./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_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_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/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_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/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_957c6790-6535-4d4e-b4ab-dfdf85a91589/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 3bef4637cc296c755ba815d09f028f51f0bde7e0d2e6155f2b5c648b5201a193 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:39:23,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:39:23,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:39:23,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:39:23,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:39:23,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:39:23,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:39:23,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:39:23,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:39:23,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:39:23,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:39:23,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:39:23,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:39:23,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:39:23,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:39:23,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:39:23,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:39:23,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:39:23,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:39:23,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:39:23,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:39:23,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:39:23,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:39:23,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:39:23,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:39:23,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:39:23,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:39:23,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:39:23,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:39:23,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:39:23,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:39:23,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:39:23,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:39:23,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:39:23,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:39:23,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:39:23,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:39:23,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:39:23,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:39:23,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:39:23,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:39:23,914 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 04:39:23,960 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:39:23,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:39:23,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:39:23,962 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:39:23,962 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:39:23,962 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:39:23,963 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:39:23,963 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:39:23,969 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:39:23,969 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:39:23,970 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:39:23,970 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:39:23,971 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:39:23,971 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:39:23,971 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:39:23,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:39:23,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:39:23,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:39:23,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:39:23,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:39:23,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:39:23,973 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:39:23,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:39:23,974 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:39:23,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:39:23,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:39:23,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:39:23,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:39:23,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:39:23,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:39:23,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:39:23,977 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:39:23,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:39:23,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:39:23,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:39:23,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:39:23,978 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_957c6790-6535-4d4e-b4ab-dfdf85a91589/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bef4637cc296c755ba815d09f028f51f0bde7e0d2e6155f2b5c648b5201a193 [2021-11-03 04:39:24,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:39:24,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:39:24,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:39:24,246 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:39:24,248 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:39:24,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i [2021-11-03 04:39:24,319 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/data/ef5b23751/788a4d3a2f4c47afa801f5eb481b078f/FLAGfb83b8dc3 [2021-11-03 04:39:24,978 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:39:24,983 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i [2021-11-03 04:39:25,041 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/data/ef5b23751/788a4d3a2f4c47afa801f5eb481b078f/FLAGfb83b8dc3 [2021-11-03 04:39:25,124 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/data/ef5b23751/788a4d3a2f4c47afa801f5eb481b078f [2021-11-03 04:39:25,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:39:25,129 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:39:25,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:39:25,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:39:25,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:39:25,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:39:25" (1/1) ... [2021-11-03 04:39:25,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@357e1ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:25, skipping insertion in model container [2021-11-03 04:39:25,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:39:25" (1/1) ... [2021-11-03 04:39:25,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:39:25,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:39:25,531 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4496,4509] [2021-11-03 04:39:25,537 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_957c6790-6535-4d4e-b4ab-dfdf85a91589/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4556,4569] [2021-11-03 04:39:25,558 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:39:25,563 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:39:26,274 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:26,275 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:26,275 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:26,276 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:26,277 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:26,293 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:26,294 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:26,296 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:26,296 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:26,298 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:26,299 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:26,300 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:26,300 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:26,610 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:39:26,611 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:39:26,612 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:39:26,613 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:39:26,614 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:39:26,615 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:39:26,616 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:39:26,616 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:39:26,617 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:39:26,617 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:39:26,736 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:39:26,769 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-03 04:39:26,773 INFO L168 Benchmark]: Toolchain (without parser) took 1643.38 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 49.3 MB in the beginning and 80.4 MB in the end (delta: -31.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:39:26,774 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 90.2 MB. Free memory was 61.7 MB in the beginning and 61.6 MB in the end (delta: 26.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:39:26,775 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1638.98 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 49.2 MB in the beginning and 80.4 MB in the end (delta: -31.2 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:39:26,777 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 90.2 MB. Free memory was 61.7 MB in the beginning and 61.6 MB in the end (delta: 26.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1638.98 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 49.2 MB in the beginning and 80.4 MB in the end (delta: -31.2 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: IllegalArgumentException: byte size smaller than 1 makes no sense de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: IllegalArgumentException: byte size smaller than 1 makes no sense: de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.preferences.CACSLPreferenceInitializer$MemoryModel.getPreciseEnoughMemoryModelFor(CACSLPreferenceInitializer.java:194) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/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_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/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_957c6790-6535-4d4e-b4ab-dfdf85a91589/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 3bef4637cc296c755ba815d09f028f51f0bde7e0d2e6155f2b5c648b5201a193 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:39:29,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:39:29,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:39:29,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:39:29,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:39:29,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:39:29,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:39:29,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:39:29,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:39:29,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:39:29,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:39:29,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:39:29,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:39:29,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:39:29,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:39:29,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:39:29,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:39:29,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:39:29,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:39:29,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:39:29,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:39:29,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:39:29,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:39:29,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:39:29,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:39:29,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:39:29,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:39:29,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:39:29,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:39:29,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:39:29,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:39:29,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:39:29,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:39:29,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:39:29,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:39:29,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:39:29,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:39:29,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:39:29,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:39:29,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:39:29,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:39:29,092 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 04:39:29,136 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:39:29,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:39:29,137 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:39:29,138 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:39:29,138 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:39:29,138 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:39:29,138 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:39:29,138 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:39:29,139 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:39:29,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:39:29,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:39:29,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:39:29,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:39:29,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:39:29,140 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:39:29,140 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:39:29,140 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:39:29,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:39:29,141 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:39:29,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:39:29,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:39:29,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:39:29,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:39:29,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:39:29,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:39:29,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:39:29,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:39:29,143 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:39:29,143 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:39:29,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:39:29,145 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:39:29,145 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:39:29,146 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_957c6790-6535-4d4e-b4ab-dfdf85a91589/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bef4637cc296c755ba815d09f028f51f0bde7e0d2e6155f2b5c648b5201a193 [2021-11-03 04:39:29,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:39:29,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:39:29,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:39:29,579 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:39:29,579 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:39:29,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i [2021-11-03 04:39:29,646 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/data/31b05418a/c103c5eb263c4cc6994f34ebbcab150c/FLAG8cffa4c77 [2021-11-03 04:39:30,538 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:39:30,539 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i [2021-11-03 04:39:30,571 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/data/31b05418a/c103c5eb263c4cc6994f34ebbcab150c/FLAG8cffa4c77 [2021-11-03 04:39:30,977 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/data/31b05418a/c103c5eb263c4cc6994f34ebbcab150c [2021-11-03 04:39:30,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:39:30,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:39:30,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:39:30,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:39:30,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:39:30,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:39:30" (1/1) ... [2021-11-03 04:39:30,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19321178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:30, skipping insertion in model container [2021-11-03 04:39:30,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:39:30" (1/1) ... [2021-11-03 04:39:30,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:39:31,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:39:31,339 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_957c6790-6535-4d4e-b4ab-dfdf85a91589/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4496,4509] [2021-11-03 04:39:31,344 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_957c6790-6535-4d4e-b4ab-dfdf85a91589/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4556,4569] [2021-11-03 04:39:31,361 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:39:31,365 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:39:32,215 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:32,217 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:32,219 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:32,220 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:32,222 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:32,239 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:32,240 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:32,244 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:32,245 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:32,248 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:32,251 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:32,252 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:32,253 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:32,576 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:39:32,582 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:39:32,583 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:39:32,584 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:39:32,588 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:39:32,589 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:39:32,592 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:39:32,593 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:39:32,594 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:39:32,594 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:39:32,775 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:39:32,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:39:32,820 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:39:32,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:39:32,885 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_957c6790-6535-4d4e-b4ab-dfdf85a91589/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4496,4509] [2021-11-03 04:39:32,886 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_957c6790-6535-4d4e-b4ab-dfdf85a91589/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4556,4569] [2021-11-03 04:39:32,890 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:39:32,890 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:39:32,954 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:32,955 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:32,955 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:32,956 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:32,957 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:32,965 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:32,966 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:32,968 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:32,968 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:32,969 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:32,970 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:32,971 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:32,971 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:33,014 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:39:33,015 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:39:33,016 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:39:33,017 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:39:33,018 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:39:33,019 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:39:33,020 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:39:33,020 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:39:33,021 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:39:33,021 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:39:33,048 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:39:33,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:39:33,094 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:39:33,117 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_957c6790-6535-4d4e-b4ab-dfdf85a91589/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4496,4509] [2021-11-03 04:39:33,121 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_957c6790-6535-4d4e-b4ab-dfdf85a91589/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4556,4569] [2021-11-03 04:39:33,122 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:39:33,123 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:39:33,179 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:33,179 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:33,180 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:33,180 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:33,183 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:33,193 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:33,194 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:33,198 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:33,199 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:33,200 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:33,202 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:33,203 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:33,203 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:39:33,272 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:39:33,272 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:39:33,273 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:39:33,274 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:39:33,275 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:39:33,275 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:39:33,276 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:39:33,277 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:39:33,277 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:39:33,278 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:39:33,310 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:39:33,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:39:33,575 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:39:33,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:33 WrapperNode [2021-11-03 04:39:33,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:39:33,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:39:33,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:39:33,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:39:33,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:33" (1/1) ... [2021-11-03 04:39:33,695 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:33" (1/1) ... [2021-11-03 04:39:33,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:39:33,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:39:33,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:39:33,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:39:33,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:33" (1/1) ... [2021-11-03 04:39:33,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:33" (1/1) ... [2021-11-03 04:39:33,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:33" (1/1) ... [2021-11-03 04:39:33,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:33" (1/1) ... [2021-11-03 04:39:33,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:33" (1/1) ... [2021-11-03 04:39:33,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:33" (1/1) ... [2021-11-03 04:39:33,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:33" (1/1) ... [2021-11-03 04:39:33,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:39:33,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:39:33,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:39:33,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:39:33,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:33" (1/1) ... [2021-11-03 04:39:33,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:39:33,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:39:33,935 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:39:33,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:39:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:39:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:39:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:39:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:39:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:39:33,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:39:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:39:33,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:39:33,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 04:39:34,941 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:39:34,942 INFO L299 CfgBuilder]: Removed 55 assume(true) statements. [2021-11-03 04:39:34,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:39:34 BoogieIcfgContainer [2021-11-03 04:39:34,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:39:34,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:39:34,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:39:34,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:39:34,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:39:30" (1/3) ... [2021-11-03 04:39:34,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17eb839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:39:34, skipping insertion in model container [2021-11-03 04:39:34,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:33" (2/3) ... [2021-11-03 04:39:34,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17eb839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:39:34, skipping insertion in model container [2021-11-03 04:39:34,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:39:34" (3/3) ... [2021-11-03 04:39:34,957 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_rbegin_harness.i [2021-11-03 04:39:34,962 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:39:34,965 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-03 04:39:35,007 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:39:35,013 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 04:39:35,013 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-03 04:39:35,030 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 109 states have (on average 1.5596330275229358) internal successors, (170), 113 states have internal predecessors, (170), 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 04:39:35,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 04:39:35,037 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:35,037 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:35,038 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 04:39:35,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:35,044 INFO L85 PathProgramCache]: Analyzing trace with hash -122732205, now seen corresponding path program 1 times [2021-11-03 04:39:35,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:35,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123223307] [2021-11-03 04:39:35,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:35,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:35,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:35,062 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:35,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:39:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:35,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:39:35,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:35,452 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 04:39:35,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:35,611 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 04:39:35,612 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:35,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123223307] [2021-11-03 04:39:35,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123223307] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:35,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:35,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:39:35,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262544957] [2021-11-03 04:39:35,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:39:35,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:35,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:39:35,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:39:35,635 INFO L87 Difference]: Start difference. First operand has 114 states, 109 states have (on average 1.5596330275229358) internal successors, (170), 113 states have internal predecessors, (170), 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 20.5) internal successors, (41), 2 states have internal predecessors, (41), 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 04:39:35,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:35,660 INFO L93 Difference]: Finished difference Result 224 states and 335 transitions. [2021-11-03 04:39:35,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:39:35,661 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 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 41 [2021-11-03 04:39:35,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:35,670 INFO L225 Difference]: With dead ends: 224 [2021-11-03 04:39:35,670 INFO L226 Difference]: Without dead ends: 109 [2021-11-03 04:39:35,673 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 80 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 04:39:35,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-03 04:39:35,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-03 04:39:35,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.457142857142857) internal successors, (153), 108 states have internal predecessors, (153), 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 04:39:35,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 153 transitions. [2021-11-03 04:39:35,710 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 153 transitions. Word has length 41 [2021-11-03 04:39:35,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:35,710 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 153 transitions. [2021-11-03 04:39:35,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 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 04:39:35,711 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 153 transitions. [2021-11-03 04:39:35,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 04:39:35,713 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:35,713 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:35,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:35,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:35,929 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 04:39:35,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:35,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1738897517, now seen corresponding path program 1 times [2021-11-03 04:39:35,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:35,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142260468] [2021-11-03 04:39:35,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:35,931 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:35,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:35,934 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:35,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:39:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:36,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:39:36,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:36,368 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 04:39:36,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:36,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:36,508 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:36,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142260468] [2021-11-03 04:39:36,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142260468] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:36,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:36,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:39:36,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416070639] [2021-11-03 04:39:36,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:39:36,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:36,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:39:36,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:39:36,512 INFO L87 Difference]: Start difference. First operand 109 states and 153 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 04:39:36,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:36,613 INFO L93 Difference]: Finished difference Result 208 states and 294 transitions. [2021-11-03 04:39:36,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:39:36,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 41 [2021-11-03 04:39:36,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:36,615 INFO L225 Difference]: With dead ends: 208 [2021-11-03 04:39:36,616 INFO L226 Difference]: Without dead ends: 109 [2021-11-03 04:39:36,617 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:39:36,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-03 04:39:36,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-03 04:39:36,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.4285714285714286) internal successors, (150), 108 states have internal predecessors, (150), 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 04:39:36,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 150 transitions. [2021-11-03 04:39:36,627 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 150 transitions. Word has length 41 [2021-11-03 04:39:36,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:36,627 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 150 transitions. [2021-11-03 04:39:36,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 04:39:36,628 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 150 transitions. [2021-11-03 04:39:36,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 04:39:36,629 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:36,630 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:36,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:36,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:36,844 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 04:39:36,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:36,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1666510959, now seen corresponding path program 1 times [2021-11-03 04:39:36,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:36,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803326229] [2021-11-03 04:39:36,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:36,846 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:36,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:36,847 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:36,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:39:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:37,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:39:37,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:37,212 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 04:39:37,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:37,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:37,314 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:37,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803326229] [2021-11-03 04:39:37,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803326229] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:37,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:37,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:39:37,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135385872] [2021-11-03 04:39:37,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:39:37,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:37,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:39:37,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:39:37,317 INFO L87 Difference]: Start difference. First operand 109 states and 150 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 04:39:37,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:37,385 INFO L93 Difference]: Finished difference Result 210 states and 280 transitions. [2021-11-03 04:39:37,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:39:37,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 41 [2021-11-03 04:39:37,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:37,387 INFO L225 Difference]: With dead ends: 210 [2021-11-03 04:39:37,387 INFO L226 Difference]: Without dead ends: 127 [2021-11-03 04:39:37,387 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:39:37,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-03 04:39:37,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 109. [2021-11-03 04:39:37,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.4095238095238096) internal successors, (148), 108 states have internal predecessors, (148), 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 04:39:37,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 148 transitions. [2021-11-03 04:39:37,397 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 148 transitions. Word has length 41 [2021-11-03 04:39:37,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:37,397 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 148 transitions. [2021-11-03 04:39:37,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 04:39:37,397 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 148 transitions. [2021-11-03 04:39:37,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-03 04:39:37,399 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:37,399 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:37,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:37,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:37,620 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 04:39:37,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:37,620 INFO L85 PathProgramCache]: Analyzing trace with hash -423042159, now seen corresponding path program 1 times [2021-11-03 04:39:37,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:37,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672655449] [2021-11-03 04:39:37,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:37,622 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:37,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:37,623 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:37,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:39:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:37,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:39:37,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:38,159 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 04:39:38,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:38,335 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 04:39:38,336 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:38,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672655449] [2021-11-03 04:39:38,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672655449] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:38,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:38,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:39:38,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543068858] [2021-11-03 04:39:38,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:39:38,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:38,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:39:38,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:39:38,340 INFO L87 Difference]: Start difference. First operand 109 states and 148 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 04:39:38,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:38,538 INFO L93 Difference]: Finished difference Result 217 states and 288 transitions. [2021-11-03 04:39:38,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:39:38,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 45 [2021-11-03 04:39:38,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:38,540 INFO L225 Difference]: With dead ends: 217 [2021-11-03 04:39:38,541 INFO L226 Difference]: Without dead ends: 135 [2021-11-03 04:39:38,541 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:39:38,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-03 04:39:38,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109. [2021-11-03 04:39:38,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.380952380952381) internal successors, (145), 108 states have internal predecessors, (145), 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 04:39:38,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 145 transitions. [2021-11-03 04:39:38,558 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 145 transitions. Word has length 45 [2021-11-03 04:39:38,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:38,558 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 145 transitions. [2021-11-03 04:39:38,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 04:39:38,559 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 145 transitions. [2021-11-03 04:39:38,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 04:39:38,561 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:38,562 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:38,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:38,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:38,775 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 04:39:38,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:38,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2072078671, now seen corresponding path program 1 times [2021-11-03 04:39:38,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:38,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886915520] [2021-11-03 04:39:38,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:38,777 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:38,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:38,779 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:38,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:39:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:39,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:39:39,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:39,236 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 04:39:39,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:39,374 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 04:39:39,374 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:39,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886915520] [2021-11-03 04:39:39,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886915520] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:39,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:39,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-03 04:39:39,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239416373] [2021-11-03 04:39:39,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:39:39,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:39,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:39:39,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:39:39,376 INFO L87 Difference]: Start difference. First operand 109 states and 145 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 04:39:39,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:39,736 INFO L93 Difference]: Finished difference Result 296 states and 388 transitions. [2021-11-03 04:39:39,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:39:39,737 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 49 [2021-11-03 04:39:39,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:39,738 INFO L225 Difference]: With dead ends: 296 [2021-11-03 04:39:39,738 INFO L226 Difference]: Without dead ends: 213 [2021-11-03 04:39:39,739 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:39:39,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-03 04:39:39,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 112. [2021-11-03 04:39:39,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 108 states have (on average 1.3703703703703705) internal successors, (148), 111 states have internal predecessors, (148), 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 04:39:39,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 148 transitions. [2021-11-03 04:39:39,769 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 148 transitions. Word has length 49 [2021-11-03 04:39:39,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:39,769 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 148 transitions. [2021-11-03 04:39:39,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 04:39:39,769 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 148 transitions. [2021-11-03 04:39:39,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 04:39:39,770 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:39,771 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:39,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:39,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:39,971 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 04:39:39,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:39,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1006498608, now seen corresponding path program 1 times [2021-11-03 04:39:39,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:39,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2117081858] [2021-11-03 04:39:39,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:39,973 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:39,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:39,974 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:39,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:39:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:40,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:39:40,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:40,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:40,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:40,609 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 04:39:40,609 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:40,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2117081858] [2021-11-03 04:39:40,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2117081858] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:40,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:40,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 3] imperfect sequences [] total 7 [2021-11-03 04:39:40,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255968228] [2021-11-03 04:39:40,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:39:40,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:40,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:39:40,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:39:40,612 INFO L87 Difference]: Start difference. First operand 112 states and 148 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:41,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:41,066 INFO L93 Difference]: Finished difference Result 335 states and 432 transitions. [2021-11-03 04:39:41,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:39:41,067 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-03 04:39:41,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:41,070 INFO L225 Difference]: With dead ends: 335 [2021-11-03 04:39:41,070 INFO L226 Difference]: Without dead ends: 250 [2021-11-03 04:39:41,070 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:39:41,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-03 04:39:41,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 117. [2021-11-03 04:39:41,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 113 states have (on average 1.3628318584070795) internal successors, (154), 116 states have internal predecessors, (154), 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 04:39:41,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 154 transitions. [2021-11-03 04:39:41,083 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 154 transitions. Word has length 51 [2021-11-03 04:39:41,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:41,083 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 154 transitions. [2021-11-03 04:39:41,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:41,084 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 154 transitions. [2021-11-03 04:39:41,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 04:39:41,085 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:41,085 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:41,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-03 04:39:41,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:41,300 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 04:39:41,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:41,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1179077135, now seen corresponding path program 1 times [2021-11-03 04:39:41,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:41,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66913144] [2021-11-03 04:39:41,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:41,301 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:41,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:41,302 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:41,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:39:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:41,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 04:39:41,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:41,852 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 04:39:41,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:42,007 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 04:39:42,008 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:42,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66913144] [2021-11-03 04:39:42,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66913144] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:42,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:42,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-03 04:39:42,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914252179] [2021-11-03 04:39:42,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:39:42,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:42,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:39:42,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:39:42,011 INFO L87 Difference]: Start difference. First operand 117 states and 154 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:42,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:42,450 INFO L93 Difference]: Finished difference Result 312 states and 405 transitions. [2021-11-03 04:39:42,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:39:42,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-03 04:39:42,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:42,453 INFO L225 Difference]: With dead ends: 312 [2021-11-03 04:39:42,453 INFO L226 Difference]: Without dead ends: 215 [2021-11-03 04:39:42,453 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:39:42,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-03 04:39:42,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 120. [2021-11-03 04:39:42,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.353448275862069) internal successors, (157), 119 states have internal predecessors, (157), 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 04:39:42,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2021-11-03 04:39:42,462 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 61 [2021-11-03 04:39:42,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:42,463 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2021-11-03 04:39:42,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:42,463 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2021-11-03 04:39:42,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 04:39:42,464 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:42,464 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:42,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:42,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:42,688 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 04:39:42,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:42,688 INFO L85 PathProgramCache]: Analyzing trace with hash 930930641, now seen corresponding path program 1 times [2021-11-03 04:39:42,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:42,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520375970] [2021-11-03 04:39:42,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:42,690 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:42,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:42,691 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:42,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:39:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:43,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:39:43,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:43,275 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 04:39:43,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:43,410 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 04:39:43,410 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:43,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520375970] [2021-11-03 04:39:43,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520375970] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:43,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:43,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:39:43,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603351590] [2021-11-03 04:39:43,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:39:43,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:43,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:39:43,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:39:43,412 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:43,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:43,514 INFO L93 Difference]: Finished difference Result 259 states and 326 transitions. [2021-11-03 04:39:43,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:39:43,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-03 04:39:43,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:43,516 INFO L225 Difference]: With dead ends: 259 [2021-11-03 04:39:43,516 INFO L226 Difference]: Without dead ends: 166 [2021-11-03 04:39:43,516 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:39:43,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-03 04:39:43,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 120. [2021-11-03 04:39:43,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.3362068965517242) internal successors, (155), 119 states have internal predecessors, (155), 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 04:39:43,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 155 transitions. [2021-11-03 04:39:43,524 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 155 transitions. Word has length 61 [2021-11-03 04:39:43,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:43,525 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 155 transitions. [2021-11-03 04:39:43,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:43,525 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 155 transitions. [2021-11-03 04:39:43,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-03 04:39:43,527 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:43,528 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:43,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:43,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:43,747 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 04:39:43,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:43,747 INFO L85 PathProgramCache]: Analyzing trace with hash -961072015, now seen corresponding path program 1 times [2021-11-03 04:39:43,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:43,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216701145] [2021-11-03 04:39:43,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:43,748 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:43,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:43,749 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:43,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:39:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:44,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-03 04:39:44,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:44,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2021-11-03 04:39:44,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-03 04:39:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:39:44,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:44,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:39:45,000 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:45,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216701145] [2021-11-03 04:39:45,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216701145] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:39:45,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [531857432] [2021-11-03 04:39:45,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:45,000 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:39:45,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:39:45,003 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:39:45,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-03 04:39:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:45,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:39:45,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:45,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:39:45,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:39:45,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [531857432] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:45,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:39:45,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [8, 8] total 14 [2021-11-03 04:39:45,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053840948] [2021-11-03 04:39:45,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:39:45,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:45,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:39:45,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:39:45,943 INFO L87 Difference]: Start difference. First operand 120 states and 155 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 04:39:46,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:46,137 INFO L93 Difference]: Finished difference Result 290 states and 357 transitions. [2021-11-03 04:39:46,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:39:46,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 65 [2021-11-03 04:39:46,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:46,139 INFO L225 Difference]: With dead ends: 290 [2021-11-03 04:39:46,139 INFO L226 Difference]: Without dead ends: 195 [2021-11-03 04:39:46,140 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:39:46,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-03 04:39:46,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 120. [2021-11-03 04:39:46,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.3189655172413792) internal successors, (153), 119 states have internal predecessors, (153), 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 04:39:46,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 153 transitions. [2021-11-03 04:39:46,156 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 153 transitions. Word has length 65 [2021-11-03 04:39:46,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:46,157 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 153 transitions. [2021-11-03 04:39:46,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 04:39:46,157 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 153 transitions. [2021-11-03 04:39:46,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 04:39:46,159 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:46,159 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, 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 04:39:46,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:46,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:46,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:39:46,576 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 04:39:46,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:46,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1164925684, now seen corresponding path program 1 times [2021-11-03 04:39:46,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:46,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890244141] [2021-11-03 04:39:46,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:46,577 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:46,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:46,578 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:46,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:39:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:47,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-03 04:39:47,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:48,036 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 04:39:48,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:50,903 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:39:50,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-03 04:39:50,937 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-03 04:39:50,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-03 04:39:51,154 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 04:39:51,154 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:51,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890244141] [2021-11-03 04:39:51,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890244141] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:51,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:51,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 14 [2021-11-03 04:39:51,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293949943] [2021-11-03 04:39:51,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 04:39:51,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:51,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 04:39:51,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:39:51,172 INFO L87 Difference]: Start difference. First operand 120 states and 153 transitions. Second operand has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 14 states have internal predecessors, (125), 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 04:39:52,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:52,294 INFO L93 Difference]: Finished difference Result 164 states and 207 transitions. [2021-11-03 04:39:52,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 04:39:52,295 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 14 states have internal predecessors, (125), 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 67 [2021-11-03 04:39:52,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:52,297 INFO L225 Difference]: With dead ends: 164 [2021-11-03 04:39:52,297 INFO L226 Difference]: Without dead ends: 124 [2021-11-03 04:39:52,297 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2021-11-03 04:39:52,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-03 04:39:52,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2021-11-03 04:39:52,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 118 states have (on average 1.3135593220338984) internal successors, (155), 121 states have internal predecessors, (155), 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 04:39:52,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 155 transitions. [2021-11-03 04:39:52,309 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 155 transitions. Word has length 67 [2021-11-03 04:39:52,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:52,309 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 155 transitions. [2021-11-03 04:39:52,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 14 states have internal predecessors, (125), 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 04:39:52,310 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 155 transitions. [2021-11-03 04:39:52,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 04:39:52,310 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:52,311 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, 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 04:39:52,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:52,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:52,527 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 04:39:52,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:52,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1166772726, now seen corresponding path program 1 times [2021-11-03 04:39:52,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:52,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474603013] [2021-11-03 04:39:52,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:52,528 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:52,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:52,529 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:52,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:39:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:53,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-03 04:39:53,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:53,279 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-03 04:39:53,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2021-11-03 04:39:54,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2021-11-03 04:39:54,203 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 04:39:54,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:54,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 90 [2021-11-03 04:39:54,910 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 04:39:54,910 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:54,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474603013] [2021-11-03 04:39:54,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474603013] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:54,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:54,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2021-11-03 04:39:54,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316592609] [2021-11-03 04:39:54,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 04:39:54,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:54,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 04:39:54,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:39:54,912 INFO L87 Difference]: Start difference. First operand 122 states and 155 transitions. Second operand has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 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 04:39:57,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:57,096 INFO L93 Difference]: Finished difference Result 368 states and 471 transitions. [2021-11-03 04:39:57,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 04:39:57,097 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 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 67 [2021-11-03 04:39:57,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:57,099 INFO L225 Difference]: With dead ends: 368 [2021-11-03 04:39:57,099 INFO L226 Difference]: Without dead ends: 262 [2021-11-03 04:39:57,100 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=250, Invalid=562, Unknown=0, NotChecked=0, Total=812 [2021-11-03 04:39:57,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-03 04:39:57,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 130. [2021-11-03 04:39:57,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 126 states have (on average 1.2936507936507937) internal successors, (163), 129 states have internal predecessors, (163), 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 04:39:57,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 163 transitions. [2021-11-03 04:39:57,114 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 163 transitions. Word has length 67 [2021-11-03 04:39:57,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:57,115 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 163 transitions. [2021-11-03 04:39:57,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 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 04:39:57,115 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 163 transitions. [2021-11-03 04:39:57,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 04:39:57,116 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:57,116 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, 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 04:39:57,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:57,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:57,332 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 04:39:57,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:57,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1353187208, now seen corresponding path program 1 times [2021-11-03 04:39:57,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:57,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029110500] [2021-11-03 04:39:57,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:57,333 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:57,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:57,334 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:57,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:39:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:57,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-03 04:39:57,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:59,011 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 04:39:59,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:01,867 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:40:01,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-03 04:40:01,893 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-03 04:40:01,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-03 04:40:01,968 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 04:40:01,968 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:01,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029110500] [2021-11-03 04:40:01,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029110500] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:01,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:01,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 17 [2021-11-03 04:40:01,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314691305] [2021-11-03 04:40:01,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:40:01,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:01,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:40:01,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-11-03 04:40:01,971 INFO L87 Difference]: Start difference. First operand 130 states and 163 transitions. Second operand has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 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 04:40:04,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:04,395 INFO L93 Difference]: Finished difference Result 461 