./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 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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 -Xmx12G -Xms1G -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 0.1.25-906a4fb [2020-10-19 18:26:26,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:26:26,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:26:26,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:26:26,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:26:26,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:26:26,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:26:26,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:26:26,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:26:26,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:26:26,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:26:26,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:26:26,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:26:26,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:26:26,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:26:26,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:26:26,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:26:26,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:26:26,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:26:26,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:26:26,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:26:26,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:26:26,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:26:26,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:26:26,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:26:26,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:26:26,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:26:26,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:26:26,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:26:26,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:26:26,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:26:26,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:26:26,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:26:26,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:26:26,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:26:26,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:26:26,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:26:26,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:26:26,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:26:26,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:26:26,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:26:26,520 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2020-10-19 18:26:26,543 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:26:26,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:26:26,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:26:26,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:26:26,545 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:26:26,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:26:26,545 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:26:26,546 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:26:26,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:26:26,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:26:26,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:26:26,546 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:26:26,547 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:26:26,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:26:26,547 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:26:26,547 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:26:26,547 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:26:26,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:26:26,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:26:26,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:26:26,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:26:26,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:26:26,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:26:26,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:26:26,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:26:26,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:26:26,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:26:26,550 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 [2020-10-19 18:26:26,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:26:26,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:26:26,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:26:26,901 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:26:26,901 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:26:26,902 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list_search-1.i [2020-10-19 18:26:26,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60aa6cd06/b0cefd3bc27d463db0090c7eedb63f02/FLAG27b07bf49 [2020-10-19 18:26:27,457 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:26:27,458 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_search-1.i [2020-10-19 18:26:27,475 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60aa6cd06/b0cefd3bc27d463db0090c7eedb63f02/FLAG27b07bf49 [2020-10-19 18:26:27,937 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60aa6cd06/b0cefd3bc27d463db0090c7eedb63f02 [2020-10-19 18:26:27,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:26:27,949 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:26:27,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:26:27,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:26:27,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:26:27,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:26:27" (1/1) ... [2020-10-19 18:26:27,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4022e9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:27, skipping insertion in model container [2020-10-19 18:26:27,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:26:27" (1/1) ... [2020-10-19 18:26:27,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:26:28,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:26:28,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:26:28,501 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) [2020-10-19 18:26:28,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7858afe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:28, skipping insertion in model container [2020-10-19 18:26:28,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:26:28,503 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2020-10-19 18:26:28,507 INFO L168 Benchmark]: Toolchain (without parser) took 562.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -168.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:26:28,508 INFO L168 Benchmark]: CDTParser took 1.53 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:26:28,509 INFO L168 Benchmark]: CACSL2BoogieTranslator took 553.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -168.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:26:28,513 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.53 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 553.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -168.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 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 0.1.25-906a4fb [2020-10-19 18:26:30,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:26:30,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:26:30,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:26:30,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:26:30,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:26:30,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:26:30,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:26:30,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:26:30,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:26:30,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:26:30,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:26:30,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:26:30,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:26:30,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:26:30,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:26:30,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:26:30,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:26:30,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:26:30,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:26:30,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:26:30,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:26:30,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:26:30,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:26:30,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:26:30,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:26:30,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:26:30,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:26:30,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:26:30,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:26:30,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:26:30,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:26:30,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:26:30,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:26:30,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:26:30,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:26:30,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:26:30,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:26:30,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:26:30,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:26:30,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:26:30,374 