./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/memcpy_using_uint64_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_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/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_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/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_e685114f-86d0-4600-98e9-7eceac9ba2e7/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 d67b4b463cf9b59771b705723a66a102d698cbc5859334aa26ed48a8838f7285 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:21:14,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:21:14,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:21:14,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:21:14,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:21:14,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:21:14,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:21:14,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:21:14,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:21:14,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:21:14,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:21:14,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:21:14,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:21:14,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:21:14,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:21:14,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:21:14,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:21:14,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:21:14,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:21:14,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:21:14,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:21:14,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:21:14,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:21:14,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:21:14,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:21:14,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:21:14,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:21:14,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:21:14,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:21:14,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:21:14,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:21:14,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:21:14,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:21:14,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:21:14,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:21:14,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:21:14,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:21:14,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:21:14,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:21:14,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:21:14,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:21:14,903 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 04:21:14,952 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:21:14,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:21:14,956 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:21:14,956 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:21:14,957 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:21:14,957 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:21:14,957 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:21:14,957 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:21:14,964 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:21:14,964 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:21:14,965 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:21:14,965 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:21:14,965 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:21:14,966 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:21:14,966 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:21:14,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:21:14,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:21:14,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:21:14,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:21:14,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:21:14,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:21:14,968 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:21:14,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:21:14,968 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:21:14,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:21:14,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:21:14,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:21:14,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:21:14,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:21:14,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:21:14,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:21:14,971 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:21:14,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:21:14,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:21:14,972 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:21:14,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:21:14,972 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_e685114f-86d0-4600-98e9-7eceac9ba2e7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d67b4b463cf9b59771b705723a66a102d698cbc5859334aa26ed48a8838f7285 [2021-11-03 04:21:15,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:21:15,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:21:15,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:21:15,297 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:21:15,299 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:21:15,300 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i [2021-11-03 04:21:15,383 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/data/3259a4edb/6f723854b289413eb8265989c02118d3/FLAGd28ab50c5 [2021-11-03 04:21:16,094 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:21:16,096 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i [2021-11-03 04:21:16,133 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/data/3259a4edb/6f723854b289413eb8265989c02118d3/FLAGd28ab50c5 [2021-11-03 04:21:16,216 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/data/3259a4edb/6f723854b289413eb8265989c02118d3 [2021-11-03 04:21:16,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:21:16,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:21:16,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:21:16,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:21:16,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:21:16,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:21:16" (1/1) ... [2021-11-03 04:21:16,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d42f62c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:16, skipping insertion in model container [2021-11-03 04:21:16,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:21:16" (1/1) ... [2021-11-03 04:21:16,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:21:16,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:21:16,607 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_e685114f-86d0-4600-98e9-7eceac9ba2e7/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4531,4544] [2021-11-03 04:21:16,617 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_e685114f-86d0-4600-98e9-7eceac9ba2e7/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4591,4604] [2021-11-03 04:21:16,637 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:21:16,646 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:21:17,395 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:17,396 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:17,404 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:17,405 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:17,405 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:17,418 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:17,419 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:17,421 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:17,424 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:17,426 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:17,427 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:17,427 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:17,434 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:17,618 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:21:17,622 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:21:17,624 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:21:17,627 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:21:17,631 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:21:17,632 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:21:17,635 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:21:17,639 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:21:17,642 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:21:17,644 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:21:17,734 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-03 04:21:17,743 INFO L168 Benchmark]: Toolchain (without parser) took 1517.08 ms. Allocated memory is still 121.6 MB. Free memory was 83.1 MB in the beginning and 76.0 MB in the end (delta: 7.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-11-03 04:21:17,745 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 83.9 MB. Free memory was 40.6 MB in the beginning and 40.5 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:21:17,747 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1512.79 ms. Allocated memory is still 121.6 MB. Free memory was 82.8 MB in the beginning and 76.0 MB in the end (delta: 6.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-03 04:21:17,749 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 83.9 MB. Free memory was 40.6 MB in the beginning and 40.5 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1512.79 ms. Allocated memory is still 121.6 MB. Free memory was 82.8 MB in the beginning and 76.0 MB in the end (delta: 6.8 MB). Peak memory consumption was 16.8 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_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/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_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/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_e685114f-86d0-4600-98e9-7eceac9ba2e7/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 d67b4b463cf9b59771b705723a66a102d698cbc5859334aa26ed48a8838f7285 