./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_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_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/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_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/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_386aa834-3a66-4f8c-b360-10f525ee3365/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 de3da06dbfc8734cb93dce42b312357899e8d9cc914b94ba94740650fa2d8258 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:22:37,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:22:37,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:22:37,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:22:37,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:22:37,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:22:37,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:22:37,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:22:37,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:22:37,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:22:37,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:22:37,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:22:37,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:22:37,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:22:37,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:22:37,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:22:37,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:22:37,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:22:37,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:22:37,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:22:37,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:22:37,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:22:37,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:22:37,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:22:37,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:22:37,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:22:37,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:22:37,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:22:37,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:22:37,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:22:37,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:22:37,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:22:37,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:22:37,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:22:37,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:22:37,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:22:37,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:22:37,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:22:37,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:22:37,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:22:37,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:22:37,556 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 04:22:37,604 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:22:37,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:22:37,606 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:22:37,606 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:22:37,607 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:22:37,607 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:22:37,607 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:22:37,607 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:22:37,614 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:22:37,614 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:22:37,615 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:22:37,615 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:22:37,616 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:22:37,616 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:22:37,616 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:22:37,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:22:37,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:22:37,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:22:37,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:22:37,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:22:37,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:22:37,618 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:22:37,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:22:37,619 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:22:37,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:22:37,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:22:37,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:22:37,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:22:37,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:22:37,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:22:37,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:22:37,622 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:22:37,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:22:37,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:22:37,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:22:37,623 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:22:37,624 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_386aa834-3a66-4f8c-b360-10f525ee3365/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de3da06dbfc8734cb93dce42b312357899e8d9cc914b94ba94740650fa2d8258 [2021-11-03 04:22:37,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:22:37,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:22:37,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:22:37,969 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:22:37,969 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:22:37,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i [2021-11-03 04:22:38,041 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/data/e1d0f7e42/670fc24cc20244f792d0e6fabba2d10e/FLAG3faaa2a93 [2021-11-03 04:22:38,874 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:22:38,875 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i [2021-11-03 04:22:38,913 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/data/e1d0f7e42/670fc24cc20244f792d0e6fabba2d10e/FLAG3faaa2a93 [2021-11-03 04:22:39,373 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/data/e1d0f7e42/670fc24cc20244f792d0e6fabba2d10e [2021-11-03 04:22:39,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:22:39,378 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:22:39,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:22:39,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:22:39,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:22:39,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:22:39" (1/1) ... [2021-11-03 04:22:39,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d5262d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:39, skipping insertion in model container [2021-11-03 04:22:39,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:22:39" (1/1) ... [2021-11-03 04:22:39,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:22:39,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:22:39,846 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_386aa834-3a66-4f8c-b360-10f525ee3365/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4494,4507] [2021-11-03 04:22:39,862 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_386aa834-3a66-4f8c-b360-10f525ee3365/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4554,4567] [2021-11-03 04:22:39,887 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:22:39,901 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:22:40,844 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:40,847 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:40,848 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:40,849 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:40,851 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:40,879 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:40,894 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:40,896 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:40,899 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:41,335 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:22:41,336 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:22:41,337 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:22:41,338 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:22:41,340 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:22:41,340 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:22:41,341 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:22:41,342 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:22:41,343 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:22:41,343 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:22:41,552 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:22:41,571 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-03 04:22:41,587 INFO L168 Benchmark]: Toolchain (without parser) took 2207.72 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 56.4 MB in the beginning and 98.5 MB in the end (delta: -42.1 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:22:41,589 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 100.7 MB. Free memory was 71.1 MB in the beginning and 71.0 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:22:41,591 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2205.20 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 56.2 MB in the beginning and 98.5 MB in the end (delta: -42.2 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:22:41,593 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 100.7 MB. Free memory was 71.1 MB in the beginning and 71.0 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2205.20 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 56.2 MB in the beginning and 98.5 MB in the end (delta: -42.2 MB). Peak memory consumption was 19.7 