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2020-10-19 18:26:30,412 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:26:30,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:26:30,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:26:30,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:26:30,414 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:26:30,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:26:30,415 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:26:30,415 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:26:30,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:26:30,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:26:30,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:26:30,417 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:26:30,417 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:26:30,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:26:30,418 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:26:30,418 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 18:26:30,419 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 18:26:30,419 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:26:30,419 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:26:30,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:26:30,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:26:30,420 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:26:30,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:26:30,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:26:30,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:26:30,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:26:30,421 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 18:26:30,421 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 18:26:30,421 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:26:30,422 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 18:26:30,422 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 [2020-10-19 18:26:30,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:26:30,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:26:30,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:26:30,730 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:26:30,731 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:26:30,732 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list_search-1.i [2020-10-19 18:26:30,792 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bbda1808/b66d3ce672354ae0bceaa4e794397d68/FLAGa74cf5078 [2020-10-19 18:26:31,314 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:26:31,315 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_search-1.i [2020-10-19 18:26:31,327 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bbda1808/b66d3ce672354ae0bceaa4e794397d68/FLAGa74cf5078 [2020-10-19 18:26:31,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bbda1808/b66d3ce672354ae0bceaa4e794397d68 [2020-10-19 18:26:31,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:26:31,648 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:26:31,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:26:31,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:26:31,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:26:31,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:26:31" (1/1) ... [2020-10-19 18:26:31,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@236c7778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:31, skipping insertion in model container [2020-10-19 18:26:31,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:26:31" (1/1) ... [2020-10-19 18:26:31,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:26:31,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:26:32,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:26:32,184 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-10-19 18:26:32,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:26:32,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:26:32,225 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:26:32,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:26:32,343 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:26:32,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:32 WrapperNode [2020-10-19 18:26:32,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:26:32,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:26:32,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:26:32,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:26:32,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:32" (1/1) ... [2020-10-19 18:26:32,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:32" (1/1) ... [2020-10-19 18:26:32,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:32" (1/1) ... [2020-10-19 18:26:32,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:32" (1/1) ... [2020-10-19 18:26:32,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:32" (1/1) ... [2020-10-19 18:26:32,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:32" (1/1) ... [2020-10-19 18:26:32,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:32" (1/1) ... [2020-10-19 18:26:32,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:26:32,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:26:32,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:26:32,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:26:32,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:32" (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 [2020-10-19 18:26:32,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:26:32,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:26:32,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 18:26:32,486 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:26:32,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-19 18:26:32,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 18:26:32,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 18:26:32,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 18:26:32,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 18:26:32,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 18:26:32,488 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2020-10-19 18:26:32,489 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2020-10-19 18:26:32,489 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:26:32,489 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:26:32,489 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:26:32,489 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:26:32,489 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:26:32,490 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:26:32,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:26:32,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-19 18:26:32,491 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:26:32,491 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:26:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:26:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:26:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:26:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:26:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:26:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:26:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:26:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:26:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:26:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:26:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:26:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:26:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:26:32,494 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:26:32,494 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 18:26:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 18:26:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 18:26:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 18:26:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 