./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_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_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/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_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/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_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/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 8de283a79f01a407383b7daa040c59e7c5c73f52f0f9c705f7021a208716cd24 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:44:57,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:44:57,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:44:57,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:44:57,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:44:57,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:44:57,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:44:57,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:44:57,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:44:57,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:44:57,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:44:57,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:44:57,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:44:57,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:44:57,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:44:57,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:44:57,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:44:57,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:44:57,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:44:57,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:44:57,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:44:57,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:44:57,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:44:57,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:44:57,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:44:57,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:44:57,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:44:57,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:44:57,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:44:57,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:44:57,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:44:57,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:44:57,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:44:57,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:44:57,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:44:57,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:44:57,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:44:57,258 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:44:57,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:44:57,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:44:57,260 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:44:57,260 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 03:44:57,300 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:44:57,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:44:57,302 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:44:57,302 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:44:57,303 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:44:57,303 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:44:57,303 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:44:57,303 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:44:57,304 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:44:57,304 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:44:57,305 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:44:57,305 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:44:57,305 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:44:57,306 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:44:57,306 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:44:57,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:44:57,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:44:57,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:44:57,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:44:57,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:44:57,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:44:57,308 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:44:57,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:44:57,308 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:44:57,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:44:57,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:44:57,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:44:57,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:44:57,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:44:57,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:44:57,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:44:57,310 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:44:57,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:44:57,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:44:57,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:44:57,311 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:44:57,312 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_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8de283a79f01a407383b7daa040c59e7c5c73f52f0f9c705f7021a208716cd24 [2021-11-03 03:44:57,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:44:57,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:44:57,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:44:57,622 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:44:57,623 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:44:57,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i [2021-11-03 03:44:57,684 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/data/837c4bf3a/4fac2fc80d324539afbbcdacfaf06855/FLAG4762f904c [2021-11-03 03:44:58,577 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:44:58,578 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i [2021-11-03 03:44:58,651 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/data/837c4bf3a/4fac2fc80d324539afbbcdacfaf06855/FLAG4762f904c [2021-11-03 03:44:59,109 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/data/837c4bf3a/4fac2fc80d324539afbbcdacfaf06855 [2021-11-03 03:44:59,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:44:59,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:44:59,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:44:59,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:44:59,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:44:59,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:44:59" (1/1) ... [2021-11-03 03:44:59,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b088e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:59, skipping insertion in model container [2021-11-03 03:44:59,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:44:59" (1/1) ... [2021-11-03 03:44:59,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:44:59,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:44:59,638 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_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4498,4511] [2021-11-03 03:44:59,651 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_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4558,4571] [2021-11-03 03:44:59,678 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 03:44:59,687 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 03:45:00,871 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:00,872 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:00,872 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:00,874 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:00,876 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:00,901 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:00,901 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:00,903 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:00,903 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:01,305 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 03:45:01,306 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 03:45:01,307 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 03:45:01,308 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 03:45:01,310 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 03:45:01,310 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 03:45:01,311 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 03:45:01,312 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 03:45:01,312 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 03:45:01,313 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 03:45:01,497 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 03:45:01,512 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.IllegalArgumentException: byte size smaller than 1 makes no sense at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.preferences.CACSLPreferenceInitializer$MemoryModel.getPreciseEnoughMemoryModelFor(CACSLPreferenceInitializer.java:194) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.checkIfNecessaryMemoryModelAdaption(CHandler.java:1054) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:962) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1369) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:249) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.translateInitializer(CHandler.java:2938) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleIASTDeclarator(CHandler.java:2798) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2101) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:143) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1119) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:211) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1068) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1452) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3247) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2321) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:594) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-03 03:45:01,522 INFO L168 Benchmark]: Toolchain (without parser) took 2402.65 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 53.9 MB in the beginning and 58.7 MB in the end (delta: -4.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-11-03 03:45:01,523 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 92.3 MB. Free memory was 62.3 MB in the beginning and 62.3 MB in the end (delta: 49.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:45:01,525 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2385.31 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 53.6 MB in the beginning and 58.7 MB in the end (delta: -5.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-11-03 03:45:01,527 INFO L339 ainManager$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 92.3 MB. Free memory was 62.3 MB in the beginning and 62.3 MB in the end (delta: 49.