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_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/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_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/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_386aa834-3a66-4f8c-b360-10f525ee3365/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 de3da06dbfc8734cb93dce42b312357899e8d9cc914b94ba94740650fa2d8258 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:22:43,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:22:43,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:22:43,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:22:43,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:22:43,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:22:43,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:22:43,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:22:43,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:22:43,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:22:43,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:22:43,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:22:43,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:22:43,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:22:43,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:22:43,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:22:43,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:22:43,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:22:43,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:22:43,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:22:43,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:22:43,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:22:43,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:22:43,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:22:43,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:22:43,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:22:43,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:22:43,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:22:43,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:22:43,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:22:43,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:22:43,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:22:43,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:22:43,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:22:43,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:22:43,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:22:43,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:22:43,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:22:43,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:22:43,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:22:43,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:22:43,928 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 04:22:43,971 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:22:43,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:22:43,973 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:22:43,973 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:22:43,974 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:22:43,974 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:22:43,974 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:22:43,974 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:22:43,974 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:22:43,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:22:43,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:22:43,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:22:43,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:22:43,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:22:43,978 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:22:43,978 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:22:43,978 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:22:43,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:22:43,979 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:22:43,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:22:43,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:22:43,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:22:43,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:22:43,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:22:43,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:22:43,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:22:43,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:22:43,981 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:22:43,981 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:22:43,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:22:43,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:22:43,982 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:22:43,982 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_386aa834-3a66-4f8c-b360-10f525ee3365/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de3da06dbfc8734cb93dce42b312357899e8d9cc914b94ba94740650fa2d8258 [2021-11-03 04:22:44,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:22:44,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:22:44,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:22:44,359 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:22:44,360 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:22:44,361 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i [2021-11-03 04:22:44,435 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/data/82449a97d/4f31cb11e7a9414895a5b90e44ccbbaf/FLAG0f2705dbd [2021-11-03 04:22:45,508 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:22:45,511 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i [2021-11-03 04:22:45,569 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/data/82449a97d/4f31cb11e7a9414895a5b90e44ccbbaf/FLAG0f2705dbd [2021-11-03 04:22:45,585 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/data/82449a97d/4f31cb11e7a9414895a5b90e44ccbbaf [2021-11-03 04:22:45,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:22:45,590 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:22:45,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:22:45,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:22:45,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:22:45,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:22:45" (1/1) ... [2021-11-03 04:22:45,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37fe0804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:45, skipping insertion in model container [2021-11-03 04:22:45,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:22:45" (1/1) ... [2021-11-03 04:22:45,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:22:45,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:22:46,135 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_386aa834-3a66-4f8c-b360-10f525ee3365/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4494,4507] [2021-11-03 04:22:46,144 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_386aa834-3a66-4f8c-b360-10f525ee3365/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4554,4567] [2021-11-03 04:22:46,173 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:22:46,183 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:22:47,236 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:47,237 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:47,237 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:47,238 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:47,239 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:47,268 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:47,269 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:47,271 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:47,271 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:47,708 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:22:47,710 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:22:47,718 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:22:47,720 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:22:47,721 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:22:47,722 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:22:47,723 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:22:47,724 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:22:47,724 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:22:47,731 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:22:47,899 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:22:47,925 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:47,926 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,037 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,038 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:22:48,216 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:22:48,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:22:48,283 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_386aa834-3a66-4f8c-b360-10f525ee3365/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4494,4507] [2021-11-03 04:22:48,284 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_386aa834-3a66-4f8c-b360-10f525ee3365/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4554,4567] [2021-11-03 04:22:48,289 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:22:48,290 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:22:48,364 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,365 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,365 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,365 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,366 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,372 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,373 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,374 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,374 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,454 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:22:48,455 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:22:48,456 