./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0137.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0137.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1c2d362b3c58f37a9b1e964b448eb3d54c85d26676417295a73853b3a7cc716a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:28:00,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:28:00,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:28:00,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:28:00,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:28:00,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:28:00,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:28:00,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:28:00,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:28:00,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:28:00,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:28:00,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:28:00,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:28:00,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:28:00,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:28:00,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:28:00,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:28:00,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:28:00,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:28:00,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:28:00,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:28:00,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:28:00,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:28:00,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:28:00,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:28:00,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:28:00,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:28:00,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:28:00,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:28:00,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:28:00,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:28:00,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:28:00,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:28:00,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:28:00,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:28:00,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:28:00,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:28:00,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:28:00,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:28:00,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:28:00,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:28:00,495 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-19 05:28:00,531 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:28:00,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:28:00,532 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:28:00,532 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:28:00,533 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:28:00,533 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:28:00,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:28:00,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:28:00,534 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:28:00,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:28:00,535 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:28:00,535 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 05:28:00,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:28:00,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:28:00,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:28:00,536 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 05:28:00,536 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 05:28:00,536 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 05:28:00,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:28:00,537 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 05:28:00,537 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:28:00,537 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:28:00,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:28:00,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:28:00,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:28:00,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:28:00,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:28:00,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:28:00,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:28:00,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:28:00,540 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:28:00,547 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c2d362b3c58f37a9b1e964b448eb3d54c85d26676417295a73853b3a7cc716a [2021-11-19 05:28:00,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:28:00,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:28:00,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:28:00,903 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:28:00,904 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:28:00,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/memsafety/test-0137.i [2021-11-19 05:28:00,979 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/data/0ea827aaa/a076e3ae7a0c4787bd6a8a53a291e20f/FLAG1a9cebbf8 [2021-11-19 05:28:01,671 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:28:01,675 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/sv-benchmarks/c/memsafety/test-0137.i [2021-11-19 05:28:01,696 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/data/0ea827aaa/a076e3ae7a0c4787bd6a8a53a291e20f/FLAG1a9cebbf8 [2021-11-19 05:28:01,895 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/data/0ea827aaa/a076e3ae7a0c4787bd6a8a53a291e20f [2021-11-19 05:28:01,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:28:01,904 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 05:28:01,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:28:01,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:28:01,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:28:01,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:28:01" (1/1) ... [2021-11-19 05:28:01,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@569f8c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:01, skipping insertion in model container [2021-11-19 05:28:01,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:28:01" (1/1) ... [2021-11-19 05:28:01,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:28:01,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:28:02,317 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:28:02,327 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) [2021-11-19 05:28:02,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6681788a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:02, skipping insertion in model container [2021-11-19 05:28:02,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:28:02,329 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-19 05:28:02,331 INFO L158 Benchmark]: Toolchain (without parser) took 425.93ms. Allocated memory is still 90.2MB. Free memory was 53.4MB in the beginning and 61.3MB in the end (delta: -7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 05:28:02,332 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 90.2MB. Free memory was 60.1MB in the beginning and 60.1MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:28:02,332 INFO L158 Benchmark]: CACSL2BoogieTranslator took 421.90ms. Allocated memory is still 90.2MB. Free memory was 53.2MB in the beginning and 61.3MB in the end (delta: -8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 05:28:02,334 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 90.2MB. Free memory was 60.1MB in the beginning and 60.1MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 421.90ms. Allocated memory is still 90.2MB. Free memory was 53.2MB in the beginning and 61.3MB in the end (delta: -8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 585]: 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0137.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1c2d362b3c58f37a9b1e964b448eb3d54c85d26676417295a73853b3a7cc716a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:28:04,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:28:04,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:28:04,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:28:04,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:28:04,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:28:04,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:28:04,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:28:04,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:28:04,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:28:04,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:28:04,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:28:04,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:28:04,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:28:04,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:28:04,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:28:04,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:28:04,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:28:04,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:28:04,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:28:04,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:28:04,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:28:04,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:28:04,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:28:04,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:28:04,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:28:04,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:28:04,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:28:04,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:28:04,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:28:04,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:28:04,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:28:04,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:28:04,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:28:04,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:28:04,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:28:04,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:28:04,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:28:04,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:28:04,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:28:04,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:28:04,829 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-19 05:28:04,869 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:28:04,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:28:04,870 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:28:04,870 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:28:04,871 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:28:04,871 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:28:04,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:28:04,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:28:04,873 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:28:04,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:28:04,874 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:28:04,874 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 05:28:04,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:28:04,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:28:04,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:28:04,875 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 05:28:04,875 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 05:28:04,876 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 05:28:04,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:28:04,876 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 05:28:04,876 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 05:28:04,876 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 05:28:04,877 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:28:04,877 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:28:04,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:28:04,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:28:04,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:28:04,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:28:04,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:28:04,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:28:04,878 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 05:28:04,879 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 05:28:04,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:28:04,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 05:28:04,879 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c2d362b3c58f37a9b1e964b448eb3d54c85d26676417295a73853b3a7cc716a [2021-11-19 05:28:05,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:28:05,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:28:05,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:28:05,248 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:28:05,249 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:28:05,250 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/memsafety/test-0137.i [2021-11-19 05:28:05,317 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/data/17f0e7c5e/199d41cf69f54388bb38a2a7f620799f/FLAG338a671f1 [2021-11-19 05:28:05,924 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:28:05,925 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/sv-benchmarks/c/memsafety/test-0137.i [2021-11-19 05:28:05,946 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/data/17f0e7c5e/199d41cf69f54388bb38a2a7f620799f/FLAG338a671f1 [2021-11-19 05:28:06,159 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/data/17f0e7c5e/199d41cf69f54388bb38a2a7f620799f [2021-11-19 05:28:06,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:28:06,163 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 05:28:06,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:28:06,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:28:06,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:28:06,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:28:06" (1/1) ... [2021-11-19 05:28:06,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@638000fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:06, skipping insertion in model container [2021-11-19 05:28:06,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:28:06" (1/1) ... [2021-11-19 05:28:06,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:28:06,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:28:06,568 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:28:06,580 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 05:28:06,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:28:06,623 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:28:06,629 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:28:06,675 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:28:06,733 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:28:06,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:06 WrapperNode [2021-11-19 05:28:06,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:28:06,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:28:06,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:28:06,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:28:06,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:06" (1/1) ... [2021-11-19 05:28:06,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:06" (1/1) ... [2021-11-19 05:28:06,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:06" (1/1) ... [2021-11-19 05:28:06,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:06" (1/1) ... [2021-11-19 05:28:06,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:06" (1/1) ... [2021-11-19 05:28:06,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:06" (1/1) ... [2021-11-19 05:28:06,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:06" (1/1) ... [2021-11-19 