./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 704abadf4a8c9a8af61418181b8ae91b3e3da2fe96f0fde7751e748b781a863c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:53:57,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:53:57,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:53:57,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:53:57,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:53:57,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:53:57,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:53:57,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:53:57,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:53:57,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:53:57,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:53:57,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:53:57,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:53:57,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:53:57,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:53:57,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:53:57,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:53:57,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:53:57,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:53:57,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:53:57,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:53:57,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:53:57,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:53:57,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:53:57,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:53:57,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:53:57,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:53:57,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:53:57,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:53:57,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:53:57,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:53:57,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:53:57,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:53:57,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:53:57,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:53:57,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:53:57,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:53:57,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:53:57,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:53:57,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:53:57,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:53:57,399 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 03:53:57,439 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:53:57,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:53:57,441 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:53:57,441 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:53:57,442 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:53:57,442 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:53:57,442 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:53:57,442 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:53:57,443 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:53:57,443 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:53:57,443 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:53:57,443 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:53:57,444 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:53:57,444 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:53:57,444 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:53:57,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:53:57,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:53:57,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:53:57,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:53:57,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:53:57,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:53:57,447 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:53:57,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:53:57,447 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:53:57,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:53:57,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:53:57,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:53:57,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:53:57,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:53:57,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:53:57,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:53:57,450 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:53:57,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:53:57,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:53:57,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:53:57,451 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:53:57,451 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 704abadf4a8c9a8af61418181b8ae91b3e3da2fe96f0fde7751e748b781a863c [2021-11-03 03:53:57,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:53:57,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:53:57,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:53:57,784 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:53:57,785 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:53:57,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i [2021-11-03 03:53:57,869 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/data/856588dfd/3746e6d16a3b40a2ab947b780cd2130e/FLAG027ac3169 [2021-11-03 03:53:58,800 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:53:58,801 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i [2021-11-03 03:53:58,862 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/data/856588dfd/3746e6d16a3b40a2ab947b780cd2130e/FLAG027ac3169 [2021-11-03 03:53:59,367 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/data/856588dfd/3746e6d16a3b40a2ab947b780cd2130e [2021-11-03 03:53:59,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:53:59,372 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:53:59,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:53:59,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:53:59,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:53:59,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:53:59" (1/1) ... [2021-11-03 03:53:59,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e75783a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:59, skipping insertion in model container [2021-11-03 03:53:59,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:53:59" (1/1) ... [2021-11-03 03:53:59,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:53:59,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:53:59,916 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4500,4513] [2021-11-03 03:53:59,925 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4560,4573] [2021-11-03 03:53:59,954 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 03:53:59,962 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 03:54:01,117 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:01,118 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:01,119 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:01,120 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:01,121 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:01,136 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:01,137 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:01,139 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:01,140 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:01,603 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 03:54:01,604 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 03:54:01,605 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 03:54:01,607 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 03:54:01,608 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 03:54:01,609 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 03:54:01,610 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 03:54:01,610 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 03:54:01,611 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 03:54:01,612 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 03:54:01,752 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 03:54:01,768 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.IllegalArgumentException: byte size smaller than 1 makes no sense at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.preferences.CACSLPreferenceInitializer$MemoryModel.getPreciseEnoughMemoryModelFor(CACSLPreferenceInitializer.java:194) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.checkIfNecessaryMemoryModelAdaption(CHandler.java:1054) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:962) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1369) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:249) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.translateInitializer(CHandler.java:2938) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleIASTDeclarator(CHandler.java:2798) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2101) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:143) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1119) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:211) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1068) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1452) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3247) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2321) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:594) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-03 03:54:01,773 INFO L168 Benchmark]: Toolchain (without parser) took 2399.84 ms. Allocated memory is still 119.5 MB. Free memory was 76.3 MB in the beginning and 61.2 MB in the end (delta: 15.0 