./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_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_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/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_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/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_039c7337-9d21-422c-b12d-2c327767b802/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 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:42:27,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:42:27,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:42:27,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:42:27,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:42:27,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:42:27,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:42:27,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:42:27,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:42:27,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:42:27,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:42:27,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:42:27,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:42:27,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:42:27,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:42:27,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:42:27,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:42:27,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:42:27,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:42:27,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:42:27,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:42:27,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:42:27,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:42:27,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:42:27,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:42:27,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:42:27,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:42:27,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:42:27,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:42:27,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:42:27,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:42:27,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:42:27,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:42:27,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:42:27,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:42:27,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:42:27,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:42:27,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:42:27,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:42:27,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:42:27,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:42:27,153 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 03:42:27,179 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:42:27,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:42:27,181 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:42:27,181 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:42:27,182 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:42:27,182 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:42:27,182 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:42:27,183 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:42:27,183 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:42:27,183 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:42:27,184 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:42:27,184 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:42:27,184 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:42:27,185 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:42:27,185 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:42:27,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:42:27,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:42:27,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:42:27,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:42:27,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:42:27,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:42:27,187 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:42:27,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:42:27,188 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:42:27,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:42:27,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:42:27,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:42:27,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:42:27,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:42:27,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:42:27,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:42:27,189 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:42:27,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:42:27,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:42:27,190 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:42:27,190 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:42:27,190 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_039c7337-9d21-422c-b12d-2c327767b802/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 [2021-11-03 03:42:27,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:42:27,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:42:27,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:42:27,559 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:42:27,560 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:42:27,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2021-11-03 03:42:27,627 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/data/02955c22e/e6f7fe91c3a349febb1299b2ac5d43bf/FLAG816352e4f [2021-11-03 03:42:28,518 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:42:28,518 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2021-11-03 03:42:28,566 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/data/02955c22e/e6f7fe91c3a349febb1299b2ac5d43bf/FLAG816352e4f [2021-11-03 03:42:28,972 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/data/02955c22e/e6f7fe91c3a349febb1299b2ac5d43bf [2021-11-03 03:42:28,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:42:28,977 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:42:28,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:42:28,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:42:28,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:42:28,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:42:28" (1/1) ... [2021-11-03 03:42:28,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@668534b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:28, skipping insertion in model container [2021-11-03 03:42:28,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:42:28" (1/1) ... [2021-11-03 03:42:28,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:42:29,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:42:29,393 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_039c7337-9d21-422c-b12d-2c327767b802/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4498,4511] [2021-11-03 03:42:29,400 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_039c7337-9d21-422c-b12d-2c327767b802/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4558,4571] [2021-11-03 03:42:29,420 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 03:42:29,426 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 03:42:30,195 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 03:42:30,269 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:30,270 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:30,270 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:30,271 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:30,272 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:30,283 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:30,284 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:30,286 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:30,286 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:30,288 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:30,289 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:30,289 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:30,290 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:30,722 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 03:42:30,723 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 03:42:30,725 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 03:42:30,726 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 03:42:30,727 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 03:42:30,728 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 03:42:30,729 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 03:42:30,729 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 03:42:30,730 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 03:42:30,735 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 03:42:30,881 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.IllegalArgumentException: byte size smaller than 1 makes no sense at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.preferences.CACSLPreferenceInitializer$MemoryModel.getPreciseEnoughMemoryModelFor(CACSLPreferenceInitializer.java:194) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.checkIfNecessaryMemoryModelAdaption(CHandler.java:1054) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:962) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1369) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:249) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.translateInitializer(CHandler.java:2938) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleIASTDeclarator(CHandler.java:2798) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2101) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:143) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1119) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:211) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1068) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1452) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3247) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2321) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:594) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-03 03:42:30,887 INFO L168 Benchmark]: Toolchain (without parser) took 1908.61 ms. Allocated memory is still 119.5 MB. Free memory was 72.6 MB in the beginning and 63.