18:26:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:26:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:26:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:26:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:26:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:26:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:26:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:26:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:26:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:26:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:26:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:26:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:26:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:26:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:26:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:26:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:26:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:26:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:26:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:26:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:26:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:26:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:26:32,500 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:26:32,500 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:26:32,500 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:26:32,500 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:26:32,501 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:26:32,501 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:26:32,502 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:26:32,502 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:26:32,503 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:26:32,503 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:26:32,503 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:26:32,503 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:26:32,503 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:26:32,504 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:26:32,504 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:26:32,504 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:26:32,505 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:26:32,505 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:26:32,505 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:26:32,505 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:26:32,505 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:26:32,505 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:26:32,506 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:26:32,506 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:26:32,506 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:26:32,506 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:26:32,506 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:26:32,506 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:26:32,506 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:26:32,506 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:26:32,507 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:26:32,507 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:26:32,507 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:26:32,507 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:26:32,507 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:26:32,507 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:26:32,507 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:26:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:26:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:26:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:26:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:26:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:26:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:26:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:26:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:26:32,509 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:26:32,509 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:26:32,509 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:26:32,510 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:26:32,510 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:26:32,510 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:26:32,510 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:26:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:26:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:26:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:26:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:26:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:26:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:26:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:26:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:26:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:26:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:26:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:26:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2020-10-19 18:26:32,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-19 18:26:32,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:26:32,517 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2020-10-19 18:26:32,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:26:32,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-19 18:26:32,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:26:32,519 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:26:32,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:26:32,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:26:32,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 18:26:32,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:26:32,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 18:26:32,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-19 18:26:32,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-19 18:26:33,301 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:26:33,301 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-19 18:26:33,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:26:33 BoogieIcfgContainer [2020-10-19 18:26:33,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:26:33,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:26:33,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:26:33,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:26:33,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:26:31" (1/3) ... [2020-10-19 18:26:33,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eca81d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:26:33, skipping insertion in model container [2020-10-19 18:26:33,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:32" (2/3) ... [2020-10-19 18:26:33,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eca81d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:26:33, skipping insertion in model container [2020-10-19 18:26:33,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:26:33" (3/3) ... [2020-10-19 18:26:33,312 INFO L111 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2020-10-19 18:26:33,325 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:26:33,333 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2020-10-19 18:26:33,347 INFO L253 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2020-10-19 18:26:33,369 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:26:33,369 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:26:33,369 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:26:33,369 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:26:33,370 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:26:33,370 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:26:33,370 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:26:33,370 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:26:33,388 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-10-19 18:26:33,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:26:33,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:33,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:33,399 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]=== [2020-10-19 18:26:33,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:33,406 INFO L82 PathProgramCache]: Analyzing trace with hash -527220629, now seen corresponding path program 1 times [2020-10-19 18:26:33,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:26:33,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819132269] [2020-10-19 18:26:33,420 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 [2020-10-19 18:26:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:33,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 18:26:33,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:33,689 