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. [2021-11-03 03:54:01,774 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 79.7 MB. Free memory was 50.6 MB in the beginning and 50.5 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:54:01,775 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2394.80 ms. Allocated memory is still 119.5 MB. Free memory was 76.1 MB in the beginning and 61.2 MB in the end (delta: 14.8 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:54:01,777 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 79.7 MB. Free memory was 50.6 MB in the beginning and 50.5 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2394.80 ms. Allocated memory is still 119.5 MB. Free memory was 76.1 MB in the beginning and 61.2 MB in the end (delta: 14.8 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: IllegalArgumentException: byte size smaller than 1 makes no sense de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: IllegalArgumentException: byte size smaller than 1 makes no sense: de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.preferences.CACSLPreferenceInitializer$MemoryModel.getPreciseEnoughMemoryModelFor(CACSLPreferenceInitializer.java:194) 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_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 704abadf4a8c9a8af61418181b8ae91b3e3da2fe96f0fde7751e748b781a863c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:54:04,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:54:04,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:54:04,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:54:04,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:54:04,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:54:04,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:54:04,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:54:04,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:54:04,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:54:04,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:54:04,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:54:04,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:54:04,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:54:04,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:54:04,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:54:04,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:54:04,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:54:04,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:54:04,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:54:04,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:54:04,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:54:04,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:54:04,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:54:04,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:54:04,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:54:04,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:54:04,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:54:04,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:54:04,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:54:04,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:54:04,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:54:04,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:54:04,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:54:04,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:54:04,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:54:04,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:54:04,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:54:04,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:54:04,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:54:04,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:54:04,508 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 03:54:04,549 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:54:04,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:54:04,554 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:54:04,554 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:54:04,555 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:54:04,555 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:54:04,555 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:54:04,556 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:54:04,556 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:54:04,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:54:04,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:54:04,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:54:04,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:54:04,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:54:04,561 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:54:04,561 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:54:04,561 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:54:04,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:54:04,562 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:54:04,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:54:04,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:54:04,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:54:04,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:54:04,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:54:04,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:54:04,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:54:04,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:54:04,565 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:54:04,565 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:54:04,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:54:04,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:54:04,566 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:54:04,567 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_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 704abadf4a8c9a8af61418181b8ae91b3e3da2fe96f0fde7751e748b781a863c [2021-11-03 03:54:04,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:54:04,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:54:04,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:54:04,998 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:54:04,999 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:54:05,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i [2021-11-03 03:54:05,074 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/data/384575b5a/c9592166bce24b7eafc4779c900ebd98/FLAGe63758116 [2021-11-03 03:54:06,209 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:54:06,215 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i [2021-11-03 03:54:06,278 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/data/384575b5a/c9592166bce24b7eafc4779c900ebd98/FLAGe63758116 [2021-11-03 03:54:06,562 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/data/384575b5a/c9592166bce24b7eafc4779c900ebd98 [2021-11-03 03:54:06,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:54:06,567 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:54:06,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:54:06,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:54:06,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:54:06,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:54:06" (1/1) ... [2021-11-03 03:54:06,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b54356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:06, skipping insertion in model container [2021-11-03 03:54:06,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:54:06" (1/1) ... [2021-11-03 03:54:06,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:54:06,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:54:07,240 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4500,4513] [2021-11-03 03:54:07,247 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4560,4573] [2021-11-03 03:54:07,270 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 03:54:07,276 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 03:54:08,178 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:08,179 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:08,179 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:08,180 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:08,181 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:08,198 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:08,202 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:08,207 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:08,211 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:08,603 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 03:54:08,605 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 03:54:08,606 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 03:54:08,607 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 03:54:08,608 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 03:54:08,609 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 03:54:08,610 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 03:54:08,610 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 03:54:08,611 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 03:54:08,612 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 03:54:08,794 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 03:54:08,883 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:08,883 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:08,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:54:09,039 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:54:09,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:54:09,139 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4500,4513] [2021-11-03 03:54:09,139 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4560,4573] [2021-11-03 03:54:09,141 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 03:54:09,141 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 03:54:09,198 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:09,198 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:09,199 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:09,199 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:09,206 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:09,220 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:09,223 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:09,224 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:09,230 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:09,294 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 03:54:09,294 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 03:54:09,295 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 03:54:09,296 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 03:54:09,297 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 03:54:09,300 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 03:54:09,301 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 03:54:09,301 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 03:54:09,302 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 03:54:09,302 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 03:54:09,332 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 03:54:09,420 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:09,421 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:09,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:54:09,506 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:54:09,531 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4500,4513] [2021-11-03 03:54:09,532 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4560,4573] [2021-11-03 03:54:09,533 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 03:54:09,534 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 03:54:09,599 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:09,599 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:09,599 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:09,600 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:09,600 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:09,607 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:09,607 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:09,608 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:09,609 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:09,637 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 03:54:09,637 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 03:54:09,638 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 03:54:09,639 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 03:54:09,639 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 03:54:09,640 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 03:54:09,640 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 03:54:09,641 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 03:54:09,641 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 03:54:09,642 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 03:54:09,663 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 03:54:09,728 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:09,728 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:09,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:54:10,123 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:54:10,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:10 WrapperNode [2021-11-03 03:54:10,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:54:10,125 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:54:10,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:54:10,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:54:10,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:10" (1/1) ... [2021-11-03 03:54:10,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:10" (1/1) ... [2021-11-03 03:54:10,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:54:10,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:54:10,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:54:10,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:54:10,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:10" (1/1) ... [2021-11-03 03:54:10,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:10" (1/1) ... [2021-11-03 03:54:10,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:10" (1/1) ... [2021-11-03 03:54:10,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:10" (1/1) ... [2021-11-03 03:54:10,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:10" (1/1) ... [2021-11-03 03:54:10,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:10" (1/1) ... [2021-11-03 03:54:10,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:10" (1/1) ... [2021-11-03 03:54:10,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:54:10,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:54:10,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:54:10,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:54:10,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:10" (1/1) ... [2021-11-03 03:54:10,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:54:10,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:54:10,579 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:54:10,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:54:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:54:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:54:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 03:54:10,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-03 03:54:10,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 03:54:10,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 03:54:10,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:54:10,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:54:10,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 03:54:10,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 03:54:10,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:54:10,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 03:54:10,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 03:54:10,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 03:54:23,345 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:54:23,345 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-11-03 03:54:23,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:54:23 BoogieIcfgContainer [2021-11-03 03:54:23,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:54:23,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:54:23,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:54:23,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:54:23,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:54:06" (1/3) ... [2021-11-03 03:54:23,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e136f0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:54:23, skipping insertion in model container [2021-11-03 03:54:23,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:10" (2/3) ... [2021-11-03 03:54:23,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e136f0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:54:23, skipping insertion in model container [2021-11-03 03:54:23,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:54:23" (3/3) ... [2021-11-03 03:54:23,354 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_from_array_harness.i [2021-11-03 03:54:23,359 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:54:23,360 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-03 03:54:23,405 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:54:23,410 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-11-03 03:54:23,410 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-03 03:54:23,424 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 54 states have (on average 1.462962962962963) internal successors, (79), 59 states have internal predecessors, (79), 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) [2021-11-03 03:54:23,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 03:54:23,429 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:23,429 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:54:23,430 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:54:23,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:23,435 INFO L85 PathProgramCache]: Analyzing trace with hash -86834800, now seen corresponding path program 1 times [2021-11-03 03:54:23,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:54:23,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608880220] [2021-11-03 03:54:23,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:23,456 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:54:23,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:54:23,459 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:54:23,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:54:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:27,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 1697 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 03:54:27,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:54:27,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:27,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:54:27,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:27,581 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:54:27,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608880220] [2021-11-03 03:54:27,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608880220] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:27,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:27,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:54:27,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023535197] [2021-11-03 03:54:27,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 03:54:27,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:54:27,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 03:54:27,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:54:27,606 INFO L87 Difference]: Start difference. First operand has 60 states, 54 states have (on average 1.462962962962963) internal successors, (79), 59 states have internal predecessors, (79), 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) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-03 03:54:27,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:27,629 INFO L93 Difference]: Finished difference Result 117 states and 154 transitions. [2021-11-03 03:54:27,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 03:54:27,631 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-11-03 03:54:27,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:27,639 INFO L225 Difference]: With dead ends: 117 [2021-11-03 03:54:27,639 INFO L226 Difference]: Without dead ends: 53 [2021-11-03 03:54:27,641 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:54:27,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-03 03:54:27,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-11-03 03:54:27,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 52 states have internal predecessors, (62), 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) [2021-11-03 03:54:27,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2021-11-03 03:54:27,697 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 12 [2021-11-03 03:54:27,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:27,698 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2021-11-03 03:54:27,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-03 03:54:27,698 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2021-11-03 03:54:27,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 03:54:27,699 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:27,699 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:54:27,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:54:27,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:54:27,924 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:54:27,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:27,927 INFO L85 PathProgramCache]: Analyzing trace with hash -479861810, now seen corresponding path program 1 times [2021-11-03 03:54:27,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:54:27,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333471254] [2021-11-03 03:54:27,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:27,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:54:27,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:54:27,958 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:54:27,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:54:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:31,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 1697 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:54:31,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:54:31,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:31,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:54:31,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:31,991 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:54:31,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333471254] [2021-11-03 03:54:31,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333471254] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:31,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:31,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 03:54:31,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547106149] [2021-11-03 03:54:31,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:54:31,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:54:31,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:54:31,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:54:31,994 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-03 03:54:32,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:32,044 INFO L93 Difference]: Finished difference Result 90 states and 103 transitions. [2021-11-03 03:54:32,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:54:32,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2021-11-03 03:54:32,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:32,046 INFO L225 Difference]: With dead ends: 90 [2021-11-03 03:54:32,046 INFO L226 Difference]: Without dead ends: 53 [2021-11-03 03:54:32,046 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:54:32,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-03 03:54:32,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-11-03 03:54:32,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.2708333333333333) internal successors, (61), 52 states have internal predecessors, (61), 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) [2021-11-03 03:54:32,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-11-03 03:54:32,052 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 12 [2021-11-03 03:54:32,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:32,052 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-11-03 03:54:32,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-03 03:54:32,053 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-11-03 03:54:32,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-03 03:54:32,053 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:32,053 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:54:32,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:54:32,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:54:32,275 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:54:32,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:32,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1018024457, now seen corresponding path program 1 times [2021-11-03 03:54:32,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:54:32,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253187935] [2021-11-03 03:54:32,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:32,306 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:54:32,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:54:32,309 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:54:32,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:54:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:36,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 1701 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:54:36,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:54:36,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:36,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:54:36,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:36,239 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:54:36,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253187935] [2021-11-03 03:54:36,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253187935] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:36,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:36,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-03 03:54:36,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711920181] [2021-11-03 03:54:36,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:54:36,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:54:36,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:54:36,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:54:36,242 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) [2021-11-03 03:54:36,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:36,813 INFO L93 Difference]: Finished difference Result 97 states and 109 transitions. [2021-11-03 03:54:36,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 03:54:36,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 14 [2021-11-03 03:54:36,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:36,815 INFO L225 Difference]: With dead ends: 97 [2021-11-03 03:54:36,816 INFO L226 Difference]: Without dead ends: 93 [2021-11-03 03:54:36,816 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-11-03 03:54:36,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-03 03:54:36,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 61. [2021-11-03 03:54:36,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 60 states have internal predecessors, (69), 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) [2021-11-03 03:54:36,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2021-11-03 03:54:36,826 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 14 [2021-11-03 03:54:36,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:36,826 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2021-11-03 03:54:36,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) [2021-11-03 03:54:36,827 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2021-11-03 03:54:36,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 03:54:36,827 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:36,828 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:54:36,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:54:37,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:54:37,047 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:54:37,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:37,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1084310207, now seen corresponding path program 1 times [2021-11-03 03:54:37,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:54:37,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614967498] [2021-11-03 03:54:37,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:37,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:54:37,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:54:37,067 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:54:37,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:54:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:57,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 1710 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-03 03:54:57,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:54:58,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 12 [2021-11-03 03:54:58,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:58,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:54:58,430 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:58,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 17 [2021-11-03 03:54:58,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-03 03:54:58,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:58,464 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:54:58,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614967498] [2021-11-03 03:54:58,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614967498] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:58,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:58,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-11-03 03:54:58,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607067780] [2021-11-03 03:54:58,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:54:58,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:54:58,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:54:58,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:54:58,466 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 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) [2021-11-03 03:55:03,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:03,544 INFO L93 Difference]: Finished difference Result 111 states and 125 transitions. [2021-11-03 03:55:03,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 03:55:03,547 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 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 18 [2021-11-03 03:55:03,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:03,548 INFO L225 Difference]: With dead ends: 111 [2021-11-03 03:55:03,549 INFO L226 Difference]: Without dead ends: 68 [2021-11-03 03:55:03,549 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-03 03:55:03,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-03 03:55:03,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2021-11-03 03:55:03,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 62 states have internal predecessors, (71), 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) [2021-11-03 03:55:03,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2021-11-03 03:55:03,558 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 18 [2021-11-03 03:55:03,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:03,558 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2021-11-03 03:55:03,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 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) [2021-11-03 03:55:03,559 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2021-11-03 03:55:03,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 03:55:03,560 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:03,560 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:55:03,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:55:03,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:55:03,764 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:55:03,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:03,765 INFO L85 PathProgramCache]: Analyzing trace with hash -404251837, now seen corresponding path program 1 times [2021-11-03 03:55:03,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:55:03,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876202531] [2021-11-03 03:55:03,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:03,768 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:55:03,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:55:03,769 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:55:03,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 03:55:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:07,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 1707 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-03 03:55:07,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:55:08,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 68 [2021-11-03 03:55:08,661 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:55:08,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 223 treesize of output 95 [2021-11-03 03:55:08,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:08,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:55:09,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 541 treesize of output 513 [2021-11-03 03:55:09,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:09,617 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:55:09,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876202531] [2021-11-03 03:55:09,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876202531] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:09,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:09,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-11-03 03:55:09,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520158855] [2021-11-03 03:55:09,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 03:55:09,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:55:09,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 03:55:09,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-03 03:55:09,620 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 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) [2021-11-03 03:55:15,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:15,318 INFO L93 Difference]: Finished difference Result 108 states and 121 transitions. [2021-11-03 03:55:15,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 03:55:15,321 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 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 18 [2021-11-03 03:55:15,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:15,321 INFO L225 Difference]: With dead ends: 108 [2021-11-03 03:55:15,321 INFO L226 Difference]: Without dead ends: 61 [2021-11-03 03:55:15,322 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-03 03:55:15,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-03 03:55:15,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-11-03 03:55:15,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 60 states have internal predecessors, (67), 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) [2021-11-03 03:55:15,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2021-11-03 03:55:15,329 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 18 [2021-11-03 03:55:15,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:15,330 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2021-11-03 03:55:15,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 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) [2021-11-03 03:55:15,330 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2021-11-03 03:55:15,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 03:55:15,331 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:15,331 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:55:15,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 03:55:15,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:55:15,532 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:55:15,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:15,532 INFO L85 PathProgramCache]: Analyzing trace with hash 501656654, now seen corresponding path program 1 times [2021-11-03 03:55:15,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:55:15,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085934554] [2021-11-03 03:55:15,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:15,536 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:55:15,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:55:15,537 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:55:15,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 03:55:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:19,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:55:19,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:55:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:19,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:55:19,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:19,824 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:55:19,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1085934554] [2021-11-03 03:55:19,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1085934554] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:19,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:19,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 03:55:19,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729262980] [2021-11-03 03:55:19,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:55:19,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:55:19,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:55:19,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:55:19,826 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-11-03 03:55:19,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:19,986 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2021-11-03 03:55:19,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:55:19,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2021-11-03 03:55:19,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:19,990 INFO L225 Difference]: With dead ends: 82 [2021-11-03 03:55:19,990 INFO L226 Difference]: Without dead ends: 61 [2021-11-03 03:55:19,991 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:55:19,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-03 03:55:19,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-11-03 03:55:19,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.1785714285714286) internal successors, (66), 60 states have internal predecessors, (66), 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) [2021-11-03 03:55:19,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2021-11-03 03:55:19,998 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 20 [2021-11-03 03:55:19,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:19,999 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2021-11-03 03:55:19,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-11-03 03:55:19,999 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2021-11-03 03:55:20,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 03:55:20,000 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:20,001 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:55:20,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 03:55:20,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:55:20,226 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:55:20,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:20,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1522937572, now seen corresponding path program 1 times [2021-11-03 03:55:20,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:55:20,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281484640] [2021-11-03 03:55:20,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:20,231 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:55:20,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:55:20,232 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:55:20,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 03:55:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:24,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:55:24,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:55:24,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:24,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:55:24,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:24,900 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:55:24,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281484640] [2021-11-03 03:55:24,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281484640] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:24,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:24,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-03 03:55:24,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119649237] [2021-11-03 03:55:24,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:55:24,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:55:24,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:55:24,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:55:24,903 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-11-03 03:55:28,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:28,103 INFO L93 Difference]: Finished difference Result 123 states and 130 transitions. [2021-11-03 03:55:28,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:55:28,105 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 20 [2021-11-03 03:55:28,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:28,106 INFO L225 Difference]: With dead ends: 123 [2021-11-03 03:55:28,106 INFO L226 Difference]: Without dead ends: 79 [2021-11-03 03:55:28,107 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:55:28,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-03 03:55:28,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 61. [2021-11-03 03:55:28,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 60 states have internal predecessors, (64), 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) [2021-11-03 03:55:28,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2021-11-03 03:55:28,117 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 20 [2021-11-03 03:55:28,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:28,117 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2021-11-03 03:55:28,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-11-03 03:55:28,118 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2021-11-03 03:55:28,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 03:55:28,119 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:28,119 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:55:28,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-03 03:55:28,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:55:28,325 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:55:28,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:28,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1962683098, now seen corresponding path program 1 times [2021-11-03 03:55:28,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:55:28,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452532462] [2021-11-03 03:55:28,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:28,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:55:28,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:55:28,331 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:55:28,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 03:55:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:32,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 1717 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-03 03:55:32,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:55:32,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2021-11-03 03:55:32,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-11-03 03:55:33,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:33,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:55:33,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:33,772 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:55:33,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452532462] [2021-11-03 03:55:33,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452532462] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:33,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:33,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 15 [2021-11-03 03:55:33,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799546671] [2021-11-03 03:55:33,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 03:55:33,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:55:33,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 03:55:33,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-03 03:55:33,775 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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) [2021-11-03 03:55:40,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:40,834 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2021-11-03 03:55:40,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-03 03:55:40,835 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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 20 [2021-11-03 03:55:40,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:40,836 INFO L225 Difference]: With dead ends: 112 [2021-11-03 03:55:40,836 INFO L226 Difference]: Without dead ends: 108 [2021-11-03 03:55:40,837 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=335, Invalid=1225, Unknown=0, NotChecked=0, Total=1560 [2021-11-03 03:55:40,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-03 03:55:40,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 56. [2021-11-03 03:55:40,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.1346153846153846) internal successors, (59), 55 states have internal predecessors, (59), 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) [2021-11-03 03:55:40,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2021-11-03 03:55:40,845 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 20 [2021-11-03 03:55:40,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:40,845 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2021-11-03 03:55:40,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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) [2021-11-03 03:55:40,846 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2021-11-03 03:55:40,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-03 03:55:40,847 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:40,847 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:55:40,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 03:55:41,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:55:41,062 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:55:41,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:41,063 INFO L85 PathProgramCache]: Analyzing trace with hash -863865621, now seen corresponding path program 1 times [2021-11-03 03:55:41,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:55:41,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380852266] [2021-11-03 03:55:41,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:41,067 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:55:41,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:55:41,069 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:55:41,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ec1a69-a725-478a-b1d7-08000922b47d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 03:58:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:49,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-03 03:58:49,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:58:49,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:58:49,467 INFO L244 Elim1Store]: Index analysis took 191 ms [2021-11-03 03:58:49,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 79 [2021-11-03 03:58:53,694 INFO L354 Elim1Store]: treesize reduction 1202, result has 0.1 percent of original size [2021-11-03 03:58:53,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 28 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 696 treesize of output 238 [2021-11-03 03:58:53,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:58:53,781 INFO L328 TraceCheckSpWp]: Computing backward predicates...