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2021-11-03 03:42:30,888 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 119.5 MB. Free memory is still 96.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:42:30,889 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1906.06 ms. Allocated memory is still 119.5 MB. Free memory was 72.4 MB in the beginning and 63.4 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2021-11-03 03:42:30,891 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 119.5 MB. Free memory is still 96.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1906.06 ms. Allocated memory is still 119.5 MB. Free memory was 72.4 MB in the beginning and 63.4 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: IllegalArgumentException: byte size smaller than 1 makes no sense de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: IllegalArgumentException: byte size smaller than 1 makes no sense: de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.preferences.CACSLPreferenceInitializer$MemoryModel.getPreciseEnoughMemoryModelFor(CACSLPreferenceInitializer.java:194) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/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_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/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_039c7337-9d21-422c-b12d-2c327767b802/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 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:42:33,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:42:33,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:42:33,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:42:33,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:42:33,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:42:33,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:42:33,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:42:33,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:42:33,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:42:33,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:42:33,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:42:33,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:42:33,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:42:33,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:42:33,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:42:33,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:42:33,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:42:33,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:42:33,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:42:33,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:42:33,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:42:33,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:42:33,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:42:33,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:42:33,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:42:33,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:42:33,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:42:33,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:42:33,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:42:33,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:42:33,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:42:33,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:42:33,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:42:33,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:42:33,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:42:33,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:42:33,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:42:33,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:42:33,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:42:33,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:42:33,392 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 03:42:33,438 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:42:33,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:42:33,440 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:42:33,441 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:42:33,441 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:42:33,441 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:42:33,441 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:42:33,441 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:42:33,442 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:42:33,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:42:33,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:42:33,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:42:33,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:42:33,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:42:33,445 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:42:33,445 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:42:33,446 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:42:33,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:42:33,446 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:42:33,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:42:33,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:42:33,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:42:33,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:42:33,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:42:33,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:42:33,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:42:33,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:42:33,448 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:42:33,448 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:42:33,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:42:33,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:42:33,449 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:42:33,449 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_039c7337-9d21-422c-b12d-2c327767b802/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 [2021-11-03 03:42:33,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:42:33,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:42:33,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:42:33,864 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:42:33,865 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:42:33,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2021-11-03 03:42:33,945 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/data/4f3a9cd07/5f83ff68facd43af9b1705805f89c634/FLAGbb883c848 [2021-11-03 03:42:34,813 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:42:34,813 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2021-11-03 03:42:34,866 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/data/4f3a9cd07/5f83ff68facd43af9b1705805f89c634/FLAGbb883c848 [2021-11-03 03:42:35,371 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/data/4f3a9cd07/5f83ff68facd43af9b1705805f89c634 [2021-11-03 03:42:35,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:42:35,375 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:42:35,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:42:35,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:42:35,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:42:35,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:42:35" (1/1) ... [2021-11-03 03:42:35,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16a20b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:35, skipping insertion in model container [2021-11-03 03:42:35,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:42:35" (1/1) ... [2021-11-03 03:42:35,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:42:35,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:42:35,779 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_039c7337-9d21-422c-b12d-2c327767b802/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4498,4511] [2021-11-03 03:42:35,786 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_039c7337-9d21-422c-b12d-2c327767b802/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4558,4571] [2021-11-03 03:42:35,813 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 03:42:35,830 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 03:42:36,599 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 03:42:36,705 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:36,706 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:36,707 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:36,707 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:36,708 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:36,721 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:36,722 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:36,724 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:36,737 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:36,739 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:36,740 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:36,741 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:36,741 