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 [2020-10-19 18:26:33,689 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:33,705 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:33,706 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:33,706 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:26:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:33,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:26:33,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:33,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819132269] [2020-10-19 18:26:33,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:33,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-19 18:26:33,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928763221] [2020-10-19 18:26:33,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:26:33,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:26:33,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:26:33,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:26:33,767 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 3 states. [2020-10-19 18:26:33,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:33,943 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2020-10-19 18:26:33,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:26:33,945 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-19 18:26:33,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:33,957 INFO L225 Difference]: With dead ends: 73 [2020-10-19 18:26:33,957 INFO L226 Difference]: Without dead ends: 70 [2020-10-19 18:26:33,959 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 [2020-10-19 18:26:33,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-19 18:26:34,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-10-19 18:26:34,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-19 18:26:34,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2020-10-19 18:26:34,008 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 9 [2020-10-19 18:26:34,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:34,008 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2020-10-19 18:26:34,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:26:34,009 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2020-10-19 18:26:34,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:26:34,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:34,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:34,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 18:26:34,223 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]=== [2020-10-19 18:26:34,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:34,224 INFO L82 PathProgramCache]: Analyzing trace with hash -527220628, now seen corresponding path program 1 times [2020-10-19 18:26:34,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:26:34,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598541310] [2020-10-19 18:26:34,226 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 [2020-10-19 18:26:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:34,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:26:34,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:34,372 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 [2020-10-19 18:26:34,372 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:34,389 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:34,389 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:34,390 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:26:34,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:34,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:26:34,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:34,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598541310] [2020-10-19 18:26:34,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:34,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-10-19 18:26:34,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064000688] [2020-10-19 18:26:34,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:26:34,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:26:34,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:26:34,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:26:34,467 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 4 states. [2020-10-19 18:26:34,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:34,652 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-10-19 18:26:34,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:26:34,653 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-19 18:26:34,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:34,655 INFO L225 Difference]: With dead ends: 66 [2020-10-19 18:26:34,655 INFO L226 Difference]: Without dead ends: 66 [2020-10-19 18:26:34,656 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 [2020-10-19 18:26:34,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-19 18:26:34,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-19 18:26:34,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-19 18:26:34,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2020-10-19 18:26:34,666 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 9 [2020-10-19 18:26:34,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:34,667 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2020-10-19 18:26:34,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:26:34,667 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2020-10-19 18:26:34,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-19 18:26:34,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:34,670 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] [2020-10-19 18:26:34,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 18:26:34,884 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]=== [2020-10-19 18:26:34,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:34,884 INFO L82 PathProgramCache]: Analyzing trace with hash -2065543500, now seen corresponding path program 1 times [2020-10-19 18:26:34,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:26:34,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675949742] [2020-10-19 18:26:34,887 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 [2020-10-19 18:26:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:35,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:26:35,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:35,208 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-19 18:26:35,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:26:35,291 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 32 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-19 18:26:35,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675949742] [2020-10-19 18:26:35,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:26:35,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-19 18:26:35,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785859320] [2020-10-19 18:26:35,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:26:35,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:26:35,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:26:35,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:26:35,293 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 7 states. [2020-10-19 18:26:35,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:35,843 INFO L93 Difference]: Finished difference Result 122 states and 135 transitions. [2020-10-19 18:26:35,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 18:26:35,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-10-19 18:26:35,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:35,847 INFO L225 Difference]: With dead ends: 122 [2020-10-19 18:26:35,847 INFO L226 Difference]: Without dead ends: 122 [2020-10-19 18:26:35,847 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 [2020-10-19 18:26:35,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-19 18:26:35,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 73. [2020-10-19 18:26:35,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-19 18:26:35,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2020-10-19 18:26:35,861 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 47 [2020-10-19 18:26:35,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:35,861 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2020-10-19 18:26:35,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:26:35,862 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2020-10-19 18:26:35,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-19 18:26:35,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:35,863 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] [2020-10-19 18:26:36,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 18:26:36,065 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]=== [2020-10-19 18:26:36,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:36,066 INFO L82 