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:21:19,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:21:19,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:21:20,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:21:20,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:21:20,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:21:20,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:21:20,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:21:20,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:21:20,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:21:20,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:21:20,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:21:20,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:21:20,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:21:20,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:21:20,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:21:20,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:21:20,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:21:20,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:21:20,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:21:20,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:21:20,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:21:20,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:21:20,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:21:20,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:21:20,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:21:20,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:21:20,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:21:20,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:21:20,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:21:20,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:21:20,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:21:20,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:21:20,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:21:20,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:21:20,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:21:20,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:21:20,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:21:20,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:21:20,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:21:20,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:21:20,106 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 04:21:20,148 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:21:20,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:21:20,150 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:21:20,150 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:21:20,150 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:21:20,151 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:21:20,151 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:21:20,151 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:21:20,152 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:21:20,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:21:20,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:21:20,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:21:20,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:21:20,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:21:20,155 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:21:20,155 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:21:20,155 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:21:20,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:21:20,156 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:21:20,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:21:20,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:21:20,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:21:20,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:21:20,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:21:20,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:21:20,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:21:20,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:21:20,158 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:21:20,158 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:21:20,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:21:20,158 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:21:20,158 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:21:20,159 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_e685114f-86d0-4600-98e9-7eceac9ba2e7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d67b4b463cf9b59771b705723a66a102d698cbc5859334aa26ed48a8838f7285 [2021-11-03 04:21:20,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:21:20,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:21:20,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:21:20,603 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:21:20,603 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:21:20,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i [2021-11-03 04:21:20,672 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/data/2937b35ee/d5a450c62c2142af960d360f4367d751/FLAG9732a8d1a [2021-11-03 04:21:21,429 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:21:21,429 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i [2021-11-03 04:21:21,467 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/data/2937b35ee/d5a450c62c2142af960d360f4367d751/FLAG9732a8d1a [2021-11-03 04:21:21,524 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/data/2937b35ee/d5a450c62c2142af960d360f4367d751 [2021-11-03 04:21:21,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:21:21,528 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:21:21,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:21:21,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:21:21,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:21:21,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:21:21" (1/1) ... [2021-11-03 04:21:21,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20ce7f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:21, skipping insertion in model container [2021-11-03 04:21:21,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:21:21" (1/1) ... [2021-11-03 04:21:21,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:21:21,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:21:21,901 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_e685114f-86d0-4600-98e9-7eceac9ba2e7/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4531,4544] [2021-11-03 04:21:21,932 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_e685114f-86d0-4600-98e9-7eceac9ba2e7/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4591,4604] [2021-11-03 04:21:21,963 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:21:21,977 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:21:22,583 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:22,584 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:22,585 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:22,586 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:22,587 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:22,603 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:22,604 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:22,606 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:22,607 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:22,609 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:22,610 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:22,611 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:22,612 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:22,797 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:21:22,799 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:21:22,800 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:21:22,801 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:21:22,803 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:21:22,804 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:21:22,805 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:21:22,806 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:21:22,807 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:21:22,807 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:21:22,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:21:22,905 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:21:22,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:21:22,949 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_e685114f-86d0-4600-98e9-7eceac9ba2e7/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4531,4544] [2021-11-03 04:21:22,950 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_e685114f-86d0-4600-98e9-7eceac9ba2e7/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4591,4604] [2021-11-03 04:21:22,952 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:21:22,952 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:21:22,995 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:22,996 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:22,996 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:22,997 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:22,998 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:23,006 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:23,007 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:23,008 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:23,009 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:23,010 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:23,011 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:23,012 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:23,012 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:23,034 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:21:23,035 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:21:23,036 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:21:23,037 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:21:23,038 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:21:23,039 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:21:23,040 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:21:23,040 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:21:23,041 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:21:23,042 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:21:23,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:21:23,072 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:21:23,086 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_e685114f-86d0-4600-98e9-7eceac9ba2e7/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4531,4544] [2021-11-03 04:21:23,087 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_e685114f-86d0-4600-98e9-7eceac9ba2e7/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4591,4604] [2021-11-03 04:21:23,089 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:21:23,090 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:21:23,128 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:23,128 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:23,129 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:23,129 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:23,146 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:23,154 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:23,154 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:23,155 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:23,156 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:23,157 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:23,164 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:23,165 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:23,166 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:21:23,188 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:21:23,189 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:21:23,190 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:21:23,191 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:21:23,192 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:21:23,193 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:21:23,193 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:21:23,195 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:21:23,196 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:21:23,196 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:21:23,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:21:23,489 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:21:23,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:23 WrapperNode [2021-11-03 