05:28:06,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:28:06,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:28:06,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:28:06,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:28:06,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:06" (1/1) ... [2021-11-19 05:28:06,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:28:06,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:28:06,886 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:28:06,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:28:06,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 05:28:06,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:28:06,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 05:28:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-19 05:28:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-19 05:28:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-19 05:28:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-19 05:28:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-19 05:28:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-19 05:28:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-19 05:28:06,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-19 05:28:06,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2021-11-19 05:28:06,943 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-19 05:28:06,943 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-19 05:28:06,943 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2021-11-19 05:28:06,943 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_insert [2021-11-19 05:28:06,943 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_read [2021-11-19 05:28:06,944 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_destroy [2021-11-19 05:28:06,944 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2021-11-19 05:28:06,944 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_seek_max [2021-11-19 05:28:06,944 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort [2021-11-19 05:28:06,944 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 05:28:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-19 05:28:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-19 05:28:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-19 05:28:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-19 05:28:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-19 05:28:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:28:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-19 05:28:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-19 05:28:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-19 05:28:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-19 05:28:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-19 05:28:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-19 05:28:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-19 05:28:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-19 05:28:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-19 05:28:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-19 05:28:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-19 05:28:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-19 05:28:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-19 05:28:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-19 05:28:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-19 05:28:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-19 05:28:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-19 05:28:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-19 05:28:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-19 05:28:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-19 05:28:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-19 05:28:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-19 05:28:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-19 05:28:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-19 05:28:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-19 05:28:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-19 05:28:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-19 05:28:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-19 05:28:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-19 05:28:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-19 05:28:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-19 05:28:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-19 05:28:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-19 05:28:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-19 05:28:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-19 05:28:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-19 05:28:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-19 05:28:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-19 05:28:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-19 05:28:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-19 05:28:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-19 05:28:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-19 05:28:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-19 05:28:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-19 05:28:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-19 05:28:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-19 05:28:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-19 05:28:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-19 05:28:06,961 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-19 05:28:06,961 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-19 05:28:06,961 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-19 05:28:06,961 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-19 05:28:06,961 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-19 05:28:06,962 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-19 05:28:06,962 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-19 05:28:06,962 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-19 05:28:06,963 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-19 05:28:06,963 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-19 05:28:06,963 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-19 05:28:06,963 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-19 05:28:06,963 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-19 05:28:06,963 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-19 05:28:06,963 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-19 05:28:06,963 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-19 05:28:06,964 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-19 05:28:06,964 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-19 05:28:06,964 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-19 05:28:06,964 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-19 05:28:06,964 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-19 05:28:06,964 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-19 05:28:06,964 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-19 05:28:06,965 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-19 05:28:06,965 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-19 05:28:06,965 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-19 05:28:06,965 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-19 05:28:06,965 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-19 05:28:06,965 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-19 05:28:06,965 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-19 05:28:06,965 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-19 05:28:06,965 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-19 05:28:06,965 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-19 05:28:06,976 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-19 05:28:06,976 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-19 05:28:06,976 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-19 05:28:06,976 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-19 05:28:06,977 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-19 05:28:06,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-19 05:28:06,977 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-19 05:28:06,977 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-19 05:28:06,977 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-19 05:28:06,978 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-19 05:28:06,978 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-19 05:28:06,978 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-19 05:28:06,979 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-19 05:28:06,982 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-19 05:28:06,982 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-19 05:28:06,982 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-19 05:28:06,983 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-19 05:28:06,983 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-19 05:28:06,985 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-19 05:28:06,985 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-19 05:28:06,985 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-19 05:28:06,987 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-19 05:28:06,991 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-19 05:28:06,991 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-19 05:28:06,991 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-19 05:28:06,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-19 05:28:06,991 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-19 05:28:06,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 05:28:06,992 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-19 05:28:06,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 05:28:06,992 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2021-11-19 05:28:06,992 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-19 05:28:06,992 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-19 05:28:06,992 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2021-11-19 05:28:06,992 INFO L130 BoogieDeclarations]: Found specification of procedure gl_insert [2021-11-19 05:28:06,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 05:28:06,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 05:28:06,993 INFO L130 BoogieDeclarations]: Found specification of procedure gl_read [2021-11-19 05:28:06,993 INFO L130 BoogieDeclarations]: Found specification of procedure gl_destroy [2021-11-19 05:28:06,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 05:28:06,993 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2021-11-19 05:28:06,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 05:28:06,993 INFO L130 BoogieDeclarations]: Found specification of procedure gl_seek_max [2021-11-19 05:28:06,993 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort [2021-11-19 05:28:06,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 05:28:06,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 05:28:06,994 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 05:28:06,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 05:28:06,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 05:28:06,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:28:06,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 05:28:06,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 05:28:06,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 05:28:07,347 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:28:07,352 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:28:08,054 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:28:08,070 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:28:08,071 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-19 05:28:08,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:28:08 BoogieIcfgContainer [2021-11-19 05:28:08,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:28:08,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:28:08,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:28:08,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:28:08,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:28:06" (1/3) ... [2021-11-19 05:28:08,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a7d068f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:28:08, skipping insertion in model container [2021-11-19 05:28:08,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:06" (2/3) ... [2021-11-19 05:28:08,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a7d068f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:28:08, skipping insertion in model container [2021-11-19 05:28:08,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:28:08" (3/3) ... [2021-11-19 05:28:08,084 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0137.i [2021-11-19 05:28:08,090 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:28:08,090 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2021-11-19 05:28:08,148 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:28:08,158 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 05:28:08,158 INFO L340 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2021-11-19 05:28:08,176 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 85 states have (on average 1.8235294117647058) internal successors, (155), 145 states have internal predecessors, (155), 16 states have call successors, (16), 13 states have call predecessors, (16), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 05:28:08,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 05:28:08,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:28:08,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:28:08,185 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting gl_insertErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-11-19 05:28:08,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:28:08,191 INFO L85 PathProgramCache]: Analyzing trace with hash 584488031, now seen corresponding path program 1 times [2021-11-19 05:28:08,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:28:08,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378136431] [2021-11-19 05:28:08,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:28:08,204 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:28:08,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:28:08,207 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:28:08,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 05:28:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:28:08,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 05:28:08,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:28:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:08,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:28:08,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:08,484 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:28:08,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378136431] [2021-11-19 05:28:08,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378136431] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:28:08,485 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:28:08,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 05:28:08,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756598643] [2021-11-19 05:28:08,488 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:28:08,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 05:28:08,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:28:08,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 05:28:08,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:28:08,526 INFO L87 Difference]: Start difference. First operand has 174 states, 85 states have (on average 1.8235294117647058) internal successors, (155), 145 states have internal predecessors, (155), 16 states have call successors, (16), 13 states have call predecessors, (16), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:28:08,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:28:08,566 INFO L93 Difference]: Finished difference Result 165 states and 174 transitions. [2021-11-19 05:28:08,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:28:08,568 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-19 