./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_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_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/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_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/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_9e42155a-5ff4-4251-a27d-2f533df0382f/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 5c58e2434ae79fdf5f8dceab88ea2b6ad3f1a1a8bb44e2d930eaf759f64b3d29 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:13:03,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:13:03,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:13:03,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:13:03,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:13:03,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:13:03,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:13:03,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:13:03,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:13:03,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:13:03,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:13:03,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:13:03,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:13:03,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:13:03,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:13:03,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:13:03,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:13:03,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:13:03,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:13:03,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:13:03,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:13:03,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:13:03,184 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:13:03,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:13:03,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:13:03,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:13:03,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:13:03,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:13:03,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:13:03,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:13:03,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:13:03,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:13:03,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:13:03,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:13:03,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:13:03,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:13:03,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:13:03,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:13:03,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:13:03,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:13:03,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:13:03,205 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 04:13:03,236 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:13:03,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:13:03,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:13:03,238 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:13:03,238 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:13:03,239 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:13:03,239 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:13:03,239 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:13:03,239 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:13:03,240 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:13:03,240 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:13:03,240 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:13:03,241 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:13:03,241 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:13:03,241 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:13:03,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:13:03,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:13:03,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:13:03,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:13:03,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:13:03,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:13:03,244 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:13:03,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:13:03,245 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:13:03,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:13:03,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:13:03,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:13:03,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:13:03,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:13:03,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:13:03,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:13:03,247 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:13:03,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:13:03,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:13:03,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:13:03,248 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:13:03,249 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_9e42155a-5ff4-4251-a27d-2f533df0382f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c58e2434ae79fdf5f8dceab88ea2b6ad3f1a1a8bb44e2d930eaf759f64b3d29 [2021-11-03 04:13:03,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:13:03,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:13:03,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:13:03,567 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:13:03,568 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:13:03,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i [2021-11-03 04:13:03,677 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/data/4a658937b/25b3e7170824405ab925db372b76737a/FLAG0eb872b99 [2021-11-03 04:13:04,766 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:13:04,767 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i [2021-11-03 04:13:04,822 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/data/4a658937b/25b3e7170824405ab925db372b76737a/FLAG0eb872b99 [2021-11-03 04:13:05,195 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/data/4a658937b/25b3e7170824405ab925db372b76737a [2021-11-03 04:13:05,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:13:05,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:13:05,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:13:05,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:13:05,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:13:05,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:13:05" (1/1) ... [2021-11-03 04:13:05,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16217c9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:05, skipping insertion in model container [2021-11-03 04:13:05,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:13:05" (1/1) ... [2021-11-03 04:13:05,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:13:05,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:13:05,798 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_9e42155a-5ff4-4251-a27d-2f533df0382f/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4499,4512] [2021-11-03 04:13:05,810 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_9e42155a-5ff4-4251-a27d-2f533df0382f/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4559,4572] [2021-11-03 04:13:05,843 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:13:05,853 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:13:07,110 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:07,111 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:07,112 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:07,113 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:07,114 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:07,130 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:07,131 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:07,133 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:07,134 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:07,708 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:13:07,710 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:13:07,711 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:13:07,713 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:13:07,715 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:13:07,716 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:13:07,717 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:13:07,718 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:13:07,719 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:13:07,720 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:13:07,930 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:13:07,952 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.IllegalArgumentException: byte size smaller than 1 makes no sense at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.preferences.CACSLPreferenceInitializer$MemoryModel.getPreciseEnoughMemoryModelFor(CACSLPreferenceInitializer.java:194) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.checkIfNecessaryMemoryModelAdaption(CHandler.java:1054) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:962) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1369) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:249) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.translateInitializer(CHandler.java:2938) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleIASTDeclarator(CHandler.java:2798) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2101) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:143) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1119) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:211) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1068) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1452) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3247) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2321) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:594) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-03 04:13:07,962 INFO L168 Benchmark]: Toolchain (without parser) took 2758.49 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 48.1 MB in the beginning and 75.0 MB in the end (delta: -26.9 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:13:07,963 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory was 63.0 MB in the beginning and 63.0 MB in the end (delta: 26.