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2385.31 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 53.6 MB in the beginning and 58.7 MB in the end (delta: -5.1 MB). Peak memory consumption was 27.3 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_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/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_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/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_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/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 8de283a79f01a407383b7daa040c59e7c5c73f52f0f9c705f7021a208716cd24 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:45:03,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:45:03,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:45:03,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:45:03,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:45:03,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:45:03,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:45:03,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:45:03,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:45:03,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:45:03,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:45:03,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:45:03,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:45:03,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:45:03,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:45:03,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:45:03,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:45:03,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:45:03,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:45:03,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:45:03,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:45:03,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:45:03,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:45:03,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:45:03,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:45:03,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:45:03,822 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:45:03,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:45:03,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:45:03,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:45:03,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:45:03,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:45:03,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:45:03,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:45:03,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:45:03,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:45:03,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:45:03,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:45:03,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:45:03,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:45:03,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:45:03,842 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 03:45:03,885 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:45:03,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:45:03,886 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:45:03,887 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:45:03,887 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:45:03,887 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:45:03,887 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:45:03,888 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:45:03,888 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:45:03,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:45:03,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:45:03,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:45:03,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:45:03,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:45:03,891 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:45:03,891 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:45:03,892 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:45:03,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:45:03,892 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:45:03,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:45:03,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:45:03,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:45:03,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:45:03,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:45:03,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:45:03,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:45:03,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:45:03,894 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:45:03,894 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:45:03,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:45:03,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:45:03,895 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:45:03,895 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_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8de283a79f01a407383b7daa040c59e7c5c73f52f0f9c705f7021a208716cd24 [2021-11-03 03:45:04,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:45:04,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:45:04,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:45:04,328 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:45:04,330 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:45:04,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i [2021-11-03 03:45:04,403 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/data/81a486ab7/11a22bd08013444ab1744994c7df12f2/FLAGd79abff5c [2021-11-03 03:45:05,289 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:45:05,290 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i [2021-11-03 03:45:05,340 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/data/81a486ab7/11a22bd08013444ab1744994c7df12f2/FLAGd79abff5c [2021-11-03 03:45:05,781 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/data/81a486ab7/11a22bd08013444ab1744994c7df12f2 [2021-11-03 03:45:05,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:45:05,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:45:05,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:45:05,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:45:05,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:45:05,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:45:05" (1/1) ... [2021-11-03 03:45:05,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ba56b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:05, skipping insertion in model container [2021-11-03 03:45:05,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:45:05" (1/1) ... [2021-11-03 03:45:05,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:45:05,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:45:06,262 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_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4498,4511] [2021-11-03 03:45:06,288 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_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4558,4571] [2021-11-03 03:45:06,316 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 03:45:06,332 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 03:45:07,246 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:07,247 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:07,248 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:07,249 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:07,250 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:07,265 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:07,266 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:07,268 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:07,269 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:07,754 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 03:45:07,756 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 03:45:07,757 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 03:45:07,758 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 03:45:07,760 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 03:45:07,761 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 03:45:07,761 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 03:45:07,762 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 03:45:07,763 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 03:45:07,764 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 03:45:07,969 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 03:45:08,057 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:08,057 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:08,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:45:08,204 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:45:08,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:45:08,262 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_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4498,4511] [2021-11-03 03:45:08,263 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_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4558,4571] [2021-11-03 03:45:08,264 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 03:45:08,265 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 03:45:08,301 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:08,301 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:08,302 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:08,302 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:08,303 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:08,309 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:08,309 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:08,310 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:08,311 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:08,366 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 03:45:08,367 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 03:45:08,368 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 03:45:08,369 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 03:45:08,370 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 03:45:08,370 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 03:45:08,371 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 03:45:08,371 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 03:45:08,372 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 03:45:08,372 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 03:45:08,393 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 03:45:08,451 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:08,451 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:08,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:45:08,545 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:45:08,558 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_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4498,4511] [2021-11-03 03:45:08,558 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_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4558,4571] [2021-11-03 03:45:08,560 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 03:45:08,561 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 03:45:08,589 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:08,589 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:08,589 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:08,590 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:08,590 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:08,596 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:08,596 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:08,597 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:08,598 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:08,626 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 