04:21:23,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:21:23,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:21:23,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:21:23,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:21:23,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:23" (1/1) ... [2021-11-03 04:21:23,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:23" (1/1) ... [2021-11-03 04:21:23,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:21:23,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:21:23,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:21:23,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:21:23,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:23" (1/1) ... [2021-11-03 04:21:23,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:23" (1/1) ... [2021-11-03 04:21:23,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:23" (1/1) ... [2021-11-03 04:21:23,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:23" (1/1) ... [2021-11-03 04:21:23,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:23" (1/1) ... [2021-11-03 04:21:23,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:23" (1/1) ... [2021-11-03 04:21:23,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:23" (1/1) ... [2021-11-03 04:21:23,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:21:23,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:21:23,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:21:23,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:21:23,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:23" (1/1) ... [2021-11-03 04:21:23,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:21:23,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:21:23,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:21:23,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:21:23,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:21:23,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:21:23,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:21:23,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:21:23,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:21:23,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 04:21:23,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:21:23,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 04:21:23,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 04:21:24,567 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:21:24,568 INFO L299 CfgBuilder]: Removed 37 assume(true) statements. [2021-11-03 04:21:24,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:21:24 BoogieIcfgContainer [2021-11-03 04:21:24,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:21:24,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:21:24,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:21:24,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:21:24,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:21:21" (1/3) ... [2021-11-03 04:21:24,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cec19fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:21:24, skipping insertion in model container [2021-11-03 04:21:24,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:23" (2/3) ... [2021-11-03 04:21:24,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cec19fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:21:24, skipping insertion in model container [2021-11-03 04:21:24,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:21:24" (3/3) ... [2021-11-03 04:21:24,578 INFO L111 eAbstractionObserver]: Analyzing ICFG memcpy_using_uint64_harness.i [2021-11-03 04:21:24,584 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:21:24,584 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-03 04:21:24,634 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:21:24,641 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 04:21:24,641 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-03 04:21:24,656 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 54 states have (on average 1.4814814814814814) internal successors, (80), 56 states have internal predecessors, (80), 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 04:21:24,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-03 04:21:24,663 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:24,663 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] [2021-11-03 04:21:24,664 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:21:24,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:24,670 INFO L85 PathProgramCache]: Analyzing trace with hash 696751054, now seen corresponding path program 1 times [2021-11-03 04:21:24,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:21:24,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646093638] [2021-11-03 04:21:24,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:24,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:21:24,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:21:24,688 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:21:24,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:21:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:24,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:21:24,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:25,071 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 04:21:25,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:25,270 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 04:21:25,271 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:21:25,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646093638] [2021-11-03 04:21:25,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646093638] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:25,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:25,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:21:25,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133019295] [2021-11-03 04:21:25,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:21:25,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:21:25,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:21:25,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:21:25,297 INFO L87 Difference]: Start difference. First operand has 57 states, 54 states have (on average 1.4814814814814814) internal successors, (80), 56 states have internal predecessors, (80), 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 20.0) internal successors, (40), 2 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 04:21:25,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:25,316 INFO L93 Difference]: Finished difference Result 110 states and 154 transitions. [2021-11-03 04:21:25,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:21:25,317 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 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 40 [2021-11-03 04:21:25,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:25,324 INFO L225 Difference]: With dead ends: 110 [2021-11-03 04:21:25,324 INFO L226 Difference]: Without dead ends: 51 [2021-11-03 04:21:25,327 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 78 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 04:21:25,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-03 04:21:25,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-03 04:21:25,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 50 states have internal predecessors, (60), 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 04:21:25,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2021-11-03 04:21:25,359 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 40 [2021-11-03 04:21:25,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:25,359 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2021-11-03 04:21:25,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 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 04:21:25,360 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2021-11-03 04:21:25,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-03 04:21:25,361 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:25,362 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] [2021-11-03 04:21:25,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:25,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:21:25,578 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:21:25,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:25,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1268023626, now seen corresponding path program 1 times [2021-11-03 04:21:25,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:21:25,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741048355] [2021-11-03 04:21:25,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:25,580 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:21:25,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:21:25,582 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:21:25,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:21:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:25,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:21:25,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:26,027 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 04:21:26,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:26,138 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 04:21:26,139 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:21:26,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741048355] [2021-11-03 04:21:26,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741048355] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:26,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:26,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:21:26,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517308327] [2021-11-03 04:21:26,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:21:26,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:21:26,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:21:26,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:21:26,147 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 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 04:21:26,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:26,199 INFO L93 Difference]: Finished difference Result 101 states and 120 transitions. [2021-11-03 04:21:26,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:21:26,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 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 40 [2021-11-03 04:21:26,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:26,204 INFO L225 Difference]: With dead ends: 101 [2021-11-03 04:21:26,204 INFO L226 Difference]: Without dead ends: 54 [2021-11-03 04:21:26,205 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:21:26,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-03 04:21:26,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-11-03 04:21:26,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 53 states have internal predecessors, (63), 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 04:21:26,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2021-11-03 04:21:26,218 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 40 [2021-11-03 04:21:26,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:26,219 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2021-11-03 04:21:26,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 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 04:21:26,220 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2021-11-03 04:21:26,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 04:21:26,224 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:26,224 