05:28:08,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:28:08,578 INFO L225 Difference]: With dead ends: 165 [2021-11-19 05:28:08,578 INFO L226 Difference]: Without dead ends: 162 [2021-11-19 05:28:08,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:28:08,583 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:28:08,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:28:08,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-19 05:28:08,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-11-19 05:28:08,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 78 states have (on average 1.794871794871795) internal successors, (140), 135 states have internal predecessors, (140), 16 states have call successors, (16), 13 states have call predecessors, (16), 12 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-19 05:28:08,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 171 transitions. [2021-11-19 05:28:08,636 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 171 transitions. Word has length 10 [2021-11-19 05:28:08,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:28:08,637 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 171 transitions. [2021-11-19 05:28:08,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:28:08,637 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 171 transitions. [2021-11-19 05:28:08,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 05:28:08,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:28:08,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:28:08,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:28:08,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:28:08,850 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting gl_insertErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-11-19 05:28:08,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:28:08,851 INFO L85 PathProgramCache]: Analyzing trace with hash 584488093, now seen corresponding path program 1 times [2021-11-19 05:28:08,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:28:08,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [536398756] [2021-11-19 05:28:08,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:28:08,852 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:28:08,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:28:08,855 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:28:08,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 05:28:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:28:08,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:28:08,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:28:09,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:28:09,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:09,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:28:09,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:09,122 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:28:09,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [536398756] [2021-11-19 05:28:09,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [536398756] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:28:09,123 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:28:09,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 05:28:09,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041053117] [2021-11-19 05:28:09,124 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:28:09,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:28:09,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:28:09,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:28:09,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:28:09,127 INFO L87 Difference]: Start difference. First operand 162 states and 171 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:28:09,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:28:09,404 INFO L93 Difference]: Finished difference Result 161 states and 170 transitions. [2021-11-19 05:28:09,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:28:09,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-19 05:28:09,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:28:09,407 INFO L225 Difference]: With dead ends: 161 [2021-11-19 05:28:09,407 INFO L226 Difference]: Without dead ends: 161 [2021-11-19 05:28:09,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:28:09,409 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 3 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:28:09,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 273 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:28:09,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-11-19 05:28:09,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2021-11-19 05:28:09,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 78 states have (on average 1.7820512820512822) internal successors, (139), 134 states have internal predecessors, (139), 16 states have call successors, (16), 13 states have call predecessors, (16), 12 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-19 05:28:09,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 170 transitions. [2021-11-19 05:28:09,435 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 170 transitions. Word has length 10 [2021-11-19 05:28:09,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:28:09,436 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 170 transitions. [2021-11-19 05:28:09,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:28:09,436 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 170 transitions. [2021-11-19 05:28:09,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 05:28:09,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:28:09,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:28:09,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 05:28:09,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:28:09,659 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting gl_insertErr1REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-11-19 05:28:09,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:28:09,660 INFO L85 PathProgramCache]: Analyzing trace with hash 584488094, now seen corresponding path program 1 times [2021-11-19 05:28:09,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:28:09,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578062445] [2021-11-19 05:28:09,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:28:09,661 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:28:09,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:28:09,664 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:28:09,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 05:28:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:28:09,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:28:09,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:28:09,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:28:09,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:09,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:28:09,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:09,966 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:28:09,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578062445] [2021-11-19 05:28:09,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578062445] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:28:09,967 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:28:09,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 05:28:09,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949155988] [2021-11-19 05:28:09,968 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:28:09,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:28:09,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:28:09,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:28:09,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:28:09,969 INFO L87 Difference]: Start difference. First operand 161 states and 170 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:28:10,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:28:10,617 INFO L93 Difference]: Finished difference Result 160 states and 169 transitions. [2021-11-19 05:28:10,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:28:10,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-19 05:28:10,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:28:10,623 INFO L225 Difference]: With dead ends: 160 [2021-11-19 05:28:10,623 INFO L226 Difference]: Without dead ends: 160 [2021-11-19 05:28:10,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:28:10,625 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 2 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:28:10,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 387 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 05:28:10,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-19 05:28:10,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-11-19 05:28:10,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 78 states have (on average 1.7692307692307692) internal successors, (138), 133 states have internal predecessors, (138), 16 states have call successors, (16), 13 states have call predecessors, (16), 12 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-19 05:28:10,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 169 transitions. [2021-11-19 05:28:10,651 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 169 transitions. Word has length 10 [2021-11-19 05:28:10,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:28:10,651 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 169 transitions. [2021-11-19 05:28:10,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:28:10,652 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 169 transitions. [2021-11-19 05:28:10,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 05:28:10,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:28:10,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:28:10,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 05:28:10,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:28:10,853 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting list_addErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-11-19 05:28:10,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:28:10,854 INFO L85 PathProgramCache]: Analyzing trace with hash 687588142, now seen corresponding path program 1 times [2021-11-19 05:28:10,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:28:10,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976412380] [2021-11-19 05:28:10,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:28:10,855 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:28:10,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:28:10,856 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:28:10,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 05:28:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:28:11,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 05:28:11,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:28:11,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:28:11,086 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 05:28:11,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-19 05:28:11,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:11,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:28:29,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:29,842 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:28:29,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976412380] [2021-11-19 05:28:29,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [976412380] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:28:29,842 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:28:29,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 05:28:29,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718444722] [2021-11-19 05:28:29,843 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:28:29,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:28:29,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:28:29,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:28:29,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=49, Unknown=3, NotChecked=0, Total=72 [2021-11-19 05:28:29,844 INFO L87 Difference]: Start difference. First operand 160 states and 169 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:28:30,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:28:30,465 INFO L93 Difference]: Finished difference Result 227 states and 243 transitions. [2021-11-19 05:28:30,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:28:30,466 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2021-11-19 05:28:30,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:28:30,469 INFO L225 Difference]: With dead ends: 227 [2021-11-19 05:28:30,469 INFO L226 Difference]: Without dead ends: 227 [2021-11-19 05:28:30,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=20, Invalid=49, Unknown=3, NotChecked=0, Total=72 [2021-11-19 05:28:30,471 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 109 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 223 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:28:30,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 746 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 298 Invalid, 0 Unknown, 223 Unchecked, 0.6s Time] [2021-11-19 05:28:30,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-19 05:28:30,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 202. [2021-11-19 05:28:30,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 111 states have (on average 1.7657657657657657) internal successors, (196), 163 states have internal predecessors, (196), 23 states have call successors, (23), 19 states have call predecessors, (23), 16 states have return successors, (23), 20 states have call predecessors, (23), 22 states have call successors, (23) [2021-11-19 05:28:30,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 242 transitions. [2021-11-19 05:28:30,514 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 242 transitions. Word has length 13 [2021-11-19 05:28:30,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:28:30,515 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 242 transitions. [2021-11-19 05:28:30,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:28:30,515 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 242 transitions. [2021-11-19 05:28:30,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 05:28:30,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:28:30,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:28:30,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 05:28:30,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:28:30,717 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting list_addErr1REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-11-19 05:28:30,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:28:30,718 INFO L85 PathProgramCache]: Analyzing trace with hash 687588143, now seen corresponding path program 1 times [2021-11-19 05:28:30,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:28:30,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770342747] [2021-11-19 05:28:30,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:28:30,719 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:28:30,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:28:30,720 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:28:30,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 05:28:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:28:30,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 05:28:30,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:28:30,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:28:30,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:28:31,121 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 05:28:31,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-19 05:28:31,133 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 05:28:31,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2021-11-19 05:28:31,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:31,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:28:42,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:42,854 