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:13:07,965 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2751.72 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 47.9 MB in the beginning and 75.0 MB in the end (delta: -27.1 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:13:07,967 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory was 63.0 MB in the beginning and 63.0 MB in the end (delta: 26.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2751.72 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 47.9 MB in the beginning and 75.0 MB in the end (delta: -27.1 MB). Peak memory consumption was 17.6 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_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/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_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/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_9e42155a-5ff4-4251-a27d-2f533df0382f/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 5c58e2434ae79fdf5f8dceab88ea2b6ad3f1a1a8bb44e2d930eaf759f64b3d29 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:13:10,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:13:10,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:13:10,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:13:10,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:13:10,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:13:10,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:13:10,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:13:10,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:13:10,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:13:10,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:13:10,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:13:10,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:13:10,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:13:10,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:13:10,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:13:10,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:13:10,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:13:10,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:13:10,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:13:10,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:13:10,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:13:10,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:13:10,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:13:10,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:13:10,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:13:10,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:13:10,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:13:10,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:13:10,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:13:10,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:13:10,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:13:10,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:13:10,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:13:10,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:13:10,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:13:10,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:13:10,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:13:10,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:13:10,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:13:10,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:13:10,727 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 04:13:10,779 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:13:10,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:13:10,782 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:13:10,782 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:13:10,782 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:13:10,783 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:13:10,783 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:13:10,783 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:13:10,783 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:13:10,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:13:10,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:13:10,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:13:10,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:13:10,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:13:10,792 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:13:10,792 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:13:10,792 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:13:10,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:13:10,793 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:13:10,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:13:10,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:13:10,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:13:10,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:13:10,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:13:10,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:13:10,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:13:10,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:13:10,795 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:13:10,795 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:13:10,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:13:10,796 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:13:10,796 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:13:10,796 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_9e42155a-5ff4-4251-a27d-2f533df0382f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c58e2434ae79fdf5f8dceab88ea2b6ad3f1a1a8bb44e2d930eaf759f64b3d29 [2021-11-03 04:13:11,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:13:11,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:13:11,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:13:11,289 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:13:11,290 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:13:11,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i [2021-11-03 04:13:11,389 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/data/c4a517581/0e0fcd4f30b2444291569c053dceaf81/FLAGc1830dcae [2021-11-03 04:13:12,415 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:13:12,417 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i [2021-11-03 04:13:12,468 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/data/c4a517581/0e0fcd4f30b2444291569c053dceaf81/FLAGc1830dcae [2021-11-03 04:13:12,841 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/data/c4a517581/0e0fcd4f30b2444291569c053dceaf81 [2021-11-03 04:13:12,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:13:12,846 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:13:12,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:13:12,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:13:12,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:13:12,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:13:12" (1/1) ... [2021-11-03 04:13:12,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78936531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:12, skipping insertion in model container [2021-11-03 04:13:12,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:13:12" (1/1) ... [2021-11-03 04:13:12,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:13:13,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:13:13,361 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_9e42155a-5ff4-4251-a27d-2f533df0382f/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4499,4512] [2021-11-03 04:13:13,371 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_9e42155a-5ff4-4251-a27d-2f533df0382f/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4559,4572] [2021-11-03 04:13:13,410 