./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e27b61-beb3-477e-8080-e3195bc01115/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e27b61-beb3-477e-8080-e3195bc01115/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e27b61-beb3-477e-8080-e3195bc01115/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e27b61-beb3-477e-8080-e3195bc01115/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e27b61-beb3-477e-8080-e3195bc01115/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e27b61-beb3-477e-8080-e3195bc01115/bin/utaipan-TEXQjIfE4P --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 ab48078691743837960e369bd318845908490844fac300de97818a03fa84d8a1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:51:01,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:51:01,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:51:01,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:51:01,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:51:01,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:51:01,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:51:01,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:51:01,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:51:01,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:51:01,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:51:01,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:51:01,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:51:01,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:51:01,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:51:01,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:51:01,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:51:01,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:51:01,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:51:01,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:51:01,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:51:01,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:51:01,229 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:51:01,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:51:01,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:51:01,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:51:01,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:51:01,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:51:01,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:51:01,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:51:01,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:51:01,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:51:01,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:51:01,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:51:01,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:51:01,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:51:01,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:51:01,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:51:01,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:51:01,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:51:01,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:51:01,253 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e27b61-beb3-477e-8080-e3195bc01115/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:51:01,306 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:51:01,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:51:01,307 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:51:01,307 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:51:01,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:51:01,315 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:51:01,315 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:51:01,315 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:51:01,315 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:51:01,316 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:51:01,317 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:51:01,317 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:51:01,317 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:51:01,318 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:51:01,318 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:51:01,318 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:51:01,318 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:51:01,319 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:51:01,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:51:01,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:51:01,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:51:01,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:51:01,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:51:01,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:51:01,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:51:01,321 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:51:01,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:51:01,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:51:01,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:51:01,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:51:01,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:51:01,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:51:01,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:51:01,325 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:51:01,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:51:01,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:51:01,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:51:01,326 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:51:01,326 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_53e27b61-beb3-477e-8080-e3195bc01115/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e27b61-beb3-477e-8080-e3195bc01115/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab48078691743837960e369bd318845908490844fac300de97818a03fa84d8a1 [2021-11-21 01:51:01,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:51:01,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:51:01,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:51:01,591 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:51:01,592 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:51:01,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e27b61-beb3-477e-8080-e3195bc01115/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i [2021-11-21 01:51:01,685 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e27b61-beb3-477e-8080-e3195bc01115/bin/utaipan-TEXQjIfE4P/data/062aca33e/2058041d447c48609a638ebc07e1e41e/FLAGd2b93c694 [2021-11-21 01:51:02,611 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:51:02,611 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e27b61-beb3-477e-8080-e3195bc01115/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i [2021-11-21 01:51:02,657 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e27b61-beb3-477e-8080-e3195bc01115/bin/utaipan-TEXQjIfE4P/data/062aca33e/2058041d447c48609a638ebc07e1e41e/FLAGd2b93c694 [2021-11-21 01:51:03,036 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e27b61-beb3-477e-8080-e3195bc01115/bin/utaipan-TEXQjIfE4P/data/062aca33e/2058041d447c48609a638ebc07e1e41e [2021-11-21 01:51:03,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:51:03,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:51:03,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:51:03,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:51:03,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:51:03,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:51:03" (1/1) ... [2021-11-21 01:51:03,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f19f6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:03, skipping insertion in model container [2021-11-21 01:51:03,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:51:03" (1/1) ... [2021-11-21 01:51:03,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:51:03,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:51:03,613 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_53e27b61-beb3-477e-8080-e3195bc01115/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4498,4511] [2021-11-21 01:51:03,623 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_53e27b61-beb3-477e-8080-e3195bc01115/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4558,4571] [2021-11-21 01:51:04,999 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:05,000 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:05,001 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:05,002 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:05,003 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:05,017 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:05,018 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:05,020 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:05,020 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:05,648 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 01:51:05,650 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 01:51:05,651 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 01:51:05,652 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 01:51:05,653 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 01:51:05,654 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 01:51:05,655 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 01:51:05,656 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 01:51:05,656 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 01:51:05,657 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 01:51:05,930 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 01:51:06,054 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,055 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,447 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,448 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,471 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,472 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,478 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,478 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,493 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,494 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,494 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,495 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,495 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,496 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,496 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,529 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:51:06,572 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:51:06,586 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_53e27b61-beb3-477e-8080-e3195bc01115/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4498,4511] [2021-11-21 01:51:06,587 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_53e27b61-beb3-477e-8080-e3195bc01115/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4558,4571] [2021-11-21 01:51:06,617 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,617 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,618 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,618 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,619 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,623 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,624 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,625 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,625 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,653 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 01:51:06,653 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 01:51:06,654 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 01:51:06,654 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 01:51:06,655 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 01:51:06,703 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 01:51:06,703 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 01:51:06,703 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 01:51:06,704 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 01:51:06,704 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 01:51:06,721 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 01:51:06,771 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,771 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,867 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,867 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,875 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,876 