states and 584 transitions. [2021-11-03 04:40:04,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-03 04:40:04,396 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 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 67 [2021-11-03 04:40:04,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:04,398 INFO L225 Difference]: With dead ends: 461 [2021-11-03 04:40:04,398 INFO L226 Difference]: Without dead ends: 374 [2021-11-03 04:40:04,399 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=296, Invalid=760, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 04:40:04,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-03 04:40:04,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 239. [2021-11-03 04:40:04,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 235 states have (on average 1.2893617021276595) internal successors, (303), 238 states have internal predecessors, (303), 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 04:40:04,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 303 transitions. [2021-11-03 04:40:04,423 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 303 transitions. Word has length 67 [2021-11-03 04:40:04,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:04,424 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 303 transitions. [2021-11-03 04:40:04,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 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 04:40:04,424 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 303 transitions. [2021-11-03 04:40:04,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 04:40:04,425 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:04,425 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, 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 04:40:04,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:04,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:04,635 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 04:40:04,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:04,636 INFO L85 PathProgramCache]: Analyzing trace with hash -673128838, now seen corresponding path program 1 times [2021-11-03 04:40:04,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:04,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074692197] [2021-11-03 04:40:04,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:04,637 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:04,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:04,638 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:04,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:40:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:05,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-03 04:40:05,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:05,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2021-11-03 04:40:06,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:40:06,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:06,311 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:40:06,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 20 [2021-11-03 04:40:06,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:40:06,547 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:06,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074692197] [2021-11-03 04:40:06,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074692197] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:40:06,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [102856820] [2021-11-03 04:40:06,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:06,548 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:40:06,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:40:06,549 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:40:06,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-03 04:40:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:07,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-03 04:40:07,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:07,676 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-03 04:40:07,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2021-11-03 04:40:12,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:40:12,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:13,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 169 [2021-11-03 04:40:13,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:40:13,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [102856820] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:40:13,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741758179] [2021-11-03 04:40:13,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:13,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:40:13,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:40:13,636 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:40:13,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957c6790-6535-4d4e-b4ab-dfdf85a91589/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-03 04:40:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:14,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-03 04:40:14,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:14,684 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-03 04:40:14,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 17 [2021-11-03 04:40:31,793 INFO L354 Elim1Store]: treesize reduction 27, result has 27.0 percent of original size [2021-11-03 04:40:31,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 45 [2021-11-03 04:40:31,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:40:31,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:32,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 349 treesize of output 333 [2021-11-03 04:40:33,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:40:33,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741758179] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:40:33,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:40:33,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13, 13, 13, 13] total 48 [2021-11-03 04:40:33,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046630412] [2021-11-03 04:40:33,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-03 04:40:33,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:33,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-03 04:40:33,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2056, Unknown=4, NotChecked=0, Total=2256 [2021-11-03 04:40:33,138 INFO L87 Difference]: Start difference. First operand 239 states and 303 transitions. Second operand has 48 states, 48 states have (on average 6.041666666666667) internal successors, (290), 48 states have internal predecessors, (290), 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 04:40:59,887 WARN L207 SmtUtils]: Spent 5.06 s on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-11-03 04:41:51,237 WARN L207 SmtUtils]: Spent 9.68 s on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2021-11-03 04:42:15,006 WARN L207 SmtUtils]: Spent 9.32 s on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2021-11-03 04:42:23,366 WARN L207 SmtUtils]: Spent 8.18 s on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2021-11-03 04:42:58,721 WARN L207 SmtUtils]: Spent 16.87 s on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2021-11-03 04:43:07,120 WARN L207 SmtUtils]: Spent 8.19 s on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2021-11-03 04:43:29,204 WARN L207 SmtUtils]: Spent 14.27 s on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2021-11-03 04:43:59,300 WARN L207 SmtUtils]: Spent 18.77 s on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2021-11-03 04:44:16,264 WARN L207 SmtUtils]: Spent 8.17 s on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2021-11-03 04:44:27,004 WARN L207 SmtUtils]: Spent 8.24 s on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2021-11-03 04:44:59,414 WARN L207 SmtUtils]: Spent 17.07 s on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2021-11-03 04:45:24,116 WARN L207 SmtUtils]: Spent 19.29 s on a formula simplification. DAG size of input: 97 DAG size of output: 77 [2021-11-03 04:45:34,154 WARN L207 SmtUtils]: Spent 8.22 s on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2021-11-03 04:45:43,120 WARN L207 SmtUtils]: Spent 8.30 s on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2021-11-03 04:46:03,453 WARN L207 SmtUtils]: Spent 19.81 s on a formula simplification that was a NOOP. DAG size: 96 [2021-11-03 04:46:33,336 WARN L207 SmtUtils]: Spent 28.71 s on a formula simplification that was a NOOP. DAG size: 97 [2021-11-03 04:46:39,812 WARN L207 SmtUtils]: Spent 6.15 s on a formula simplification that was a NOOP. DAG size: 54 [2021-11-03 04:46:58,801 WARN L207 SmtUtils]: Spent 8.16 s on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2021-11-03 04:47:05,579 WARN L207 SmtUtils]: Spent 6.16 s on a formula simplification that was a NOOP. DAG size: 55 [2021-11-03 04:47:45,988 WARN L207 SmtUtils]: Spent 17.03 s on a formula simplification that was a NOOP. DAG size: 84 [2021-11-03 04:48:10,340 WARN L207 SmtUtils]: Spent 19.77 s on a formula simplification that was a NOOP. DAG size: 92 [2021-11-03 04:48:34,443 WARN L207 SmtUtils]: Spent 17.03 s on a formula simplification that was a NOOP. DAG size: 95 [2021-11-03 04:49:00,840 WARN L207 SmtUtils]: Spent 17.02 s on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2021-11-03 04:49:17,559 WARN L207 SmtUtils]: Spent 14.00 s on a formula simplification that was a NOOP. DAG size: 93 [2021-11-03 04:49:28,498 WARN L207 SmtUtils]: Spent 6.12 s on a formula simplification that was a NOOP. DAG size: 45 [2021-11-03 04:49:38,883 WARN L207 SmtUtils]: Spent 6.12 s on a formula simplification that was a NOOP. DAG size: 46 [2021-11-03 04:49:53,528 WARN L207 SmtUtils]: Spent 6.17 s on a formula simplification that was a NOOP. DAG size: 53 [2021-11-03 04:50:08,664 WARN L207 SmtUtils]: Spent 6.18 s on a formula simplification that was a NOOP. DAG size: 57 [2021-11-03 04:50:20,095 WARN L207 SmtUtils]: Spent 6.12 s on a formula simplification that was a NOOP. DAG size: 47 [2021-11-03 04:50:44,027 WARN L207 SmtUtils]: Spent 6.92 s on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2021-11-03 04:51:23,148 WARN L207 SmtUtils]: Spent 31.44 s on a formula simplification. DAG size of input: 98 DAG size of output: 72 [2021-11-03 04:51:46,361 WARN L207 SmtUtils]: Spent 18.22 s on a formula simplification that was a NOOP. DAG size: 91