./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0102-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0102-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF --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 d10910cb8c44ec8f982d35122d9e66670129ee7c874265953b685f7f63a30072 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:17:18,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:17:18,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:17:18,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:17:18,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:17:18,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:17:18,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:17:18,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:17:18,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:17:18,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:17:18,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:17:18,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:17:18,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:17:18,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:17:18,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:17:18,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:17:18,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:17:18,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:17:18,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:17:18,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:17:18,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:17:18,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:17:18,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:17:18,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:17:18,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:17:18,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:17:18,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:17:18,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:17:18,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:17:18,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:17:18,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:17:18,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:17:18,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:17:18,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:17:18,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:17:18,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:17:18,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:17:18,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:17:18,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:17:18,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:17:18,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:17:18,534 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 07:17:18,578 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:17:18,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:17:18,580 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:17:18,580 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:17:18,588 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:17:18,588 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:17:18,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:17:18,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:17:18,589 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:17:18,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:17:18,591 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:17:18,591 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:17:18,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:17:18,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:17:18,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:17:18,592 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 07:17:18,592 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 07:17:18,592 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 07:17:18,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:17:18,593 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 07:17:18,593 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:17:18,593 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:17:18,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:17:18,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:17:18,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:17:18,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:17:18,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:17:18,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:17:18,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:17:18,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:17:18,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:17:18,597 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_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d10910cb8c44ec8f982d35122d9e66670129ee7c874265953b685f7f63a30072 [2021-11-20 07:17:18,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:17:18,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:17:18,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:17:18,908 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:17:18,909 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:17:18,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/memsafety/test-0102-2.i [2021-11-20 07:17:18,995 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/data/01d52b46f/30212ff701084e0584f2d0105aba3971/FLAGb304f1a68 [2021-11-20 07:17:19,601 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:17:19,602 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/sv-benchmarks/c/memsafety/test-0102-2.i [2021-11-20 07:17:19,622 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/data/01d52b46f/30212ff701084e0584f2d0105aba3971/FLAGb304f1a68 [2021-11-20 07:17:19,867 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/data/01d52b46f/30212ff701084e0584f2d0105aba3971 [2021-11-20 07:17:19,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:17:19,871 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:17:19,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:17:19,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:17:19,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:17:19,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:17:19" (1/1) ... [2021-11-20 07:17:19,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b27eefc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:19, skipping insertion in model container [2021-11-20 07:17:19,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:17:19" (1/1) ... [2021-11-20 07:17:19,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:17:19,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:17:20,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:17:20,259 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) [2021-11-20 07:17:20,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@423c888b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:20, skipping insertion in model container [2021-11-20 07:17:20,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:17:20,261 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 07:17:20,262 INFO L158 Benchmark]: Toolchain (without parser) took 389.94ms. Allocated memory is still 119.5MB. Free memory was 79.9MB in the beginning and 89.3MB in the end (delta: -9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:17:20,263 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 119.5MB. Free memory is still 97.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:17:20,264 INFO L158 Benchmark]: CACSL2BoogieTranslator took 387.68ms. Allocated memory is still 119.5MB. Free memory was 79.8MB in the beginning and 89.3MB in the end (delta: -9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:17:20,265 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 119.5MB. Free memory is still 97.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 387.68ms. Allocated memory is still 119.5MB. Free memory was 79.8MB in the beginning and 89.3MB in the end (delta: -9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 551]: 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_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0102-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF --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 d10910cb8c44ec8f982d35122d9e66670129ee7c874265953b685f7f63a30072 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:17:22,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:17:22,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:17:22,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:17:22,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:17:22,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:17:22,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:17:22,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:17:22,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:17:22,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:17:22,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:17:22,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:17:22,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:17:22,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:17:22,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:17:22,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:17:22,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:17:22,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:17:22,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:17:22,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:17:22,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:17:22,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:17:22,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:17:22,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:17:22,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:17:22,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:17:22,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:17:22,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:17:22,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:17:22,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:17:22,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:17:22,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:17:22,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:17:22,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:17:22,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:17:22,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:17:22,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:17:22,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:17:22,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:17:22,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:17:22,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:17:22,766 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 07:17:22,810 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:17:22,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:17:22,812 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:17:22,812 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:17:22,813 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:17:22,813 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:17:22,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:17:22,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:17:22,816 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:17:22,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:17:22,817 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:17:22,818 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:17:22,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:17:22,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:17:22,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:17:22,819 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 07:17:22,819 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 07:17:22,819 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 07:17:22,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:17:22,820 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 07:17:22,820 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 07:17:22,820 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 07:17:22,820 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:17:22,820 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:17:22,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:17:22,821 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:17:22,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:17:22,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:17:22,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:17:22,822 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:17:22,823 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 07:17:22,823 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 07:17:22,823 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:17:22,823 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 07:17:22,824 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_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d10910cb8c44ec8f982d35122d9e66670129ee7c874265953b685f7f63a30072 [2021-11-20 07:17:23,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:17:23,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:17:23,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:17:23,301 