./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_string_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_423bc71e-3252-49ae-9542-424738d7b2a6/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423bc71e-3252-49ae-9542-424738d7b2a6/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_423bc71e-3252-49ae-9542-424738d7b2a6/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423bc71e-3252-49ae-9542-424738d7b2a6/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_string_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423bc71e-3252-49ae-9542-424738d7b2a6/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_423bc71e-3252-49ae-9542-424738d7b2a6/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 2359aa88e8e7d743df9393581b2f3fdb25ac15a45b4f8f680bad72fb64c83223 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:19:08,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:19:08,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:19:08,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:19:08,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:19:08,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:19:08,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:19:08,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:19:08,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:19:08,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:19:08,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:19:08,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:19:08,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:19:08,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:19:08,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:19:08,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:19:08,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:19:08,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:19:08,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:19:08,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:19:08,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:19:08,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:19:08,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:19:08,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:19:08,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:19:08,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:19:08,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:19:08,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:19:08,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:19:08,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:19:08,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:19:08,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:19:08,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:19:08,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:19:08,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:19:08,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:19:08,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:19:08,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:19:08,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:19:08,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:19:08,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:19:08,239 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423bc71e-3252-49ae-9542-424738d7b2a6/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:19:08,283 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:19:08,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:19:08,285 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:19:08,286 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:19:08,289 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:19:08,290 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:19:08,290 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:19:08,290 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:19:08,290 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:19:08,291 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:19:08,291 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:19:08,291 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:19:08,293 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:19:08,293 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:19:08,293 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:19:08,294 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:19:08,294 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:19:08,294 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:19:08,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:19:08,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:19:08,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:19:08,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:19:08,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:19:08,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:19:08,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:19:08,296 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:19:08,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:19:08,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:19:08,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:19:08,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:19:08,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:19:08,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:19:08,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:19:08,301 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:19:08,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:19:08,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:19:08,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:19:08,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:19:08,302 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_423bc71e-3252-49ae-9542-424738d7b2a6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423bc71e-3252-49ae-9542-424738d7b2a6/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2359aa88e8e7d743df9393581b2f3fdb25ac15a45b4f8f680bad72fb64c83223 [2021-11-23 02:19:08,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:19:08,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:19:08,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:19:08,581 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:19:08,583 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:19:08,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423bc71e-3252-49ae-9542-424738d7b2a6/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/aws-c-common/aws_hash_string_harness.i [2021-11-23 02:19:08,668 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423bc71e-3252-49ae-9542-424738d7b2a6/bin/utaipan-EQgc7hIp5V/data/7dd2a3834/b7fae321e8274e2597fa9c2dd7c27503/FLAGb65204751 [2021-11-23 02:19:09,561 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:19:09,562 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423bc71e-3252-49ae-9542-424738d7b2a6/sv-benchmarks/c/aws-c-common/aws_hash_string_harness.i [2021-11-23 02:19:09,607 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423bc71e-3252-49ae-9542-424738d7b2a6/bin/utaipan-EQgc7hIp5V/data/7dd2a3834/b7fae321e8274e2597fa9c2dd7c27503/FLAGb65204751 [2021-11-23 02:19:10,031 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423bc71e-3252-49ae-9542-424738d7b2a6/bin/utaipan-EQgc7hIp5V/data/7dd2a3834/b7fae321e8274e2597fa9c2dd7c27503 [2021-11-23 02:19:10,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:19:10,035 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:19:10,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:19:10,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:19:10,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:19:10,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:19:10" (1/1) ... [2021-11-23 02:19:10,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ad68065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:10, skipping insertion in model container [2021-11-23 02:19:10,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:19:10" (1/1) ... [2021-11-23 02:19:10,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:19:10,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:19:10,521 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_423bc71e-3252-49ae-9542-424738d7b2a6/sv-benchmarks/c/aws-c-common/aws_hash_string_harness.i[4489,4502] [2021-11-23 02:19:10,529 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_423bc71e-3252-49ae-9542-424738d7b2a6/sv-benchmarks/c/aws-c-common/aws_hash_string_harness.i[4549,4562] [2021-11-23 02:19:11,572 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:11,573 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:11,574 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:11,575 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:11,576 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:11,592 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:11,593 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:11,595 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:11,595 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:11,597 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:11,598 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:11,599 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:11,599 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,111 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 02:19:12,115 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 02:19:12,118 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 02:19:12,122 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 02:19:12,123 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 02:19:12,125 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 02:19:12,126 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 02:19:12,127 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 02:19:12,128 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 02:19:12,129 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 02:19:12,331 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 02:19:12,632 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,633 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,653 