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,050 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 03:42:37,051 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 03:42:37,052 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 03:42:37,054 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 03:42:37,055 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 03:42:37,056 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 03:42:37,056 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 03:42:37,057 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 03:42:37,058 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 03:42:37,058 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 03:42:37,208 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,217 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:42:37,311 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:42:37,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:42:37,365 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_039c7337-9d21-422c-b12d-2c327767b802/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4498,4511] [2021-11-03 03:42:37,365 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_039c7337-9d21-422c-b12d-2c327767b802/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4558,4571] [2021-11-03 03:42:37,367 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 03:42:37,368 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 03:42:37,399 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 03:42:37,417 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,418 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,418 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,419 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,420 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,429 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,429 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,430 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,431 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,432 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,433 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,434 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,434 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,497 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 03:42:37,498 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 03:42:37,499 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 03:42:37,500 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 03:42:37,501 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 03:42:37,502 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 03:42:37,502 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 03:42:37,503 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 03:42:37,503 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 03:42:37,504 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 03:42:37,537 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,543 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:42:37,610 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:42:37,623 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4498,4511] [2021-11-03 03:42:37,623 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4558,4571] [2021-11-03 03:42:37,625 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 03:42:37,626 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 03:42:37,656 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 03:42:37,669 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,670 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,670 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,671 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,671 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,677 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,678 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,679 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,679 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,680 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,681 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,682 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,682 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,747 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 03:42:37,748 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 03:42:37,749 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 03:42:37,750 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 03:42:37,751 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 03:42:37,751 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 03:42:37,752 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 03:42:37,753 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 03:42:37,753 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 03:42:37,754 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 03:42:37,785 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,791 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:42:37,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:42:38,190 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:42:38,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:38 WrapperNode [2021-11-03 03:42:38,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:42:38,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:42:38,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:42:38,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:42:38,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:38" (1/1) ... [2021-11-03 03:42:38,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:38" (1/1) ... [2021-11-03 03:42:38,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:42:38,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:42:38,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:42:38,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:42:38,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:38" (1/1) ... [2021-11-03 03:42:38,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:38" (1/1) ... [2021-11-03 03:42:38,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:38" (1/1) ... [2021-11-03 03:42:38,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:38" (1/1) ... [2021-11-03 03:42:38,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:38" (1/1) ... [2021-11-03 03:42:38,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:38" (1/1) ... [2021-11-03 03:42:38,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:38" (1/1) ... [2021-11-03 03:42:38,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:42:38,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:42:38,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:42:38,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:42:38,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:38" (1/1) ... [2021-11-03 03:42:38,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:42:38,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:42:38,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:42:38,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:42:38,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:42:38,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:42:38,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 03:42:38,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-03 03:42:38,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 03:42:38,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 03:42:38,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:42:38,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:42:38,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 03:42:38,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 03:42:38,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:42:38,745 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-03 03:42:38,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 03:42:38,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 03:42:38,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 03:42:38,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 03:42:56,352 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:42:56,354 INFO L299 CfgBuilder]: Removed 306 assume(true) statements. [2021-11-03 03:42:56,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:42:56 BoogieIcfgContainer [2021-11-03 03:42:56,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:42:56,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:42:56,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:42:56,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:42:56,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:42:35" (1/3) ... [2021-11-03 03:42:56,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b669093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:42:56, skipping insertion in model container [2021-11-03 03:42:56,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:38" (2/3) ... [2021-11-03 03:42:56,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b669093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:42:56, skipping insertion in model container [2021-11-03 03:42:56,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:42:56" (3/3) ... [2021-11-03 03:42:56,372 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_front_harness.i [2021-11-03 03:42:56,379 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:42:56,379 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-11-03 03:42:56,458 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:42:56,469 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 03:42:56,469 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-11-03 03:42:56,503 INFO L276 IsEmpty]: Start isEmpty. Operand has 381 states, 360 states have (on average 1.4166666666666667) internal successors, (510), 380 