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:17:23,301 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:17:23,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/memsafety/test-0102-2.i [2021-11-20 07:17:23,374 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/data/21ab4a743/32662be61ca042ed978885c1fac81ba2/FLAGa01c36f1c [2021-11-20 07:17:23,944 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:17:23,945 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/sv-benchmarks/c/memsafety/test-0102-2.i [2021-11-20 07:17:23,959 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/data/21ab4a743/32662be61ca042ed978885c1fac81ba2/FLAGa01c36f1c [2021-11-20 07:17:24,239 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/data/21ab4a743/32662be61ca042ed978885c1fac81ba2 [2021-11-20 07:17:24,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:17:24,243 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:17:24,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:17:24,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:17:24,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:17:24,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:17:24" (1/1) ... [2021-11-20 07:17:24,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@435c20cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:24, skipping insertion in model container [2021-11-20 07:17:24,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:17:24" (1/1) ... [2021-11-20 07:17:24,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:17:24,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:17:24,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:17:24,685 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 07:17:24,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:17:24,765 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:17:24,782 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:17:24,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:17:24,888 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:17:24,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:24 WrapperNode [2021-11-20 07:17:24,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:17:24,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:17:24,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:17:24,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:17:24,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:24" (1/1) ... [2021-11-20 07:17:24,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:24" (1/1) ... [2021-11-20 07:17:24,949 INFO L137 Inliner]: procedures = 136, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 101 [2021-11-20 07:17:24,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:17:24,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:17:24,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:17:24,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:17:24,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:24" (1/1) ... [2021-11-20 07:17:24,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:24" (1/1) ... [2021-11-20 07:17:24,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:24" (1/1) ... [2021-11-20 07:17:24,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:24" (1/1) ... [2021-11-20 07:17:24,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:24" (1/1) ... [2021-11-20 07:17:24,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:24" (1/1) ... [2021-11-20 07:17:24,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:24" (1/1) ... [2021-11-20 07:17:24,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:17:24,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:17:24,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:17:24,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:17:25,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:24" (1/1) ... [2021-11-20 07:17:25,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:17:25,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:17:25,053 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:17:25,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:17:25,110 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-20 07:17:25,111 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-20 07:17:25,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 07:17:25,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:17:25,111 INFO L130 BoogieDeclarations]: Found specification of procedure create_sub_list [2021-11-20 07:17:25,111 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sub_list [2021-11-20 07:17:25,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:17:25,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 07:17:25,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 07:17:25,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 07:17:25,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:17:25,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 07:17:25,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 07:17:25,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:17:25,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:17:25,228 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:17:25,229 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:17:25,631 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:17:25,639 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:17:25,639 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-20 07:17:25,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:17:25 BoogieIcfgContainer [2021-11-20 07:17:25,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:17:25,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:17:25,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:17:25,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:17:25,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:17:24" (1/3) ... [2021-11-20 07:17:25,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e8498c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:17:25, skipping insertion in model container [2021-11-20 07:17:25,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:24" (2/3) ... [2021-11-20 07:17:25,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e8498c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:17:25, skipping insertion in model container [2021-11-20 07:17:25,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:17:25" (3/3) ... [2021-11-20 07:17:25,651 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0102-2.i [2021-11-20 07:17:25,657 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:17:25,657 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2021-11-20 07:17:25,704 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:17:25,712 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 [2021-11-20 07:17:25,712 INFO L340 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2021-11-20 07:17:25,728 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 45 states have (on average 1.9111111111111112) internal successors, (86), 76 states have internal predecessors, (86), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 07:17:25,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 07:17:25,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:17:25,755 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 07:17:25,756 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:17:25,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:17:25,761 INFO L85 PathProgramCache]: Analyzing trace with hash 60205689, now seen corresponding path program 1 times [2021-11-20 07:17:25,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:17:25,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954825] [2021-11-20 07:17:25,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:25,775 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:17:25,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:17:25,781 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:17:25,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 07:17:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:25,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 07:17:25,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:17:25,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:25,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:17:25,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:25,965 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:17:25,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954825] [2021-11-20 07:17:25,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954825] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:17:25,966 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:17:25,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 07:17:25,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483028744] [2021-11-20 07:17:25,969 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:17:25,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 07:17:25,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:17:26,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 07:17:26,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:17:26,021 INFO L87 Difference]: Start difference. First operand has 83 states, 45 states have (on average 1.9111111111111112) internal successors, (86), 76 states have internal predecessors, (86), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:17:26,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:17:26,054 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2021-11-20 07:17:26,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:17:26,056 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-20 07:17:26,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:17:26,065 INFO L225 Difference]: With dead ends: 83 [2021-11-20 07:17:26,066 INFO L226 Difference]: Without dead ends: 81 [2021-11-20 07:17:26,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:17:26,074 INFO L933 BasicCegarLoop]: 88 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, 88 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 [2021-11-20 07:17:26,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:17:26,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-20 07:17:26,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-11-20 07:17:26,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 44 states have (on average 1.7727272727272727) internal successors, (78), 74 states have internal predecessors, (78), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 07:17:26,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2021-11-20 07:17:26,128 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 5 [2021-11-20 07:17:26,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:17:26,128 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2021-11-20 07:17:26,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:17:26,129 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2021-11-20 07:17:26,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 07:17:26,129 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:17:26,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:17:26,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:17:26,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:17:26,330 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting create_sub_listErr0REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:17:26,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:17:26,332 INFO L85 PathProgramCache]: Analyzing trace with hash 2005144647, now seen corresponding path program 1 times [2021-11-20 07:17:26,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:17:26,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608408344] [2021-11-20 07:17:26,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:26,333 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:17:26,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:17:26,334 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:17:26,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 07:17:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:26,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:17:26,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:17:26,519 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 [2021-11-20 07:17:26,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:26,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:17:26,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:26,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:17:26,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608408344] [2021-11-20 07:17:26,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608408344] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:17:26,676 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:17:26,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 07:17:26,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497700984] [2021-11-20 07:17:26,677 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:17:26,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:17:26,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:17:26,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:17:26,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:17:26,679 INFO L87 Difference]: Start difference. First operand 81 states and 86 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:17:27,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:17:27,111 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2021-11-20 07:17:27,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:17:27,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-20 07:17:27,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:17:27,113 INFO L225 Difference]: With dead ends: 108 [2021-11-20 07:17:27,113 INFO L226 Difference]: Without dead ends: 108 [2021-11-20 07:17:27,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:17:27,115 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 60 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:17:27,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 162 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 07:17:27,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-20 07:17:27,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 79. [2021-11-20 07:17:27,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 44 states have (on average 1.7272727272727273) internal successors, (76), 72 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 07:17:27,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2021-11-20 07:17:27,128 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 7 [2021-11-20 07:17:27,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:17:27,128 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2021-11-20 07:17:27,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:17:27,129 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2021-11-20 07:17:27,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 07:17:27,129 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:17:27,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:17:27,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:17:27,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:17:27,347 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting create_sub_listErr1REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:17:27,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:17:27,347 INFO L85 PathProgramCache]: Analyzing trace with hash 2005144648, now seen corresponding path program 1 times [2021-11-20 07:17:27,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:17:27,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515402497] [2021-11-20 07:17:27,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:27,350 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:17:27,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:17:27,351 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:17:27,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 07:17:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:27,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 07:17:27,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:17:27,432 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 [2021-11-20 07:17:27,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:27,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:17:27,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:27,749 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:17:27,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515402497] [2021-11-20 07:17:27,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515402497] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:17:27,750 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:17:27,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-20 07:17:27,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908217303] [2021-11-20 07:17:27,751 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:17:27,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:17:27,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:17:27,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:17:27,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:17:27,753 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:17:28,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:17:28,388 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2021-11-20 07:17:28,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:17:28,390 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-20 07:17:28,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:17:28,391 INFO L225 Difference]: With dead ends: 84 [2021-11-20 07:17:28,391 INFO L226 Difference]: Without dead ends: 84 [2021-11-20 07:17:28,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:17:28,393 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 10 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:17:28,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 288 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 07:17:28,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-20 07:17:28,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2021-11-20 07:17:28,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 47 states have (on average 1.6808510638297873) internal successors, (79), 74 states have internal predecessors, (79), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 07:17:28,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2021-11-20 07:17:28,410 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 7 [2021-11-20 07:17:28,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:17:28,411 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2021-11-20 07:17:28,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:17:28,411 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2021-11-20 07:17:28,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 07:17:28,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:17:28,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:17:28,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:17:28,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:17:28,627 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting create_sub_listErr4REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:17:28,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:17:28,628 INFO L85 PathProgramCache]: Analyzing trace with hash 859208239, now seen corresponding path program 1 times [2021-11-20 07:17:28,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:17:28,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046410369] [2021-11-20 07:17:28,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:28,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:17:28,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:17:28,630 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:17:28,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 07:17:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:28,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:17:28,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:17:28,732 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 [2021-11-20 07:17:28,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:28,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:17:28,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:28,795 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:17:28,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046410369] [2021-11-20 07:17:28,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046410369] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:17:28,801 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:17:28,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 07:17:28,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303882675] [2021-11-20 07:17:28,802 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:17:28,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:17:28,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:17:28,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:17:28,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:17:28,805 INFO L87 Difference]: Start difference. First operand 82 states and 87 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:17:28,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:17:28,916 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2021-11-20 07:17:28,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:17:28,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 07:17:28,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:17:28,918 INFO L225 Difference]: With dead ends: 82 [2021-11-20 07:17:28,919 INFO L226 Difference]: Without dead ends: 82 [2021-11-20 07:17:28,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:17:28,920 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 6 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:17:28,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 122 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:17:28,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-20 07:17:28,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2021-11-20 07:17:28,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 47 states have (on average 1.6595744680851063) internal successors, (78), 73 states have internal predecessors, (78), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 07:17:28,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2021-11-20 07:17:28,930 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 11 [2021-11-20 07:17:28,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:17:28,931 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2021-11-20 07:17:28,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:17:28,931 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2021-11-20 07:17:28,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 07:17:28,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:17:28,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:17:28,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:17:29,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:17:29,143 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting create_sub_listErr5REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:17:29,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:17:29,144 INFO L85 PathProgramCache]: Analyzing trace with hash 859208240, now seen corresponding path program 1 times [2021-11-20 07:17:29,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:17:29,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997142042] [2021-11-20 07:17:29,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:29,145 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:17:29,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:17:29,149 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:17:29,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 07:17:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:29,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:17:29,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:17:29,302 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 [2021-11-20 07:17:29,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:29,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:17:29,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:29,422 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:17:29,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997142042] [2021-11-20 07:17:29,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997142042] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:17:29,423 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:17:29,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 07:17:29,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999489214] [2021-11-20 07:17:29,424 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:17:29,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:17:29,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:17:29,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:17:29,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:17:29,425 INFO L87 Difference]: Start difference. First operand 81 states and 86 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:17:29,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:17:29,670 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2021-11-20 07:17:29,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:17:29,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 07:17:29,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:17:29,672 INFO L225 Difference]: With dead ends: 81 [2021-11-20 07:17:29,672 INFO L226 Difference]: Without dead ends: 81 [2021-11-20 07:17:29,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:17:29,674 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 10 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:17:29,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 126 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:17:29,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-20 07:17:29,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2021-11-20 07:17:29,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 47 states have (on average 1.6382978723404256) internal successors, (77), 72 states have internal predecessors, (77), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 07:17:29,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2021-11-20 07:17:29,683 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 11 [2021-11-20 07:17:29,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:17:29,684 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2021-11-20 07:17:29,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:17:29,684 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2021-11-20 07:17:29,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 07:17:29,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:17:29,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:17:29,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 07:17:29,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:17:29,891 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting list_add_tailErr0REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:17:29,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:17:29,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1332328513, now seen corresponding path program 1 times [2021-11-20 07:17:29,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:17:29,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92632539] [2021-11-20 07:17:29,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:29,892 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:17:29,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:17:29,893 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:17:29,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 07:17:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:30,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 07:17:30,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:17:30,018 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 [2021-11-20 07:17:30,104 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 07:17:30,105 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 20 treesize of output 25 [2021-11-20 07:17:30,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:30,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:17:30,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:30,457 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:17:30,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92632539] [2021-11-20 07:17:30,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92632539] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:17:30,458 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:17:30,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-11-20 07:17:30,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20246228] [2021-11-20 07:17:30,458 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:17:30,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:17:30,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:17:30,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:17:30,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:17:30,459 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:17:30,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:17:30,837 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions. [2021-11-20 07:17:30,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 07:17:30,837 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-20 07:17:30,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:17:30,840 INFO L225 Difference]: With dead ends: 89 [2021-11-20 07:17:30,840 INFO L226 Difference]: Without dead ends: 89 [2021-11-20 07:17:30,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-11-20 07:17:30,841 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 8 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:17:30,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 336 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 150 Invalid, 0 Unknown, 79 Unchecked, 0.2s Time] [2021-11-20 07:17:30,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-11-20 07:17:30,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2021-11-20 07:17:30,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 52 states have (on average 1.5961538461538463) internal successors, (83), 77 states have internal predecessors, (83), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 07:17:30,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 93 transitions. [2021-11-20 07:17:30,850 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 93 transitions. Word has length 14 [2021-11-20 07:17:30,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:17:30,850 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 93 transitions. [2021-11-20 07:17:30,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:17:30,851 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 93 transitions. [2021-11-20 07:17:30,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 07:17:30,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:17:30,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:17:30,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 07:17:31,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:17:31,063 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting list_add_tailErr1REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:17:31,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:17:31,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1332328512, now seen corresponding path program 1 times [2021-11-20 07:17:31,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:17:31,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706587444] [2021-11-20 07:17:31,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:31,065 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:17:31,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:17:31,066 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:17:31,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 07:17:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:31,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-20 07:17:31,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:17:31,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:17:31,208 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 [2021-11-20 07:17:31,376 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 07:17:31,376 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 29 treesize of output 31 [2021-11-20 07:17:31,386 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 07:17:31,387 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 28 treesize of output 24 [2021-11-20 07:17:31,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:31,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:17:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:35,415 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:17:35,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [706587444] [2021-11-20 07:17:35,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [706587444] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:17:35,415 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:17:35,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-20 07:17:35,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931141383] [2021-11-20 07:17:35,416 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:17:35,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:17:35,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:17:35,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:17:35,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=150, Unknown=1, NotChecked=0, Total=182 [2021-11-20 07:17:35,417 INFO L87 Difference]: Start difference. First operand 86 states and 93 transitions. Second operand has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:17:36,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:17:36,309 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2021-11-20 07:17:36,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:17:36,310 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-20 07:17:36,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:17:36,311 INFO L225 Difference]: With dead ends: 97 [2021-11-20 07:17:36,311 INFO L226 Difference]: Without dead ends: 97 [2021-11-20 07:17:36,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=46, Invalid=193, Unknown=1, NotChecked=0, Total=240 [2021-11-20 07:17:36,312 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 9 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 185 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:17:36,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 473 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 190 Invalid, 0 Unknown, 185 Unchecked, 0.7s Time] [2021-11-20 07:17:36,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-20 07:17:36,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2021-11-20 07:17:36,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 60 states have (on average 1.5333333333333334) internal successors, (92), 85 states have internal predecessors, (92), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-20 07:17:36,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2021-11-20 07:17:36,334 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 14 [2021-11-20 07:17:36,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:17:36,335 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2021-11-20 07:17:36,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:17:36,335 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2021-11-20 07:17:36,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 07:17:36,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:17:36,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:17:36,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 07:17:36,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:17:36,536 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting list_add_tailErr2REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:17:36,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:17:36,537 INFO L85 PathProgramCache]: Analyzing trace with hash -467443808, now seen corresponding path program 1 times [2021-11-20 07:17:36,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:17:36,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451252928] [2021-11-20 07:17:36,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:36,537 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:17:36,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:17:36,538 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:17:36,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 07:17:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:36,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:17:36,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:17:36,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:36,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:17:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:36,722 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:17:36,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451252928] [2021-11-20 07:17:36,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451252928] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:17:36,722 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:17:36,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 07:17:36,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126773185] [2021-11-20 07:17:36,723 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:17:36,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:17:36,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:17:36,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:17:36,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:17:36,724 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:17:36,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:17:36,946 INFO L93 Difference]: Finished difference Result 95 states and 104 transitions. [2021-11-20 07:17:36,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:17:36,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 07:17:36,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:17:36,948 INFO L225 Difference]: With dead ends: 95 [2021-11-20 07:17:36,948 INFO L226 Difference]: Without dead ends: 95 [2021-11-20 07:17:36,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:17:36,949 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 27 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:17:36,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 154 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:17:36,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-20 07:17:36,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-11-20 07:17:36,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 60 states have (on average 1.5166666666666666) internal successors, (91), 84 states have internal predecessors, (91), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-20 07:17:36,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2021-11-20 07:17:36,974 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 16 [2021-11-20 07:17:36,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:17:36,975 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2021-11-20 07:17:36,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:17:36,975 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2021-11-20 07:17:36,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 07:17:36,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:17:36,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:17:36,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 07:17:37,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:17:37,177 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting list_add_tailErr3REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:17:37,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:17:37,177 INFO L85 PathProgramCache]: Analyzing trace with hash -467443807, now seen corresponding path program 1 times [2021-11-20 07:17:37,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:17:37,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959835415] [2021-11-20 07:17:37,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:37,178 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:17:37,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:17:37,179 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:17:37,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 07:17:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:37,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 07:17:37,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:17:37,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:37,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:17:37,733 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 [2021-11-20 07:17:38,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:38,179 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:17:38,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959835415] [2021-11-20 07:17:38,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959835415] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:17:38,179 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:17:38,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 17 [2021-11-20 07:17:38,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182042849] [2021-11-20 07:17:38,180 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:17:38,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 07:17:38,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:17:38,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 07:17:38,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-20 07:17:38,182 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 14 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:17:40,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:17:40,239 INFO L93 Difference]: Finished difference Result 139 states and 147 transitions. [2021-11-20 07:17:40,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 07:17:40,240 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 14 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 07:17:40,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:17:40,242 INFO L225 Difference]: With dead ends: 139 [2021-11-20 07:17:40,242 INFO L226 Difference]: Without dead ends: 139 [2021-11-20 07:17:40,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2021-11-20 07:17:40,243 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 327 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:17:40,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 540 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 07:17:40,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-20 07:17:40,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 118. [2021-11-20 07:17:40,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 81 states have (on average 1.5679012345679013) internal successors, (127), 105 states have internal predecessors, (127), 7 states have call successors, (7), 7 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-20 07:17:40,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 141 transitions. [2021-11-20 07:17:40,253 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 141 transitions. Word has length 16 [2021-11-20 07:17:40,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:17:40,255 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 141 transitions. [2021-11-20 07:17:40,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 14 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:17:40,256 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 141 transitions. [2021-11-20 07:17:40,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 07:17:40,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:17:40,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:17:40,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 07:17:40,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:17:40,469 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting list_add_tailErr4REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:17:40,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:17:40,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1605856063, now seen corresponding path program 1 times [2021-11-20 07:17:40,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:17:40,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013790464] [2021-11-20 07:17:40,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:40,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:17:40,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:17:40,471 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:17:40,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 07:17:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:40,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:17:40,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:17:40,597 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 [2021-11-20 07:17:40,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:40,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:17:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:40,746 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:17:40,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013790464] [2021-11-20 07:17:40,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013790464] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:17:40,747 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:17:40,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 07:17:40,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445593830] [2021-11-20 07:17:40,748 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:17:40,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:17:40,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:17:40,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:17:40,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:17:40,749 INFO L87 Difference]: Start difference. First operand 118 states and 141 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:17:41,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:17:41,219 INFO L93 Difference]: Finished difference Result 123 states and 136 transitions. [2021-11-20 07:17:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:17:41,220 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-20 07:17:41,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:17:41,221 INFO L225 Difference]: With dead ends: 123 [2021-11-20 07:17:41,221 INFO L226 Difference]: Without dead ends: 123 [2021-11-20 07:17:41,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:17:41,222 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 48 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:17:41,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 220 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 07:17:41,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-20 07:17:41,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 117. [2021-11-20 07:17:41,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 81 states have (on average 1.5061728395061729) internal successors, (122), 104 states have internal predecessors, (122), 7 states have call successors, (7), 7 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-20 07:17:41,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 136 transitions. [2021-11-20 07:17:41,231 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 136 transitions. Word has length 17 [2021-11-20 07:17:41,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:17:41,231 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 136 transitions. [2021-11-20 07:17:41,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:17:41,232 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 136 transitions. [2021-11-20 07:17:41,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 07:17:41,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:17:41,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:17:41,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 07:17:41,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:17:41,445 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting list_add_tailErr5REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:17:41,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:17:41,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1605856062, now seen corresponding path program 1 times [2021-11-20 07:17:41,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:17:41,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729433006] [2021-11-20 07:17:41,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:41,446 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:17:41,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:17:41,447 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:17:41,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 07:17:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:41,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 07:17:41,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:17:41,545 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 [2021-11-20 07:17:41,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:41,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:17:42,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:42,076 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:17:42,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729433006] [2021-11-20 07:17:42,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729433006] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:17:42,076 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:17:42,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-20 07:17:42,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550478019] [2021-11-20 07:17:42,076 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:17:42,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:17:42,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:17:42,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:17:42,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:17:42,077 INFO L87 Difference]: Start difference. First operand 117 states and 136 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:17:42,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:17:42,924 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2021-11-20 07:17:42,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:17:42,925 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-20 07:17:42,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:17:42,926 INFO L225 Difference]: With dead ends: 121 [2021-11-20 07:17:42,926 INFO L226 Difference]: Without dead ends: 121 [2021-11-20 07:17:42,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:17:42,927 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 57 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:17:42,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 327 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 07:17:42,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-20 07:17:42,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2021-11-20 07:17:42,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 81 states have (on average 1.4567901234567902) internal successors, (118), 104 states have internal predecessors, (118), 7 states have call successors, (7), 7 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-20 07:17:42,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 132 transitions. [2021-11-20 07:17:42,934 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 132 transitions. Word has length 17 [2021-11-20 07:17:42,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:17:42,935 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 132 transitions. [2021-11-20 07:17:42,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:17:42,935 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 132 transitions. [2021-11-20 07:17:42,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 07:17:42,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:17:42,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:17:42,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 07:17:43,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:17:43,147 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting list_add_tailErr8REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:17:43,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:17:43,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1334414076, now seen corresponding path program 1 times [2021-11-20 07:17:43,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:17:43,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729646308] [2021-11-20 07:17:43,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:43,148 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:17:43,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:17:43,149 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:17:43,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 07:17:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:43,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-20 07:17:43,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:17:43,321 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 [2021-11-20 07:17:43,376 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 13 treesize of output 9 [2021-11-20 07:17:43,444 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-20 07:17:43,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 07:17:43,538 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:17:43,539 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 20 treesize of output 20 [2021-11-20 07:17:43,766 INFO L354 Elim1Store]: treesize reduction 562, result has 2.9 percent of original size [2021-11-20 07:17:43,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 27 [2021-11-20 07:17:43,912 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-20 07:17:43,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 17 [2021-11-20 07:17:43,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:43,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:17:44,084 INFO L354 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2021-11-20 07:17:44,084 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 24 [2021-11-20 07:17:46,301 WARN L838 $PredicateComparison]: unable to prove that (forall ((|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (= (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_1) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32)) v_DerPreprocessor_2) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32)) v_DerPreprocessor_3) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32)) v_DerPreprocessor_4)) |c_create_sub_list_insert_sub_~head#1.base|) (bvadd |c_create_sub_list_insert_sub_~head#1.offset| (_ bv4 32))) |c_create_sub_list_insert_sub_~head#1.base|)) is different from false [2021-11-20 07:17:48,383 WARN L838 $PredicateComparison]: unable to prove that (forall ((|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (|v_create_sub_list_insert_sub_~sub~0#1.base_17| (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_17|)))) (= (select (select (store |c_#memory_$Pointer$.base| |v_create_sub_list_insert_sub_~sub~0#1.base_17| (store (store (store (store (select |c_#memory_$Pointer$.base| |v_create_sub_list_insert_sub_~sub~0#1.base_17|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_1) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32)) v_DerPreprocessor_2) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32)) v_DerPreprocessor_3) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32)) v_DerPreprocessor_4)) |c_create_sub_list_~sub#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|)) |c_create_sub_list_~sub#1.base|))) is different from false [2021-11-20 07:17:50,453 WARN L838 $PredicateComparison]: unable to prove that (forall ((|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (|v_create_sub_list_insert_sub_~sub~0#1.base_17| (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_17|)))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_create_sub_list_~sub#1.base| (store (select |c_#memory_$Pointer$.base| |c_create_sub_list_~sub#1.base|) |c_create_sub_list_~sub#1.offset| |c_create_sub_list_~sub#1.base|)))) (store .cse0 |v_create_sub_list_insert_sub_~sub~0#1.base_17| (store (store (store (store (select .cse0 |v_create_sub_list_insert_sub_~sub~0#1.base_17|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_1) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32)) v_DerPreprocessor_2) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32)) v_DerPreprocessor_3) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32)) v_DerPreprocessor_4))) |c_create_sub_list_~sub#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|)) |c_create_sub_list_~sub#1.base|))) is different from false [2021-11-20 07:17:50,674 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:17:50,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729646308] [2021-11-20 07:17:50,675 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 07:17:50,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [937429424] [2021-11-20 07:17:50,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:50,675 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 07:17:50,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/cvc4 [2021-11-20 07:17:50,684 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 07:17:50,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-20 07:17:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:50,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-20 07:17:50,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:17:50,944 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 [2021-11-20 07:17:51,166 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 13 treesize of output 9 [2021-11-20 07:17:51,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:51,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 07:17:51,419 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:17:51,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-11-20 07:17:51,667 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-11-20 07:17:51,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 25 [2021-11-20 07:17:51,921 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:17:51,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 17 [2021-11-20 07:17:51,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:51,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:17:52,054 INFO L354 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2021-11-20 07:17:52,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-11-20 07:17:58,598 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (|v_create_sub_list_insert_sub_~sub~0#1.base_18| (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_18|))))) (= (select (select (store |c_#memory_$Pointer$.base| |v_create_sub_list_insert_sub_~sub~0#1.base_18| (store (store (store (store (select |c_#memory_$Pointer$.base| |v_create_sub_list_insert_sub_~sub~0#1.base_18|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_5) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32)) v_DerPreprocessor_6) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32)) v_DerPreprocessor_7) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32)) v_DerPreprocessor_8)) |c_create_sub_list_~sub#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|)) |c_create_sub_list_~sub#1.base|))) is different from false [2021-11-20 07:18:00,670 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (|v_create_sub_list_insert_sub_~sub~0#1.base_18| (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_18|))))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_create_sub_list_~sub#1.base| (store (select |c_#memory_$Pointer$.base| |c_create_sub_list_~sub#1.base|) |c_create_sub_list_~sub#1.offset| |c_create_sub_list_~sub#1.base|)))) (store .cse0 |v_create_sub_list_insert_sub_~sub~0#1.base_18| (store (store (store (store (select .cse0 |v_create_sub_list_insert_sub_~sub~0#1.base_18|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_5) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32)) v_DerPreprocessor_6) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32)) v_DerPreprocessor_7) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32)) v_DerPreprocessor_8))) |c_create_sub_list_~sub#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|)) |c_create_sub_list_~sub#1.base|))) is different from false [2021-11-20 07:18:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:18:02,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [937429424] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:18:02,919 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:18:02,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 21 [2021-11-20 07:18:02,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469461486] [2021-11-20 07:18:02,920 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:18:02,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-20 07:18:02,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:18:02,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-20 07:18:02,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=572, Unknown=7, NotChecked=260, Total=930 [2021-11-20 07:18:02,921 INFO L87 Difference]: Start difference. First operand 117 states and 132 transitions. Second operand has 22 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:18:05,023 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv8 32) |c_create_sub_list_~sub#1.offset|) (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (|v_create_sub_list_insert_sub_~sub~0#1.base_18| (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_18|))))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_create_sub_list_~sub#1.base| (store (select |c_#memory_$Pointer$.base| |c_create_sub_list_~sub#1.base|) |c_create_sub_list_~sub#1.offset| |c_create_sub_list_~sub#1.base|)))) (store .cse0 |v_create_sub_list_insert_sub_~sub~0#1.base_18| (store (store (store (store (select .cse0 |v_create_sub_list_insert_sub_~sub~0#1.base_18|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_5) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32)) v_DerPreprocessor_6) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32)) v_DerPreprocessor_7) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32)) v_DerPreprocessor_8))) |c_create_sub_list_~sub#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|)) |c_create_sub_list_~sub#1.base|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |c_create_sub_list_#in~sub#1.base|))))) (_ bv1 1))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |c_create_sub_list_~sub#1.base|))))) (_ bv1 1))) (= (select (select |c_#memory_$Pointer$.base| |c_create_sub_list_~sub#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|)) |c_create_sub_list_~sub#1.base|) (= |c_create_sub_list_#in~sub#1.offset| (_ bv8 32))) is different from false [2021-11-20 07:18:32,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:18:32,142 INFO L93 Difference]: Finished difference Result 124 states and 139 transitions. [2021-11-20 07:18:32,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 07:18:32,143 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-20 07:18:32,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:18:32,145 INFO L225 Difference]: With dead ends: 124 [2021-11-20 07:18:32,145 INFO L226 Difference]: Without dead ends: 124 [2021-11-20 07:18:32,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 30 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 44.1s TimeCoverageRelationStatistics Valid=156, Invalid=916, Unknown=8, NotChecked=402, Total=1482 [2021-11-20 07:18:32,147 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 50 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 163 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:18:32,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 603 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 297 Invalid, 0 Unknown, 163 Unchecked, 0.7s Time] [2021-11-20 07:18:32,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-20 07:18:32,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2021-11-20 07:18:32,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 86 states have (on average 1.441860465116279) internal successors, (124), 109 states have internal predecessors, (124), 7 states have call successors, (7), 7 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-20 07:18:32,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 138 transitions. [2021-11-20 07:18:32,154 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 138 transitions. Word has length 19 [2021-11-20 07:18:32,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:18:32,155 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 138 transitions. [2021-11-20 07:18:32,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:18:32,155 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 138 transitions. [2021-11-20 07:18:32,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 07:18:32,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:18:32,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:18:32,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-20 07:18:32,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-20 07:18:32,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt [2021-11-20 07:18:32,569 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting list_add_tailErr9REQUIRES_VIOLATION === [create_sub_listErr0REQUIRES_VIOLATION, create_sub_listErr1REQUIRES_VIOLATION, create_sub_listErr2REQUIRES_VIOLATION, create_sub_listErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 07:18:32,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:18:32,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1334414075, now seen corresponding path program 1 times [2021-11-20 07:18:32,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:18:32,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1500267082] [2021-11-20 07:18:32,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:18:32,570 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:18:32,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:18:32,579 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:18:32,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 07:18:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:32,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-20 07:18:32,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:18:32,782 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 [2021-11-20 07:18:32,791 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 [2021-11-20 07:18:32,917 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 13 treesize of output 9 [2021-11-20 07:18:32,927 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 13 treesize