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,654 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,660 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,686 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,700 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,702 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,702 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,703 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,703 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,704 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,717 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:19:12,820 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:19:12,842 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_423bc71e-3252-49ae-9542-424738d7b2a6/sv-benchmarks/c/aws-c-common/aws_hash_string_harness.i[4489,4502] [2021-11-23 02:19:12,842 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_423bc71e-3252-49ae-9542-424738d7b2a6/sv-benchmarks/c/aws-c-common/aws_hash_string_harness.i[4549,4562] [2021-11-23 02:19:12,904 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,905 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,905 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,906 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,907 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,917 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,917 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,919 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,919 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,920 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,921 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,921 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,921 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:12,961 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 02:19:12,964 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 02:19:12,965 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 02:19:12,966 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 02:19:12,967 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 02:19:12,967 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 02:19:12,968 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 02:19:12,968 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 02:19:12,969 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 02:19:12,969 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 02:19:12,995 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 02:19:13,148 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:13,149 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:13,164 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:13,165 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:13,168 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:13,169 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:13,178 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:13,179 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:13,180 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:13,180 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:13,181 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:13,181 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:13,181 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:19:13,207 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:19:13,469 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:19:13,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:13 WrapperNode [2021-11-23 02:19:13,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:19:13,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:19:13,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:19:13,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:19:13,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:13" (1/1) ... [2021-11-23 02:19:13,593 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:13" (1/1) ... [2021-11-23 02:19:13,667 INFO L137 Inliner]: procedures = 774, calls = 2483, calls flagged for inlining = 67, calls inlined = 5, statements flattened = 527 [2021-11-23 02:19:13,668 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:19:13,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:19:13,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:19:13,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:19:13,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:13" (1/1) ... [2021-11-23 02:19:13,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:13" (1/1) ... [2021-11-23 02:19:13,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:13" (1/1) ... [2021-11-23 02:19:13,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:13" (1/1) ... [2021-11-23 02:19:13,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:13" (1/1) ... [2021-11-23 02:19:13,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:13" (1/1) ... [2021-11-23 02:19:13,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:13" (1/1) ... [2021-11-23 02:19:13,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:19:13,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:19:13,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:19:13,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:19:13,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:13" (1/1) ... [2021-11-23 02:19:13,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:19:13,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423bc71e-3252-49ae-9542-424738d7b2a6/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:19:13,831 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423bc71e-3252-49ae-9542-424738d7b2a6/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:19:13,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423bc71e-3252-49ae-9542-424738d7b2a6/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:19:13,891 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-11-23 02:19:13,891 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-11-23 02:19:13,891 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2021-11-23 02:19:13,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2021-11-23 02:19:13,891 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-23 02:19:13,892 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-23 02:19:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:19:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 02:19:13,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 02:19:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:19:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:19:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:19:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:19:13,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:19:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-23 02:19:13,894 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-23 02:19:13,894 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2021-11-23 02:19:13,895 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2021-11-23 02:19:13,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:19:13,895 INFO L130 BoogieDeclarations]: Found specification of procedure hashlittle2 [2021-11-23 02:19:13,896 INFO L138 BoogieDeclarations]: Found implementation of procedure hashlittle2 [2021-11-23 02:19:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-23 02:19:13,896 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-23 02:19:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:19:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:19:13,897 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:19:13,897 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:19:13,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:19:13,897 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-23 02:19:13,898 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-23 02:19:13,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:19:14,255 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:19:14,260 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:19:15,221 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2021-11-23 02:19:15,232 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:19:15,449 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:19:15,452 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-23 02:19:15,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:19:15 BoogieIcfgContainer [2021-11-23 02:19:15,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:19:15,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:19:15,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:19:15,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:19:15,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:19:10" (1/3) ... [2021-11-23 02:19:15,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4598598c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:19:15, skipping insertion in model container [2021-11-23 02:19:15,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:13" (2/3) ... [2021-11-23 02:19:15,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4598598c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:19:15, skipping insertion in model container [2021-11-23 02:19:15,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:19:15" (3/3) ... [2021-11-23 02:19:15,470 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_string_harness.i [2021-11-23 02:19:15,480 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:19:15,481 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:19:15,542 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:19:15,559 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 02:19:15,566 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:19:15,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 62 states have (on average 1.5) internal successors, (93), 62 states have internal predecessors, (93), 15 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 02:19:15,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 02:19:15,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:19:15,601 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:19:15,602 