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:56,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-03 03:42:56,509 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:56,510 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:56,510 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-03 03:42:56,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:56,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1102187548, now seen corresponding path program 1 times [2021-11-03 03:42:56,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:56,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687494012] [2021-11-03 03:42:56,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:56,536 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:56,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:56,540 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:56,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:43:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:00,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 1566 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 03:43:00,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:43:00,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:43:00,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:43:01,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:43:01,071 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:43:01,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687494012] [2021-11-03 03:43:01,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687494012] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:01,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:01,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:43:01,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312284095] [2021-11-03 03:43:01,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 03:43:01,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:43:01,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 03:43:01,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:43:01,100 INFO L87 Difference]: Start difference. First operand has 381 states, 360 states have (on average 1.4166666666666667) internal successors, (510), 380 states have internal predecessors, (510), 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 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:01,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:01,190 INFO L93 Difference]: Finished difference Result 758 states and 1015 transitions. [2021-11-03 03:43:01,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 03:43:01,192 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-03 03:43:01,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:01,214 INFO L225 Difference]: With dead ends: 758 [2021-11-03 03:43:01,216 INFO L226 Difference]: Without dead ends: 376 [2021-11-03 03:43:01,223 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:43:01,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-11-03 03:43:01,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2021-11-03 03:43:01,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 356 states have (on average 1.3230337078651686) internal successors, (471), 375 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:01,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 471 transitions. [2021-11-03 03:43:01,309 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 471 transitions. Word has length 33 [2021-11-03 03:43:01,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:01,310 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 471 transitions. [2021-11-03 03:43:01,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:01,310 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 471 transitions. [2021-11-03 03:43:01,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-03 03:43:01,313 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:01,313 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:01,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:43:01,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:43:01,514 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-03 03:43:01,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:01,515 INFO L85 PathProgramCache]: Analyzing trace with hash -977674992, now seen corresponding path program 1 times [2021-11-03 03:43:01,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:43:01,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857371098] [2021-11-03 03:43:01,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:01,518 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:43:01,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:43:01,523 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:43:01,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:43:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:05,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 1566 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:43:05,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:43:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:43:05,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:43:05,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:43:05,566 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:43:05,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857371098] [2021-11-03 03:43:05,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857371098] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:05,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:05,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 03:43:05,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402912082] [2021-11-03 03:43:05,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:43:05,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:43:05,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:43:05,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:43:05,570 INFO L87 Difference]: Start difference. First operand 376 states and 471 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:05,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:05,639 INFO L93 Difference]: Finished difference Result 739 states and 927 transitions. [2021-11-03 03:43:05,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:43:05,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-03 03:43:05,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:05,642 INFO L225 Difference]: With dead ends: 739 [2021-11-03 03:43:05,643 INFO L226 Difference]: Without dead ends: 377 [2021-11-03 03:43:05,644 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:43:05,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-03 03:43:05,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-11-03 03:43:05,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 357 states have (on average 1.3221288515406162) internal successors, (472), 376 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:05,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 472 transitions. [2021-11-03 03:43:05,658 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 472 transitions. Word has length 33 [2021-11-03 03:43:05,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:05,658 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 472 transitions. [2021-11-03 03:43:05,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:05,659 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 472 transitions. [2021-11-03 03:43:05,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-03 03:43:05,660 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:05,660 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:05,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:43:05,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:43:05,876 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-03 03:43:05,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:05,877 INFO L85 PathProgramCache]: Analyzing trace with hash -468201902, now seen corresponding path program 1 times [2021-11-03 03:43:05,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:43:05,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593733840] [2021-11-03 03:43:05,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:05,881 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:43:05,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:43:05,883 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:43:05,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:43:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:09,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 1568 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-03 03:43:09,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:43:10,739 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-03 03:43:10,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 203 treesize of output 59 [2021-11-03 03:43:10,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:43:10,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:43:11,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:43:11,822 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:43:11,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593733840] [2021-11-03 03:43:11,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593733840] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:11,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:11,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-11-03 03:43:11,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418789049] [2021-11-03 03:43:11,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 03:43:11,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:43:11,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 03:43:11,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:43:11,825 INFO L87 Difference]: Start difference. First operand 377 states and 472 