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:28:42,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770342747] [2021-11-19 05:28:42,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770342747] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:28:42,854 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:28:42,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 05:28:42,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511903874] [2021-11-19 05:28:42,855 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:28:42,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:28:42,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:28:42,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:28:42,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=66, Unknown=1, NotChecked=0, Total=90 [2021-11-19 05:28:42,856 INFO L87 Difference]: Start difference. First operand 202 states and 242 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 5 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:28:44,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:28:44,697 INFO L93 Difference]: Finished difference Result 230 states and 246 transitions. [2021-11-19 05:28:44,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:28:44,698 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 5 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2021-11-19 05:28:44,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:28:44,701 INFO L225 Difference]: With dead ends: 230 [2021-11-19 05:28:44,701 INFO L226 Difference]: Without dead ends: 230 [2021-11-19 05:28:44,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=23, Invalid=66, Unknown=1, NotChecked=0, Total=90 [2021-11-19 05:28:44,703 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 115 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 213 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:28:44,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 630 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 368 Invalid, 0 Unknown, 213 Unchecked, 1.8s Time] [2021-11-19 05:28:44,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-11-19 05:28:44,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 206. [2021-11-19 05:28:44,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 114 states have (on average 1.719298245614035) internal successors, (196), 165 states have internal predecessors, (196), 24 states have call successors, (24), 20 states have call predecessors, (24), 17 states have return successors, (25), 21 states have call predecessors, (25), 23 states have call successors, (25) [2021-11-19 05:28:44,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 245 transitions. [2021-11-19 05:28:44,733 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 245 transitions. Word has length 13 [2021-11-19 05:28:44,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:28:44,733 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 245 transitions. [2021-11-19 05:28:44,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 5 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:28:44,734 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 245 transitions. [2021-11-19 05:28:44,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 05:28:44,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:28:44,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:28:44,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 05:28:44,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:28:44,950 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __list_addErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-11-19 05:28:44,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:28:44,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1239538309, now seen corresponding path program 1 times [2021-11-19 05:28:44,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:28:44,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1098628736] [2021-11-19 05:28:44,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:28:44,952 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:28:44,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:28:44,953 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:28:44,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 05:28:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:28:45,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-19 05:28:45,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:28:45,186 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-19 05:28:45,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 21 [2021-11-19 05:28:45,507 INFO L354 Elim1Store]: treesize reduction 9, result has 64.0 percent of original size [2021-11-19 05:28:45,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 34 [2021-11-19 05:28:45,725 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-19 05:28:45,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 60 treesize of output 15 [2021-11-19 05:28:45,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-11-19 05:28:45,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:45,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:28:45,933 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-19 05:28:45,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-11-19 05:29:02,526 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_gl_insert_~node~0.base_13 (_ BitVec 32)) (gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_gl_insert_~node~0.base_13))))) (= (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_13 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_13) gl_insert_~node~0.offset v_DerPreprocessor_1) (bvadd gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) gl_insert_~node~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) gl_insert_~node~0.offset) v_DerPreprocessor_4)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) |c_~#gl_list~0.base|))) is different from false [2021-11-19 05:29:04,621 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_gl_insert_~node~0.base_13 (_ BitVec 32)) (gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_gl_insert_~node~0.base_13)))))) (= (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_13 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_13) gl_insert_~node~0.offset v_DerPreprocessor_1) (bvadd gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) gl_insert_~node~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) gl_insert_~node~0.offset) v_DerPreprocessor_4)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) |c_~#gl_list~0.base|))) is different from false [2021-11-19 05:29:04,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:29:04,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:29:04,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1098628736] [2021-11-19 05:29:04,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1098628736] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:29:04,879 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:29:04,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 11] imperfect sequences [] total 13 [2021-11-19 05:29:04,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116491958] [2021-11-19 05:29:04,880 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:29:04,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 05:29:04,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:29:04,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 05:29:04,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=8, NotChecked=42, Total=182 [2021-11-19 05:29:04,882 INFO L87 Difference]: Start difference. First operand 206 states and 245 transitions. Second operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 6 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:29:08,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:29:08,264 INFO L93 Difference]: Finished difference Result 222 states and 261 transitions. [2021-11-19 05:29:08,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 05:29:08,265 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 6 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-11-19 05:29:08,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:29:08,267 INFO L225 Difference]: With dead ends: 222 [2021-11-19 05:29:08,267 INFO L226 Difference]: Without dead ends: 222 [2021-11-19 05:29:08,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=70, Invalid=271, Unknown=9, NotChecked=70, Total=420 [2021-11-19 05:29:08,269 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 46 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 294 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:29:08,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 1218 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 345 Invalid, 0 Unknown, 294 Unchecked, 0.9s Time] [2021-11-19 05:29:08,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-19 05:29:08,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 214. [2021-11-19 05:29:08,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 120 states have (on average 1.7416666666666667) internal successors, (209), 172 states have internal predecessors, (209), 25 states have call successors, (25), 21 states have call predecessors, (25), 18 states have return successors, (26), 21 states have call predecessors, (26), 24 states have call successors, (26) [2021-11-19 05:29:08,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 260 transitions. [2021-11-19 05:29:08,282 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 260 transitions. Word has length 16 [2021-11-19 05:29:08,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:29:08,282 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 260 transitions. [2021-11-19 05:29:08,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 6 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:29:08,283 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 260 transitions. [2021-11-19 05:29:08,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 05:29:08,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:29:08,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:29:08,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 05:29:08,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:29:08,496 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __list_addErr1REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-11-19 05:29:08,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:29:08,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1239538310, now seen corresponding path program 1 times [2021-11-19 05:29:08,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:29:08,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782082519] [2021-11-19 05:29:08,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:29:08,498 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:29:08,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:29:08,498 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:29:08,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 05:29:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:29:08,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-19 05:29:08,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:29:08,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:29:08,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:29:08,931 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:29:08,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-19 05:29:08,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-19 05:29:09,146 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-19 05:29:09,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 116 treesize of output 71 [2021-11-19 05:29:09,204 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-19 05:29:09,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 68 treesize of output 23 [2021-11-19 05:29:09,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2021-11-19 05:29:09,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-19 05:29:09,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:29:09,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:29:12,658 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse0 (bvadd gl_insert_~node~0.offset (_ bv1 32))) (.cse1 (bvadd (_ bv2 32) gl_insert_~node~0.offset)) (.cse2 (bvadd (_ bv3 32) gl_insert_~node~0.offset))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| c_gl_insert_~node~0.base (store (store (store (store (select |c_#memory_$Pointer$.offset| c_gl_insert_~node~0.base) gl_insert_~node~0.offset v_DerPreprocessor_9) .cse0 v_DerPreprocessor_10) .cse1 v_DerPreprocessor_11) .cse2 v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| c_gl_insert_~node~0.base (store (store (store (store (select |c_#memory_$Pointer$.base| c_gl_insert_~node~0.base) gl_insert_~node~0.offset v_DerPreprocessor_5) .cse0 v_DerPreprocessor_6) .cse1 v_DerPreprocessor_7) .cse2 v_DerPreprocessor_8)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))) (forall ((gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| c_gl_insert_~node~0.base (store (store (store (store (select |c_#memory_$Pointer$.offset| c_gl_insert_~node~0.base) gl_insert_~node~0.offset v_DerPreprocessor_9) (bvadd gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_10) (bvadd (_ bv2 32) gl_insert_~node~0.offset) v_DerPreprocessor_11) (bvadd (_ bv3 32) gl_insert_~node~0.offset) v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3))))) is different from false [2021-11-19 05:29:30,008 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_gl_insert_~node~0.base_14 (_ BitVec 32))) (or (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse0 (bvadd gl_insert_~node~0.offset (_ bv1 32))) (.cse1 (bvadd (_ bv2 32) gl_insert_~node~0.offset)) (.cse2 (bvadd (_ bv3 32) gl_insert_~node~0.offset))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_9) .cse0 v_DerPreprocessor_10) .cse1 v_DerPreprocessor_11) .cse2 v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (select (store |c_#length| v_gl_insert_~node~0.base_14 (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_5) .cse0 v_DerPreprocessor_6) .cse1 v_DerPreprocessor_7) .cse2 v_DerPreprocessor_8)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))) (forall ((gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_9) (bvadd gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_10) (bvadd (_ bv2 32) gl_insert_~node~0.offset) v_DerPreprocessor_11) (bvadd (_ bv3 32) gl_insert_~node~0.offset) v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3))))) (not (= (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_gl_insert_~node~0.base_14)))))))) (_ bv0 1))))) is different from false [2021-11-19 05:29:32,203 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_gl_insert_~node~0.base_14 (_ BitVec 32))) (or (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse0 (bvadd gl_insert_~node~0.offset (_ bv1 32))) (.cse1 (bvadd (_ bv2 32) gl_insert_~node~0.offset)) (.cse2 (bvadd (_ bv3 32) gl_insert_~node~0.offset))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_9) .cse0 v_DerPreprocessor_10) .cse1 v_DerPreprocessor_11) .cse2 v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (select (store |c_#length| v_gl_insert_~node~0.base_14 (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_5) .cse0 v_DerPreprocessor_6) .cse1 v_DerPreprocessor_7) .cse2 v_DerPreprocessor_8)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))) (forall ((gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_9) (bvadd gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_10) (bvadd (_ bv2 32) gl_insert_~node~0.offset) v_DerPreprocessor_11) (bvadd (_ bv3 32) gl_insert_~node~0.offset) v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_gl_insert_~node~0.base_14))))))))))))))) is different from false [2021-11-19 05:29:32,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:29:32,981 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:29:32,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782082519] [2021-11-19 05:29:32,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1782082519] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:29:32,981 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:29:32,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 11] imperfect sequences [] total 19 [2021-11-19 