./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bc132e-9c4d-41d0-8938-fa2c64606bca/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bc132e-9c4d-41d0-8938-fa2c64606bca/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bc132e-9c4d-41d0-8938-fa2c64606bca/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bc132e-9c4d-41d0-8938-fa2c64606bca/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bc132e-9c4d-41d0-8938-fa2c64606bca/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bc132e-9c4d-41d0-8938-fa2c64606bca/bin/utaipan-EQgc7hIp5V --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 b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:51:06,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:51:06,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:51:06,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:51:06,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:51:06,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:51:06,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:51:06,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:51:06,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:51:06,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:51:06,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:51:06,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:51:06,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:51:06,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:51:06,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:51:06,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:51:06,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:51:06,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:51:06,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:51:06,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:51:06,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:51:06,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:51:06,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:51:06,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:51:06,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:51:06,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:51:06,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:51:06,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:51:06,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:51:06,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:51:06,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:51:06,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:51:06,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:51:06,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:51:06,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:51:06,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:51:06,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:51:06,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:51:06,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:51:06,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:51:06,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:51:06,199 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bc132e-9c4d-41d0-8938-fa2c64606bca/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:51:06,229 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:51:06,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:51:06,230 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:51:06,230 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:51:06,231 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:51:06,231 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:51:06,232 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:51:06,232 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:51:06,232 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:51:06,232 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:51:06,232 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:51:06,233 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:51:06,233 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:51:06,233 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:51:06,233 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:51:06,233 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:51:06,234 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:51:06,234 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:51:06,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:51:06,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:51:06,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:51:06,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:51:06,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:51:06,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:51:06,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:51:06,236 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:51:06,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:51:06,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:51:06,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:51:06,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:51:06,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:51:06,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:51:06,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:51:06,238 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:51:06,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:51:06,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:51:06,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:51:06,239 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:51:06,239 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_48bc132e-9c4d-41d0-8938-fa2c64606bca/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bc132e-9c4d-41d0-8938-fa2c64606bca/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 [2021-11-23 03:51:06,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:51:06,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:51:06,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:51:06,538 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:51:06,539 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:51:06,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bc132e-9c4d-41d0-8938-fa2c64606bca/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2021-11-23 03:51:06,624 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bc132e-9c4d-41d0-8938-fa2c64606bca/bin/utaipan-EQgc7hIp5V/data/af036f4d2/35626c29af304b8ab4179b48c29f3f7d/FLAG2120ada34 [2021-11-23 03:51:07,695 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:51:07,696 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bc132e-9c4d-41d0-8938-fa2c64606bca/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2021-11-23 03:51:07,746 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bc132e-9c4d-41d0-8938-fa2c64606bca/bin/utaipan-EQgc7hIp5V/data/af036f4d2/35626c29af304b8ab4179b48c29f3f7d/FLAG2120ada34 [2021-11-23 03:51:08,089 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bc132e-9c4d-41d0-8938-fa2c64606bca/bin/utaipan-EQgc7hIp5V/data/af036f4d2/35626c29af304b8ab4179b48c29f3f7d [2021-11-23 03:51:08,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:51:08,092 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:51:08,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:51:08,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:51:08,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:51:08,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:51:08" (1/1) ... [2021-11-23 03:51:08,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12d9d98c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:08, skipping insertion in model container [2021-11-23 03:51:08,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:51:08" (1/1) ... [2021-11-23 03:51:08,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:51:08,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:51:08,500 WARN L230 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_48bc132e-9c4d-41d0-8938-fa2c64606bca/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2021-11-23 03:51:08,510 WARN L230 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_48bc132e-9c4d-41d0-8938-fa2c64606bca/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2021-11-23 03:51:09,771 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:09,772 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:09,773 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:09,774 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:09,775 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:09,794 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:09,796 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:09,798 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:09,803 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:10,302 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 03:51:10,303 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 03:51:10,304 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 03:51:10,306 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 03:51:10,307 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 03:51:10,308 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 03:51:10,309 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 03:51:10,310 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 03:51:10,310 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 03:51:10,311 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 03:51:10,516 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 03:51:10,542 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:10,543 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:10,627 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:10,627 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:10,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:51:10,754 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:51:10,814 WARN L230 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_48bc132e-9c4d-41d0-8938-fa2c64606bca/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2021-11-23 03:51:10,814 WARN L230 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_48bc132e-9c4d-41d0-8938-fa2c64606bca/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2021-11-23 03:51:10,858 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:10,859 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:10,859 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:10,860 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:10,861 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:10,869 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:10,878 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:10,880 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:10,880 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:10,918 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 03:51:10,919 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 03:51:10,919 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 03:51:10,920 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 03:51:10,921 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 03:51:10,922 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 03:51:10,922 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 03:51:10,923 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 03:51:10,923 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 03:51:10,924 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 03:51:10,959 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 03:51:10,978 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:10,979 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:11,036 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:11,036 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:51:11,069 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:51:11,397 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:51:11,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:11 WrapperNode [2021-11-23 03:51:11,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:51:11,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:51:11,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:51:11,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:51:11,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:11" (1/1) ... [2021-11-23 03:51:11,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:11" (1/1) ... [2021-11-23 03:51:11,677 INFO L137 Inliner]: procedures = 691, calls = 2637, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 1065 [2021-11-23 03:51:11,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:51:11,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:51:11,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:51:11,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:51:11,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:11" (1/1) ... [2021-11-23 