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:29,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:29,692 INFO L93 Difference]: Finished difference Result 1087 states and 1364 transitions. [2021-11-03 03:44:29,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 03:44:29,695 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-03 03:44:29,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:29,700 INFO L225 Difference]: With dead ends: 1087 [2021-11-03 03:44:29,700 INFO L226 Difference]: Without dead ends: 725 [2021-11-03 03:44:29,701 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-03 03:44:29,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2021-11-03 03:44:29,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 373. [2021-11-03 03:44:29,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 353 states have (on average 1.3229461756373937) internal successors, (467), 372 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:29,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 467 transitions. [2021-11-03 03:44:29,716 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 467 transitions. Word has length 33 [2021-11-03 03:44:29,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:29,716 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 467 transitions. [2021-11-03 03:44:29,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:29,716 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 467 transitions. [2021-11-03 03:44:29,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-03 03:44:29,718 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:29,718 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:29,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-03 03:44:29,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:29,933 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-03 03:44:29,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:29,933 INFO L85 PathProgramCache]: Analyzing trace with hash -427167192, now seen corresponding path program 1 times [2021-11-03 03:44:29,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:29,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422844560] [2021-11-03 03:44:29,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:29,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:29,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:29,941 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:29,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:44:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:33,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 1578 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:44:33,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:33,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:33,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:34,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:34,011 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:34,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422844560] [2021-11-03 03:44:34,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422844560] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:34,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:34,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 03:44:34,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857277974] [2021-11-03 03:44:34,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:44:34,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:34,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:44:34,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:44:34,014 INFO L87 Difference]: Start difference. First operand 373 states and 467 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:35,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:35,395 INFO L93 Difference]: Finished difference Result 718 states and 899 transitions. [2021-11-03 03:44:35,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:44:35,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-03 03:44:35,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:35,398 INFO L225 Difference]: With dead ends: 718 [2021-11-03 03:44:35,398 INFO L226 Difference]: Without dead ends: 373 [2021-11-03 03:44:35,399 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:44:35,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-11-03 03:44:35,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2021-11-03 03:44:35,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 353 states have (on average 1.3144475920679888) internal successors, (464), 372 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:35,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 464 transitions. [2021-11-03 03:44:35,411 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 464 transitions. Word has length 36 [2021-11-03 03:44:35,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:35,412 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 464 transitions. [2021-11-03 03:44:35,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:35,412 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 464 transitions. [2021-11-03 03:44:35,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 03:44:35,414 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:35,414 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:35,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:44:35,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:35,624 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-03 03:44:35,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:35,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1328699534, now seen corresponding path program 1 times [2021-11-03 03:44:35,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:35,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036335316] [2021-11-03 03:44:35,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:35,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:35,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:35,630 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:35,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 03:44:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:39,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 1693 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:44:39,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:40,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:40,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:40,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:40,161 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:40,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036335316] [2021-11-03 03:44:40,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2036335316] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:40,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:40,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 03:44:40,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828104053] [2021-11-03 03:44:40,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:44:40,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:40,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:44:40,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:44:40,163 INFO L87 Difference]: Start difference. First operand 373 states and 464 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:41,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:41,761 INFO L93 Difference]: Finished difference Result 799 states and 1007 transitions. [2021-11-03 03:44:41,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:44:41,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-03 03:44:41,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:41,767 INFO L225 Difference]: With dead ends: 799 [2021-11-03 03:44:41,768 INFO L226 Difference]: Without dead ends: 453 [2021-11-03 03:44:41,768 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:44:41,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-11-03 03:44:41,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 405. [2021-11-03 03:44:41,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 385 states have (on average 1.2883116883116883) internal successors, (496), 404 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:41,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 496 transitions. [2021-11-03 03:44:41,798 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 496 transitions. Word has length 52 [2021-11-03 03:44:41,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:41,800 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 496 transitions. [2021-11-03 03:44:41,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:41,803 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 496 transitions. [2021-11-03 03:44:41,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 03:44:41,809 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:41,810 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:41,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 03:44:42,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:42,011 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-03 03:44:42,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:42,011 INFO L85 PathProgramCache]: Analyzing trace with hash 360244208, now seen corresponding path program 1 times [2021-11-03 03:44:42,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:42,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792961877] [2021-11-03 03:44:42,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:42,014 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:42,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:42,015 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:42,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 03:44:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:46,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 1696 