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:26,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:26,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:21:26,445 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:21:26,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:26,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1187192526, now seen corresponding path program 1 times [2021-11-03 04:21:26,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:21:26,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006269723] [2021-11-03 04:21:26,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:26,447 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:21:26,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:21:26,449 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:21:26,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:21:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:26,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:21:26,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:26,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:26,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:27,047 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:21:27,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006269723] [2021-11-03 04:21:27,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1006269723] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:21:27,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2141590227] [2021-11-03 04:21:27,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:27,048 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:21:27,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:21:27,054 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:21:27,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-03 04:21:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:27,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:21:27,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:27,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 04:21:27,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:27,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 04:21:27,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2141590227] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:27,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:21:27,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 8] imperfect sequences [5, 5] total 14 [2021-11-03 04:21:27,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323488787] [2021-11-03 04:21:27,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:21:27,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:21:27,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:21:27,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:21:27,963 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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 04:21:28,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:28,132 INFO L93 Difference]: Finished difference Result 92 states and 112 transitions. [2021-11-03 04:21:28,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:21:28,133 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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 44 [2021-11-03 04:21:28,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:28,135 INFO L225 Difference]: With dead ends: 92 [2021-11-03 04:21:28,135 INFO L226 Difference]: Without dead ends: 67 [2021-11-03 04:21:28,135 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:21:28,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-03 04:21:28,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2021-11-03 04:21:28,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 64 states have (on average 1.171875) internal successors, (75), 65 states have internal predecessors, (75), 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 04:21:28,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2021-11-03 04:21:28,143 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 44 [2021-11-03 04:21:28,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:28,143 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2021-11-03 04:21:28,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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 04:21:28,144 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2021-11-03 04:21:28,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 04:21:28,145 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:28,145 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:28,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:28,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:28,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:21:28,565 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:21:28,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:28,566 INFO L85 PathProgramCache]: Analyzing trace with hash -587814836, now seen corresponding path program 1 times [2021-11-03 04:21:28,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:21:28,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112843699] [2021-11-03 04:21:28,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:28,567 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:21:28,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:21:28,569 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:21:28,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:21:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:28,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:21:28,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:28,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:28,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:29,104 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:21:29,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112843699] [2021-11-03 04:21:29,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112843699] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:21:29,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [728133718] [2021-11-03 04:21:29,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:29,105 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:21:29,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:21:29,106 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:21:29,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-03 04:21:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:29,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:21:29,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:29,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:29,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:29,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [728133718] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:21:29,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761598144] [2021-11-03 04:21:29,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:29,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:21:29,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:21:29,857 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:21:29,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-03 04:21:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:30,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:21:30,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:30,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 04:21:30,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:30,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 04:21:30,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761598144] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:30,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-03 04:21:30,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [5, 5, 5, 5] total 17 [2021-11-03 04:21:30,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244677009] [2021-11-03 04:21:30,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 04:21:30,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:21:30,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 04:21:30,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-11-03 04:21:30,897 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 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 04:21:31,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:31,682 INFO L93 Difference]: Finished difference Result 191 states and 216 transitions. [2021-11-03 04:21:31,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 04:21:31,685 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 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 44 [2021-11-03 04:21:31,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:31,687 INFO L225 Difference]: With dead ends: 191 [2021-11-03 04:21:31,687 INFO L226 Difference]: Without dead ends: 164 [2021-11-03 04:21:31,688 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2021-11-03 04:21:31,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-03 04:21:31,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 78. [2021-11-03 04:21:31,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 76 states have (on average 1.1710526315789473) internal successors, (89), 77 states have internal predecessors, (89), 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 04:21:31,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2021-11-03 04:21:31,699 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 44 [2021-11-03 04:21:31,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:31,700 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2021-11-03 04:21:31,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 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 04:21:31,700 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2021-11-03 04:21:31,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 04:21:31,701 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:31,701 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:31,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:31,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-03 04:21:32,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:32,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:21:32,306 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:21:32,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:32,306 INFO L85 PathProgramCache]: Analyzing trace with hash 2018208718, now seen corresponding path program 1 times [2021-11-03 04:21:32,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:21:32,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861118659] [2021-11-03 04:21:32,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:32,307 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:21:32,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:21:32,309 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:21:32,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:21:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:32,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:21:32,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:32,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:32,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:32,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:32,903 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:21:32,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861118659] [2021-11-03 04:21:32,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861118659] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:21:32,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [882803789] [2021-11-03 04:21:32,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:32,904 