03:45:08,627 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 03:45:08,628 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 03:45:08,628 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 03:45:08,629 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 03:45:08,629 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 03:45:08,630 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 03:45:08,630 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 03:45:08,631 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 03:45:08,631 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 03:45:08,648 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 03:45:08,726 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:08,726 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:45:08,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:45:09,110 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:45:09,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:09 WrapperNode [2021-11-03 03:45:09,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:45:09,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:45:09,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:45:09,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:45:09,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:09" (1/1) ... [2021-11-03 03:45:09,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:09" (1/1) ... [2021-11-03 03:45:09,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:45:09,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:45:09,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:45:09,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:45:09,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:09" (1/1) ... [2021-11-03 03:45:09,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:09" (1/1) ... [2021-11-03 03:45:09,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:09" (1/1) ... [2021-11-03 03:45:09,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:09" (1/1) ... [2021-11-03 03:45:09,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:09" (1/1) ... [2021-11-03 03:45:09,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:09" (1/1) ... [2021-11-03 03:45:09,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:09" (1/1) ... [2021-11-03 03:45:09,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:45:09,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:45:09,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:45:09,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:45:09,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:09" (1/1) ... [2021-11-03 03:45:09,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:45:09,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:45:09,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:45:09,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:45:09,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:45:09,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:45:09,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 03:45:09,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 03:45:09,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:45:09,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:45:09,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 03:45:09,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 03:45:09,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:45:09,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 03:45:09,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 03:45:09,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 03:45:22,794 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:45:22,794 INFO L299 CfgBuilder]: Removed 61 assume(true) statements. [2021-11-03 03:45:22,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:45:22 BoogieIcfgContainer [2021-11-03 03:45:22,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:45:22,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:45:22,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:45:22,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:45:22,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:45:05" (1/3) ... [2021-11-03 03:45:22,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd01799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:45:22, skipping insertion in model container [2021-11-03 03:45:22,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:09" (2/3) ... [2021-11-03 03:45:22,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd01799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:45:22, skipping insertion in model container [2021-11-03 03:45:22,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:45:22" (3/3) ... [2021-11-03 03:45:22,804 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_eq_ignore_case_harness.i [2021-11-03 03:45:22,809 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:45:22,810 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-03 03:45:22,856 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:45:22,862 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 03:45:22,862 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-03 03:45:22,876 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 63 states have (on average 1.4761904761904763) internal successors, (93), 66 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:22,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 03:45:22,882 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:22,883 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] [2021-11-03 03:45:22,883 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:45:22,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:22,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1732099540, now seen corresponding path program 1 times [2021-11-03 03:45:22,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:45:22,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335132328] [2021-11-03 03:45:22,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:22,910 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:45:22,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:45:22,913 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:45:22,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:45:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:26,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 03:45:26,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:27,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:27,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:27,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:27,091 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:27,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335132328] [2021-11-03 03:45:27,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335132328] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:27,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:27,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:45:27,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223566105] [2021-11-03 03:45:27,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 03:45:27,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:45:27,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 03:45:27,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:45:27,116 INFO L87 Difference]: Start difference. First operand has 67 states, 63 states have (on average 1.4761904761904763) internal successors, (93), 66 states have internal predecessors, (93), 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 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:27,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:27,137 INFO L93 Difference]: Finished difference Result 131 states and 182 transitions. [2021-11-03 03:45:27,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 03:45:27,139 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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 27 [2021-11-03 03:45:27,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:27,148 INFO L225 Difference]: With dead ends: 131 [2021-11-03 03:45:27,160 INFO L226 Difference]: Without dead ends: 61 [2021-11-03 03:45:27,163 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:45:27,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-03 03:45:27,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-11-03 03:45:27,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 60 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:27,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2021-11-03 03:45:27,228 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 27 [2021-11-03 03:45:27,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:27,233 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2021-11-03 03:45:27,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:27,233 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2021-11-03 03:45:27,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 03:45:27,235 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:27,235 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] [2021-11-03 03:45:27,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:45:27,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:45:27,436 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:45:27,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:27,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1816466470, now seen corresponding path program 1 times [2021-11-03 03:45:27,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:45:27,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391905282] [2021-11-03 03:45:27,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:27,449 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:45:27,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:45:27,450 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:45:27,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:45:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:31,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-03 03:45:31,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:32,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:32,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:32,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:32,689 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:32,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391905282] [2021-11-03 03:45:32,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391905282] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:32,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:32,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-11-03 03:45:32,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405489862] [2021-11-03 03:45:32,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 03:45:32,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:45:32,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 03:45:32,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-03 03:45:32,702 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 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 03:45:35,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:35,139 INFO L93 Difference]: Finished difference Result 364 states and 417 transitions. [2021-11-03 03:45:35,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-03 03:45:35,149 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 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 27 [2021-11-03 03:45:35,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:35,154 