05:29:32,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758118636] [2021-11-19 05:29:32,982 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:29:32,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 05:29:32,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:29:32,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 05:29:32,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=231, Unknown=6, NotChecked=96, Total=380 [2021-11-19 05:29:32,984 INFO L87 Difference]: Start difference. First operand 214 states and 260 transitions. Second operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 8 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:29:35,079 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_~#gl_list~0.base| (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (= (select (select |c_#memory_$Pointer$.offset| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) |c_~#gl_list~0.offset|) (forall ((v_gl_insert_~node~0.base_14 (_ BitVec 32))) (or (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse0 (bvadd gl_insert_~node~0.offset (_ bv1 32))) (.cse1 (bvadd (_ bv2 32) gl_insert_~node~0.offset)) (.cse2 (bvadd (_ bv3 32) gl_insert_~node~0.offset))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_9) .cse0 v_DerPreprocessor_10) .cse1 v_DerPreprocessor_11) .cse2 v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (select (store |c_#length| v_gl_insert_~node~0.base_14 (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_5) .cse0 v_DerPreprocessor_6) .cse1 v_DerPreprocessor_7) .cse2 v_DerPreprocessor_8)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))) (forall ((gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_9) (bvadd gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_10) (bvadd (_ bv2 32) gl_insert_~node~0.offset) v_DerPreprocessor_11) (bvadd (_ bv3 32) gl_insert_~node~0.offset) v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_gl_insert_~node~0.base_14))))))))))))))) (= |c_~#gl_list~0.offset| (_ bv0 32)) (= (_ bv8 32) (select |c_#length| |c_~#gl_list~0.base|)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |c_#valid| |c_~#gl_list~0.base|))))) is different from false [2021-11-19 05:29:37,228 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_~#gl_list~0.base| (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (forall ((v_gl_insert_~node~0.base_14 (_ BitVec 32))) (or (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse0 (bvadd gl_insert_~node~0.offset (_ bv1 32))) (.cse1 (bvadd (_ bv2 32) gl_insert_~node~0.offset)) (.cse2 (bvadd (_ bv3 32) gl_insert_~node~0.offset))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_9) .cse0 v_DerPreprocessor_10) .cse1 v_DerPreprocessor_11) .cse2 v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (select (store |c_#length| v_gl_insert_~node~0.base_14 (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_5) .cse0 v_DerPreprocessor_6) .cse1 v_DerPreprocessor_7) .cse2 v_DerPreprocessor_8)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))) (forall ((gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_9) (bvadd gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_10) (bvadd (_ bv2 32) gl_insert_~node~0.offset) v_DerPreprocessor_11) (bvadd (_ bv3 32) gl_insert_~node~0.offset) v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3))))) (not (= (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_gl_insert_~node~0.base_14))))))))) (_ bv0 1))))) (= (select (select |c_#memory_$Pointer$.offset| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) |c_~#gl_list~0.offset|) (= |c_~#gl_list~0.offset| (_ bv0 32)) (= (_ bv8 32) (select |c_#length| |c_~#gl_list~0.base|)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |c_#valid| |c_~#gl_list~0.base|))))) is different from false [2021-11-19 05:29:39,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:29:39,795 INFO L93 Difference]: Finished difference Result 214 states and 259 transitions. [2021-11-19 05:29:39,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 05:29:39,797 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 8 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-11-19 05:29:39,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:29:39,800 INFO L225 Difference]: With dead ends: 214 [2021-11-19 05:29:39,800 INFO L226 Difference]: Without dead ends: 214 [2021-11-19 05:29:39,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=66, Invalid=288, Unknown=8, NotChecked=190, Total=552 [2021-11-19 05:29:39,802 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 4 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 461 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:29:39,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1369 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 370 Invalid, 0 Unknown, 461 Unchecked, 2.2s Time] [2021-11-19 05:29:39,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-19 05:29:39,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2021-11-19 05:29:39,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 120 states have (on average 1.7333333333333334) internal successors, (208), 172 states have internal predecessors, (208), 25 states have call successors, (25), 21 states have call predecessors, (25), 18 states have return successors, (26), 21 states have call predecessors, (26), 24 states have call successors, (26) [2021-11-19 05:29:39,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 259 transitions. [2021-11-19 05:29:39,815 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 259 transitions. Word has length 16 [2021-11-19 05:29:39,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:29:39,815 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 259 transitions. [2021-11-19 05:29:39,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 8 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:29:39,816 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 259 transitions. [2021-11-19 05:29:39,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 05:29:39,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:29:39,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:29:39,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 05:29:40,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:29:40,021 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __list_addErr2REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-11-19 05:29:40,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:29:40,021 INFO L85 PathProgramCache]: Analyzing trace with hash -229018017, now seen corresponding path program 1 times [2021-11-19 05:29:40,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:29:40,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52279876] [2021-11-19 05:29:40,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:29:40,022 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:29:40,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:29:40,023 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:29:40,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 05:29:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:29:40,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 05:29:40,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:29:40,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:29:40,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:29:40,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:29:40,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:29:40,448 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:29:40,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52279876] [2021-11-19 05:29:40,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52279876] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:29:40,448 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:29:40,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-19 05:29:40,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043660170] [2021-11-19 05:29:40,449 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:29:40,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 05:29:40,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:29:40,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 05:29:40,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:29:40,451 INFO L87 Difference]: Start difference. First operand 214 states and 259 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:29:41,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:29:41,301 INFO L93 Difference]: Finished difference Result 234 states and 276 transitions. [2021-11-19 05:29:41,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 05:29:41,302 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-19 05:29:41,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:29:41,305 INFO L225 Difference]: With dead ends: 234 [2021-11-19 05:29:41,306 INFO L226 Difference]: Without dead ends: 234 [2021-11-19 05:29:41,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:29:41,307 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 39 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:29:41,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 647 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 05:29:41,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-19 05:29:41,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 226. [2021-11-19 05:29:41,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 130 states have (on average 1.7153846153846153) internal successors, (223), 181 states have internal predecessors, (223), 26 states have call successors, (26), 23 states have call predecessors, (26), 20 states have return successors, (27), 22 states have call predecessors, (27), 25 states have call successors, (27) [2021-11-19 05:29:41,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 276 transitions. [2021-11-19 05:29:41,322 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 276 transitions. Word has length 17 [2021-11-19 05:29:41,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:29:41,323 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 276 transitions. [2021-11-19 05:29:41,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:29:41,323 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 276 transitions. [2021-11-19 05:29:41,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 05:29:41,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:29:41,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:29:41,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 05:29:41,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:29:41,557 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __list_addErr3REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-11-19 05:29:41,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:29:41,558 INFO L85 PathProgramCache]: Analyzing trace with hash -229018016, now seen corresponding path program 1 times [2021-11-19 05:29:41,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:29:41,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330072022] [2021-11-19 05:29:41,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:29:41,559 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:29:41,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:29:41,560 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:29:41,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 05:29:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:29:41,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 05:29:41,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:29:41,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:29:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:29:41,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:29:42,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:29:42,520 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:29:42,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330072022] [2021-11-19 05:29:42,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330072022] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:29:42,521 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:29:42,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-19 05:29:42,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508242516] [2021-11-19 05:29:42,521 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:29:42,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 05:29:42,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:29:42,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 05:29:42,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:29:42,523 INFO L87 Difference]: Start difference. First operand 226 states and 276 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:29:44,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:29:44,742 INFO L93 Difference]: Finished difference Result 232 states and 272 transitions. [2021-11-19 05:29:44,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 05:29:44,744 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-19 05:29:44,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:29:44,746 INFO L225 Difference]: With dead ends: 232 [2021-11-19 05:29:44,746 INFO L226 Difference]: Without dead ends: 232 [2021-11-19 05:29:44,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:29:44,747 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 64 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:29:44,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 668 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 05:29:44,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-19 05:29:44,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 226. [2021-11-19 05:29:44,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 130 states have (on average 1.6846153846153846) internal successors, (219), 181 states have internal predecessors, (219), 26 states have call successors, (26), 23 states have call predecessors, (26), 20 states have return successors, (27), 22 states have call predecessors, (27), 25 states have call successors, (27) [2021-11-19 05:29:44,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 272 transitions. [2021-11-19 05:29:44,759 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 272 transitions. Word has length 17 [2021-11-19 05:29:44,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:29:44,759 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 272 transitions. [2021-11-19 05:29:44,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:29:44,759 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 272 transitions. [2021-11-19 05:29:44,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-19 05:29:44,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:29:44,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:29:44,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-19 05:29:44,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:29:44,972 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __list_addErr6REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-11-19 05:29:44,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:29:44,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1042979966, now seen corresponding path program 1 times [2021-11-19 05:29:44,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:29:44,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1698885346] [2021-11-19 05:29:44,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:29:44,973 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:29:44,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:29:44,974 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:29:44,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 05:29:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:29:45,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 05:29:45,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:29:45,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:29:45,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:29:45,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:29:45,253 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:29:45,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1698885346] [2021-11-19 05:29:45,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1698885346] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:29:45,253 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:29:45,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 