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:19:15,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:19:15,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1922620881, now seen corresponding path program 1 times [2021-11-23 02:19:15,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:19:15,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720946228] [2021-11-23 02:19:15,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:19:15,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:19:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:19:16,904 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:19:16,904 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:19:16,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720946228] [2021-11-23 02:19:16,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720946228] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:19:16,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914266584] [2021-11-23 02:19:16,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:19:16,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:19:16,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423bc71e-3252-49ae-9542-424738d7b2a6/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:19:16,917 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423bc71e-3252-49ae-9542-424738d7b2a6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:19:16,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423bc71e-3252-49ae-9542-424738d7b2a6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:19:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:19:17,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 2025 conjuncts, 119 conjunts are in the unsatisfiable core [2021-11-23 02:19:17,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:19:17,772 INFO L354 Elim1Store]: treesize reduction 27, result has 41.3 percent of original size [2021-11-23 02:19:17,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 38 [2021-11-23 02:19:17,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:19:17,911 INFO L354 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2021-11-23 02:19:17,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 32 [2021-11-23 02:19:24,039 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-11-23 02:19:24,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 75 [2021-11-23 02:19:35,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:19:35,311 INFO L354 Elim1Store]: treesize reduction 501, result has 11.3 percent of original size [2021-11-23 02:19:35,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 188 treesize of output 156 [2021-11-23 02:19:37,349 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 02:19:37,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:19:45,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914266584] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:19:45,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1307092035] [2021-11-23 02:19:45,617 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2021-11-23 02:19:45,617 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:19:45,622 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:19:45,628 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:19:45,628 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:19:49,552 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 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:19:49,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:19:49,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:19:49,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:19:49,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:19:49,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 17 [2021-11-23 02:19:49,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:19:49,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:19:49,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:19:49,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 17 [2021-11-23 02:19:49,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:19:49,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:19:49,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:19:49,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:19:49,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2021-11-23 02:19:49,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:19:49,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:19:49,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:19:49,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 17 [2021-11-23 02:19:51,481 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:19:54,501 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:19:55,990 INFO L197 IcfgInterpreter]: Interpreting procedure ensure_string_is_allocated_bounded_length with input of size 2428 for LOIs [2021-11-23 02:20:34,883 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 2413 for LOIs [2021-11-23 02:20:36,398 INFO L197 IcfgInterpreter]: Interpreting procedure bounded_malloc with input of size 2437 for LOIs [2021-11-23 02:20:53,771 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 2479 for LOIs [2021-11-23 02:21:05,582 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:21:37,457 WARN L227 SmtUtils]: Spent 30.17s on a formula simplification that was a NOOP. DAG size: 2413 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:22:09,425 WARN L227 SmtUtils]: Spent 30.19s on a formula simplification that was a NOOP. DAG size: 2428 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:22:41,684 WARN L227 SmtUtils]: Spent 30.41s on a formula simplification that was a NOOP. DAG size: 2430 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:24:40,211 WARN L227 SmtUtils]: Spent 1.53m on a formula simplification. DAG size of input: 2479 DAG size of output: 2435 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:26:35,723 WARN L227 SmtUtils]: Spent 1.53m on a formula simplification. DAG size of input: 2484 DAG size of output: 2439 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:27:41,012 WARN L227 SmtUtils]: Spent 1.05m on a formula simplification. DAG size of input: 2451 DAG size of output: 2445 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:28:48,993 WARN L227 SmtUtils]: Spent 1.09m on a formula simplification. DAG size of input: 2455 DAG size of output: 2449 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:30:00,659 WARN L227 SmtUtils]: Spent 1.15m on a formula simplification. DAG size of input: 2437 DAG size of output: 2432 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:14,441 WARN L227 SmtUtils]: Spent 1.19m on a formula simplification. DAG size of input: 2439 DAG size of output: 2434 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:14,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1307092035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:14,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:31:14,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10, 29] total 46 [2021-11-23 02:31:14,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936515752] [2021-11-23 02:31:14,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:14,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 02:31:14,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:31:14,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 02:31:14,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2490, Unknown=1, NotChecked=0, Total=2652 [2021-11-23 02:31:14,498 INFO L87 Difference]: Start difference. First operand has 88 states, 62 states have (on average 1.5) internal successors, (93), 62 states have internal predecessors, (93), 15 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 11 states, 8 states have (on average 3.625) internal successors, (29), 6 states have internal predecessors, (29), 5 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-23 02:31:16,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:16,966 INFO L93 Difference]: Finished difference Result 90 states and 124 transitions. [2021-11-23 02:31:16,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 02:31:16,971 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 3.625) internal successors, (29), 6 states have internal predecessors, (29), 5 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 5 states have call successors, (13) Word has length 61 [2021-11-23 02:31:16,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:16,976 INFO L225 Difference]: With dead ends: 90 [2021-11-23 02:31:16,977 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 02:31:16,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 85 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 625.9s TimeCoverageRelationStatistics Valid=161, Invalid=2490, Unknown=1, NotChecked=0, Total=2652 [2021-11-23 02:31:16,985 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:16,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 9 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 13 Unchecked, 2.4s Time] [2021-11-23 02:31:17,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 02:31:17,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 02:31:17,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-11-23 02:31:17,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 02:31:17,016 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-11-23 02:31:17,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:17,016 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 02:31:17,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 3.625) internal successors, (29), 6 states have internal predecessors, (29), 5 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-23 02:31:17,017 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 02:31:17,017 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 02:31:17,020 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:31:17,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423bc71e-3252-49ae-9542-424738d7b2a6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:31:17,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_423bc71e-3252-49ae-9542-424738d7b2a6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-23 02:31:17,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.