PathProgramCache]: Analyzing trace with hash -469917527, now seen corresponding path program 1 times [2020-10-19 18:26:36,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:26:36,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626829690] [2020-10-19 18:26:36,068 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 [2020-10-19 18:26:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:36,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:26:36,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:36,315 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 [2020-10-19 18:26:36,316 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:36,318 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:36,318 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:36,318 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:26:36,338 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-19 18:26:36,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:26:36,408 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-19 18:26:36,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [626829690] [2020-10-19 18:26:36,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:36,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-19 18:26:36,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316478457] [2020-10-19 18:26:36,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:26:36,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:26:36,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:26:36,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:26:36,410 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand 5 states. [2020-10-19 18:26:36,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:36,777 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-10-19 18:26:36,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:26:36,778 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-19 18:26:36,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:36,782 INFO L225 Difference]: With dead ends: 87 [2020-10-19 18:26:36,782 INFO L226 Difference]: Without dead ends: 87 [2020-10-19 18:26:36,782 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 [2020-10-19 18:26:36,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-19 18:26:36,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 78. [2020-10-19 18:26:36,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-19 18:26:36,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-10-19 18:26:36,791 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 50 [2020-10-19 18:26:36,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:36,792 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-10-19 18:26:36,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:26:36,792 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-10-19 18:26:36,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-19 18:26:36,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:36,794 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] [2020-10-19 18:26:37,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-19 18:26:37,016 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]=== [2020-10-19 18:26:37,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:37,016 INFO L82 PathProgramCache]: Analyzing trace with hash -469917526, now seen corresponding path program 1 times [2020-10-19 18:26:37,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:26:37,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1109148750] [2020-10-19 18:26:37,017 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 [2020-10-19 18:26:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:37,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 18:26:37,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:37,257 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 [2020-10-19 18:26:37,258 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:37,265 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:37,265 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:37,266 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:26:37,302 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-19 18:26:37,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:26:37,554 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-19 18:26:37,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1109148750] [2020-10-19 18:26:37,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:37,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-10-19 18:26:37,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453050852] [2020-10-19 18:26:37,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:26:37,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:26:37,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:26:37,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:26:37,557 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 8 states. [2020-10-19 18:26:38,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:38,195 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2020-10-19 18:26:38,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:26:38,195 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-10-19 18:26:38,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:38,197 INFO L225 Difference]: With dead ends: 98 [2020-10-19 18:26:38,197 INFO L226 Difference]: Without dead ends: 98 [2020-10-19 18:26:38,198 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 [2020-10-19 18:26:38,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-19 18:26:38,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 83. [2020-10-19 18:26:38,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-19 18:26:38,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2020-10-19 18:26:38,205 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 50 [2020-10-19 18:26:38,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:38,206 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2020-10-19 18:26:38,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:26:38,206 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2020-10-19 18:26:38,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-19 18:26:38,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:38,207 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] [2020-10-19 18:26:38,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-19 18:26:38,414 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]=== [2020-10-19 18:26:38,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:38,414 INFO L82 PathProgramCache]: Analyzing trace with hash -2005945771, now seen corresponding path program 1 times [2020-10-19 18:26:38,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:26:38,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542218600] [2020-10-19 18:26:38,417 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 [2020-10-19 18:26:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:38,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:26:38,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-19 18:26:38,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:26:38,837 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-19 18:26:38,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542218600] [2020-10-19 18:26:38,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:38,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [] total 9 [2020-10-19 18:26:38,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503201588] [2020-10-19 18:26:38,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:26:38,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:26:38,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:26:38,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:26:38,839 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand 9 states. [2020-10-19 18:26:39,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:39,192 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2020-10-19 18:26:39,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:26:39,193 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-10-19 18:26:39,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:39,194 INFO L225 Difference]: With dead ends: 93 [2020-10-19 18:26:39,194 INFO L226 Difference]: Without dead ends: 93 [2020-10-19 18:26:39,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:26:39,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-19 18:26:39,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2020-10-19 18:26:39,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-19 18:26:39,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2020-10-19 18:26:39,202 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 55 [2020-10-19 18:26:39,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:39,203 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2020-10-19 18:26:39,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:26:39,203 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2020-10-19 