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:21:32,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:21:32,905 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:21:32,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-03 04:21:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:33,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:21:33,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:33,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:33,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:33,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:33,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [882803789] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:21:33,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935825574] [2021-11-03 04:21:33,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:33,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:21:33,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:21:33,641 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:21:33,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-03 04:21:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:33,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 04:21:33,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:34,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 04:21:34,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:34,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 04:21:34,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935825574] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:34,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-03 04:21:34,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [5, 5, 5, 5] total 21 [2021-11-03 04:21:34,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567165695] [2021-11-03 04:21:34,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 04:21:34,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:21:34,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 04:21:34,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-11-03 04:21:34,930 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 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 04:21:36,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:36,195 INFO L93 Difference]: Finished difference Result 176 states and 199 transitions. [2021-11-03 04:21:36,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 04:21:36,198 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 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 44 [2021-11-03 04:21:36,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:36,199 INFO L225 Difference]: With dead ends: 176 [2021-11-03 04:21:36,199 INFO L226 Difference]: Without dead ends: 151 [2021-11-03 04:21:36,201 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=185, Invalid=745, Unknown=0, NotChecked=0, Total=930 [2021-11-03 04:21:36,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-03 04:21:36,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 101. [2021-11-03 04:21:36,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 99 states have (on average 1.1313131313131313) internal successors, (112), 100 states have internal predecessors, (112), 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 04:21:36,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2021-11-03 04:21:36,214 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 44 [2021-11-03 04:21:36,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:36,214 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2021-11-03 04:21:36,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 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 04:21:36,215 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2021-11-03 04:21:36,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 04:21:36,216 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:36,216 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:36,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:36,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:36,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:36,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:21:36,837 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:21:36,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:36,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1719321434, now seen corresponding path program 1 times [2021-11-03 04:21:36,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:21:36,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406072089] [2021-11-03 04:21:36,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:36,838 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:21:36,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:21:36,840 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:21:36,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:21:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:37,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:21:37,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:37,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:37,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:37,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:37,486 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:21:37,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406072089] [2021-11-03 04:21:37,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406072089] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:21:37,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1143487054] [2021-11-03 04:21:37,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:37,487 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:21:37,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:21:37,489 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:21:37,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-03 04:21:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:38,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:21:38,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:38,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:38,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:38,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:38,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1143487054] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:21:38,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432123667] [2021-11-03 04:21:38,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:38,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:21:38,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:21:38,337 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:21:38,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-03 04:21:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:38,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:21:38,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:38,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:38,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:38,942 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:38,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432123667] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:21:38,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:21:38,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-11-03 04:21:38,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265845882] [2021-11-03 04:21:38,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:21:38,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:21:38,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:21:38,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:21:38,944 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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 04:21:39,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:39,085 INFO L93 Difference]: Finished difference Result 203 states and 228 transitions. [2021-11-03 04:21:39,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:21:39,086 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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 44 [2021-11-03 04:21:39,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:39,089 INFO L225 Difference]: With dead ends: 203 [2021-11-03 04:21:39,089 INFO L226 Difference]: Without dead ends: 109 [2021-11-03 04:21:39,090 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:21:39,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-03 04:21:39,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-03 04:21:39,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 107 states have (on average 1.1214953271028036) internal successors, (120), 108 states have internal predecessors, (120), 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 04:21:39,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 120 transitions. [2021-11-03 04:21:39,100 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 120 transitions. Word has length 44 [2021-11-03 04:21:39,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:39,101 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 120 transitions. [2021-11-03 04:21:39,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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 04:21:39,101 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 120 transitions. [2021-11-03 04:21:39,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 04:21:39,103 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:39,103 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 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 04:21:39,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:39,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:39,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:39,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:21:39,709 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:21:39,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:39,710 INFO L85 PathProgramCache]: Analyzing trace with hash 518117474, now seen corresponding path program 2 times [2021-11-03 04:21:39,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:21:39,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470534112] [2021-11-03 04:21:39,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:21:39,710 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:21:39,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:21:39,711 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:21:39,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:21:40,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-03 04:21:40,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:21:40,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:21:40,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:40,619 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-03 04:21:40,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:41,053 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-03 04:21:41,053 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:21:41,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470534112] [2021-11-03 04:21:41,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470534112] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:41,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:41,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:21:41,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847604498] [2021-11-03 04:21:41,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:21:41,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:21:41,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:21:41,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:21:41,056 INFO L87 Difference]: Start difference. First