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:13:13,431 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:13:14,616 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:14,617 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:14,617 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:14,619 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:14,620 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:14,650 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:14,651 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:14,653 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:14,654 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:15,307 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:13:15,310 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:13:15,313 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:13:15,316 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:13:15,325 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:13:15,327 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:13:15,329 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:13:15,331 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:13:15,335 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:13:15,336 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:13:15,564 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:13:15,738 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:15,739 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:15,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:13:15,859 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:13:15,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:13:15,910 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_9e42155a-5ff4-4251-a27d-2f533df0382f/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4499,4512] [2021-11-03 04:13:15,911 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_9e42155a-5ff4-4251-a27d-2f533df0382f/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4559,4572] [2021-11-03 04:13:15,913 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:13:15,914 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:13:15,987 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:15,988 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:15,988 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:15,989 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:15,990 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:15,998 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:15,999 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:16,000 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:16,001 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:16,046 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:13:16,047 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:13:16,048 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:13:16,049 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:13:16,050 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:13:16,051 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:13:16,052 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:13:16,052 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:13:16,053 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:13:16,054 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:13:16,087 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:13:16,248 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:16,248 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:16,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:13:16,334 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:13:16,358 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_9e42155a-5ff4-4251-a27d-2f533df0382f/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4499,4512] [2021-11-03 04:13:16,359 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_9e42155a-5ff4-4251-a27d-2f533df0382f/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4559,4572] [2021-11-03 04:13:16,361 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:13:16,361 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:13:16,409 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:16,409 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:16,410 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:16,410 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:16,411 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:16,418 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:16,422 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:16,423 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:16,424 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:16,470 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:13:16,470 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:13:16,471 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:13:16,472 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:13:16,472 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:13:16,473 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:13:16,473 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:13:16,474 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:13:16,475 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:13:16,475 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:13:16,500 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:13:16,618 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:16,619 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:13:16,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:13:16,943 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:13:16,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:16 WrapperNode [2021-11-03 04:13:16,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:13:16,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:13:16,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:13:16,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:13:16,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:16" (1/1) ... [2021-11-03 04:13:17,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:16" (1/1) ... [2021-11-03 04:13:17,268 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:13:17,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:13:17,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:13:17,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:13:17,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:16" (1/1) ... [2021-11-03 04:13:17,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:16" (1/1) ... [2021-11-03 04:13:17,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:16" (1/1) ... [2021-11-03 04:13:17,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:16" (1/1) ... [2021-11-03 04:13:17,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:16" (1/1) ... [2021-11-03 04:13:17,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:16" (1/1) ... [2021-11-03 04:13:17,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:16" (1/1) ... [2021-11-03 04:13:17,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:13:17,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:13:17,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:13:17,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:13:17,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:16" (1/1) ... [2021-11-03 04:13:17,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:13:17,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:13:17,511 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:13:17,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:13:17,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:13:17,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:13:17,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:13:17,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:13:17,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:13:17,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:13:17,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 04:13:17,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:13:17,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 04:13:17,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 04:13:17,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 04:13:19,313 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:13:19,313 INFO L299 CfgBuilder]: Removed 71 assume(true) statements. [2021-11-03 04:13:19,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:13:19 BoogieIcfgContainer [2021-11-03 04:13:19,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:13:19,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:13:19,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:13:19,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:13:19,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:13:12" (1/3) ... [2021-11-03 04:13:19,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53509e85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:13:19, skipping insertion in model container [2021-11-03 04:13:19,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:16" (2/3) ... [2021-11-03 04:13:19,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53509e85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:13:19, skipping insertion in model