18:26:39,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-19 18:26:39,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:39,204 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] [2020-10-19 18:26:39,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-19 18:26:39,426 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]=== [2020-10-19 18:26:39,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:39,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1540518574, now seen corresponding path program 1 times [2020-10-19 18:26:39,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:26:39,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253388983] [2020-10-19 18:26:39,429 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 [2020-10-19 18:26:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:39,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:26:39,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:39,669 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 [2020-10-19 18:26:39,670 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:39,672 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:39,672 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:39,673 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:26:39,737 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-19 18:26:39,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:26:39,892 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-19 18:26:39,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253388983] [2020-10-19 18:26:39,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:39,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-19 18:26:39,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656175916] [2020-10-19 18:26:39,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 18:26:39,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:26:39,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:26:39,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:26:39,895 INFO L87 Difference]: Start difference. First operand 83 states and 92 transitions. Second operand 10 states. [2020-10-19 18:26:40,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:40,696 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2020-10-19 18:26:40,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:26:40,697 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-19 18:26:40,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:40,700 INFO L225 Difference]: With dead ends: 100 [2020-10-19 18:26:40,700 INFO L226 Difference]: Without dead ends: 100 [2020-10-19 18:26:40,702 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 [2020-10-19 18:26:40,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-19 18:26:40,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 88. [2020-10-19 18:26:40,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-19 18:26:40,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2020-10-19 18:26:40,720 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 57 [2020-10-19 18:26:40,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:40,722 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2020-10-19 18:26:40,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 18:26:40,722 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2020-10-19 18:26:40,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-19 18:26:40,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:40,725 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] [2020-10-19 18:26:40,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-19 18:26:40,941 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]=== [2020-10-19 18:26:40,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:40,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1540518573, now seen corresponding path program 1 times [2020-10-19 18:26:40,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:26:40,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209396507] [2020-10-19 18:26:40,943 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 [2020-10-19 18:26:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:41,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-19 18:26:41,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:41,192 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 [2020-10-19 18:26:41,193 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:41,198 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:41,198 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:41,198 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:26:41,298 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-19 18:26:41,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:26:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-19 18:26:41,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209396507] [2020-10-19 18:26:41,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:41,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2020-10-19 18:26:41,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209213858] [2020-10-19 18:26:41,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-19 18:26:41,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:26:41,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-19 18:26:41,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:26:41,934 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand 14 states. [2020-10-19 18:26:43,308 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2020-10-19 18:26:43,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:43,787 INFO L93 Difference]: Finished difference Result 123 states and 132 transitions. [2020-10-19 18:26:43,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-19 18:26:43,788 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 57 [2020-10-19 18:26:43,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:43,790 INFO L225 Difference]: With dead ends: 123 [2020-10-19 18:26:43,790 INFO L226 Difference]: Without dead ends: 123 [2020-10-19 18:26:43,790 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 [2020-10-19 18:26:43,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-19 18:26:43,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 88. [2020-10-19 18:26:43,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-19 18:26:43,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2020-10-19 18:26:43,799 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 57 [2020-10-19 18:26:43,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:43,800 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2020-10-19 18:26:43,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-19 18:26:43,800 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2020-10-19 18:26:43,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-19 18:26:43,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:43,801 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] [2020-10-19 18:26:44,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-19 18:26:44,010 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]=== [2020-10-19 18:26:44,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:44,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1489991723, now seen corresponding path program 1 times [2020-10-19 18:26:44,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:26:44,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295412691] [2020-10-19 18:26:44,012 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 [2020-10-19 18:26:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:44,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-19 18:26:44,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:44,328 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 [2020-10-19 18:26:44,328 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:44,333 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:44,333 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:44,333 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:26:44,388 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 [2020-10-19 18:26:44,388 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:44,403 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:44,404 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:44,404 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-10-19 18:26:44,485 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:44,485 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 [2020-10-19 18:26:44,487 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:44,509 INFO L625 ElimStorePlain]: treesize reduction 32, result has 38.5 percent of original size [2020-10-19 18:26:44,510 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:44,510 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:20 [2020-10-19 18:26:44,589 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 [2020-10-19 18:26:44,590 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:44,596 