05:29:45,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538448309] [2021-11-19 05:29:45,260 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:29:45,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:29:45,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:29:45,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:29:45,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:29:45,262 INFO L87 Difference]: Start difference. First operand 226 states and 272 transitions. Second operand has 5 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:29:45,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:29:45,703 INFO L93 Difference]: Finished difference Result 225 states and 269 transitions. [2021-11-19 05:29:45,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:29:45,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-11-19 05:29:45,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:29:45,707 INFO L225 Difference]: With dead ends: 225 [2021-11-19 05:29:45,707 INFO L226 Difference]: Without dead ends: 225 [2021-11-19 05:29:45,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:29:45,709 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 22 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:29:45,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 455 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 05:29:45,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-11-19 05:29:45,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2021-11-19 05:29:45,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 130 states have (on average 1.6615384615384616) internal successors, (216), 180 states have internal predecessors, (216), 26 states have call successors, (26), 23 states have call predecessors, (26), 20 states have return successors, (27), 22 states have call predecessors, (27), 25 states have call successors, (27) [2021-11-19 05:29:45,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 269 transitions. [2021-11-19 05:29:45,722 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 269 transitions. Word has length 19 [2021-11-19 05:29:45,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:29:45,722 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 269 transitions. [2021-11-19 05:29:45,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:29:45,723 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 269 transitions. [2021-11-19 05:29:45,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-19 05:29:45,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:29:45,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:29:45,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 05:29:45,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:29:45,948 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __list_addErr7REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-11-19 05:29:45,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:29:45,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1042979965, now seen corresponding path program 1 times [2021-11-19 05:29:45,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:29:45,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743675862] [2021-11-19 05:29:45,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:29:45,950 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:29:45,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:29:45,950 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:29:45,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 05:29:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:29:46,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 05:29:46,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:29:46,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:29:46,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:29:46,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2021-11-19 05:29:46,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:29:46,831 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:29:46,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743675862] [2021-11-19 05:29:46,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743675862] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:29:46,831 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:29:46,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-19 05:29:46,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640685177] [2021-11-19 05:29:46,832 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:29:46,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 05:29:46,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:29:46,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 05:29:46,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:29:46,833 INFO L87 Difference]: Start difference. First operand 225 states and 269 transitions. Second operand has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:29:48,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:29:48,852 INFO L93 Difference]: Finished difference Result 228 states and 266 transitions. [2021-11-19 05:29:48,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 05:29:48,853 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-11-19 05:29:48,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:29:48,855 INFO L225 Difference]: With dead ends: 228 [2021-11-19 05:29:48,856 INFO L226 Difference]: Without dead ends: 228 [2021-11-19 05:29:48,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2021-11-19 05:29:48,857 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 221 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:29:48,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 821 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 05:29:48,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-19 05:29:48,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2021-11-19 05:29:48,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 130 states have (on average 1.6384615384615384) internal successors, (213), 179 states have internal predecessors, (213), 26 states have call successors, (26), 23 states have call predecessors, (26), 20 states have return successors, (27), 22 states have call predecessors, (27), 25 states have call successors, (27) [2021-11-19 05:29:48,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 266 transitions. [2021-11-19 05:29:48,868 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 266 transitions. Word has length 19 [2021-11-19 05:29:48,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:29:48,869 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 266 transitions. [2021-11-19 05:29:48,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:29:48,869 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 266 transitions. [2021-11-19 05:29:48,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 05:29:48,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:29:48,871 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:29:48,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-19 05:29:49,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:29:49,084 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting list_emptyErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-11-19 05:29:49,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:29:49,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1130114392, now seen corresponding path program 1 times [2021-11-19 05:29:49,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:29:49,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945435620] [2021-11-19 05:29:49,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:29:49,086 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:29:49,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:29:49,087 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:29:49,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 05:29:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:29:49,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 05:29:49,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:29:49,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:29:49,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:29:49,805 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 05:29:49,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-19 05:29:49,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:29:49,829 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:29:49,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945435620] [2021-11-19 05:29:49,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945435620] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:29:49,830 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:29:49,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 7 [2021-11-19 05:29:49,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878846006] [2021-11-19 05:29:49,830 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:29:49,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 05:29:49,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:29:49,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 05:29:49,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:29:49,831 INFO L87 Difference]: Start difference. First operand 224 states and 266 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-19 05:29:50,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:29:50,101 INFO L93 Difference]: Finished difference Result 230 states and 271 transitions. [2021-11-19 05:29:50,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:29:50,102 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 34 [2021-11-19 05:29:50,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:29:50,104 INFO L225 Difference]: With dead ends: 230 [2021-11-19 05:29:50,105 INFO L226 Difference]: Without dead ends: 230 [2021-11-19 05:29:50,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:29:50,106 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 28 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:29:50,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 503 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 65 Unchecked, 0.2s Time] [2021-11-19 05:29:50,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-11-19 05:29:50,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 229. [2021-11-19 05:29:50,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 134 states have (on average 1.626865671641791) internal successors, (218), 183 states have internal predecessors, (218), 26 states have call successors, (26), 24 states have call predecessors, (26), 21 states have return successors, (27), 22 states have call predecessors, (27), 25 states have call successors, (27) [2021-11-19 05:29:50,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 271 transitions. [2021-11-19 05:29:50,123 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 271 transitions. Word has length 34 [2021-11-19 05:29:50,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:29:50,124 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 271 transitions. [2021-11-19 05:29:50,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-19 05:29:50,124 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 271 transitions. [2021-11-19 05:29:50,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 05:29:50,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:29:50,132 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:29:50,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 05:29:50,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:29:50,332 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting list_emptyErr1REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-11-19 05:29:50,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:29:50,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1130114391, now seen corresponding path program 1 times [2021-11-19 05:29:50,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:29:50,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193155321] [2021-11-19 05:29:50,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:29:50,333 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:29:50,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:29:50,334 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:29:50,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 05:29:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:29:50,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 05:29:50,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:29:50,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:29:50,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:29:51,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2021-11-19 05:29:51,880 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 05:29:51,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2021-11-19 05:29:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:29:52,110 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:29:52,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193155321] [2021-11-19 05:29:52,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193155321] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:29:52,110 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:29:52,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 8] imperfect sequences [] total 14 [2021-11-19 05:29:52,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404052522] [2021-11-19 05:29:52,111 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:29:52,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 05:29:52,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:29:52,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 05:29:52,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-19 05:29:52,113 INFO L87 Difference]: Start difference. First operand 229 states and 271 transitions. Second operand has 15 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-19 05:29:54,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:29:54,484 INFO L93 Difference]: Finished difference Result 227 states and 265 transitions. [2021-11-19 05:29:54,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 05:29:54,486 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) Word has length 34 [2021-11-19 05:29:54,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:29:54,488 INFO L225 Difference]: With dead ends: 227 [2021-11-19 05:29:54,488 INFO L226 Difference]: Without dead ends: 227 [2021-11-19 05:29:54,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-11-19 05:29:54,490 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 307 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:29:54,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 517 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 05:29:54,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-19 05:29:54,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 220. [2021-11-19 05:29:54,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 131 states have (on average 1.5877862595419847) internal successors, (208), 176 states have internal predecessors, (208), 25 states have call successors, (25), 23 states have call predecessors, (25), 20 states have return successors, (25), 21 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-19 05:29:54,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 258 transitions. [2021-11-19 05:29:54,502 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 258 transitions. Word has length 34 [2021-11-19 05:29:54,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:29:54,502 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 258 transitions. [2021-11-19 05:29:54,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-19 05:29:54,503 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 258 transitions. [2021-11-19 05:29:54,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-19 05:29:54,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:29:54,504 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:29:54,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 05:29:54,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:29:54,712 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting list_addErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-11-19 