of output 9 [2021-11-20 07:18:32,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:18:32,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 07:18:33,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:18:33,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 07:18:33,136 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:18:33,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-11-20 07:18:33,168 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 [2021-11-20 07:18:33,496 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-11-20 07:18:33,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 130 treesize of output 88 [2021-11-20 07:18:33,651 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-11-20 07:18:33,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 82 treesize of output 40 [2021-11-20 07:18:33,988 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:18:33,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 36 [2021-11-20 07:18:33,997 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:18:33,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2021-11-20 07:18:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:18:34,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:18:48,917 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_19| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_19|)))) (and (forall ((|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |v_create_sub_list_insert_sub_~sub~0#1.base_19| (store (store (store (store (select |c_#memory_$Pointer$.offset| |v_create_sub_list_insert_sub_~sub~0#1.base_19|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_13) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32)) v_DerPreprocessor_14) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32)) v_DerPreprocessor_15) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32)) v_DerPreprocessor_16)) |c_create_sub_list_~sub#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|)))) (bvule .cse0 (bvadd .cse0 (_ bv4 32))))) (forall ((|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse1 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32))) (.cse2 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32))) (.cse3 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32))) (.cse4 (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |v_create_sub_list_insert_sub_~sub~0#1.base_19| (store (store (store (store (select |c_#memory_$Pointer$.offset| |v_create_sub_list_insert_sub_~sub~0#1.base_19|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_13) .cse1 v_DerPreprocessor_14) .cse2 v_DerPreprocessor_15) .cse3 v_DerPreprocessor_16)) |c_create_sub_list_~sub#1.base|) .cse4) (_ bv4 32)) (select (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_19| (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| |v_create_sub_list_insert_sub_~sub~0#1.base_19| (store (store (store (store (select |c_#memory_$Pointer$.base| |v_create_sub_list_insert_sub_~sub~0#1.base_19|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_9) .cse1 v_DerPreprocessor_10) .cse2 v_DerPreprocessor_11) .cse3 v_DerPreprocessor_12)) |c_create_sub_list_~sub#1.base|) .cse4)))))))) is different from false [2021-11-20 07:18:51,279 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_19| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_19|)))) (and (forall ((|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_create_sub_list_~sub#1.base| (store (select |c_#memory_$Pointer$.offset| |c_create_sub_list_~sub#1.base|) |c_create_sub_list_~sub#1.offset| |c_create_sub_list_~sub#1.offset|)))) (store .cse1 |v_create_sub_list_insert_sub_~sub~0#1.base_19| (store (store (store (store (select .cse1 |v_create_sub_list_insert_sub_~sub~0#1.base_19|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_13) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32)) v_DerPreprocessor_14) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32)) v_DerPreprocessor_15) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32)) v_DerPreprocessor_16))) |c_create_sub_list_~sub#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|)))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse3 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32))) (.cse4 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32))) (.cse5 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32))) (.cse6 (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_create_sub_list_~sub#1.base| (store (select |c_#memory_$Pointer$.offset| |c_create_sub_list_~sub#1.base|) |c_create_sub_list_~sub#1.offset| |c_create_sub_list_~sub#1.offset|)))) (store .cse2 |v_create_sub_list_insert_sub_~sub~0#1.base_19| (store (store (store (store (select .cse2 |v_create_sub_list_insert_sub_~sub~0#1.base_19|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_13) .cse3 v_DerPreprocessor_14) .cse4 v_DerPreprocessor_15) .cse5 v_DerPreprocessor_16))) |c_create_sub_list_~sub#1.base|) .cse6)) (select (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_19| (_ bv12 32)) (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_create_sub_list_~sub#1.base| (store (select |c_#memory_$Pointer$.base| |c_create_sub_list_~sub#1.base|) |c_create_sub_list_~sub#1.offset| |c_create_sub_list_~sub#1.base|)))) (store .cse7 |v_create_sub_list_insert_sub_~sub~0#1.base_19| (store (store (store (store (select .cse7 |v_create_sub_list_insert_sub_~sub~0#1.base_19|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_9) .cse3 v_DerPreprocessor_10) .cse4 v_DerPreprocessor_11) .cse5 v_DerPreprocessor_12))) |c_create_sub_list_~sub#1.base|) .cse6)))))))) is different from false [2021-11-20 07:18:51,853 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:18:51,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1500267082] [2021-11-20 07:18:51,854 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 07:18:51,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [489128226] [2021-11-20 07:18:51,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:18:51,854 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 07:18:51,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/cvc4 [2021-11-20 07:18:51,855 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 07:18:51,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-20 07:18:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:52,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-20 07:18:52,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:18:52,138 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 [2021-11-20 07:18:52,147 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 [2021-11-20 07:18:52,214 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 13 treesize of output 9 [2021-11-20 07:18:52,222 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 13 treesize of output 9 [2021-11-20 07:18:52,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:18:52,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 07:18:52,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:18:52,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 07:18:52,329 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:18:52,329 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 22 treesize of output 22 [2021-11-20 07:18:52,358 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 [2021-11-20 07:18:52,585 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-11-20 07:18:52,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 130 treesize of output 88 [2021-11-20 07:18:52,715 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-11-20 07:18:52,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 82 treesize of output 40 [2021-11-20 07:18:52,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-20 07:18:52,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-20 07:18:52,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:18:52,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:19:15,212 WARN L227 SmtUtils]: Spent 6.60s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 07:19:35,102 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_20| (_ BitVec 32))) (or (and (forall ((|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_create_sub_list_~sub#1.base| (store (select |c_#memory_$Pointer$.offset| |c_create_sub_list_~sub#1.base|) |c_create_sub_list_~sub#1.offset| |c_create_sub_list_~sub#1.offset|)))) (store .cse1 |v_create_sub_list_insert_sub_~sub~0#1.base_20| (store (store (store (store (select .cse1 |v_create_sub_list_insert_sub_~sub~0#1.base_20|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_21) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32)) v_DerPreprocessor_22) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32)) v_DerPreprocessor_23) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32)) v_DerPreprocessor_24))) |c_create_sub_list_~sub#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|)))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (let ((.cse3 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32))) (.cse4 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32))) (.cse5 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32))) (.cse6 (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_create_sub_list_~sub#1.base| (store (select |c_#memory_$Pointer$.offset| |c_create_sub_list_~sub#1.base|) |c_create_sub_list_~sub#1.offset| |c_create_sub_list_~sub#1.offset|)))) (store .cse2 |v_create_sub_list_insert_sub_~sub~0#1.base_20| (store (store (store (store (select .cse2 |v_create_sub_list_insert_sub_~sub~0#1.base_20|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_21) .cse3 v_DerPreprocessor_22) .cse4 v_DerPreprocessor_23) .cse5 v_DerPreprocessor_24))) |c_create_sub_list_~sub#1.base|) .cse6)) (select (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_20| (_ bv12 32)) (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_create_sub_list_~sub#1.base| (store (select |c_#memory_$Pointer$.base| |c_create_sub_list_~sub#1.base|) |c_create_sub_list_~sub#1.offset| |c_create_sub_list_~sub#1.base|)))) (store .cse7 |v_create_sub_list_insert_sub_~sub~0#1.base_20| (store (store (store (store (select .cse7 |v_create_sub_list_insert_sub_~sub~0#1.base_20|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_17) .cse3 v_DerPreprocessor_18) .cse4 v_DerPreprocessor_19) .cse5 v_DerPreprocessor_20))) |c_create_sub_list_~sub#1.base|) .cse6)))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_20|)))))))))) is different from false [2021-11-20 07:19:35,616 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 07:19:35,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25382826] [2021-11-20 07:19:35,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:19:35,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:19:35,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:19:35,631 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:19:35,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-20 07:19:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:35,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-20 07:19:35,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:19:35,741 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 [2021-11-20 07:19:36,262 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 13 treesize of output 9 [2021-11-20 07:19:36,269 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 13 treesize of output 9 [2021-11-20 07:19:36,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:19:36,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 07:19:36,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:19:36,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 07:19:36,383 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-20 07:19:36,384 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 18 [2021-11-20 07:19:36,418 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:19:36,418 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 21 [2021-11-20 07:19:36,688 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-11-20 07:19:36,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 130 treesize of output 88 [2021-11-20 07:19:36,798 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-11-20 07:19:36,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 82 treesize of output 40 [2021-11-20 07:19:36,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-20 07:19:36,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-20 07:19:36,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:19:36,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:19:39,546 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_29) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32)) v_DerPreprocessor_30) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32)) v_DerPreprocessor_31) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32)) v_DerPreprocessor_32)) |c_create_sub_list_insert_sub_~head#1.base|) (bvadd |c_create_sub_list_insert_sub_~head#1.offset| (_ bv4 32))))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (v_DerPreprocessor_28 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32)) (v_DerPreprocessor_27 (_ BitVec 32))) (let ((.cse1 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32))) (.cse2 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32))) (.cse3 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32))) (.cse4 (bvadd |c_create_sub_list_insert_sub_~head#1.offset| (_ bv4 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_29) .cse1 v_DerPreprocessor_30) .cse2 