INFO L225 Difference]: With dead ends: 364 [2021-11-03 03:45:35,155 INFO L226 Difference]: Without dead ends: 346 [2021-11-03 03:45:35,156 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=161, Invalid=541, Unknown=0, NotChecked=0, Total=702 [2021-11-03 03:45:35,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-11-03 03:45:35,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 110. [2021-11-03 03:45:35,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 109 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:35,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 127 transitions. [2021-11-03 03:45:35,180 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 127 transitions. Word has length 27 [2021-11-03 03:45:35,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:35,180 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 127 transitions. [2021-11-03 03:45:35,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 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 03:45:35,181 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 127 transitions. [2021-11-03 03:45:35,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-03 03:45:35,183 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:35,183 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] [2021-11-03 03:45:35,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:45:35,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:45:35,384 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:45:35,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:35,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1086636907, now seen corresponding path program 1 times [2021-11-03 03:45:35,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:45:35,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878292222] [2021-11-03 03:45:35,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:35,393 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:45:35,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:45:35,394 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:45:35,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:45:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:39,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:45:39,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:39,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:39,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:39,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:39,441 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:39,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878292222] [2021-11-03 03:45:39,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878292222] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:39,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:39,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 03:45:39,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719379332] [2021-11-03 03:45:39,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:45:39,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:45:39,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:45:39,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:45:39,444 INFO L87 Difference]: Start difference. First operand 110 states and 127 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:39,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:39,720 INFO L93 Difference]: Finished difference Result 140 states and 165 transitions. [2021-11-03 03:45:39,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:45:39,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 29 [2021-11-03 03:45:39,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:39,722 INFO L225 Difference]: With dead ends: 140 [2021-11-03 03:45:39,722 INFO L226 Difference]: Without dead ends: 112 [2021-11-03 03:45:39,723 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:45:39,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-03 03:45:39,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 91. [2021-11-03 03:45:39,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 88 states have (on average 1.2045454545454546) internal successors, (106), 90 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:39,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2021-11-03 03:45:39,732 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 29 [2021-11-03 03:45:39,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:39,732 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2021-11-03 03:45:39,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:39,733 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2021-11-03 03:45:39,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-03 03:45:39,734 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:39,734 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] [2021-11-03 03:45:39,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-03 03:45:39,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:45:39,954 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:45:39,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:39,955 INFO L85 PathProgramCache]: Analyzing trace with hash -358402595, now seen corresponding path program 1 times [2021-11-03 03:45:39,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:45:39,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535777001] [2021-11-03 03:45:39,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:39,959 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:45:39,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:45:39,961 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:45:39,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:45:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:43,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 1743 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-03 03:45:43,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:44,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:44,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:45,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:45,491 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:45,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535777001] [2021-11-03 03:45:45,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535777001] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:45,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:45,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 17 [2021-11-03 03:45:45,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857353099] [2021-11-03 03:45:45,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 03:45:45,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:45:45,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 03:45:45,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-11-03 03:45:45,494 INFO L87 Difference]: Start difference. First operand 91 states and 106 transitions. Second operand has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:47,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:47,822 INFO L93 Difference]: Finished difference Result 287 states and 333 transitions. [2021-11-03 03:45:47,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 03:45:47,848 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-03 03:45:47,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:47,850 INFO L225 Difference]: With dead ends: 287 [2021-11-03 03:45:47,850 INFO L226 Difference]: Without dead ends: 269 [2021-11-03 03:45:47,851 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2021-11-03 03:45:47,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-11-03 03:45:47,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 123. [2021-11-03 03:45:47,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 120 states have (on average 1.1916666666666667) internal successors, (143), 122 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:47,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2021-11-03 03:45:47,866 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 33 [2021-11-03 03:45:47,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:47,866 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2021-11-03 03:45:47,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:47,867 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2021-11-03 03:45:47,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 03:45:47,869 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:47,869 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:45:47,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:45:48,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:45:48,093 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:45:48,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:48,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1248189667, now seen corresponding path program 1 times [2021-11-03 03:45:48,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:45:48,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394391245] [2021-11-03 03:45:48,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:48,098 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:45:48,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:45:48,099 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:45:48,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 03:45:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:51,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 1766 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:45:51,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:52,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:52,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:52,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:52,211 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:52,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394391245] [2021-11-03 03:45:52,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394391245] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:52,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:52,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:45:52,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919261583] [2021-11-03 03:45:52,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:45:52,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:45:52,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:45:52,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:45:52,214 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:52,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:52,284 INFO L93 Difference]: Finished difference Result 156 states and 180 transitions. [2021-11-03 03:45:52,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:45:52,285 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-03 03:45:52,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:52,287 INFO L225 Difference]: With dead ends: 156 [2021-11-03 03:45:52,287 INFO L226 Difference]: Without dead ends: 145 [2021-11-03 03:45:52,288 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:45:52,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-03 03:45:52,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 127. [2021-11-03 03:45:52,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 124 states have (on average 1.185483870967742) internal successors, (147), 126 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:52,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 147 transitions. [2021-11-03 03:45:52,300 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 147 