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:44,597 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. [2020-10-19 18:26:44,598 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:15 [2020-10-19 18:26:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-19 18:26:44,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:26:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-19 18:26:45,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295412691] [2020-10-19 18:26:45,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:26:45,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 16 [2020-10-19 18:26:45,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265443288] [2020-10-19 18:26:45,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-19 18:26:45,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:26:45,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-19 18:26:45,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-10-19 18:26:45,092 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand 17 states. [2020-10-19 18:26:46,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:46,836 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2020-10-19 18:26:46,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-19 18:26:46,837 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 57 [2020-10-19 18:26:46,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:46,839 INFO L225 Difference]: With dead ends: 118 [2020-10-19 18:26:46,839 INFO L226 Difference]: Without dead ends: 118 [2020-10-19 18:26:46,843 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 [2020-10-19 18:26:46,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-19 18:26:46,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 95. [2020-10-19 18:26:46,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-19 18:26:46,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 106 transitions. [2020-10-19 18:26:46,853 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 106 transitions. Word has length 57 [2020-10-19 18:26:46,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:46,854 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 106 transitions. [2020-10-19 18:26:46,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-19 18:26:46,854 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 106 transitions. [2020-10-19 18:26:46,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-19 18:26:46,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:46,859 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] [2020-10-19 18:26:47,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-19 18:26:47,060 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]=== [2020-10-19 18:26:47,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:47,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1489991722, now seen corresponding path program 1 times [2020-10-19 18:26:47,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:26:47,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341207206] [2020-10-19 18:26:47,061 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 [2020-10-19 18:26:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:47,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-19 18:26:47,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:47,395 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 [2020-10-19 18:26:47,395 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:47,399 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:47,400 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:47,400 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:26:47,471 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 [2020-10-19 18:26:47,471 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:47,484 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:47,490 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 [2020-10-19 18:26:47,490 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:47,501 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:47,502 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:47,502 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:28 [2020-10-19 18:26:47,584 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:47,584 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 [2020-10-19 18:26:47,585 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:47,618 INFO L625 ElimStorePlain]: treesize reduction 32, result has 47.5 percent of original size [2020-10-19 18:26:47,618 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:47,618 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:29 [2020-10-19 18:26:47,697 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 [2020-10-19 18:26:47,698 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:47,710 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:47,713 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 [2020-10-19 18:26:47,714 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:47,723 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:47,724 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. [2020-10-19 18:26:47,725 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:36, output treesize:14 [2020-10-19 18:26:47,792 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-19 18:26:47,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:26:48,828 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-10-19 18:26:49,174 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-10-19 18:26:49,894 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-10-19 18:26:50,231 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-19 18:26:50,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341207206] [2020-10-19 18:26:50,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:26:50,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2020-10-19 18:26:50,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105725580] [2020-10-19 18:26:50,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-19 18:26:50,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:26:50,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-19 18:26:50,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2020-10-19 18:26:50,234 INFO L87 Difference]: Start difference. First operand 95 states and 106 transitions. Second operand 22 states. [2020-10-19 18:26:54,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:54,914 INFO L93 Difference]: Finished difference Result 124 states and 135 transitions. [2020-10-19 18:26:54,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-19 18:26:54,916 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 57 [2020-10-19 18:26:54,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:54,917 INFO L225 Difference]: With dead ends: 124 [2020-10-19 18:26:54,917 INFO L226 Difference]: Without dead ends: 124 [2020-10-19 18:26:54,918 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 [2020-10-19 18:26:54,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-19 18:26:54,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 98. [2020-10-19 18:26:54,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-19 18:26:54,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2020-10-19 18:26:54,923 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 57 [2020-10-19 18:26:54,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:54,924 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2020-10-19 18:26:54,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-19 18:26:54,924 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2020-10-19 18:26:54,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-19 18:26:54,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:54,925 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] [2020-10-19 18:26:55,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-10-19 18:26:55,139 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]=== [2020-10-19 18:26:55,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:55,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1364919037, now seen corresponding path program 1 times [2020-10-19 18:26:55,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:26:55,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080722953] [2020-10-19 18:26:55,141 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 [2020-10-19 18:26:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:55,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-19 18:26:55,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:55,569 INFO L350 Elim1Store]: treesize reduction 163, result has 15.1 percent of original size [2020-10-19 18:26:55,570 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 [2020-10-19 18:26:55,570 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:55,586 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:55,586 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:55,586 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:39 [2020-10-19 18:26:55,692 INFO L350 Elim1Store]: treesize reduction 188, result has 15.7 percent of original size [2020-10-19 18:26:55,692 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 [2020-10-19 18:26:55,693 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:55,714 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:55,714 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:55,715 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:58, output treesize:39 [2020-10-19 18:26:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-19 18:26:56,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:26:56,826 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:26:56,837 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:56,838 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:26:56,839 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:57, output treesize:57 [2020-10-19 18:26:56,915 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 [2020-10-19 18:26:56,971 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-10-19 18:26:57,193 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 11 [2020-10-19 18:26:57,193 INFO L625 ElimStorePlain]: treesize reduction 16100, result has 0.1 percent of original size [2020-10-19 18:26:57,194 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:57,200 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:57,200 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:57,200 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:98, output treesize:19 [2020-10-19 18:26:57,281 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-19 18:26:57,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080722953] [2020-10-19 18:26:57,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:57,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2020-10-19 18:26:57,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653902276] [2020-10-19 18:26:57,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-19 18:26:57,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:26:57,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-19 18:26:57,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-19 18:26:57,285 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand 18 states. [2020-10-19 18:27:00,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:27:00,087 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2020-10-19 18:27:00,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-19 18:27:00,087 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 63 [2020-10-19 18:27:00,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:27:00,089 INFO L225 Difference]: With dead ends: 107 [2020-10-19 18:27:00,089 INFO L226 Difference]: Without dead ends: 104 [2020-10-19 18:27:00,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 106 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2020-10-19 18:27:00,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-19 18:27:00,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 98. [2020-10-19 18:27:00,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-19 18:27:00,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2020-10-19 18:27:00,095 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 63 [2020-10-19 18:27:00,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:27:00,095 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2020-10-19 18:27:00,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-19 18:27:00,095 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2020-10-19 18:27:00,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-19 18:27:00,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:27:00,097 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] [2020-10-19 18:27:00,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-10-19 18:27:00,311 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]=== [2020-10-19 18:27:00,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:27:00,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1862952617, now seen corresponding path program 1 times [2020-10-19 18:27:00,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:27:00,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770763984] [2020-10-19 18:27:00,313 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 [2020-10-19 18:27:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:00,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-19 18:27:00,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:27:00,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770763984] [2020-10-19 18:27:00,558 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 18:27:00,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [327681009] [2020-10-19 18:27:00,559 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 [2020-10-19 18:27:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:00,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-19 18:27:00,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:27:00,963 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 18:27:00,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383513440] [2020-10-19 18:27:00,963 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 [2020-10-19 18:27:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:01,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-19 18:27:01,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:27:01,140 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 18:27:01,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:27:01,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-19 18:27:01,141 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-19 18:27:01,141 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:27:01,747 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 [2020-10-19 18:27:01,763 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-19 18:27:01,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:27:01 BoogieIcfgContainer [2020-10-19 18:27:01,763 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:27:01,764 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:27:01,764 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:27:01,764 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:27:01,764 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:26:33" (3/4) ... [2020-10-19 18:27:01,768 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:27:01,768 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:27:01,770 INFO L168 Benchmark]: Toolchain (without parser) took 30127.97 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 347.6 MB). Free memory was 960.0 MB in the beginning and 987.3 MB in the end (delta: -27.4 MB). Peak memory consumption was 320.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:27:01,770 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:27:01,771 INFO L168 Benchmark]: CACSL2BoogieTranslator took 697.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -144.0 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:27:01,771 INFO L168 Benchmark]: Boogie Preprocessor took 78.00 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:27:01,771 INFO L168 Benchmark]: RCFGBuilder took 877.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 58.4 MB). Peak memory consumption was 58.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:27:01,772 INFO L168 Benchmark]: TraceAbstraction took 28458.59 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 210.2 MB). Free memory was 1.0 GB in the beginning and 987.3 MB in the end (delta: 53.0 MB). Peak memory consumption was 263.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:27:01,772 INFO L168 Benchmark]: Witness Printer took 4.50 ms. Allocated memory is still 1.4 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:27:01,775 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 697.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -144.0 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 78.00 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 877.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 58.4 MB). Peak memory consumption was 58.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 28458.59 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 210.2 MB). Free memory was 1.0 GB in the beginning and 987.3 MB in the end (delta: 53.0 MB). Peak memory consumption was 263.2 MB. Max. memory is 11.5 GB. * Witness Printer took 4.50 ms. Allocated memory is still 1.4 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 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: 28.3s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 14.2s, 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, 9.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1086 GetRequests, 915 SyntacticMatches, 6 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 8.0s 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, 1.4s SatisfiabilityAnalysisTime, 7.5s 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...