v_DerPreprocessor_31) .cse3 v_DerPreprocessor_32)) |c_create_sub_list_insert_sub_~head#1.base|) .cse4)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_25) .cse1 v_DerPreprocessor_26) .cse2 v_DerPreprocessor_27) .cse3 v_DerPreprocessor_28)) |c_create_sub_list_insert_sub_~head#1.base|) .cse4)))))) is different from false [2021-11-20 07:19:41,776 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_21| (_ BitVec 32))) (or (and (forall ((|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (v_DerPreprocessor_28 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32)) (v_DerPreprocessor_27 (_ BitVec 32))) (let ((.cse0 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32))) (.cse1 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32))) (.cse2 (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32))) (.cse3 (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_create_sub_list_insert_sub_~sub~0#1.base_21| (store (store (store (store (select |c_#memory_$Pointer$.offset| |v_create_sub_list_insert_sub_~sub~0#1.base_21|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_29) .cse0 v_DerPreprocessor_30) .cse1 v_DerPreprocessor_31) .cse2 v_DerPreprocessor_32)) |c_create_sub_list_~sub#1.base|) .cse3)) (select (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_21| (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| |v_create_sub_list_insert_sub_~sub~0#1.base_21| (store (store (store (store (select |c_#memory_$Pointer$.base| |v_create_sub_list_insert_sub_~sub~0#1.base_21|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_25) .cse0 v_DerPreprocessor_26) .cse1 v_DerPreprocessor_27) .cse2 v_DerPreprocessor_28)) |c_create_sub_list_~sub#1.base|) .cse3))))) (forall ((|create_sub_list_insert_sub_~sub~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| |v_create_sub_list_insert_sub_~sub~0#1.base_21| (store (store (store (store (select |c_#memory_$Pointer$.offset| |v_create_sub_list_insert_sub_~sub~0#1.base_21|) |create_sub_list_insert_sub_~sub~0#1.offset| v_DerPreprocessor_29) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv1 32)) v_DerPreprocessor_30) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv2 32)) v_DerPreprocessor_31) (bvadd |create_sub_list_insert_sub_~sub~0#1.offset| (_ bv3 32)) v_DerPreprocessor_32)) |c_create_sub_list_~sub#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|)))) (bvule .cse4 (bvadd (_ bv4 32) .cse4))))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_21|))))))) is different from false [2021-11-20 07:19:49,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:19:49,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:19:51,846 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 07:19:51,847 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 601569 treesize of output 601568 [2021-11-20 07:19:55,568 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 07:19:55,568 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:19:55,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-20 07:19:55,569 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-11-20 07:19:55,569 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-20 07:19:55,575 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr9REQUIRES_VIOLATION (30 of 31 remaining) [2021-11-20 07:19:55,577 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_sub_listErr0REQUIRES_VIOLATION (29 of 31 remaining) [2021-11-20 07:19:55,577 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_sub_listErr1REQUIRES_VIOLATION (28 of 31 remaining) [2021-11-20 07:19:55,577 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_sub_listErr2REQUIRES_VIOLATION (27 of 31 remaining) [2021-11-20 07:19:55,578 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_sub_listErr3REQUIRES_VIOLATION (26 of 31 remaining) [2021-11-20 07:19:55,578 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_sub_listErr4REQUIRES_VIOLATION (25 of 31 remaining) [2021-11-20 07:19:55,578 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_sub_listErr5REQUIRES_VIOLATION (24 of 31 remaining) [2021-11-20 07:19:55,578 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (23 of 31 remaining) [2021-11-20 07:19:55,578 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (22 of 31 remaining) [2021-11-20 07:19:55,578 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (21 of 31 remaining) [2021-11-20 07:19:55,579 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (20 of 31 remaining) [2021-11-20 07:19:55,579 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (19 of 31 remaining) [2021-11-20 07:19:55,579 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (18 of 31 remaining) [2021-11-20 07:19:55,579 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (17 of 31 remaining) [2021-11-20 07:19:55,579 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (16 of 31 remaining) [2021-11-20 07:19:55,580 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (15 of 31 remaining) [2021-11-20 07:19:55,580 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (14 of 31 remaining) [2021-11-20 07:19:55,580 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE (13 of 31 remaining) [2021-11-20 07:19:55,580 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE (12 of 31 remaining) [2021-11-20 07:19:55,581 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE (11 of 31 remaining) [2021-11-20 07:19:55,581 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE (10 of 31 remaining) [2021-11-20 07:19:55,581 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK (9 of 31 remaining) [2021-11-20 07:19:55,581 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr0REQUIRES_VIOLATION (8 of 31 remaining) [2021-11-20 07:19:55,581 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr1REQUIRES_VIOLATION (7 of 31 remaining) [2021-11-20 07:19:55,581 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr2REQUIRES_VIOLATION (6 of 31 remaining) [2021-11-20 07:19:55,582 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr3REQUIRES_VIOLATION (5 of 31 remaining) [2021-11-20 07:19:55,582 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr4REQUIRES_VIOLATION (4 of 31 remaining) [2021-11-20 07:19:55,582 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr5REQUIRES_VIOLATION (3 of 31 remaining) [2021-11-20 07:19:55,582 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr6REQUIRES_VIOLATION (2 of 31 remaining) [2021-11-20 07:19:55,582 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr7REQUIRES_VIOLATION (1 of 31 remaining) [2021-11-20 07:19:55,583 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr8REQUIRES_VIOLATION (0 of 31 remaining) [2021-11-20 07:19:55,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-20 07:19:55,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-20 07:19:56,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-20 07:19:56,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:19:56,198 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:19:56,201 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 07:19:56,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:19:56 BoogieIcfgContainer [2021-11-20 07:19:56,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 07:19:56,214 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 07:19:56,214 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 07:19:56,214 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 07:19:56,215 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:17:25" (3/4) ... [2021-11-20 07:19:56,218 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 07:19:56,218 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 07:19:56,219 INFO L158 Benchmark]: Toolchain (without parser) took 151976.38ms. Allocated memory was 58.7MB in the beginning and 268.4MB in the end (delta: 209.7MB). Free memory was 35.5MB in the beginning and 136.0MB in the end (delta: -100.5MB). Peak memory consumption was 109.5MB. Max. memory is 16.1GB. [2021-11-20 07:19:56,220 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 58.7MB. Free memory is still 39.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:19:56,220 INFO L158 Benchmark]: CACSL2BoogieTranslator took 642.59ms. Allocated memory is still 58.7MB. Free memory was 35.3MB in the beginning and 30.0MB in the end (delta: 5.2MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2021-11-20 07:19:56,220 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.01ms. Allocated memory is still 58.7MB. Free memory was 30.0MB in the beginning and 27.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:19:56,221 INFO L158 Benchmark]: Boogie Preprocessor took 39.00ms. Allocated memory is still 58.7MB. Free memory was 27.6MB in the beginning and 25.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:19:56,221 INFO L158 Benchmark]: RCFGBuilder took 652.33ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 25.7MB in the beginning and 42.4MB in the end (delta: -16.7MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. [2021-11-20 07:19:56,222 INFO L158 Benchmark]: TraceAbstraction took 150569.61ms. Allocated memory was 77.6MB in the beginning and 268.4MB in the end (delta: 190.8MB). Free memory was 41.8MB in the beginning and 136.7MB in the end (delta: -94.9MB). Peak memory consumption was 146.9MB. Max. memory is 16.1GB. [2021-11-20 07:19:56,222 INFO L158 Benchmark]: Witness Printer took 4.54ms. Allocated memory is still 268.4MB. Free memory was 136.7MB in the beginning and 136.0MB in the end (delta: 653.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:19:56,228 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 58.7MB. Free memory is still 39.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 642.59ms. Allocated memory is still 58.7MB. Free memory was 35.3MB in the beginning and 30.0MB in the end (delta: 5.2MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.01ms. Allocated memory is still 58.7MB. Free memory was 30.0MB in the beginning and 27.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.00ms. Allocated memory is still 58.7MB. Free memory was 27.6MB in the beginning and 25.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 652.33ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 25.7MB in the beginning and 42.4MB in the end (delta: -16.7MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. * TraceAbstraction took 150569.61ms. Allocated memory was 77.6MB in the beginning and 268.4MB in the end (delta: 190.8MB). Free memory was 41.8MB in the beginning and 136.7MB in the end (delta: -94.9MB). Peak memory consumption was 146.9MB. Max. memory is 16.1GB. * Witness Printer took 4.54ms. Allocated memory is still 268.4MB. Free memory was 136.7MB in the beginning and 136.0MB in the end (delta: 653.1kB). 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: 534]: 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: [L601] struct list_head top = { &(top), &(top) }; [L602] CALL create_top(&top) [L596] CALL insert_top(top) [L586] struct top_list *top = malloc(sizeof(*top)); [L587] COND FALSE !(!top) [L589] CALL create_sub_list(&top->sub1) [L578] sub->prev = sub [L579] sub->next = sub [L581] CALL insert_sub(sub) [L570] struct sub_list *sub = malloc(sizeof(*sub)); [L571] COND FALSE !(!sub) [L573] sub->number = 0 [L574] CALL list_add_tail(&sub->link, head) [L538] EXPR head->prev [L538] CALL __list_add(new, head->prev, head) [L531] next->prev = new [L532] new->next = next [L533] new->prev = prev [L534] prev->next = new - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: 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: 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: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 599]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed 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: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: 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 3 procedures, 83 locations, 31 error locations. Started 1 CEGAR loops. OverallTime: 150.5s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 35.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 623 SdHoareTripleChecker+Valid, 5.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 612 mSDsluCounter, 3439 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 427 IncrementalHoareTripleChecker+Unchecked, 2580 mSDsCounter, 51 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1644 IncrementalHoareTripleChecker+Invalid, 2122 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 51 mSolverCounterUnsat, 859 mSDtfsCounter, 1644 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 349 GetRequests, 205 SyntacticMatches, 20 SemanticMatches, 124 ConstructedPredicates, 6 IntricatePredicates, 3 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 50.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122occurred in iteration=12, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 70 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 45.8s InterpolantComputationTime, 192 NumberOfCodeBlocks, 192 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 320 ConstructedInterpolants, 28 QuantifiedInterpolants, 2843 SizeOfPredicates, 104 NumberOfNonLiveVariables, 1403 ConjunctsInSsa, 178 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 PerfectInterpolantSequences, 0/0 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 [2021-11-20 07:19:56,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4485e0-e655-4716-afbb-c74ef67666b6/bin/uautomizer-DQz5hQGWxF/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