container [2021-11-03 04:13:19,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:13:19" (3/3) ... [2021-11-03 04:13:19,328 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_eq_ignore_case_harness.i [2021-11-03 04:13:19,359 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:13:19,360 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-03 04:13:19,427 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:13:19,433 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:13:19,433 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-03 04:13:19,485 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 88 states have (on average 1.4090909090909092) internal successors, (124), 91 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:19,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-03 04:13:19,495 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:19,496 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 04:13:19,497 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 04:13:19,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:19,504 INFO L85 PathProgramCache]: Analyzing trace with hash 690694871, now seen corresponding path program 1 times [2021-11-03 04:13:19,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:19,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267361622] [2021-11-03 04:13:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:19,526 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:19,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:19,530 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:19,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:13:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:19,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:13:19,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:20,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:20,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:20,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:20,199 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:20,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267361622] [2021-11-03 04:13:20,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267361622] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:20,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:20,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:13:20,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044991017] [2021-11-03 04:13:20,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:13:20,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:20,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:13:20,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:13:20,229 INFO L87 Difference]: Start difference. First operand has 92 states, 88 states have (on average 1.4090909090909092) internal successors, (124), 91 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:20,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:20,260 INFO L93 Difference]: Finished difference Result 178 states and 240 transitions. [2021-11-03 04:13:20,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:13:20,262 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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 04:13:20,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:20,274 INFO L225 Difference]: With dead ends: 178 [2021-11-03 04:13:20,275 INFO L226 Difference]: Without dead ends: 87 [2021-11-03 04:13:20,279 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:13:20,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-03 04:13:20,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-11-03 04:13:20,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 84 states have (on average 1.2619047619047619) internal successors, (106), 86 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 04:13:20,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 106 transitions. [2021-11-03 04:13:20,331 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 106 transitions. Word has length 29 [2021-11-03 04:13:20,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:20,332 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 106 transitions. [2021-11-03 04:13:20,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:20,333 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 106 transitions. [2021-11-03 04:13:20,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-03 04:13:20,335 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:20,335 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 04:13:20,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:13:20,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:13:20,557 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 04:13:20,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:20,558 INFO L85 PathProgramCache]: Analyzing trace with hash -72208045, now seen corresponding path program 1 times [2021-11-03 04:13:20,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:20,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26938660] [2021-11-03 04:13:20,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:20,561 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:20,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:20,566 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:20,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:13:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:20,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:13:20,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:21,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:21,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:21,631 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:21,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26938660] [2021-11-03 04:13:21,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26938660] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:21,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:21,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:13:21,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489308111] [2021-11-03 04:13:21,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:13:21,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:21,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:13:21,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:13:21,636 INFO L87 Difference]: Start difference. First operand 87 states and 106 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:21,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:21,724 INFO L93 Difference]: Finished difference Result 158 states and 194 transitions. [2021-11-03 04:13:21,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:13:21,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 04:13:21,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:21,730 INFO L225 Difference]: With dead ends: 158 [2021-11-03 04:13:21,730 INFO L226 Difference]: Without dead ends: 87 [2021-11-03 04:13:21,732 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:13:21,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-03 04:13:21,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-11-03 04:13:21,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 84 states have (on average 1.25) internal successors, (105), 86 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:21,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 105 transitions. [2021-11-03 04:13:21,743 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 105 transitions. Word has length 29 [2021-11-03 04:13:21,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:21,744 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 105 transitions. [2021-11-03 04:13:21,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:21,744 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 105 transitions. [2021-11-03 04:13:21,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-03 04:13:21,746 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:21,747 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:13:21,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-03 04:13:21,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:13:21,961 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 04:13:21,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:21,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1845709935, now seen corresponding path program 1 times [2021-11-03 04:13:21,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:21,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342441686] [2021-11-03 04:13:21,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:21,964 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:21,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:21,973 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:22,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:13:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:22,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 04:13:22,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:22,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:22,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:22,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:22,936 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:22,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342441686] [2021-11-03 