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:22:48,457 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:22:48,458 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:22:48,458 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:22:48,459 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:22:48,459 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:22:48,460 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:22:48,460 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:22:48,481 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:22:48,495 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,496 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,539 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,539 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:22:48,609 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:22:48,622 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_386aa834-3a66-4f8c-b360-10f525ee3365/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4494,4507] [2021-11-03 04:22:48,623 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_386aa834-3a66-4f8c-b360-10f525ee3365/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4554,4567] [2021-11-03 04:22:48,625 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:22:48,625 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:22:48,656 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,656 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,656 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,657 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,657 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,663 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,663 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,664 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,665 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,773 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:22:48,773 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:22:48,774 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:22:48,778 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:22:48,779 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:22:48,780 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:22:48,780 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:22:48,781 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:22:48,781 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:22:48,782 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:22:48,811 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:22:48,831 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,832 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,896 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,896 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:22:48,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:22:49,377 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:22:49,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:49 WrapperNode [2021-11-03 04:22:49,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:22:49,379 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:22:49,379 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:22:49,380 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:22:49,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:49" (1/1) ... [2021-11-03 04:22:49,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:49" (1/1) ... [2021-11-03 04:22:49,637 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:22:49,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:22:49,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:22:49,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:22:49,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:49" (1/1) ... [2021-11-03 04:22:49,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:49" (1/1) ... [2021-11-03 04:22:49,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:49" (1/1) ... [2021-11-03 04:22:49,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:49" (1/1) ... [2021-11-03 04:22:49,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:49" (1/1) ... [2021-11-03 04:22:49,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:49" (1/1) ... [2021-11-03 04:22:49,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:49" (1/1) ... [2021-11-03 04:22:49,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:22:49,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:22:49,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:22:49,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:22:49,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:49" (1/1) ... [2021-11-03 04:22:49,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:22:49,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:22:49,823 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:22:49,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:22:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:22:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:22:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 04:22:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-03 04:22:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:22:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:22:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:22:49,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:22:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:22:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 04:22:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:22:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:22:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 04:22:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 04:23:04,359 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:23:04,364 INFO L299 CfgBuilder]: Removed 102 assume(true) statements. [2021-11-03 04:23:04,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:23:04 BoogieIcfgContainer [2021-11-03 04:23:04,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:23:04,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:23:04,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:23:04,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:23:04,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:22:45" (1/3) ... [2021-11-03 04:23:04,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566eba09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:23:04, skipping insertion in model container [2021-11-03 04:23:04,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:49" (2/3) ... [2021-11-03 04:23:04,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566eba09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:23:04, skipping insertion in model container [2021-11-03 04:23:04,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:23:04" (3/3) ... [2021-11-03 04:23:04,377 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_reserve_harness.i [2021-11-03 04:23:04,383 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:23:04,384 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-03 04:23:04,442 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:23:04,454 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 04:23:04,455 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-03 04:23:04,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 190 states have (on average 1.4789473684210526) internal successors, (281), 200 states have internal predecessors, (281), 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 04:23:04,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-03 04:23:04,491 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:04,492 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] [2021-11-03 04:23:04,492 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:23:04,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:04,499 INFO L85 PathProgramCache]: Analyzing trace with hash -478674777, now seen corresponding path program 1 times [2021-11-03 04:23:04,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:04,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877260845] [2021-11-03 04:23:04,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:04,525 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:04,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:04,542 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:04,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:23:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:08,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:23:08,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:09,000 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 04:23:09,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:09,107 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 04:23:09,108 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:09,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877260845] [2021-11-03 04:23:09,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877260845] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:09,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:09,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:23:09,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521205577] [2021-11-03 04:23:09,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:23:09,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:09,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:23:09,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:23:09,131 INFO L87 Difference]: Start difference. First operand has 201 states, 190 states have (on average 1.4789473684210526) internal successors, (281), 200 states have internal predecessors, (281), 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 11.0) internal successors, (22), 2 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 04:23:09,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:09,164 INFO L93 Difference]: Finished difference Result 395 states and 553 transitions. [2021-11-03 04:23:09,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:23:09,166 