operand 109 states and 120 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 04:21:41,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:41,093 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2021-11-03 04:21:41,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:21:41,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 52 [2021-11-03 04:21:41,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:41,095 INFO L225 Difference]: With dead ends: 109 [2021-11-03 04:21:41,095 INFO L226 Difference]: Without dead ends: 107 [2021-11-03 04:21:41,095 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:21:41,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-03 04:21:41,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-11-03 04:21:41,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.1132075471698113) internal successors, (118), 106 states have internal predecessors, (118), 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 04:21:41,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2021-11-03 04:21:41,104 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 52 [2021-11-03 04:21:41,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:41,105 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2021-11-03 04:21:41,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 04:21:41,105 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2021-11-03 04:21:41,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 04:21:41,106 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:41,107 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 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 04:21:41,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:41,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:21:41,321 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:21:41,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:41,321 INFO L85 PathProgramCache]: Analyzing trace with hash 744003709, now seen corresponding path program 1 times [2021-11-03 04:21:41,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:21:41,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776966994] [2021-11-03 04:21:41,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:41,322 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:21:41,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:21:41,324 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:21:41,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 04:21:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:41,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:21:41,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:41,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:42,228 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:42,228 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:21:42,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776966994] [2021-11-03 04:21:42,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776966994] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:21:42,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1720640755] [2021-11-03 04:21:42,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:42,229 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:21:42,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:21:42,230 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:21:42,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-03 04:21:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:43,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:21:43,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:43,172 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:43,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:43,338 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:43,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1720640755] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:21:43,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799331781] [2021-11-03 04:21:43,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:43,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:21:43,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:21:43,345 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:21:43,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-03 04:21:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:43,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:21:43,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:44,275 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-03 04:21:44,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:44,583 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-03 04:21:44,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799331781] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:44,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-03 04:21:44,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [9, 9, 9, 9] total 23 [2021-11-03 04:21:44,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520495717] [2021-11-03 04:21:44,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 04:21:44,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:21:44,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 04:21:44,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2021-11-03 04:21:44,586 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 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 04:21:44,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:44,800 INFO L93 Difference]: Finished difference Result 120 states and 131 transitions. [2021-11-03 04:21:44,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:21:44,801 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 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 57 [2021-11-03 04:21:44,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:44,802 INFO L225 Difference]: With dead ends: 120 [2021-11-03 04:21:44,802 INFO L226 Difference]: Without dead ends: 86 [2021-11-03 04:21:44,803 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 314 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2021-11-03 04:21:44,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-03 04:21:44,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-11-03 04:21:44,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.1294117647058823) internal successors, (96), 85 states have internal predecessors, (96), 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 04:21:44,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2021-11-03 04:21:44,810 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 57 [2021-11-03 04:21:44,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:44,811 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2021-11-03 04:21:44,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 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 04:21:44,811 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2021-11-03 04:21:44,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 04:21:44,812 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:44,812 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 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 04:21:44,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:45,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:45,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:45,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:21:45,433 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:21:45,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:45,434 INFO L85 PathProgramCache]: Analyzing trace with hash -2070903995, now seen corresponding path program 1 times [2021-11-03 04:21:45,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:21:45,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254792302] [2021-11-03 04:21:45,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:45,435 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:21:45,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:21:45,435 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:21:45,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-03 04:21:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:46,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:21:46,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:46,298 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:21:46,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:46,588 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:21:46,588 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:21:46,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254792302] [2021-11-03 04:21:46,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254792302] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:21:46,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [91601483] [2021-11-03 04:21:46,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:46,589 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:21:46,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:21:46,590 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:21:46,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-03 04:21:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:47,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:21:47,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:47,590 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:21:47,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:47,765 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:21:47,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [91601483] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:21:47,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541615127] [2021-11-03 04:21:47,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:47,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:21:47,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:21:47,769 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:21:47,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-03 04:21:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:48,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 04:21:48,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:49,116 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-03 04:21:49,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:49,737 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-03 04:21:49,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541615127] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:21:49,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:21:49,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 10, 10] total 31 [2021-11-03 04:21:49,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41129542] [2021-11-03 04:21:49,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-03 04:21:49,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:21:49,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-03 04:21:49,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2021-11-03 04:21:49,740 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand has 31 states, 31 states have (on average 4.0) internal successors, (124), 31 states have internal predecessors, (124), 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 04:21:52,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:52,769 INFO L93 Difference]: Finished difference Result 249 states and 290 transitions. [2021-11-03 04:21:52,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-03 04:21:52,770 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.0) internal successors, (124), 31 states have internal predecessors, (124), 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 59 [2021-11-03 