03:51:11,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:11" (1/1) ... [2021-11-23 03:51:11,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:11" (1/1) ... [2021-11-23 03:51:11,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:11" (1/1) ... [2021-11-23 03:51:11,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:11" (1/1) ... [2021-11-23 03:51:11,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:11" (1/1) ... [2021-11-23 03:51:11,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:11" (1/1) ... [2021-11-23 03:51:11,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:51:11,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:51:11,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:51:11,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:51:11,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:11" (1/1) ... [2021-11-23 03:51:11,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:51:11,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bc132e-9c4d-41d0-8938-fa2c64606bca/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:51:11,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bc132e-9c4d-41d0-8938-fa2c64606bca/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:51:11,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bc132e-9c4d-41d0-8938-fa2c64606bca/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:51:11,901 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-23 03:51:11,901 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-23 03:51:11,901 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-23 03:51:11,902 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-23 03:51:11,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:51:11,903 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-23 03:51:11,903 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-23 03:51:11,903 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-23 03:51:11,903 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-23 03:51:11,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:51:11,904 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-23 03:51:11,904 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-23 03:51:11,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 03:51:11,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 03:51:11,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:51:11,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:51:11,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:51:11,905 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-23 03:51:11,905 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-23 03:51:11,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:51:11,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:51:11,906 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-23 03:51:11,907 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-23 03:51:11,907 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-23 03:51:11,908 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-23 03:51:11,908 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-23 03:51:11,908 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-23 03:51:11,908 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 03:51:11,908 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 03:51:11,908 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-23 03:51:11,908 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-23 03:51:11,909 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-11-23 03:51:11,909 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-11-23 03:51:11,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:51:11,909 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-23 03:51:11,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-23 03:51:11,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:51:11,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:51:11,910 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-23 03:51:11,910 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-23 03:51:11,910 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-23 03:51:11,910 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-23 03:51:11,911 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2021-11-23 03:51:11,912 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2021-11-23 03:51:11,912 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-23 03:51:11,913 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-23 03:51:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:51:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:51:12,241 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:51:12,243 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:51:14,188 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:51:14,401 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:51:14,401 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 03:51:14,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:51:14 BoogieIcfgContainer [2021-11-23 03:51:14,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:51:14,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:51:14,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:51:14,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:51:14,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:51:08" (1/3) ... [2021-11-23 03:51:14,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8b205a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:51:14, skipping insertion in model container [2021-11-23 03:51:14,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:11" (2/3) ... [2021-11-23 03:51:14,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8b205a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:51:14, skipping insertion in model container [2021-11-23 03:51:14,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:51:14" (3/3) ... [2021-11-23 03:51:14,422 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_dynamic_harness.i [2021-11-23 03:51:14,429 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:51:14,429 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:51:14,496 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:51:14,513 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 [2021-11-23 03:51:14,514 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:51:14,543 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 102 states have (on average 1.2058823529411764) internal successors, (123), 103 states have internal predecessors, (123), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2021-11-23 03:51:14,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-23 03:51:14,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:51:14,565 INFO L514 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:51:14,565 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:51:14,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:51:14,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1899896275, now seen corresponding path program 1 times [2021-11-23 03:51:14,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:51:14,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988273976] [2021-11-23 03:51:14,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:51:14,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:51:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:51:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-23 03:51:15,364 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:51:15,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988273976] [2021-11-23 03:51:15,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988273976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:51:15,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:51:15,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:51:15,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920130071] [2021-11-23 03:51:15,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:51:15,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:51:15,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:51:15,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:51:15,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:51:15,409 INFO L87 Difference]: Start difference. First operand has 194 states, 102 states have (on average 1.2058823529411764) internal successors, (123), 103 states have internal predecessors, (123), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-23 03:51:15,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:51:15,615 INFO L93 Difference]: Finished difference Result 363 states and 514 transitions. [2021-11-23 03:51:15,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:51:15,618 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 55 [2021-11-23 03:51:15,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:51:15,636 INFO L225 Difference]: With dead ends: 363 [2021-11-23 03:51:15,636 INFO L226 Difference]: Without dead ends: 192 [2021-11-23 03:51:15,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:51:15,651 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:51:15,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 242 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:51:15,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-23 03:51:15,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-11-23 03:51:15,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 102 states have internal predecessors, (119), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2021-11-23 03:51:15,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 262 transitions. [2021-11-23 03:51:15,756 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 262 transitions. Word has length 55 [2021-11-23 03:51:15,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:51:15,760 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 262 transitions. [2021-11-23 03:51:15,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-23 03:51:15,761 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 262 transitions. [2021-11-23 03:51:15,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 03:51:15,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:51:15,768 INFO L514 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:51:15,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:51:15,768 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:51:15,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:51:15,770 INFO L85 PathProgramCache]: Analyzing trace with hash 974803453, now seen corresponding path program 1 times [2021-11-23 03:51:15,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:51:15,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948477897] [2021-11-23 03:51:15,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:51:15,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:51:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:51:18,343 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-23 03:51:18,343 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:51:18,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948477897] [2021-11-23 03:51:18,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948477897] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:51:18,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700108945] [2021-11-23 03:51:18,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:51:18,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:51:18,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bc132e-9c4d-41d0-8938-fa2c64606bca/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:51:18,348 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bc132e-9c4d-41d0-8938-fa2c64606bca/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:51:18,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48bc132e-9c4d-41d0-8938-fa2c64606bca/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:51:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:51:18,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 2496 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-23 03:51:18,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:51:19,270 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 19 treesize of output 1 [2021-11-23 03:51:19,276 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 13 treesize of output 9 [2021-11-23 03:51:19,285 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 13 treesize of output 9 [2021-11-23 03:51:22,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-23 03:51:22,830 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 03:51:22,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:51:24,609 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 14202 disjunctions. This might take some time... [2021-11-23 03:51:40,328 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.