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 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 22 [2021-11-03 04:23:09,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:09,177 INFO L225 Difference]: With dead ends: 395 [2021-11-03 04:23:09,177 INFO L226 Difference]: Without dead ends: 194 [2021-11-03 04:23:09,180 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 42 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 04:23:09,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-03 04:23:09,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2021-11-03 04:23:09,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 184 states have (on average 1.358695652173913) internal successors, (250), 193 states have internal predecessors, (250), 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 04:23:09,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 250 transitions. [2021-11-03 04:23:09,236 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 250 transitions. Word has length 22 [2021-11-03 04:23:09,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:09,236 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 250 transitions. [2021-11-03 04:23:09,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 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 04:23:09,237 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 250 transitions. [2021-11-03 04:23:09,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-03 04:23:09,238 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:09,240 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] [2021-11-03 04:23:09,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 04:23:09,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:09,463 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:23:09,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:09,464 INFO L85 PathProgramCache]: Analyzing trace with hash -2067022679, now seen corresponding path program 1 times [2021-11-03 04:23:09,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:09,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350094341] [2021-11-03 04:23:09,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:09,471 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:09,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:09,484 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:09,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:23:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:13,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:23:13,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:13,741 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 04:23:13,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:13,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:13,881 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:13,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350094341] [2021-11-03 04:23:13,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350094341] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:13,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:13,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:23:13,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487975490] [2021-11-03 04:23:13,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:23:13,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:13,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:23:13,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:23:13,884 INFO L87 Difference]: Start difference. First operand 194 states and 250 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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 04:23:14,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:14,296 INFO L93 Difference]: Finished difference Result 365 states and 469 transitions. [2021-11-03 04:23:14,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:23:14,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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 22 [2021-11-03 04:23:14,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:14,300 INFO L225 Difference]: With dead ends: 365 [2021-11-03 04:23:14,300 INFO L226 Difference]: Without dead ends: 194 [2021-11-03 04:23:14,301 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 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 04:23:14,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-03 04:23:14,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2021-11-03 04:23:14,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 184 states have (on average 1.3478260869565217) internal successors, (248), 193 states have internal predecessors, (248), 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 04:23:14,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 248 transitions. [2021-11-03 04:23:14,335 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 248 transitions. Word has length 22 [2021-11-03 04:23:14,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:14,335 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 248 transitions. [2021-11-03 04:23:14,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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 04:23:14,335 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 248 transitions. [2021-11-03 04:23:14,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-03 04:23:14,336 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:14,336 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, 1, 1, 1, 1] [2021-11-03 04:23:14,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:14,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:14,564 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:23:14,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:14,565 INFO L85 PathProgramCache]: Analyzing trace with hash 921090108, now seen corresponding path program 1 times [2021-11-03 04:23:14,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:14,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385738201] [2021-11-03 04:23:14,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:14,573 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:14,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:14,574 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:14,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:23:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:18,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 1751 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:23:18,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:18,759 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 04:23:18,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:18,875 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 04:23:18,875 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:18,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385738201] [2021-11-03 04:23:18,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385738201] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:18,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:18,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:23:18,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669239593] [2021-11-03 04:23:18,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:23:18,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:18,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:23:18,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:23:18,877 INFO L87 Difference]: Start difference. First operand 194 states and 248 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 04:23:19,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:19,336 INFO L93 Difference]: Finished difference Result 506 states and 665 transitions. [2021-11-03 04:23:19,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:23:19,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 28 [2021-11-03 04:23:19,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:19,341 INFO L225 Difference]: With dead ends: 506 [2021-11-03 04:23:19,341 INFO L226 Difference]: Without dead ends: 326 [2021-11-03 04:23:19,343 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 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 04:23:19,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-03 04:23:19,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 206. [2021-11-03 04:23:19,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 196 states have (on average 1.3265306122448979) internal successors, (260), 205 states have internal predecessors, (260), 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 04:23:19,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 260 transitions. [2021-11-03 04:23:19,362 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 260 transitions. Word has length 28 [2021-11-03 04:23:19,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:19,363 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 260 transitions. [2021-11-03 04:23:19,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 04:23:19,363 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 260 transitions. [2021-11-03 04:23:19,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-03 04:23:19,364 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:19,364 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, 1, 1, 1, 1] [2021-11-03 04:23:19,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:19,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:19,565 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:23:19,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:19,566 INFO L85 PathProgramCache]: Analyzing trace with hash -99978246, now seen corresponding path program 1 times [2021-11-03 04:23:19,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:19,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973443586] [2021-11-03 04:23:19,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:19,569 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:19,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:19,570 