transitions. Word has length 34 [2021-11-03 03:45:52,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:52,300 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 147 transitions. [2021-11-03 03:45:52,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:52,301 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 147 transitions. [2021-11-03 03:45:52,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 03:45:52,303 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:52,303 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:45:52,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 03:45:52,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:45:52,525 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:45:52,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:52,525 INFO L85 PathProgramCache]: Analyzing trace with hash -567631149, now seen corresponding path program 1 times [2021-11-03 03:45:52,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:45:52,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883251379] [2021-11-03 03:45:52,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:52,531 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:45:52,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:45:52,532 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:45:52,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 03:45:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:56,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-03 03:45:56,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:57,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:57,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:58,153 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:58,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883251379] [2021-11-03 03:45:58,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883251379] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:58,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:58,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 10] imperfect sequences [] total 23 [2021-11-03 03:45:58,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987593209] [2021-11-03 03:45:58,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-03 03:45:58,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:45:58,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-03 03:45:58,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2021-11-03 03:45:58,157 INFO L87 Difference]: Start difference. First operand 127 states and 147 transitions. Second operand has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:05,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:46:05,303 INFO L93 Difference]: Finished difference Result 461 states and 507 transitions. [2021-11-03 03:46:05,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-03 03:46:05,304 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-03 03:46:05,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:46:05,306 INFO L225 Difference]: With dead ends: 461 [2021-11-03 03:46:05,307 INFO L226 Difference]: Without dead ends: 430 [2021-11-03 03:46:05,310 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1271 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1099, Invalid=4157, Unknown=0, NotChecked=0, Total=5256 [2021-11-03 03:46:05,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-11-03 03:46:05,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 175. [2021-11-03 03:46:05,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 172 states have (on average 1.1686046511627908) internal successors, (201), 174 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:05,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 201 transitions. [2021-11-03 03:46:05,334 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 201 transitions. Word has length 34 [2021-11-03 03:46:05,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:46:05,335 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 201 transitions. [2021-11-03 03:46:05,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:05,335 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 201 transitions. [2021-11-03 03:46:05,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-03 03:46:05,337 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:46:05,337 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] [2021-11-03 03:46:05,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 03:46:05,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:46:05,549 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:46:05,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:46:05,549 INFO L85 PathProgramCache]: Analyzing trace with hash 513264780, now seen corresponding path program 1 times [2021-11-03 03:46:05,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:46:05,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989578213] [2021-11-03 03:46:05,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:46:05,553 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:46:05,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:46:05,554 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:46:05,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 03:46:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:46:09,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-03 03:46:09,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:46:10,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:10,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:46:11,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:11,215 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:46:11,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1989578213] [2021-11-03 03:46:11,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1989578213] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:46:11,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:46:11,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 17 [2021-11-03 03:46:11,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528514268] [2021-11-03 03:46:11,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 03:46:11,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:46:11,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 03:46:11,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-11-03 03:46:11,217 INFO L87 Difference]: Start difference. First operand 175 states and 201 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 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 03:46:13,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:46:13,202 INFO L93 Difference]: Finished difference Result 313 states and 364 transitions. [2021-11-03 03:46:13,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-03 03:46:13,202 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 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 35 [2021-11-03 03:46:13,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:46:13,204 INFO L225 Difference]: With dead ends: 313 [2021-11-03 03:46:13,204 INFO L226 Difference]: Without dead ends: 283 [2021-11-03 03:46:13,205 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2021-11-03 03:46:13,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-11-03 03:46:13,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 147. [2021-11-03 03:46:13,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 144 states have (on average 1.1666666666666667) internal successors, (168), 146 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:13,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 168 transitions. [2021-11-03 03:46:13,215 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 168 transitions. Word has length 35 [2021-11-03 03:46:13,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:46:13,216 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 168 transitions. [2021-11-03 03:46:13,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 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 03:46:13,216 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 168 transitions. [2021-11-03 03:46:13,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-03 03:46:13,218 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:46:13,218 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] [2021-11-03 03:46:13,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 03:46:13,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:46:13,441 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:46:13,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:46:13,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1686501973, now seen corresponding path program 1 times [2021-11-03 03:46:13,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:46:13,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222990760] [2021-11-03 03:46:13,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:46:13,445 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:46:13,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:46:13,446 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:46:13,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 03:46:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:46:17,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-03 03:46:17,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:46:18,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:18,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:46:18,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:18,985 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:46:18,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1222990760] [2021-11-03 03:46:18,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1222990760] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:46:18,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:46:18,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 9] imperfect sequences [] total 21 [2021-11-03 03:46:18,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080153722] [2021-11-03 03:46:18,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-03 03:46:18,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:46:18,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-03 03:46:18,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2021-11-03 03:46:18,987 INFO L87 Difference]: Start difference. First operand 147 states and 168 transitions. Second operand has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:23,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:46:23,505 INFO L93 Difference]: Finished difference Result 284 states and 319 transitions. [2021-11-03 03:46:23,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-03 03:46:23,506 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 states have internal predecessors, (68), 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 36 [2021-11-03 03:46:23,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:46:23,508 INFO L225 Difference]: With dead ends: 284 [2021-11-03 03:46:23,508 INFO L226 Difference]: Without dead ends: 258 [2021-11-03 03:46:23,510 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=586, Invalid=1964, Unknown=0, NotChecked=0, Total=2550 [2021-11-03 03:46:23,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-11-03 03:46:23,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 129. [2021-11-03 03:46:23,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 126 states have (on average 1.1746031746031746) internal successors, (148), 128 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 03:46:23,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 