04:21:52,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:52,771 INFO L225 Difference]: With dead ends: 249 [2021-11-03 04:21:52,772 INFO L226 Difference]: Without dead ends: 178 [2021-11-03 04:21:52,773 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=373, Invalid=1883, Unknown=0, NotChecked=0, Total=2256 [2021-11-03 04:21:52,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-03 04:21:52,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 127. [2021-11-03 04:21:52,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.119047619047619) internal successors, (141), 126 states have internal predecessors, (141), 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 04:21:52,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 141 transitions. [2021-11-03 04:21:52,783 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 141 transitions. Word has length 59 [2021-11-03 04:21:52,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:52,783 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 141 transitions. [2021-11-03 04:21:52,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.0) internal successors, (124), 31 states have internal predecessors, (124), 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 04:21:52,784 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 141 transitions. [2021-11-03 04:21:52,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 04:21:52,785 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:52,786 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 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 04:21:52,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:53,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:53,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:53,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:21:53,397 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:21:53,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:53,398 INFO L85 PathProgramCache]: Analyzing trace with hash -936146453, now seen corresponding path program 1 times [2021-11-03 04:21:53,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:21:53,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830503270] [2021-11-03 04:21:53,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:53,399 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:21:53,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:21:53,400 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:21:53,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-03 04:21:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:53,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-03 04:21:53,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:54,276 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:21:54,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:55,063 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:21:55,063 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:21:55,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830503270] [2021-11-03 04:21:55,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830503270] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:21:55,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1920616425] [2021-11-03 04:21:55,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:55,064 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:21:55,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:21:55,065 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:21:55,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-03 04:21:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:56,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-03 04:21:56,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:56,190 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:21:56,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:56,392 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:21:56,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1920616425] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:21:56,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300569500] [2021-11-03 04:21:56,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:56,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:21:56,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:21:56,393 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:21:56,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-03 04:21:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:57,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-03 04:21:57,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:58,287 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-11-03 04:21:58,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:59,914 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-11-03 04:21:59,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300569500] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:21:59,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:21:59,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17, 17, 10, 12] total 50 [2021-11-03 04:21:59,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370784738] [2021-11-03 04:21:59,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-03 04:21:59,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:21:59,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-03 04:21:59,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=2100, Unknown=0, NotChecked=0, Total=2450 [2021-11-03 04:21:59,918 INFO L87 Difference]: Start difference. First operand 127 states and 141 transitions. Second operand has 50 states, 50 states have (on average 3.5) internal successors, (175), 50 states have internal predecessors, (175), 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 04:22:18,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:18,848 INFO L93 Difference]: Finished difference Result 271 states and 315 transitions. [2021-11-03 04:22:18,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-03 04:22:18,849 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.5) internal successors, (175), 50 states have internal predecessors, (175), 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 75 [2021-11-03 04:22:18,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:18,851 INFO L225 Difference]: With dead ends: 271 [2021-11-03 04:22:18,851 INFO L226 Difference]: Without dead ends: 175 [2021-11-03 04:22:18,854 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=914, Invalid=4342, Unknown=0, NotChecked=0, Total=5256 [2021-11-03 04:22:18,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-03 04:22:18,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 159. [2021-11-03 04:22:18,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.0949367088607596) internal successors, (173), 158 states have internal predecessors, (173), 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 04:22:18,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 173 transitions. [2021-11-03 04:22:18,864 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 173 transitions. Word has length 75 [2021-11-03 04:22:18,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:18,864 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 173 transitions. [2021-11-03 04:22:18,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.5) internal successors, (175), 50 states have internal predecessors, (175), 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 04:22:18,865 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 173 transitions. [2021-11-03 04:22:18,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-03 04:22:18,866 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:18,866 INFO L513 BasicCegarLoop]: trace histogram [30, 30, 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 04:22:18,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-03 04:22:19,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2021-11-03 04:22:19,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-11-03 04:22:19,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:22:19,480 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:22:19,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:19,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1044420365, now seen corresponding path program 1 times [2021-11-03 04:22:19,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:22:19,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250702011] [2021-11-03 04:22:19,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:19,481 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:22:19,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:22:19,482 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:22:19,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-03 04:22:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:20,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-03 04:22:20,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:20,941 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:22:20,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:24,056 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:22:24,056 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:22:24,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250702011] [2021-11-03 04:22:24,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250702011] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:22:24,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [562177721] [2021-11-03 04:22:24,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:24,057 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:22:24,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:22:24,057 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:22:24,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-03 04:22:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:25,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-03 04:22:25,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:25,633 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:22:25,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:25,972 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:22:25,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [562177721] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:22:25,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795813883] [2021-11-03 04:22:25,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:25,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:22:25,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:22:25,989 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:22:25,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-03 04:22:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:27,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-03 04:22:27,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:27,340 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:22:27,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:27,665 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:22:27,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795813883] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:22:27,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:22:27,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33, 33, 33, 33] total 64 [2021-11-03 04:22:27,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226553337] [2021-11-03 04:22:27,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-03 04:22:27,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:22:27,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-03 04:22:27,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1086, Invalid=2946, Unknown=0, NotChecked=0, Total=4032 [2021-11-03 