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:19,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:23:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:23,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 1748 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:23:23,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:23,742 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 04:23:23,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:23,853 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 04:23:23,853 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:23,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973443586] [2021-11-03 04:23:23,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973443586] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:23,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:23,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:23:23,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343701125] [2021-11-03 04:23:23,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:23:23,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:23,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:23:23,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:23:23,856 INFO L87 Difference]: Start difference. First operand 206 states and 260 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 04:23:24,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:24,771 INFO L93 Difference]: Finished difference Result 508 states and 657 transitions. [2021-11-03 04:23:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:23:24,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 28 [2021-11-03 04:23:24,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:24,774 INFO L225 Difference]: With dead ends: 508 [2021-11-03 04:23:24,775 INFO L226 Difference]: Without dead ends: 326 [2021-11-03 04:23:24,776 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:23:24,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-03 04:23:24,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 218. [2021-11-03 04:23:24,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 208 states have (on average 1.3076923076923077) internal successors, (272), 217 states have internal predecessors, (272), 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 04:23:24,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 272 transitions. [2021-11-03 04:23:24,795 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 272 transitions. Word has length 28 [2021-11-03 04:23:24,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:24,795 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 272 transitions. [2021-11-03 04:23:24,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 04:23:24,796 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 272 transitions. [2021-11-03 04:23:24,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-03 04:23:24,801 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:24,801 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, 1, 1, 1, 1] [2021-11-03 04:23:24,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-03 04:23:25,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:25,015 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:23:25,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:25,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1379732482, now seen corresponding path program 1 times [2021-11-03 04:23:25,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:25,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785326788] [2021-11-03 04:23:25,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:25,019 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:25,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:25,020 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:25,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:23:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:29,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 1753 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-03 04:23:29,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:29,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-03 04:23:29,653 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 04:23:29,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:29,899 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 40 treesize of output 34 [2021-11-03 04:23:30,166 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 04:23:30,166 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:30,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785326788] [2021-11-03 04:23:30,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785326788] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:30,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:30,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 12 [2021-11-03 04:23:30,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902909217] [2021-11-03 04:23:30,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:23:30,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:30,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:23:30,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:23:30,170 INFO L87 Difference]: Start difference. First operand 218 states and 272 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 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 04:23:37,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:37,381 INFO L93 Difference]: Finished difference Result 557 states and 692 transitions. [2021-11-03 04:23:37,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 04:23:37,383 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 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 28 [2021-11-03 04:23:37,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:37,386 INFO L225 Difference]: With dead ends: 557 [2021-11-03 04:23:37,386 INFO L226 Difference]: Without dead ends: 365 [2021-11-03 04:23:37,387 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2021-11-03 04:23:37,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-11-03 04:23:37,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 258. [2021-11-03 04:23:37,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 248 states have (on average 1.314516129032258) internal successors, (326), 257 states have internal predecessors, (326), 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 04:23:37,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 326 transitions. [2021-11-03 04:23:37,414 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 326 transitions. Word has length 28 [2021-11-03 04:23:37,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:37,415 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 326 transitions. [2021-11-03 04:23:37,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 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 04:23:37,415 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 326 transitions. [2021-11-03 04:23:37,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-03 04:23:37,417 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:37,417 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:37,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-03 04:23:37,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:37,631 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:23:37,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:37,631 INFO L85 PathProgramCache]: Analyzing trace with hash -153997134, now seen corresponding path program 1 times [2021-11-03 04:23:37,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:37,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631869483] [2021-11-03 04:23:37,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:37,635 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:37,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:37,636 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:37,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:23:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:41,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 1757 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:23:41,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:41,920 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 04:23:41,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:42,038 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 04:23:42,038 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:42,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631869483] [2021-11-03 04:23:42,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631869483] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:42,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:42,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-03 04:23:42,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019511244] [2021-11-03 04:23:42,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:23:42,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:42,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:23:42,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:23:42,041 INFO L87 Difference]: Start difference. First operand 258 states and 326 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 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 04:23:43,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:43,044 INFO L93 Difference]: Finished difference Result 627 states and 775 transitions. [2021-11-03 04:23:43,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:23:43,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 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 32 [2021-11-03 04:23:43,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:43,047 INFO L225 Difference]: With dead ends: 627 [2021-11-03 04:23:43,047 INFO L226 Difference]: Without dead ends: 392 [2021-11-03 04:23:43,048 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:23:43,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-11-03 04:23:43,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 258. [2021-11-03 04:23:43,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 248 states have (on average 1.310483870967742) internal successors, (325), 257 states have internal predecessors, (325), 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 04:23:43,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 325 transitions. [2021-11-03 04:23:43,062 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 325 transitions. Word has length 32 [2021-11-03 04:23:43,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:43,063 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 325 transitions. [2021-11-03 04:23:43,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 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 04:23:43,063 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 325 transitions. [2021-11-03 04:23:43,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 04:23:43,065 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:43,065 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:43,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:43,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:43,268 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:23:43,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:43,269 INFO L85 PathProgramCache]: Analyzing trace with hash 586659405, now seen corresponding path program 1 times [2021-11-03 04:23:43,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:43,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644249968] [2021-11-03 04:23:43,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:43,272 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:43,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:43,273 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:43,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:23:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:47,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 1761 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:23:47,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:47,458 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 04:23:47,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:47,593 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 04:23:47,594 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:47,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644249968] [2021-11-03 04:23:47,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644249968] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:47,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:47,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:23:47,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157520152] [2021-11-03 04:23:47,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:23:47,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:47,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:23:47,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:23:47,596 INFO L87 Difference]: Start difference. First operand 258 states and 325 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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 04:23:47,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:47,839 INFO L93 Difference]: Finished difference Result 522 states and 634 transitions. [2021-11-03 04:23:47,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:23:47,842 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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 34 [2021-11-03 04:23:47,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:47,845 INFO L225 Difference]: With dead ends: 522 [2021-11-03 04:23:47,845 INFO L226 Difference]: Without dead ends: 458 [2021-11-03 04:23:47,846 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:23:47,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-11-03 04:23:47,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 262. [2021-11-03 04:23:47,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 252 states have (on average 1.3055555555555556) internal successors, (329), 261 states have internal predecessors, (329), 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 04:23:47,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 329 transitions. [2021-11-03 04:23:47,863 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 329 transitions. Word has length 34 [2021-11-03 04:23:47,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:47,863 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 329 transitions. [2021-11-03 04:23:47,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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 04:23:47,864 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 329 transitions. [2021-11-03 04:23:47,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 04:23:47,866 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:47,866 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:47,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:48,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:48,079 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:23:48,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:48,079 INFO L85 PathProgramCache]: Analyzing trace with hash -53699786, now seen corresponding path program 1 times [2021-11-03 04:23:48,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:48,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81662307] [2021-11-03 04:23:48,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:48,083 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:48,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:48,084 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:48,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:23:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:52,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:23:52,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:52,458 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 04:23:52,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:52,734 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 04:23:52,734 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:52,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81662307] [2021-11-03 04:23:52,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81662307] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:52,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:52,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:23:52,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372015228] [2021-11-03 04:23:52,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:23:52,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:52,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:23:52,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:23:52,736 INFO L87 Difference]: Start difference. First operand 262 states and 329 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 04:23:53,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:53,178 INFO L93 Difference]: Finished difference Result 472 states and 593 transitions. [2021-11-03 04:23:53,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:23:53,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 42 [2021-11-03 04:23:53,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:53,181 INFO L225 Difference]: With dead ends: 472 [2021-11-03 04:23:53,181 INFO L226 Difference]: Without dead ends: 262 [2021-11-03 04:23:53,182 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:23:53,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-03 04:23:53,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2021-11-03 04:23:53,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 252 states have (on average 1.2857142857142858) internal successors, (324), 261 states have internal predecessors, (324), 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 04:23:53,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 324 transitions. [2021-11-03 04:23:53,196 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 324 transitions. Word has length 42 [2021-11-03 04:23:53,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:53,197 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 324 transitions. [2021-11-03 04:23:53,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 04:23:53,197 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 324 transitions. [2021-11-03 04:23:53,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-03 04:23:53,199 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:53,199 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, 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 04:23:53,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-03 04:23:53,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:53,414 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:23:53,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:53,414 INFO L85 PathProgramCache]: Analyzing trace with hash -629091549, now seen corresponding path program 1 times [2021-11-03 04:23:53,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:53,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454796034] [2021-11-03 04:23:53,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:53,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:53,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:53,419 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:53,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_386aa834-3a66-4f8c-b360-10f525ee3365/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:23:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:57,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 1790 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-03 04:23:57,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:58,663 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 04:23:58,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:24:08,950 WARN L207 SmtUtils]: Spent 9.29 s on a formula simplification. DAG size of input: 526 DAG size of output: 272 [2021-11-03 04:24:08,961 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-03 04:24:08,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 132 treesize of output 771