04:13:22,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342441686] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:22,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:22,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2021-11-03 04:13:22,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347433168] [2021-11-03 04:13:22,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 04:13:22,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:22,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 04:13:22,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:13:22,943 INFO L87 Difference]: Start difference. First operand 87 states and 105 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:25,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:25,677 INFO L93 Difference]: Finished difference Result 133 states and 162 transitions. [2021-11-03 04:13:25,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:13:25,682 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-03 04:13:25,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:25,684 INFO L225 Difference]: With dead ends: 133 [2021-11-03 04:13:25,684 INFO L226 Difference]: Without dead ends: 87 [2021-11-03 04:13:25,685 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:13:25,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-03 04:13:25,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-11-03 04:13:25,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 84 states have (on average 1.2380952380952381) internal successors, (104), 86 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:25,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 104 transitions. [2021-11-03 04:13:25,709 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 104 transitions. Word has length 40 [2021-11-03 04:13:25,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:25,710 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 104 transitions. [2021-11-03 04:13:25,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:25,712 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 104 transitions. [2021-11-03 04:13:25,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-03 04:13:25,716 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:25,721 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:13:25,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:13:25,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:13:25,944 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 04:13:25,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:25,945 INFO L85 PathProgramCache]: Analyzing trace with hash 60498451, now seen corresponding path program 1 times [2021-11-03 04:13:25,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:25,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301286991] [2021-11-03 04:13:25,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:25,948 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:25,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:25,949 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:25,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:13:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:26,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-03 04:13:26,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:26,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:26,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:27,280 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 04:13:27,281 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:27,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1301286991] [2021-11-03 04:13:27,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1301286991] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:27,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:27,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 20 [2021-11-03 04:13:27,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737692772] [2021-11-03 04:13:27,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-03 04:13:27,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:27,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-03 04:13:27,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2021-11-03 04:13:27,284 INFO L87 Difference]: Start difference. First operand 87 states and 104 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:33,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:33,153 INFO L93 Difference]: Finished difference Result 154 states and 188 transitions. [2021-11-03 04:13:33,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 04:13:33,158 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-03 04:13:33,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:33,159 INFO L225 Difference]: With dead ends: 154 [2021-11-03 04:13:33,160 INFO L226 Difference]: Without dead ends: 106 [2021-11-03 04:13:33,161 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=234, Invalid=758, Unknown=0, NotChecked=0, Total=992 [2021-11-03 04:13:33,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-03 04:13:33,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 89. [2021-11-03 04:13:33,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 86 states have (on average 1.2093023255813953) internal successors, (104), 88 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:33,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 104 transitions. [2021-11-03 04:13:33,175 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 104 transitions. Word has length 45 [2021-11-03 04:13:33,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:33,175 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 104 transitions. [2021-11-03 04:13:33,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:33,176 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 104 transitions. [2021-11-03 04:13:33,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-03 04:13:33,178 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:33,178 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:13:33,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:13:33,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:13:33,411 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:13:33,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:33,412 INFO L85 PathProgramCache]: Analyzing trace with hash 878146901, now seen corresponding path program 1 times [2021-11-03 04:13:33,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:33,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790570611] [2021-11-03 04:13:33,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:33,421 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:33,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:33,422 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:33,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:13:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:33,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-03 04:13:33,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:34,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:34,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:34,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:34,552 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:34,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790570611] [2021-11-03 04:13:34,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790570611] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:34,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:34,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 12 [2021-11-03 04:13:34,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947586436] [2021-11-03 04:13:34,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:13:34,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:34,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:13:34,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:13:34,555 INFO L87 Difference]: Start difference. First operand 89 states and 104 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:39,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:39,386 INFO L93 Difference]: Finished difference Result 183 states and 215 transitions. [2021-11-03 04:13:39,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 04:13:39,390 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-03 04:13:39,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:39,392 INFO L225 Difference]: With dead ends: 183 [2021-11-03 04:13:39,392 INFO L226 Difference]: Without dead ends: 146 [2021-11-03 04:13:39,393 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=179, Invalid=471, Unknown=0, NotChecked=0, Total=650 [2021-11-03 04:13:39,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-03 04:13:39,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 103. [2021-11-03 04:13:39,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 100 states have (on average 1.2) internal successors, (120), 102 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:39,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 120 transitions. [2021-11-03 04:13:39,405 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 120 transitions. Word has length 45 [2021-11-03 04:13:39,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:39,406 