04:22:27,669 INFO L87 Difference]: Start difference. First operand 159 states and 173 transitions. Second operand has 64 states, 64 states have (on average 2.640625) internal successors, (169), 64 states have internal predecessors, (169), 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 04:22:42,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:42,285 INFO L93 Difference]: Finished difference Result 319 states and 378 transitions. [2021-11-03 04:22:42,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-03 04:22:42,291 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.640625) internal successors, (169), 64 states have internal predecessors, (169), 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 107 [2021-11-03 04:22:42,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:42,292 INFO L225 Difference]: With dead ends: 319 [2021-11-03 04:22:42,292 INFO L226 Difference]: Without dead ends: 223 [2021-11-03 04:22:42,295 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=3006, Invalid=5736, Unknown=0, NotChecked=0, Total=8742 [2021-11-03 04:22:42,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-03 04:22:42,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2021-11-03 04:22:42,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.0675675675675675) internal successors, (237), 222 states have internal predecessors, (237), 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 04:22:42,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 237 transitions. [2021-11-03 04:22:42,307 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 237 transitions. Word has length 107 [2021-11-03 04:22:42,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:42,307 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 237 transitions. [2021-11-03 04:22:42,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.640625) internal successors, (169), 64 states have internal predecessors, (169), 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 04:22:42,308 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 237 transitions. [2021-11-03 04:22:42,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-03 04:22:42,309 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:42,310 INFO L513 BasicCegarLoop]: trace histogram [62, 62, 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 04:22:42,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-11-03 04:22:42,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-11-03 04:22:42,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2021-11-03 04:22:42,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:22:42,912 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:22:42,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:42,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1877293363, now seen corresponding path program 2 times [2021-11-03 04:22:42,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:22:42,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301978311] [2021-11-03 04:22:42,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:22:42,914 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:22:42,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:22:42,914 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:22:42,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-03 04:22:44,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:22:44,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:22:44,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-03 04:22:44,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:46,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3845 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:22:46,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:57,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3845 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:22:57,777 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:22:57,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301978311] [2021-11-03 04:22:57,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301978311] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:22:57,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [853649280] [2021-11-03 04:22:57,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:22:57,777 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:22:57,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:22:57,778 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:22:57,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-03 04:22:59,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:22:59,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:22:59,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-03 04:22:59,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:00,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3845 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:23:00,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:00,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3845 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:23:00,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [853649280] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:23:00,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122254180] [2021-11-03 04:23:00,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:23:00,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:23:00,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:23:00,589 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:23:00,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-03 04:23:01,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:23:01,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:23:01,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-03 04:23:01,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:02,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3845 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:23:02,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:03,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3845 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:23:03,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122254180] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:23:03,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:23:03,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65, 65, 65, 65] total 128 [2021-11-03 04:23:03,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804837888] [2021-11-03 04:23:03,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-11-03 04:23:03,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:03,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-11-03 04:23:03,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4222, Invalid=12034, Unknown=0, NotChecked=0, Total=16256 [2021-11-03 04:23:03,092 INFO L87 Difference]: Start difference. First operand 223 states and 237 transitions. Second operand has 128 states, 128 states have (on average 2.3203125) internal successors, (297), 128 states have internal predecessors, (297), 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 04:24:45,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:24:45,559 INFO L93 Difference]: Finished difference Result 447 states and 538 transitions. [2021-11-03 04:24:45,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-11-03 04:24:45,560 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 2.3203125) internal successors, (297), 128 states have internal predecessors, (297), 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 171 [2021-11-03 04:24:45,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:24:45,563 INFO L225 Difference]: With dead ends: 447 [2021-11-03 04:24:45,563 INFO L226 Difference]: Without dead ends: 351 [2021-11-03 04:24:45,572 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1082 GetRequests, 894 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 101.1s TimeCoverageRelationStatistics Valid=12158, Invalid=23752, Unknown=0, NotChecked=0, Total=35910 [2021-11-03 04:24:45,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-11-03 04:24:45,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2021-11-03 04:24:45,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.042857142857143) internal successors, (365), 350 states have internal predecessors, (365), 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 04:24:45,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 365 transitions. [2021-11-03 04:24:45,590 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 365 transitions. Word has length 171 [2021-11-03 04:24:45,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:24:45,590 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 365 transitions. [2021-11-03 04:24:45,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 2.3203125) internal successors, (297), 128 states have internal predecessors, (297), 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 04:24:45,591 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 365 transitions. [2021-11-03 04:24:45,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2021-11-03 04:24:45,595 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:24:45,596 INFO L513 BasicCegarLoop]: trace histogram [126, 126, 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 04:24:45,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-03 04:24:45,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2021-11-03 04:24:46,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-11-03 04:24:46,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:24:46,213 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:24:46,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:24:46,214 INFO L85 PathProgramCache]: Analyzing trace with hash 397747789, now seen corresponding path program 3 times [2021-11-03 04:24:46,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:24:46,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181549556] [2021-11-03 04:24:46,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:24:46,215 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:24:46,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:24:46,216 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:24:46,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-03 04:25:52,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 127 check-sat command(s) [2021-11-03 04:25:52,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:25:52,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 131 conjunts are in the unsatisfiable core [2021-11-03 04:25:52,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:00,512 INFO L134 CoverageAnalysis]: Checked inductivity of 15877 backedges. 0 proven. 15876 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:26:00,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:40,966 INFO L134 CoverageAnalysis]: Checked inductivity of 15877 backedges. 0 proven. 15876 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:26:40,966 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:40,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181549556] [2021-11-03 04:26:40,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1181549556] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:26:40,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1446146155] [2021-11-03 04:26:40,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:26:40,967 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:26:40,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:26:40,969 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:26:40,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e685114f-86d0-4600-98e9-7eceac9ba2e7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process