05:29:54,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:29:54,713 INFO L85 PathProgramCache]: Analyzing trace with hash -64415317, now seen corresponding path program 1 times [2021-11-19 05:29:54,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:29:54,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480064102] [2021-11-19 05:29:54,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:29:54,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:29:54,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:29:54,715 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:29:54,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 05:29:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:29:54,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 05:29:54,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:29:54,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:29:55,239 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-19 05:29:55,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2021-11-19 05:29:55,339 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:29:55,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:29:55,762 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:29:55,762 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:29:55,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480064102] [2021-11-19 05:29:55,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480064102] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:29:55,763 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:29:55,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 8 [2021-11-19 05:29:55,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501830783] [2021-11-19 05:29:55,763 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:29:55,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:29:55,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:29:55,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:29:55,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:29:55,765 INFO L87 Difference]: Start difference. First operand 220 states and 258 transitions. Second operand has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 9 states have internal predecessors, (34), 5 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-19 05:29:56,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:29:56,405 INFO L93 Difference]: Finished difference Result 224 states and 261 transitions. [2021-11-19 05:29:56,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:29:56,406 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 9 states have internal predecessors, (34), 5 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 35 [2021-11-19 05:29:56,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:29:56,408 INFO L225 Difference]: With dead ends: 224 [2021-11-19 05:29:56,408 INFO L226 Difference]: Without dead ends: 224 [2021-11-19 05:29:56,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 8 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:29:56,410 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 161 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:29:56,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 249 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 235 Invalid, 0 Unknown, 8 Unchecked, 0.6s Time] [2021-11-19 05:29:56,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-11-19 05:29:56,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 186. [2021-11-19 05:29:56,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 106 states have (on average 1.4811320754716981) internal successors, (157), 149 states have internal predecessors, (157), 21 states have call successors, (21), 20 states have call predecessors, (21), 17 states have return successors, (21), 17 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-19 05:29:56,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 199 transitions. [2021-11-19 05:29:56,428 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 199 transitions. Word has length 35 [2021-11-19 05:29:56,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:29:56,429 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 199 transitions. [2021-11-19 05:29:56,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 9 states have internal predecessors, (34), 5 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-19 05:29:56,429 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 199 transitions. [2021-11-19 05:29:56,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-19 05:29:56,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:29:56,432 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:29:56,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 05:29:56,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:29:56,649 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting list_addErr1REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-11-19 05:29:56,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:29:56,649 INFO L85 PathProgramCache]: Analyzing trace with hash -64415316, now seen corresponding path program 1 times [2021-11-19 05:29:56,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:29:56,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531675426] [2021-11-19 05:29:56,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:29:56,650 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:29:56,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:29:56,651 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:29:56,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 05:29:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:29:56,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 05:29:56,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:29:57,571 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 05:29:57,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2021-11-19 05:29:57,585 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:29:57,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 32 [2021-11-19 05:29:57,880 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:29:57,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:30:03,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 55 treesize of output 51 [2021-11-19 05:30:03,219 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 05:30:03,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 50 [2021-11-19 05:30:05,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 47 treesize of output 43 [2021-11-19 05:30:06,979 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 05:30:06,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 42 [2021-11-19 05:30:09,078 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 05:30:09,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 77 [2021-11-19 05:30:45,896 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 05:30:45,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2021-11-19 05:30:46,141 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:46,141 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:30:46,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531675426] [2021-11-19 05:30:46,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531675426] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:30:46,142 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:30:46,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-11-19 05:30:46,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428599688] [2021-11-19 05:30:46,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:30:46,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-19 05:30:46,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:30:46,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-19 05:30:46,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=465, Unknown=1, NotChecked=0, Total=552 [2021-11-19 05:30:46,144 INFO L87 Difference]: Start difference. First operand 186 states and 199 transitions. Second operand has 24 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 9 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-19 05:30:57,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:57,442 INFO L93 Difference]: Finished difference Result 247 states and 265 transitions. [2021-11-19 05:30:57,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-19 05:30:57,444 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 9 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) Word has length 35 [2021-11-19 05:30:57,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:57,446 INFO L225 Difference]: With dead ends: 247 [2021-11-19 05:30:57,446 INFO L226 Difference]: Without dead ends: 247 [2021-11-19 05:30:57,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=238, Invalid=1021, Unknown=1, NotChecked=0, Total=1260 [2021-11-19 05:30:57,448 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 240 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 1699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1014 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:57,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 1337 Invalid, 1699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 665 Invalid, 0 Unknown, 1014 Unchecked, 2.8s Time] [2021-11-19 05:30:57,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-19 05:30:57,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 186. [2021-11-19 05:30:57,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 106 states have (on average 1.471698113207547) internal successors, (156), 149 states have internal predecessors, (156), 21 states have call successors, (21), 20 states have call predecessors, (21), 17 states have return successors, (21), 17 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-19 05:30:57,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 198 transitions. [2021-11-19 05:30:57,458 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 198 transitions. Word has length 35 [2021-11-19 05:30:57,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:57,459 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 198 transitions. [2021-11-19 05:30:57,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 9 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-19 05:30:57,459 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 198 transitions. [2021-11-19 05:30:57,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 05:30:57,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:57,460 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:30:57,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 05:30:57,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:30:57,676 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __list_addErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-11-19 05:30:57,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:57,677 INFO L85 PathProgramCache]: Analyzing trace with hash 853907176, now seen corresponding path program 1 times [2021-11-19 05:30:57,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:30:57,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980492197] [2021-11-19 05:30:57,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:57,678 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:30:57,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:30:57,680 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:30:57,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 05:30:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:58,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-19 05:30:58,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:30:58,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:30:58,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 05:30:58,702 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-11-19 05:30:58,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 41 treesize of output 62 [2021-11-19 05:30:58,945 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-19 05:30:58,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 85 treesize of output 36 [2021-11-19 05:30:59,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 72 [2021-11-19 05:31:00,080 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:31:00,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:31:13,118 WARN L838 $PredicateComparison]: unable to prove that (forall ((gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_gl_insert_~node~0.base_38 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_gl_insert_~node~0.base_38)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_gl_insert_~node~0.base_38 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_38 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_38) gl_insert_~node~0.offset v_DerPreprocessor_13) (bvadd gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_14) (bvadd (_ bv2 32) gl_insert_~node~0.offset) v_DerPreprocessor_15) (bvadd (_ bv3 32) gl_insert_~node~0.offset) v_DerPreprocessor_16)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))))))))) is different from false [2021-11-19 05:31:17,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41049 treesize of output 40921 [2021-11-19 05:31:18,004 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:31:18,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980492197] [2021-11-19 05:31:18,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 05:31:18,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [357936262] [2021-11-19 05:31:18,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:31:18,006 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 05:31:18,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/cvc4 [2021-11-19 05:31:18,014 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 05:31:18,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-19 05:31:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:31:18,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-19 05:31:18,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:31:18,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-19 05:31:18,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:31:19,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 05:31:20,352 INFO L354 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2021-11-19 05:31:20,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 36 [2021-11-19 05:31:20,694 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-19 05:31:20,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 85 treesize of output 36 [2021-11-19 05:31:21,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34 [2021-11-19 05:31:23,348 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:31:23,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:31:39,806 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 05:31:39,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 13256 treesize of output 12854 [2021-11-19 05:31:40,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 05:31:40,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733251038] [2021-11-19 05:31:40,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:31:40,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:31:40,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:31:40,626 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:31:40,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-19 05:31:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:31:40,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-19 05:31:40,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:31:40,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:31:40,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 05:31:41,251 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-11-19 05:31:41,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 60 [2021-11-19 05:31:41,575 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-19 05:31:41,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 84 treesize of output 35 [2021-11-19 05:31:41,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 72 [2021-11-19 05:31:42,183 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:31:42,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:31:44,353 WARN L838 $PredicateComparison]: unable to prove that (forall ((gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| c_gl_insert_~node~0.base (store (store (store (store (select |c_#memory_$Pointer$.base| c_gl_insert_~node~0.base) gl_insert_~node~0.offset v_DerPreprocessor_21) (bvadd gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_22) (bvadd (_ bv2 32) gl_insert_~node~0.offset) v_DerPreprocessor_23) (bvadd (_ bv3 32) gl_insert_~node~0.offset) v_DerPreprocessor_24)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))))) (_ bv1 1)))) is different from false [2021-11-19 05:31:46,429 WARN L838 $PredicateComparison]: unable to prove that (forall ((gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (v_gl_insert_~node~0.base_49 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_gl_insert_~node~0.base_49)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_gl_insert_~node~0.base_49 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_49 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_49) gl_insert_~node~0.offset v_DerPreprocessor_21) (bvadd gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_22) (bvadd (_ bv2 32) gl_insert_~node~0.offset) v_DerPreprocessor_23) (bvadd (_ bv3 32) gl_insert_~node~0.offset) v_DerPreprocessor_24)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))))) (_ bv1 1))))) is different from false [2021-11-19 05:31:50,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10061 treesize of output 10029 [2021-11-19 05:31:50,405 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 05:31:50,405 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:31:50,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-19 05:31:50,405 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-11-19 05:31:50,406 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-19 05:31:50,413 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr0REQUIRES_VIOLATION (63 of 64 remaining) [2021-11-19 05:31:50,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_emptyErr0REQUIRES_VIOLATION (62 of 64 remaining) [2021-11-19 05:31:50,416 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_emptyErr1REQUIRES_VIOLATION (61 of 64 remaining) [2021-11-19 05:31:50,416 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr0REQUIRES_VIOLATION (60 of 64 remaining) [2021-11-19 05:31:50,416 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr1REQUIRES_VIOLATION (59 of 64 remaining) [2021-11-19 05:31:50,417 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr2REQUIRES_VIOLATION (58 of 64 remaining) [2021-11-19 05:31:50,417 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr3REQUIRES_VIOLATION (57 of 64 remaining) [2021-11-19 05:31:50,417 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_insertErr0REQUIRES_VIOLATION (56 of 64 remaining) [2021-11-19 05:31:50,417 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_insertErr1REQUIRES_VIOLATION (55 of 64 remaining) [2021-11-19 05:31:50,418 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr0REQUIRES_VIOLATION (54 of 64 remaining) [2021-11-19 05:31:50,418 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr1REQUIRES_VIOLATION (53 of 64 remaining) [2021-11-19 05:31:50,418 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr2REQUIRES_VIOLATION (52 of 64 remaining) [2021-11-19 05:31:50,418 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr3REQUIRES_VIOLATION (51 of 64 remaining) [2021-11-19 05:31:50,419 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr4REQUIRES_VIOLATION (50 of 64 remaining) [2021-11-19 05:31:50,419 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr5REQUIRES_VIOLATION (49 of 64 remaining) [2021-11-19 05:31:50,419 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr6ASSERT_VIOLATIONMEMORY_FREE (48 of 64 remaining) [2021-11-19 05:31:50,419 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr7ASSERT_VIOLATIONMEMORY_FREE (47 of 64 remaining) [2021-11-19 05:31:50,420 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr8ASSERT_VIOLATIONMEMORY_FREE (46 of 64 remaining) [2021-11-19 05:31:50,420 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr1REQUIRES_VIOLATION (45 of 64 remaining) [2021-11-19 05:31:50,420 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr2REQUIRES_VIOLATION (44 of 64 remaining) [2021-11-19 05:31:50,420 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr3REQUIRES_VIOLATION (43 of 64 remaining) [2021-11-19 05:31:50,421 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr4REQUIRES_VIOLATION (42 of 64 remaining) [2021-11-19 05:31:50,421 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr5REQUIRES_VIOLATION (41 of 64 remaining) [2021-11-19 05:31:50,421 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr6REQUIRES_VIOLATION (40 of 64 remaining) [2021-11-19 05:31:50,421 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr7REQUIRES_VIOLATION (39 of 64 remaining) [2021-11-19 05:31:50,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK (38 of 64 remaining) [2021-11-19 05:31:50,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr0REQUIRES_VIOLATION (37 of 64 remaining) [2021-11-19 05:31:50,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr1REQUIRES_VIOLATION (36 of 64 remaining) [2021-11-19 05:31:50,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr0REQUIRES_VIOLATION (35 of 64 remaining) [2021-11-19 05:31:50,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr1REQUIRES_VIOLATION (34 of 64 remaining) [2021-11-19 05:31:50,423 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr2REQUIRES_VIOLATION (33 of 64 remaining) [2021-11-19 05:31:50,423 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr3REQUIRES_VIOLATION (32 of 64 remaining) [2021-11-19 05:31:50,423 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr4REQUIRES_VIOLATION (31 of 64 remaining) [2021-11-19 05:31:50,423 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr5REQUIRES_VIOLATION (30 of 64 remaining) [2021-11-19 05:31:50,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr6REQUIRES_VIOLATION (29 of 64 remaining) [2021-11-19 05:31:50,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr7REQUIRES_VIOLATION (28 of 64 remaining) [2021-11-19 05:31:50,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_moveErr0REQUIRES_VIOLATION (27 of 64 remaining) [2021-11-19 05:31:50,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_moveErr1REQUIRES_VIOLATION (26 of 64 remaining) [2021-11-19 05:31:50,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_moveErr2REQUIRES_VIOLATION (25 of 64 remaining) [2021-11-19 05:31:50,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_moveErr3REQUIRES_VIOLATION (24 of 64 remaining) [2021-11-19 05:31:50,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location val_from_nodeErr0REQUIRES_VIOLATION (23 of 64 remaining) [2021-11-19 05:31:50,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location val_from_nodeErr1REQUIRES_VIOLATION (22 of 64 remaining) [2021-11-19 05:31:50,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr0REQUIRES_VIOLATION (21 of 64 remaining) [2021-11-19 05:31:50,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr1REQUIRES_VIOLATION (20 of 64 remaining) [2021-11-19 05:31:50,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr2REQUIRES_VIOLATION (19 of 64 remaining) [2021-11-19 05:31:50,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr3REQUIRES_VIOLATION (18 of 64 remaining) [2021-11-19 05:31:50,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr4REQUIRES_VIOLATION (17 of 64 remaining) [2021-11-19 05:31:50,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr5REQUIRES_VIOLATION (16 of 64 remaining) [2021-11-19 05:31:50,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr6REQUIRES_VIOLATION (15 of 64 remaining) [2021-11-19 05:31:50,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr7REQUIRES_VIOLATION (14 of 64 remaining) [2021-11-19 05:31:50,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr8REQUIRES_VIOLATION (13 of 64 remaining) [2021-11-19 05:31:50,428 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr9REQUIRES_VIOLATION (12 of 64 remaining) [2021-11-19 05:31:50,428 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr10REQUIRES_VIOLATION (11 of 64 remaining) [2021-11-19 05:31:50,428 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr11REQUIRES_VIOLATION (10 of 64 remaining) [2021-11-19 05:31:50,428 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr12REQUIRES_VIOLATION (9 of 64 remaining) [2021-11-19 05:31:50,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr13REQUIRES_VIOLATION (8 of 64 remaining) [2021-11-19 05:31:50,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr14REQUIRES_VIOLATION (7 of 64 remaining) [2021-11-19 05:31:50,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr15REQUIRES_VIOLATION (6 of 64 remaining) [2021-11-19 05:31:50,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_seek_maxErr0REQUIRES_VIOLATION (5 of 64 remaining) [2021-11-19 05:31:50,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_seek_maxErr1REQUIRES_VIOLATION (4 of 64 remaining) [2021-11-19 05:31:50,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_seek_maxErr2REQUIRES_VIOLATION (3 of 64 remaining) [2021-11-19 05:31:50,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_seek_maxErr3REQUIRES_VIOLATION (2 of 64 remaining) [2021-11-19 05:31:50,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_seek_maxErr4REQUIRES_VIOLATION (1 of 64 remaining) [2021-11-19 05:31:50,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_seek_maxErr5REQUIRES_VIOLATION (0 of 64 remaining) [2021-11-19 05:31:50,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-11-19 05:31:50,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 05:31:50,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-19 05:31:51,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:31:51,034 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:31:51,039 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 05:31:51,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:31:51 BoogieIcfgContainer [2021-11-19 05:31:51,053 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 05:31:51,054 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 05:31:51,054 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 05:31:51,054 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 05:31:51,055 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:28:08" (3/4) ... [2021-11-19 05:31:51,059 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 05:31:51,059 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 05:31:51,060 INFO L158 Benchmark]: Toolchain (without parser) took 224896.41ms. Allocated memory was 69.2MB in the beginning and 136.3MB in the end (delta: 67.1MB). Free memory was 48.3MB in the beginning and 59.7MB in the end (delta: -11.4MB). Peak memory consumption was 57.4MB. Max. memory is 16.1GB. [2021-11-19 05:31:51,060 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 54.5MB. Free memory is still 35.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:31:51,061 INFO L158 Benchmark]: CACSL2BoogieTranslator took 570.30ms. Allocated memory is still 69.2MB. Free memory was 48.1MB in the beginning and 40.1MB in the end (delta: 8.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 05:31:51,061 INFO L158 Benchmark]: Boogie Preprocessor took 99.71ms. Allocated memory is still 69.2MB. Free memory was 40.1MB in the beginning and 36.4MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-19 05:31:51,062 INFO L158 Benchmark]: RCFGBuilder took 1237.13ms. Allocated memory is still 69.2MB. Free memory was 36.2MB in the beginning and 46.7MB in the end (delta: -10.6MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2021-11-19 05:31:51,062 INFO L158 Benchmark]: TraceAbstraction took 222975.77ms. Allocated memory was 69.2MB in the beginning and 136.3MB in the end (delta: 67.1MB). Free memory was 46.4MB in the beginning and 59.7MB in the end (delta: -13.3MB). Peak memory consumption was 76.4MB. Max. memory is 16.1GB. [2021-11-19 05:31:51,062 INFO L158 Benchmark]: Witness Printer took 5.22ms. Allocated memory is still 136.3MB. Free memory is still 59.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:31:51,064 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 54.5MB. Free memory is still 35.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 570.30ms. Allocated memory is still 69.2MB. Free memory was 48.1MB in the beginning and 40.1MB in the end (delta: 8.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 99.71ms. Allocated memory is still 69.2MB. Free memory was 40.1MB in the beginning and 36.4MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1237.13ms. Allocated memory is still 69.2MB. Free memory was 36.2MB in the beginning and 46.7MB in the end (delta: -10.6MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. * TraceAbstraction took 222975.77ms. Allocated memory was 69.2MB in the beginning and 136.3MB in the end (delta: 67.1MB). Free memory was 46.4MB in the beginning and 59.7MB in the end (delta: -13.3MB). Peak memory consumption was 76.4MB. Max. memory is 16.1GB. * Witness Printer took 5.22ms. Allocated memory is still 136.3MB. Free memory is still 59.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 535]: 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: [L564] struct list_head gl_list = { &(gl_list), &(gl_list) }; [L625] CALL gl_read() [L576] CALL gl_insert(__VERIFIER_nondet_int()) [L567] struct node *node = malloc(sizeof *node); [L568] COND FALSE !(!node) [L570] node->value = value [L571] CALL list_add(&node->linkage, &gl_list) [L547] EXPR head->next [L547] CALL __list_add(new, head, head->next) [L535] next->prev = new [L536] new->next = next [L537] new->prev = prev [L538] prev->next = new [L547] RET __list_add(new, head, head->next) [L571] RET list_add(&node->linkage, &gl_list) [L576] RET gl_insert(__VERIFIER_nondet_int()) [L578] COND TRUE __VERIFIER_nondet_int() [L576] CALL gl_insert(__VERIFIER_nondet_int()) [L567] struct node *node = malloc(sizeof *node); [L568] COND FALSE !(!node) [L570] node->value = value [L571] CALL list_add(&node->linkage, &gl_list) [L547] EXPR head->next [L547] CALL __list_add(new, head, head->next) [L535] next->prev = new - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 583]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 583]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 590]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 590]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 620]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 620]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 620]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 620]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 599]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 599]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 22 procedures, 206 locations, 64 error locations. Started 1 CEGAR loops. OverallTime: 222.9s, OverallIterations: 16, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 33.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1376 SdHoareTripleChecker+Valid, 17.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1361 mSDsluCounter, 9994 SdHoareTripleChecker+Invalid, 14.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2278 IncrementalHoareTripleChecker+Unchecked, 7698 mSDsCounter, 138 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4242 IncrementalHoareTripleChecker+Invalid, 6658 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 138 mSolverCounterUnsat, 2296 mSDtfsCounter, 4242 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 639 GetRequests, 425 SyntacticMatches, 42 SemanticMatches, 172 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 97.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=229occurred in iteration=12, InterpolantAutomatonStates: 124, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 15 MinimizatonAttempts, 182 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 149.6s InterpolantComputationTime, 336 NumberOfCodeBlocks, 336 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 603 ConstructedInterpolants, 108 QuantifiedInterpolants, 7655 SizeOfPredicates, 157 NumberOfNonLiveVariables, 2272 ConjunctsInSsa, 233 ConjunctsInUnsatCore, 31 InterpolantComputations, 26 PerfectInterpolantSequences, 28/38 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-19 05:31:51,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b9ea245-5e91-4a56-99b0-c889405d10bd/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN