 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:37,071 INFO L384 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 17 treesize of output 9 [2020-10-20 06:19:37,071 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:37,078 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:37,079 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:19:37,079 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:36, output treesize:14 [2020-10-20 06:19:37,157 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-20 06:19:37,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:19:38,172 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-10-20 06:19:39,271 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-10-20 06:19:39,592 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-20 06:19:39,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820527416] [2020-10-20 06:19:39,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:19:39,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2020-10-20 06:19:39,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021210758] [2020-10-20 06:19:39,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-20 06:19:39,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:19:39,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-20 06:19:39,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2020-10-20 06:19:39,595 INFO L87 Difference]: Start difference. First operand 95 states and 106 transitions. Second operand 22 states. [2020-10-20 06:19:44,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:44,024 INFO L93 Difference]: Finished difference Result 124 states and 135 transitions. [2020-10-20 06:19:44,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-20 06:19:44,025 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 57 [2020-10-20 06:19:44,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:44,027 INFO L225 Difference]: With dead ends: 124 [2020-10-20 06:19:44,027 INFO L226 Difference]: Without dead ends: 124 [2020-10-20 06:19:44,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=262, Invalid=998, Unknown=0, NotChecked=0, Total=1260 [2020-10-20 06:19:44,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-20 06:19:44,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 98. [2020-10-20 06:19:44,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-20 06:19:44,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2020-10-20 06:19:44,034 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 57 [2020-10-20 06:19:44,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:44,034 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2020-10-20 06:19:44,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-20 06:19:44,034 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2020-10-20 06:19:44,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-20 06:19:44,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:44,036 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:44,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-10-20 06:19:44,248 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, insert_listErr4REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr6REQUIRES_VIOLATION, insert_listErr7REQUIRES_VIOLATION, insert_listErr5REQUIRES_VIOLATION, insert_listErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION]=== [2020-10-20 06:19:44,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:44,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1364919037, now seen corresponding path program 1 times [2020-10-20 06:19:44,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:19:44,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088844768] [2020-10-20 06:19:44,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-10-20 06:19:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:44,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 06:19:44,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:44,667 INFO L350 Elim1Store]: treesize reduction 163, result has 15.1 percent of original size [2020-10-20 06:19:44,668 INFO L384 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 3 case distinctions, treesize of input 30 treesize of output 39 [2020-10-20 06:19:44,669 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:44,685 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:44,686 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:44,686 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:39 [2020-10-20 06:19:44,790 INFO L350 Elim1Store]: treesize reduction 188, result has 15.7 percent of original size [2020-10-20 06:19:44,790 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 51 [2020-10-20 06:19:44,791 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:44,813 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:44,813 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:44,813 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:58, output treesize:39 [2020-10-20 06:19:45,131 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-20 06:19:45,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:19:45,836 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:19:45,847 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:45,848 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:19:45,848 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:57, output treesize:57 [2020-10-20 06:19:45,926 INFO L384 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 93 treesize of output 87 [2020-10-20 06:19:45,976 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-10-20 06:19:46,207 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 11 [2020-10-20 06:19:46,207 INFO L625 ElimStorePlain]: treesize reduction 16100, result has 0.1 percent of original size [2020-10-20 06:19:46,208 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:46,213 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:46,214 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:46,214 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:98, output treesize:19 [2020-10-20 06:19:46,295 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-20 06:19:46,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088844768] [2020-10-20 06:19:46,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:46,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2020-10-20 06:19:46,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119288359] [2020-10-20 06:19:46,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-20 06:19:46,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:19:46,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-20 06:19:46,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-20 06:19:46,299 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand 18 states. [2020-10-20 06:19:48,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:48,967 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2020-10-20 06:19:48,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-20 06:19:48,968 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 63 [2020-10-20 06:19:48,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:48,969 INFO L225 Difference]: With dead ends: 107 [2020-10-20 06:19:48,969 INFO L226 Difference]: Without dead ends: 104 [2020-10-20 06:19:48,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 106 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2020-10-20 06:19:48,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-20 06:19:48,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 98. [2020-10-20 06:19:48,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-20 06:19:48,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2020-10-20 06:19:48,975 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 63 [2020-10-20 06:19:48,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:48,975 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2020-10-20 06:19:48,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-20 06:19:48,975 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2020-10-20 06:19:48,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-20 06:19:48,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:48,976 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:49,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-10-20 06:19:49,188 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, insert_listErr4REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr6REQUIRES_VIOLATION, insert_listErr7REQUIRES_VIOLATION, insert_listErr5REQUIRES_VIOLATION, insert_listErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION]=== [2020-10-20 06:19:49,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:49,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1862952617, now seen corresponding path program 1 times [2020-10-20 06:19:49,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:19:49,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320108556] [2020-10-20 06:19:49,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-10-20 06:19:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:49,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-20 06:19:49,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:49,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320108556] [2020-10-20 06:19:49,437 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 06:19:49,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1580273065] [2020-10-20 06:19:49,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 06:19:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:49,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-20 06:19:49,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:49,844 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 06:19:49,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883960150] [2020-10-20 06:19:49,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:19:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:50,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-20 06:19:50,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:50,016 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 06:19:50,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:50,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 06:19:50,016 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 06:19:50,016 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:19:50,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3,14 cvc4 --incremental --print-success --lang smt --rewrite-divk,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:19:50,649 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 06:19:50,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:19:50 BoogieIcfgContainer [2020-10-20 06:19:50,650 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:19:50,650 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:19:50,650 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:19:50,650 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:19:50,651 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:19:22" (3/4) ... [2020-10-20 06:19:50,654 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:19:50,654 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:19:50,655 INFO L168 Benchmark]: Toolchain (without parser) took 30096.30 ms. Allocated memory was 34.6 MB in the beginning and 90.2 MB in the end (delta: 55.6 MB). Free memory was 10.2 MB in the beginning and 16.0 MB in the end (delta: -5.8 MB). Peak memory consumption was 49.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:50,656 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 33.0 MB. Free memory was 17.5 MB in the beginning and 17.5 MB in the end (delta: 40.2 kB). Peak memory consumption was 40.2 kB. Max. memory is 14.3 GB. [2020-10-20 06:19:50,656 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.42 ms. Allocated memory was 34.6 MB in the beginning and 45.1 MB in the end (delta: 10.5 MB). Free memory was 9.3 MB in the beginning and 18.7 MB in the end (delta: -9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:50,657 INFO L168 Benchmark]: Boogie Preprocessor took 91.19 ms. Allocated memory is still 45.1 MB. Free memory was 18.7 MB in the beginning and 15.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:50,657 INFO L168 Benchmark]: RCFGBuilder took 1070.09 ms. Allocated memory was 45.1 MB in the beginning and 49.3 MB in the end (delta: 4.2 MB). Free memory was 15.4 MB in the beginning and 12.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:50,658 INFO L168 Benchmark]: TraceAbstraction took 28282.01 ms. Allocated memory was 49.3 MB in the beginning and 90.2 MB in the end (delta: 40.9 MB). Free memory was 12.3 MB in the beginning and 17.3 MB in the end (delta: -5.0 MB). Peak memory consumption was 35.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:50,658 INFO L168 Benchmark]: Witness Printer took 4.07 ms. Allocated memory is still 90.2 MB. Free memory was 17.3 MB in the beginning and 16.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:50,661 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 33.0 MB. Free memory was 17.5 MB in the beginning and 17.5 MB in the end (delta: 40.2 kB). Peak memory consumption was 40.2 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 639.42 ms. Allocated memory was 34.6 MB in the beginning and 45.1 MB in the end (delta: 10.5 MB). Free memory was 9.3 MB in the beginning and 18.7 MB in the end (delta: -9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 91.19 ms. Allocated memory is still 45.1 MB. Free memory was 18.7 MB in the beginning and 15.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1070.09 ms. Allocated memory was 45.1 MB in the beginning and 49.3 MB in the end (delta: 4.2 MB). Free memory was 15.4 MB in the beginning and 12.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 28282.01 ms. Allocated memory was 49.3 MB in the beginning and 90.2 MB in the end (delta: 40.9 MB). Free memory was 12.3 MB in the beginning and 17.3 MB in the end (delta: -5.0 MB). Peak memory consumption was 35.9 MB. Max. memory is 14.3 GB. * Witness Printer took 4.07 ms. Allocated memory is still 90.2 MB. Free memory was 17.3 MB in the beginning and 16.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 561]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L533] mlist *head; [L554] int i; [L555] mlist *mylist, *temp; [L556] CALL insert_list(mylist,2) [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k [L544] COND TRUE head==((void *)0) [L545] l->next = ((void *)0) [L550] head = l [L551] return 0; [L556] RET insert_list(mylist,2) [L557] CALL insert_list(mylist,5) [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k [L544] COND FALSE !(head==((void *)0)) [L547] l->key = k [L548] l->next = head [L550] head = l [L551] return 0; [L557] RET insert_list(mylist,5) [L558] CALL insert_list(mylist,1) [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k [L544] COND FALSE !(head==((void *)0)) [L547] l->key = k [L548] l->next = head [L550] head = l [L551] return 0; [L558] RET insert_list(mylist,1) [L559] CALL insert_list(mylist,3) [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k [L544] COND FALSE !(head==((void *)0)) [L547] l->key = k [L548] l->next = head [L550] head = l [L551] return 0; [L559] RET insert_list(mylist,3) [L560] CALL, EXPR search_list(head,2) [L535] l = head [L536] l!=((void *)0) && l->key!=k [L536] EXPR l->key [L536] l!=((void *)0) && l->key!=k [L536] COND TRUE l!=((void *)0) && l->key!=k [L537] EXPR l->next [L537] l = l->next [L536] l!=((void *)0) && l->key!=k [L536] COND FALSE !(l!=((void *)0) && l->key!=k) [L539] return l; [L560] RET, EXPR search_list(head,2) [L560] temp = search_list(head,2) [L561] temp->key - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 101 locations, 21 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 28.1s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 13.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 583 SDtfs, 1436 SDslu, 1634 SDs, 0 SdLazy, 3039 SolverSat, 336 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1086 GetRequests, 915 SyntacticMatches, 6 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 185 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 511 NumberOfCodeBlocks, 511 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1000 ConstructedInterpolants, 17 QuantifiedInterpolants, 335838 SizeOfPredicates, 87 NumberOfNonLiveVariables, 2794 ConjunctsInSsa, 120 ConjunctsInUnsatCore, 22 InterpolantComputations, 16 PerfectInterpolantSequences, 704/768 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 Received shutdown request...