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 03:44:46,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:46,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:46,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:46,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:46,925 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:46,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792961877] [2021-11-03 03:44:46,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1792961877] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:46,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:46,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-03 03:44:46,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554695317] [2021-11-03 03:44:46,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:44:46,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:46,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:44:46,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:44:46,927 INFO L87 Difference]: Start difference. First operand 405 states and 496 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:49,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:49,023 INFO L93 Difference]: Finished difference Result 805 states and 977 transitions. [2021-11-03 03:44:49,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:44:49,024 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-03 03:44:49,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:49,027 INFO L225 Difference]: With dead ends: 805 [2021-11-03 03:44:49,027 INFO L226 Difference]: Without dead ends: 475 [2021-11-03 03:44:49,027 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:44:49,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2021-11-03 03:44:49,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 405. [2021-11-03 03:44:49,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 385 states have (on average 1.2753246753246754) internal successors, (491), 404 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:49,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 491 transitions. [2021-11-03 03:44:49,044 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 491 transitions. Word has length 52 [2021-11-03 03:44:49,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:49,045 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 491 transitions. [2021-11-03 03:44:49,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:49,045 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 491 transitions. [2021-11-03 03:44:49,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-03 03:44:49,047 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:49,047 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:49,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 03:44:49,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:49,260 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-03 03:44:49,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:49,261 INFO L85 PathProgramCache]: Analyzing trace with hash 63348408, now seen corresponding path program 1 times [2021-11-03 03:44:49,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:49,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979028868] [2021-11-03 03:44:49,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:49,264 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:49,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:49,265 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:49,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 03:47:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:47:33,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 1814 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-03 03:47:33,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:47:34,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 03:47:34,396 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-03 03:47:34,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2021-11-03 03:47:34,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:47:34,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 25 [2021-11-03 03:47:34,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:34,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2021-11-03 03:47:35,309 INFO L354 Elim1Store]: treesize reduction 22, result has 40.5 percent of original size [2021-11-03 03:47:35,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 47 [2021-11-03 03:47:35,766 INFO L354 Elim1Store]: treesize reduction 1610, result has 0.6 percent of original size [2021-11-03 03:47:35,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 117 treesize of output 22 [2021-11-03 03:47:35,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-03 03:47:36,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:47:36,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:47:36,538 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:36,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 388 [2021-11-03 03:47:43,590 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_118| (_ BitVec 64)) (v_DerPreprocessor_8 (_ BitVec 64)) (v_DerPreprocessor_7 (_ BitVec 64)) (v_DerPreprocessor_6 (_ BitVec 64)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64)) (ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (or (not (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_118| (store (store (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_118|) ULTIMATE.start_aws_mul_u64_checked_~r.offset v_DerPreprocessor_1) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv1 64)) v_DerPreprocessor_2) (bvadd (_ bv2 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_3) (bvadd (_ bv3 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_4) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv4 64)) v_DerPreprocessor_5) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv5 64)) v_DerPreprocessor_6) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv6 64)) v_DerPreprocessor_7) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv7 64)) v_DerPreprocessor_8)) c_ULTIMATE.start_aws_array_list_is_valid_~list.base) (bvadd c_ULTIMATE.start_aws_array_list_is_valid_~list.offset (_ bv32 64))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_118|))))) is different from false [2021-11-03 03:47:45,759 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_118| (_ BitVec 64)) (v_DerPreprocessor_8 (_ BitVec 64)) (v_DerPreprocessor_7 (_ BitVec 64)) (v_DerPreprocessor_6 (_ BitVec 64)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64)) (ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (or (not (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_118| (store (store (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_118|) ULTIMATE.start_aws_mul_u64_checked_~r.offset v_DerPreprocessor_1) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv1 64)) v_DerPreprocessor_2) (bvadd (_ bv2 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_3) (bvadd (_ bv3 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_4) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv4 64)) v_DerPreprocessor_5) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv5 64)) v_DerPreprocessor_6) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv6 64)) v_DerPreprocessor_7) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv7 64)) v_DerPreprocessor_8)) |c_ULTIMATE.start_aws_array_list_pop_front_harness_~#list~0.base|) (bvadd |c_ULTIMATE.start_aws_array_list_pop_front_harness_~#list~0.offset| (_ bv32 64))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_118|))))) is different from false [2021-11-03 03:47:47,913 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_118| (_ BitVec 64)) (v_DerPreprocessor_8 (_ BitVec 64)) (v_DerPreprocessor_7 (_ BitVec 64)) (v_DerPreprocessor_6 (_ BitVec 64)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64)) (ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (|ULTIMATE.start_ensure_array_list_has_allocated_data_member_#t~ite589.base| (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_118|))) (not (= (_ bv0 64) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_ensure_array_list_has_allocated_data_member_~list.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_ensure_array_list_has_allocated_data_member_~list.base) c_ULTIMATE.start_ensure_array_list_has_allocated_data_member_~list.offset |ULTIMATE.start_ensure_array_list_has_allocated_data_member_#t~ite589.base|)))) (store .cse0 |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_118| (store (store (store (store (store (store (store (store (select .cse0 |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_118|) ULTIMATE.start_aws_mul_u64_checked_~r.offset v_DerPreprocessor_1) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv1 64)) v_DerPreprocessor_2) (bvadd (_ bv2 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_3) (bvadd (_ bv3 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_4) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv4 64)) v_DerPreprocessor_5) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv5 64)) v_DerPreprocessor_6) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv6 64)) v_DerPreprocessor_7) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv7 64)) v_DerPreprocessor_8))) |c_ULTIMATE.start_aws_array_list_pop_front_harness_~#list~0.base|) (bvadd |c_ULTIMATE.start_aws_array_list_pop_front_harness_~#list~0.offset| (_ bv32 64))))))) is different from false [2021-11-03 03:47:50,353 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_118| (_ BitVec 64)) (v_DerPreprocessor_8 (_ BitVec 64)) (v_DerPreprocessor_7 (_ BitVec 64)) (v_DerPreprocessor_6 (_ BitVec 64)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64)) (ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (|ULTIMATE.start_ensure_array_list_has_allocated_data_member_#t~ite589.base| (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (or (not (= (_ bv0 64) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_ensure_array_list_has_allocated_data_member_~list.base (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_ensure_array_list_has_allocated_data_member_~list.base) (bvadd (_ bv32 64) c_ULTIMATE.start_ensure_array_list_has_allocated_data_member_~list.offset) |c_ULTIMATE.start_bounded_malloc_#res.base|) c_ULTIMATE.start_ensure_array_list_has_allocated_data_member_~list.offset |ULTIMATE.start_ensure_array_list_has_allocated_data_member_#t~ite589.base|)))) (store .cse0 |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_118| (store (store (store (store (store (store (store (store (select .cse0 |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_118|) ULTIMATE.start_aws_mul_u64_checked_~r.offset v_DerPreprocessor_1) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv1 64)) v_DerPreprocessor_2) (bvadd (_ bv2 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_3) (bvadd (_ bv3 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_4) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv4 64)) v_DerPreprocessor_5) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv5 64)) v_DerPreprocessor_6) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv6 64)) v_DerPreprocessor_7) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv7 64)) v_DerPreprocessor_8))) |c_ULTIMATE.start_aws_array_list_pop_front_harness_~#list~0.base|) (bvadd |c_ULTIMATE.start_aws_array_list_pop_front_harness_~#list~0.offset| (_ bv32 64))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_118|))))) is different from false [2021-11-03 03:47:52,849 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_8 (_ BitVec 64)) (|v_ULTIMATE.start_bounded_malloc_#res.base_8| (_ BitVec 64)) (|v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_118| (_ BitVec 64)) (v_DerPreprocessor_7 (_ BitVec 64)) (v_DerPreprocessor_6 (_ BitVec 64)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64)) (ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (|ULTIMATE.start_ensure_array_list_has_allocated_data_member_#t~ite589.base| (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (or (not (= (_ bv0 1) (bvneg (select (store |c_#valid| |v_ULTIMATE.start_bounded_malloc_#res.base_8| (_ bv1 1)) |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_118|)))) (not (= (_ bv0 64) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_ensure_array_list_has_allocated_data_member_~list.base (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_ensure_array_list_has_allocated_data_member_~list.base) (bvadd (_ bv32 64) c_ULTIMATE.start_ensure_array_list_has_allocated_data_member_~list.offset) |v_ULTIMATE.start_bounded_malloc_#res.base_8|) c_ULTIMATE.start_ensure_array_list_has_allocated_data_member_~list.offset |ULTIMATE.start_ensure_array_list_has_allocated_data_member_#t~ite589.base|)))) (store .cse0 |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_118| (store (store (store (store (store (store (store (store (select .cse0 |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_118|) ULTIMATE.start_aws_mul_u64_checked_~r.offset v_DerPreprocessor_1) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv1 64)) v_DerPreprocessor_2) (bvadd (_ bv2 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_3) (bvadd (_ bv3 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_4) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv4 64)) v_DerPreprocessor_5) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv5 64)) v_DerPreprocessor_6) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv6 64)) v_DerPreprocessor_7) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv7 64)) v_DerPreprocessor_8))) |c_ULTIMATE.start_aws_array_list_pop_front_harness_~#list~0.base|) (bvadd |c_ULTIMATE.start_aws_array_list_pop_front_harness_~#list~0.offset| (_ bv32 64))))) (= (_ bv0 64) |v_ULTIMATE.start_bounded_malloc_#res.base_8|))) is different from false [2021-11-03 03:48:03,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:03,200 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:48:03,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979028868] [2021-11-03 03:48:03,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979028868] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:03,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:03,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 20 [2021-11-03 03:48:03,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625303039] [2021-11-03 03:48:03,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-03 03:48:03,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:48:03,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-03 03:48:03,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=169, Unknown=7, NotChecked=150, Total=380 [2021-11-03 03:48:03,203 INFO L87 Difference]: Start difference. First operand 405 states and 491 transitions. Second operand has 20 states, 20 states have (on average 4.35) internal successors, (87), 20 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:49:10,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:49:10,388 INFO L93 Difference]: Finished difference Result 829 states and 1010 transitions. [2021-11-03 03:49:10,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:49:10,390 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.35) internal successors, (87), 20 states have internal predecessors, (87), 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 68 [2021-11-03 03:49:10,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:49:10,392 INFO L225 Difference]: With dead ends: 829 [2021-11-03 03:49:10,392 INFO L226 Difference]: Without dead ends: 453 [2021-11-03 03:49:10,393 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 116 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 5 IntricatePredicates, 1 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 31.7s TimeCoverageRelationStatistics Valid=116, Invalid=316, Unknown=8, NotChecked=210, Total=650 [2021-11-03 03:49:10,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-11-03 03:49:10,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 403. [2021-11-03 03:49:10,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 383 states have (on average 1.2741514360313315) internal successors, (488), 402 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:49:10,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 488 transitions. [2021-11-03 03:49:10,412 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 488 transitions. Word has length 68 [2021-11-03 03:49:10,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:49:10,412 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 488 transitions. [2021-11-03 03:49:10,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.35) internal successors, (87), 20 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:49:10,413 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 488 transitions. [2021-11-03 03:49:10,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-03 03:49:10,414 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:49:10,414 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:49:10,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-03 03:49:10,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:49:10,636 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-03 03:49:10,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:49:10,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1452625410, now seen corresponding path program 1 times [2021-11-03 03:49:10,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:49:10,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799132191] [2021-11-03 03:49:10,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:49:10,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:49:10,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:49:10,643 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:49:10,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 03:51:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:51:47,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 1818 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-03 03:51:47,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:51:47,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 03:51:47,406 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-03 03:51:47,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 26 [2021-11-03 03:51:47,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-03 03:51:47,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:47,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 34 [2021-11-03 03:51:48,347 INFO L354 Elim1Store]: treesize reduction 145, result has 23.7 percent of original size [2021-11-03 03:51:48,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 51 treesize of output 77 [2021-11-03 03:51:48,973 INFO L354 Elim1Store]: treesize reduction 994, result has 0.1 percent of original size [2021-11-03 03:51:48,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 155 treesize of output 48 [2021-11-03 03:51:50,452 INFO L354 Elim1Store]: treesize reduction 99, result has 26.1 percent of original size [2021-11-03 03:51:50,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 75 treesize of output 94 [2021-11-03 03:51:51,783 INFO L354 Elim1Store]: treesize reduction 206, result has 30.9 percent of original size [2021-11-03 03:51:51,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 94 treesize of output 165 [2021-11-03 03:52:07,925 INFO L354 Elim1Store]: treesize reduction 116, result has 35.9 percent of original size [2021-11-03 03:52:07,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 184 treesize of output 230 [2021-11-03 03:52:09,345 INFO L354 Elim1Store]: treesize reduction 1506, result has 0.5 percent of original size [2021-11-03 03:52:09,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 121 