148 transitions. [2021-11-03 03:46:23,520 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 148 transitions. Word has length 36 [2021-11-03 03:46:23,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:46:23,520 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 148 transitions. [2021-11-03 03:46:23,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:23,521 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 148 transitions. [2021-11-03 03:46:23,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-03 03:46:23,522 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:46:23,522 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] [2021-11-03 03:46:23,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 03:46:23,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:46:23,725 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:46:23,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:46:23,725 INFO L85 PathProgramCache]: Analyzing trace with hash 2114197848, now seen corresponding path program 1 times [2021-11-03 03:46:23,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:46:23,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [774351706] [2021-11-03 03:46:23,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:46:23,729 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:46:23,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:46:23,730 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:46:23,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 03:46:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:46:27,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 1756 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-03 03:46:27,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:46:29,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:29,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:46:30,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:30,988 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:46:30,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [774351706] [2021-11-03 03:46:30,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [774351706] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:46:30,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:46:30,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19, 17] imperfect sequences [] total 33 [2021-11-03 03:46:30,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802975651] [2021-11-03 03:46:30,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-03 03:46:30,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:46:30,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-03 03:46:30,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=871, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 03:46:30,990 INFO L87 Difference]: Start difference. First operand 129 states and 148 transitions. Second operand has 33 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 33 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:39,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:46:39,766 INFO L93 Difference]: Finished difference Result 335 states and 370 transitions. [2021-11-03 03:46:39,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-03 03:46:39,767 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 33 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-03 03:46:39,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:46:39,769 INFO L225 Difference]: With dead ends: 335 [2021-11-03 03:46:39,769 INFO L226 Difference]: Without dead ends: 322 [2021-11-03 03:46:39,771 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1064 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=996, Invalid=4406, Unknown=0, NotChecked=0, Total=5402 [2021-11-03 03:46:39,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-11-03 03:46:39,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 152. [2021-11-03 03:46:39,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 149 states have (on average 1.1610738255033557) internal successors, (173), 151 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:39,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 173 transitions. [2021-11-03 03:46:39,782 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 173 transitions. Word has length 36 [2021-11-03 03:46:39,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:46:39,782 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 173 transitions. [2021-11-03 03:46:39,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 33 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:39,783 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 173 transitions. [2021-11-03 03:46:39,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-03 03:46:39,784 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:46:39,784 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] [2021-11-03 03:46:39,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 03:46:39,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:46:39,993 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:46:39,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:46:39,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1836970290, now seen corresponding path program 1 times [2021-11-03 03:46:39,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:46:39,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269080256] [2021-11-03 03:46:39,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:46:39,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:46:39,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:46:39,998 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:46:40,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 03:46:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:46:43,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 1756 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-03 03:46:43,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:46:45,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:45,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:46:47,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:47,525 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:46:47,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269080256] [2021-11-03 03:46:47,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269080256] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:46:47,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:46:47,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19, 19] imperfect sequences [] total 32 [2021-11-03 03:46:47,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013710563] [2021-11-03 03:46:47,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-03 03:46:47,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:46:47,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-03 03:46:47,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2021-11-03 03:46:47,527 INFO L87 Difference]: Start difference. First operand 152 states and 173 transitions. Second operand has 32 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:53,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:46:53,700 INFO L93 Difference]: Finished difference Result 332 states and 380 transitions. [2021-11-03 03:46:53,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-03 03:46:53,700 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-03 03:46:53,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:46:53,702 INFO L225 Difference]: With dead ends: 332 [2021-11-03 03:46:53,702 INFO L226 Difference]: Without dead ends: 314 [2021-11-03 03:46:53,704 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=623, Invalid=2569, Unknown=0, NotChecked=0, Total=3192 [2021-11-03 03:46:53,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-11-03 03:46:53,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 169. [2021-11-03 03:46:53,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 166 states have (on average 1.1626506024096386) internal successors, (193), 168 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:53,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 193 transitions. [2021-11-03 03:46:53,718 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 193 transitions. Word has length 36 [2021-11-03 03:46:53,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:46:53,718 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 193 transitions. [2021-11-03 03:46:53,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:53,719 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 193 transitions. [2021-11-03 03:46:53,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-03 03:46:53,719 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:46:53,719 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] [2021-11-03 03:46:53,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 03:46:53,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:46:53,933 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:46:53,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:46:53,933 INFO L85 PathProgramCache]: Analyzing trace with hash -865834336, now seen corresponding path program 1 times [2021-11-03 03:46:53,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:46:53,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158736572] [2021-11-03 03:46:53,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:46:53,938 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:46:53,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:46:53,939 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:46:53,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 03:46:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:46:57,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-03 03:46:57,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:46:58,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:58,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:46:59,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:59,645 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:46:59,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158736572] [2021-11-03 03:46:59,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158736572] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:46:59,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:46:59,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 10] imperfect sequences [] total 23 [2021-11-03 03:46:59,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430542313] [2021-11-03 03:46:59,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-03 03:46:59,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:46:59,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-03 03:46:59,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2021-11-03 03:46:59,647 INFO L87 Difference]: Start difference. First operand 169 states and 193 transitions. Second operand has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:04,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:47:04,530 INFO L93 Difference]: Finished difference Result 300 states and 335 transitions. [2021-11-03 03:47:04,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-03 03:47:04,531 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 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 37 [2021-11-03 03:47:04,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:47:04,532 INFO L225 Difference]: With dead ends: 300 [2021-11-03 03:47:04,533 INFO L226 Difference]: Without dead ends: 271 [2021-11-03 03:47:04,534 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=519, Invalid=1931, Unknown=0, NotChecked=0, Total=2450 [2021-11-03 03:47:04,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-11-03 03:47:04,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 169. [2021-11-03 03:47:04,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 166 states have (on average 1.1566265060240963) internal successors, (192), 168 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:04,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 192 transitions. [2021-11-03 03:47:04,544 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 192 transitions. Word has length 37 [2021-11-03 03:47:04,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:47:04,544 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 192 transitions. [2021-11-03 03:47:04,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:04,545 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 192 transitions. [2021-11-03 03:47:04,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-03 03:47:04,545 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:47:04,545 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] [2021-11-03 03:47:04,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 03:47:04,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:47:04,746 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:47:04,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:47:04,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1565375815, now seen corresponding path program 1 times [2021-11-03 03:47:04,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:47:04,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120679533] [2021-11-03 03:47:04,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:47:04,750 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:47:04,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:47:04,750 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:47:04,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 03:47:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:47:08,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 1762 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-03 03:47:08,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:47:10,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:47:10,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:47:12,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:47:12,017 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:47:12,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120679533] [2021-11-03 03:47:12,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120679533] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:47:12,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:47:12,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19, 17] imperfect sequences [] total 33 [2021-11-03 03:47:12,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885825691] [2021-11-03 03:47:12,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-03 03:47:12,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:47:12,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-03 03:47:12,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=871, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 03:47:12,019 INFO L87 Difference]: Start difference. First operand 169 states and 192 transitions. Second operand has 33 states, 33 states have (on average 2.121212121212121) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:20,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:47:20,965 INFO L93 Difference]: Finished difference Result 298 states and 335 transitions. [2021-11-03 03:47:20,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-03 03:47:20,966 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.121212121212121) internal successors, (70), 33 states have internal predecessors, (70), 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 38 [2021-11-03 03:47:20,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:47:20,968 INFO L225 Difference]: With dead ends: 298 [2021-11-03 03:47:20,968 INFO L226 Difference]: Without dead ends: 277 [2021-11-03 03:47:20,970 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1157 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1039, Invalid=4661, Unknown=0, NotChecked=0, Total=5700 [2021-11-03 03:47:20,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-11-03 03:47:20,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 154. [2021-11-03 03:47:20,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 151 states have (on average 1.1589403973509933) internal successors, (175), 153 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:20,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 175 transitions. [2021-11-03 03:47:20,982 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 175 transitions. Word has length 38 [2021-11-03 03:47:20,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:47:20,983 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 175 transitions. [2021-11-03 03:47:20,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.121212121212121) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:20,983 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 175 transitions. [2021-11-03 03:47:20,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-03 03:47:20,984 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:47:20,984 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] [2021-11-03 03:47:21,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 03:47:21,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:47:21,209 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:47:21,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:47:21,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1243884861, now seen corresponding path program 1 times [2021-11-03 03:47:21,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:47:21,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170105134] [2021-11-03 03:47:21,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:47:21,213 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:47:21,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:47:21,213 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:47:21,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 03:47:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:47:25,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 1762 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-03 03:47:25,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:47:26,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:47:26,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:47:28,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:47:28,500 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:47:28,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170105134] [2021-11-03 03:47:28,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170105134] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:47:28,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:47:28,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19, 19] imperfect sequences [] total 32 [2021-11-03 03:47:28,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563666702] [2021-11-03 03:47:28,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-03 03:47:28,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:47:28,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-03 03:47:28,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2021-11-03 03:47:28,502 INFO L87 Difference]: Start difference. First operand 154 states and 175 transitions. Second operand has 32 states, 32 states have (on average 2.0625) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:34,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:47:34,683 INFO L93 Difference]: Finished difference Result 262 states and 301 transitions. [2021-11-03 03:47:34,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-03 03:47:34,684 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-03 03:47:34,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:47:34,685 INFO L225 Difference]: With dead ends: 262 [2021-11-03 03:47:34,685 INFO L226 Difference]: Without dead ends: 243 [2021-11-03 03:47:34,686 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=668, Invalid=2872, Unknown=0, NotChecked=0, Total=3540 [2021-11-03 03:47:34,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-03 03:47:34,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 138. [2021-11-03 03:47:34,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 135 states have (on average 1.1555555555555554) internal successors, (156), 137 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:34,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 156 transitions. [2021-11-03 03:47:34,696 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 156 transitions. Word has length 38 [2021-11-03 03:47:34,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:47:34,696 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 156 transitions. [2021-11-03 03:47:34,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:34,697 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 156 transitions. [2021-11-03 03:47:34,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-03 03:47:34,698 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:47:34,698 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] [2021-11-03 03:47:34,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-03 03:47:34,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:47:34,913 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:47:34,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:47:34,913 INFO L85 PathProgramCache]: Analyzing trace with hash -640748201, now seen corresponding path program 1 times [2021-11-03 03:47:34,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:47:34,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183497412] [2021-11-03 03:47:34,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:47:34,917 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:47:34,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:47:34,918 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:47:34,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 03:47:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:47:38,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:47:39,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:47:39,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:47:39,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:47:39,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:47:39,162 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:47:39,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183497412] [2021-11-03 03:47:39,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183497412] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:47:39,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:47:39,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 03:47:39,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248126667] [2021-11-03 03:47:39,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:47:39,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:47:39,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:47:39,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:47:39,164 INFO L87 Difference]: Start difference. First operand 138 states and 156 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:39,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:47:39,213 INFO L93 Difference]: Finished difference Result 169 states and 190 transitions. [2021-11-03 03:47:39,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:47:39,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 39 [2021-11-03 03:47:39,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:47:39,214 INFO L225 Difference]: With dead ends: 169 [2021-11-03 03:47:39,214 INFO L226 Difference]: Without dead ends: 151 [2021-11-03 03:47:39,215 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:47:39,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-03 03:47:39,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 138. [2021-11-03 03:47:39,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 135 states have (on average 1.1333333333333333) internal successors, (153), 137 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 03:47:39,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 153 transitions. [2021-11-03 03:47:39,224 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 153 transitions. Word has length 39 [2021-11-03 03:47:39,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:47:39,224 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 153 transitions. [2021-11-03 03:47:39,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:39,224 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 153 transitions. [2021-11-03 03:47:39,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-03 03:47:39,225 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:47:39,225 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:47:39,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 03:47:39,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:47:39,441 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:47:39,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:47:39,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1876182655, now seen corresponding path program 1 times [2021-11-03 03:47:39,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:47:39,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775927873] [2021-11-03 03:47:39,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:47:39,446 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:47:39,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:47:39,447 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:47:39,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 03:47:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:47:43,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 1795 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-03 03:47:43,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:47:44,497 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:44,498 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2021-11-03 03:47:44,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:47:44,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:47:45,126 INFO L354 Elim1Store]: treesize reduction 13, result has 82.9 percent of original size [2021-11-03 03:47:45,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 80 [2021-11-03 03:47:54,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:47:54,439 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:47:54,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775927873] [2021-11-03 03:47:54,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775927873] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:47:54,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:47:54,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 6] imperfect sequences [] total 13 [2021-11-03 03:47:54,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308655782] [2021-11-03 03:47:54,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 03:47:54,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:47:54,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 03:47:54,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-03 03:47:54,441 INFO L87 Difference]: Start difference. First operand 138 states and 153 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:55,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:47:55,784 INFO L93 Difference]: Finished difference Result 177 states and 194 transitions. [2021-11-03 03:47:55,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 03:47:55,785 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-03 03:47:55,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:47:55,786 INFO L225 Difference]: With dead ends: 177 [2021-11-03 03:47:55,786 INFO L226 Difference]: Without dead ends: 164 [2021-11-03 03:47:55,787 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2021-11-03 03:47:55,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-03 03:47:55,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 136. [2021-11-03 03:47:55,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 133 states have (on average 1.1278195488721805) internal successors, (150), 135 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 03:47:55,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 150 transitions. [2021-11-03 03:47:55,796 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 150 transitions. Word has length 40 [2021-11-03 03:47:55,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:47:55,796 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 150 transitions. [2021-11-03 03:47:55,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:55,797 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 150 transitions. [2021-11-03 03:47:55,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 03:47:55,798 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:47:55,798 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 03:47:55,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 03:47:56,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:47:56,021 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:47:56,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:47:56,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1883205687, now seen corresponding path program 1 times [2021-11-03 03:47:56,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:47:56,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124304845] [2021-11-03 03:47:56,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:47:56,027 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:47:56,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:47:56,028 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:47:56,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 03:48:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:00,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 03:48:00,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:48:01,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:01,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:48:01,452 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 03:48:01,452 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:48:01,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124304845] [2021-11-03 03:48:01,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124304845] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:01,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:01,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 6] imperfect sequences [] total 15 [2021-11-03 03:48:01,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265565675] [2021-11-03 03:48:01,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 03:48:01,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:48:01,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 03:48:01,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-03 03:48:01,453 INFO L87 Difference]: Start difference. First operand 136 states and 150 transitions. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:03,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:03,254 INFO L93 Difference]: Finished difference Result 266 states and 287 transitions. [2021-11-03 03:48:03,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-03 03:48:03,255 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 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 03:48:03,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:03,257 INFO L225 Difference]: With dead ends: 266 [2021-11-03 03:48:03,257 INFO L226 Difference]: Without dead ends: 244 [2021-11-03 03:48:03,258 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=256, Invalid=866, Unknown=0, NotChecked=0, Total=1122 [2021-11-03 03:48:03,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-03 03:48:03,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 161. [2021-11-03 03:48:03,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 158 states have (on average 1.1329113924050633) internal successors, (179), 160 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:03,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 179 transitions. [2021-11-03 03:48:03,272 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 179 transitions. Word has length 41 [2021-11-03 03:48:03,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:03,272 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 179 transitions. [2021-11-03 03:48:03,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:03,272 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 179 transitions. [2021-11-03 03:48:03,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 03:48:03,273 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:03,273 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 03:48:03,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-03 03:48:03,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:48:03,497 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:48:03,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:03,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1569116892, now seen corresponding path program 1 times [2021-11-03 03:48:03,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:48:03,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1531192013] [2021-11-03 03:48:03,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:03,500 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:48:03,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:48:03,501 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:48:03,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3158efb1-29ce-4c6c-a7f4-2b2e49837cb0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 03:49:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:49:39,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-03 03:49:39,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:49:39,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 03:49:39,627 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 03:49:39,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-03 03:49:39,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:39,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 79 [2021-11-03 03:49:44,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:44,468 INFO L244 Elim1Store]: Index analysis took 112 ms [2021-11-03 03:49:44,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 138 [2021-11-03 03:49:47,709 INFO L354 Elim1Store]: treesize reduction 222, result has 1.3 percent of original size [2021-11-03 03:49:47,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 36 disjoint index pairs (out of 55 index pairs), introduced 13 new quantified variables, introduced 55 case distinctions, treesize of input 245 treesize of output 106 [2021-11-03 03:49:47,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:49:47,776 INFO L328 TraceCheckSpWp]: Computing backward predicates...