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 120 transitions. [2021-11-03 04:13:39,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:39,406 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 120 transitions. [2021-11-03 04:13:39,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-03 04:13:39,408 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:39,408 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:13:39,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:13:39,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:13:39,629 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:13:39,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:39,630 INFO L85 PathProgramCache]: Analyzing trace with hash 940186515, now seen corresponding path program 1 times [2021-11-03 04:13:39,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:39,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548435210] [2021-11-03 04:13:39,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:39,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:39,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:39,633 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:39,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:13:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:40,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-03 04:13:40,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:40,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:40,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:40,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:40,917 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:40,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548435210] [2021-11-03 04:13:40,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [548435210] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:40,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:40,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 14 [2021-11-03 04:13:40,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110325645] [2021-11-03 04:13:40,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 04:13:40,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:40,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 04:13:40,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:13:40,920 INFO L87 Difference]: Start difference. First operand 103 states and 120 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:46,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:46,819 INFO L93 Difference]: Finished difference Result 168 states and 194 transitions. [2021-11-03 04:13:46,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 04:13:46,824 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-03 04:13:46,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:46,826 INFO L225 Difference]: With dead ends: 168 [2021-11-03 04:13:46,826 INFO L226 Difference]: Without dead ends: 145 [2021-11-03 04:13:46,827 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2021-11-03 04:13:46,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-03 04:13:46,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 112. [2021-11-03 04:13:46,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 109 states have (on average 1.201834862385321) internal successors, (131), 111 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:46,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 131 transitions. [2021-11-03 04:13:46,843 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 131 transitions. Word has length 45 [2021-11-03 04:13:46,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:46,844 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 131 transitions. [2021-11-03 04:13:46,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:46,844 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 131 transitions. [2021-11-03 04:13:46,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-03 04:13:46,864 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:46,864 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:13:46,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:13:47,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:13:47,091 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 04:13:47,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:47,092 INFO L85 PathProgramCache]: Analyzing trace with hash 491462746, now seen corresponding path program 1 times [2021-11-03 04:13:47,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:47,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736406079] [2021-11-03 04:13:47,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:47,094 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:47,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:47,095 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:47,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:13:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:47,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:13:47,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:47,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:47,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:47,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:47,959 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:47,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736406079] [2021-11-03 04:13:47,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736406079] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:47,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:47,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:13:47,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727681838] [2021-11-03 04:13:47,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:13:47,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:47,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:13:47,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:13:47,962 INFO L87 Difference]: Start difference. First operand 112 states and 131 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:48,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:48,003 INFO L93 Difference]: Finished difference Result 135 states and 155 transitions. [2021-11-03 04:13:48,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:13:48,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 46 [2021-11-03 04:13:48,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:48,006 INFO L225 Difference]: With dead ends: 135 [2021-11-03 04:13:48,006 INFO L226 Difference]: Without dead ends: 112 [2021-11-03 04:13:48,007 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:13:48,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-03 04:13:48,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-11-03 04:13:48,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 109 states have (on average 1.1926605504587156) internal successors, (130), 111 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:48,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 130 transitions. [2021-11-03 04:13:48,034 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 130 transitions. Word has length 46 [2021-11-03 04:13:48,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:48,035 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 130 transitions. [2021-11-03 04:13:48,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:48,035 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 130 transitions. [2021-11-03 04:13:48,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 04:13:48,039 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:48,039 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:13:48,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:13:48,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:13:48,243 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:13:48,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:48,244 INFO L85 PathProgramCache]: Analyzing trace with hash 584513185, now seen corresponding path program 1 times [2021-11-03 04:13:48,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:48,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122879897] [2021-11-03 04:13:48,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:48,245 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:48,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:48,247 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:48,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e42155a-5ff4-4251-a27d-2f533df0382f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:13:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:48,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-03 04:13:48,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:52,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:52,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:15:16,415 WARN L207 SmtUtils]: Spent 1.34 m on a formula simplification. DAG size of input: 662 DAG size of output: 412 [2021-11-03 04:15:16,423 INFO L354 Elim1Store]: treesize reduction 860, result has 57.3 percent of original size [2021-11-03 04:15:16,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 20 new quantified variables, introduced 153 case distinctions, treesize of input 148 treesize of output 1203