treesize of output 24 [2021-11-03 03:52:09,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:52:09,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:52:10,034 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:52:10,035 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 388 [2021-11-03 03:52:18,162 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_13 (_ BitVec 64)) (v_DerPreprocessor_14 (_ BitVec 64)) (v_DerPreprocessor_11 (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (v_DerPreprocessor_9 (_ BitVec 64)) (v_DerPreprocessor_15 (_ BitVec 64)) (|v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_128| (_ BitVec 64)) (v_DerPreprocessor_16 (_ BitVec 64)) (ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_128|))) (not (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_128| (store (store (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_128|) ULTIMATE.start_aws_mul_u64_checked_~r.offset v_DerPreprocessor_9) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv1 64)) v_DerPreprocessor_10) (bvadd (_ bv2 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_11) (bvadd (_ bv3 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_12) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv4 64)) v_DerPreprocessor_13) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv5 64)) v_DerPreprocessor_14) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv6 64)) v_DerPreprocessor_15) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv7 64)) v_DerPreprocessor_16)) c_ULTIMATE.start_aws_array_list_is_valid_~list.base) (bvadd c_ULTIMATE.start_aws_array_list_is_valid_~list.offset (_ bv32 64))))))) is different from false [2021-11-03 03:52:20,280 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_13 (_ BitVec 64)) (v_DerPreprocessor_14 (_ BitVec 64)) (v_DerPreprocessor_11 (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (v_DerPreprocessor_9 (_ BitVec 64)) (v_DerPreprocessor_15 (_ BitVec 64)) (|v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_128| (_ BitVec 64)) (v_DerPreprocessor_16 (_ BitVec 64)) (ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_128|))) (not (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_128| (store (store (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_128|) ULTIMATE.start_aws_mul_u64_checked_~r.offset v_DerPreprocessor_9) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv1 64)) v_DerPreprocessor_10) (bvadd (_ bv2 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_11) (bvadd (_ bv3 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_12) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv4 64)) v_DerPreprocessor_13) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv5 64)) v_DerPreprocessor_14) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv6 64)) v_DerPreprocessor_15) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv7 64)) v_DerPreprocessor_16)) |c_ULTIMATE.start_aws_array_list_pop_front_harness_~#list~0.base|) (bvadd |c_ULTIMATE.start_aws_array_list_pop_front_harness_~#list~0.offset| (_ bv32 64))))))) is different from false [2021-11-03 03:52:22,917 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_9 (_ BitVec 64)) (|v_ULTIMATE.start_aws_array_list_pop_front_harness_~#old_byte~0.base_16| (_ BitVec 64)) (v_DerPreprocessor_13 (_ BitVec 64)) (v_DerPreprocessor_14 (_ BitVec 64)) (|v_ULTIMATE.start_aws_array_list_pop_front_harness_~#old~0.base_20| (_ BitVec 64)) (v_DerPreprocessor_11 (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (v_DerPreprocessor_15 (_ BitVec 64)) (|v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_128| (_ BitVec 64)) (v_DerPreprocessor_16 (_ BitVec 64)) (ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_aws_array_list_pop_front_harness_~#old~0.base_20|))))) (not (= (_ bv0 1) (select (store (store |c_#valid| |v_ULTIMATE.start_aws_array_list_pop_front_harness_~#old~0.base_20| (_ bv1 1)) |v_ULTIMATE.start_aws_array_list_pop_front_harness_~#old_byte~0.base_16| (_ bv1 1)) |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_128|))) (not (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_128| (store (store (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_128|) ULTIMATE.start_aws_mul_u64_checked_~r.offset v_DerPreprocessor_9) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv1 64)) v_DerPreprocessor_10) (bvadd (_ bv2 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_11) (bvadd (_ bv3 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_12) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv4 64)) v_DerPreprocessor_13) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv5 64)) v_DerPreprocessor_14) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv6 64)) v_DerPreprocessor_15) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv7 64)) v_DerPreprocessor_16)) |c_ULTIMATE.start_aws_array_list_pop_front_harness_~#list~0.base|) (bvadd |c_ULTIMATE.start_aws_array_list_pop_front_harness_~#list~0.offset| (_ bv32 64))))))) is different from false [2021-11-03 03:52:26,073 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_9 (_ BitVec 64)) (|v_ULTIMATE.start_aws_array_list_pop_front_harness_~#old_byte~0.base_16| (_ BitVec 64)) (v_DerPreprocessor_13 (_ BitVec 64)) (v_DerPreprocessor_14 (_ BitVec 64)) (|v_ULTIMATE.start_aws_array_list_pop_front_harness_~#old~0.base_20| (_ BitVec 64)) (v_DerPreprocessor_11 (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (v_DerPreprocessor_15 (_ BitVec 64)) (|v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_128| (_ BitVec 64)) (v_DerPreprocessor_16 (_ BitVec 64)) (ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (let ((.cse0 (store |c_#valid| |c_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base| (_ bv0 1)))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_aws_array_list_pop_front_harness_~#old~0.base_20|)))))) (not (= (_ bv0 1) (bvneg (select (store (store .cse0 |v_ULTIMATE.start_aws_array_list_pop_front_harness_~#old~0.base_20| (_ bv1 1)) |v_ULTIMATE.start_aws_array_list_pop_front_harness_~#old_byte~0.base_16| (_ bv1 1)) |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_128|)))) (not (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_128| (store (store (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_128|) ULTIMATE.start_aws_mul_u64_checked_~r.offset v_DerPreprocessor_9) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv1 64)) v_DerPreprocessor_10) (bvadd (_ bv2 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_11) (bvadd (_ bv3 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_12) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv4 64)) v_DerPreprocessor_13) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv5 64)) v_DerPreprocessor_14) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv6 64)) v_DerPreprocessor_15) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv7 64)) v_DerPreprocessor_16)) |c_ULTIMATE.start_aws_array_list_pop_front_harness_~#list~0.base|) (bvadd |c_ULTIMATE.start_aws_array_list_pop_front_harness_~#list~0.offset| (_ bv32 64)))))))) is different from false [2021-11-03 03:52:29,909 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_aws_array_list_pop_front_harness_~#old_byte~0.base_16| (_ BitVec 64)) (v_DerPreprocessor_9 (_ BitVec 64)) (v_DerPreprocessor_13 (_ BitVec 64)) (|v_ULTIMATE.start_aws_array_list_pop_front_harness_~#old~0.base_20| (_ BitVec 64)) (v_DerPreprocessor_14 (_ BitVec 64)) (v_DerPreprocessor_11 (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (v_DerPreprocessor_15 (_ BitVec 64)) (|v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_128| (_ BitVec 64)) (v_DerPreprocessor_16 (_ BitVec 64)) (ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (let ((.cse0 (store |c_#valid| |c_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base| (_ bv0 1)))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_aws_array_list_pop_front_harness_~#old~0.base_20|)))))) (not (= (_ bv0 1) (bvneg (select (store (store .cse0 |v_ULTIMATE.start_aws_array_list_pop_front_harness_~#old~0.base_20| (_ bv1 1)) |v_ULTIMATE.start_aws_array_list_pop_front_harness_~#old_byte~0.base_16| (_ bv1 1)) |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_128|)))) (not (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_128| (store (store (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_128|) ULTIMATE.start_aws_mul_u64_checked_~r.offset v_DerPreprocessor_9) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv1 64)) v_DerPreprocessor_10) (bvadd (_ bv2 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_11) (bvadd (_ bv3 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_12) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv4 64)) v_DerPreprocessor_13) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv5 64)) v_DerPreprocessor_14) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv6 64)) v_DerPreprocessor_15) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv7 64)) v_DerPreprocessor_16)) |c_ULTIMATE.start_aws_array_list_pop_front_harness_~#list~0.base|) (bvadd |c_ULTIMATE.start_aws_array_list_pop_front_harness_~#list~0.offset| (_ bv32 64)))))))) is different from false [2021-11-03 03:52:30,681 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:52:30,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799132191] [2021-11-03 03:52:30,682 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_aws_mul_u64_checked_~r.offset] [2021-11-03 03:52:30,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [889062183] [2021-11-03 03:52:30,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:52:30,682 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:52:30,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:52:30,684 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:52:30,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039c7337-9d21-422c-b12d-2c327767b802/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process