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,880 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,880 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,890 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,891 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,892 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,892 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,892 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,893 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,893 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:51:06,957 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:51:07,320 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:51:07,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:07 WrapperNode [2021-11-21 01:51:07,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:51:07,322 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:51:07,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:51:07,323 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:51:07,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:07" (1/1) ... [2021-11-21 01:51:07,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:07" (1/1) ... [2021-11-21 01:51:07,578 INFO L137 Inliner]: procedures = 776, calls = 3576, calls flagged for inlining = 77, calls inlined = 6, statements flattened = 787 [2021-11-21 01:51:07,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:51:07,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:51:07,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:51:07,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:51:07,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:07" (1/1) ... [2021-11-21 01:51:07,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:07" (1/1) ... [2021-11-21 01:51:07,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:07" (1/1) ... [2021-11-21 01:51:07,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:07" (1/1) ... [2021-11-21 01:51:07,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:07" (1/1) ... [2021-11-21 01:51:07,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:07" (1/1) ... [2021-11-21 01:51:07,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:07" (1/1) ... [2021-11-21 01:51:07,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:51:07,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:51:07,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:51:07,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:51:07,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:07" (1/1) ... [2021-11-21 01:51:07,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:51:07,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e27b61-beb3-477e-8080-e3195bc01115/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:51:07,759 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e27b61-beb3-477e-8080-e3195bc01115/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:51:07,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e27b61-beb3-477e-8080-e3195bc01115/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:51:07,810 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-21 01:51:07,810 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-21 01:51:07,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:51:07,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:51:07,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:51:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:51:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:51:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:51:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:51:07,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:51:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-21 01:51:07,813 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-21 01:51:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:51:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:51:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure hashlittle2 [2021-11-21 01:51:07,813 INFO L138 BoogieDeclarations]: Found implementation of procedure hashlittle2 [2021-11-21 01:51:07,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:51:07,814 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-21 01:51:07,814 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-21 01:51:07,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:51:07,814 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 01:51:07,815 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 01:51:07,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:51:07,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:51:08,194 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:51:08,196 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:51:09,613 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !true; [2021-11-21 01:51:09,621 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:51:09,884 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:51:09,885 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-21 01:51:09,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:51:09 BoogieIcfgContainer [2021-11-21 01:51:09,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:51:09,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:51:09,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:51:09,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:51:09,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:51:03" (1/3) ... [2021-11-21 01:51:09,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4283aabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:51:09, skipping insertion in model container [2021-11-21 01:51:09,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:07" (2/3) ... [2021-11-21 01:51:09,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4283aabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:51:09, skipping insertion in model container [2021-11-21 01:51:09,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:51:09" (3/3) ... [2021-11-21 01:51:09,907 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_byte_cursor_ptr_harness.i [2021-11-21 01:51:09,914 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:51:09,914 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:51:10,015 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:51:10,023 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 [2021-11-21 01:51:10,023 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:51:10,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 55 states have (on average 1.5636363636363637) internal successors, (86), 55 states have internal predecessors, (86), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-21 01:51:10,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-21 01:51:10,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:51:10,059 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-21 01:51:10,059 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:51:10,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:51:10,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1999499499, now seen corresponding path program 1 times [2021-11-21 01:51:10,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:51:10,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129177137] [2021-11-21 01:51:10,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:10,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:51:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:11,988 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-21 01:51:11,988 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:51:11,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129177137] [2021-11-21 01:51:11,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129177137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:51:11,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:51:11,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-21 01:51:11,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651335383] [2021-11-21 01:51:11,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:51:11,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-21 01:51:11,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:51:12,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-21 01:51:12,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:51:12,036 INFO L87 Difference]: Start difference. First operand has 75 states, 55 states have (on average 1.5636363636363637) internal successors, (86), 55 states have internal predecessors, (86), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-21 01:51:15,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:51:15,214 INFO L93 Difference]: Finished difference Result 144 states and 221 transitions. [2021-11-21 01:51:15,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-21 01:51:15,218 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 41 [2021-11-21 01:51:15,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:51:15,232 INFO L225 Difference]: With dead ends: 144 [2021-11-21 01:51:15,232 INFO L226 Difference]: Without dead ends: 126 [2021-11-21 01:51:15,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:51:15,239 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 78 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:51:15,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 325 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-21 01:51:15,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-21 01:51:15,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 93. [2021-11-21 01:51:15,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 64 states have (on average 1.515625) internal successors, (97), 67 states have internal predecessors, (97), 20 states have call successors, (20), 7 states have call predecessors, (20), 8 states have return successors, (21), 18 states have call predecessors, (21), 19 states have call successors, (21) [2021-11-21 01:51:15,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 138 transitions. [2021-11-21 01:51:15,293 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 138 transitions. Word has length 41 [2021-11-21 01:51:15,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:51:15,294 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 138 transitions. [2021-11-21 01:51:15,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-21 01:51:15,294 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 138 transitions. [2021-11-21 01:51:15,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-21 01:51:15,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:51:15,303 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-21 01:51:15,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:51:15,304 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:51:15,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:51:15,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1090056852, now seen corresponding path program 1 times [2021-11-21 01:51:15,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:51:15,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926958147] [2021-11-21 01:51:15,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:15,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:51:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:16,285 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-21 01:51:16,285 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:51:16,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926958147] [2021-11-21 01:51:16,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926958147] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:51:16,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513842066] [2021-11-21 01:51:16,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:16,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:51:16,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e27b61-beb3-477e-8080-e3195bc01115/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:51:16,288 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e27b61-beb3-477e-8080-e3195bc01115/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:51:16,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e27b61-beb3-477e-8080-e3195bc01115/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:51:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:16,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 2474 conjuncts, 116 conjunts are in the unsatisfiable core [2021-11-21 01:51:16,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:51:16,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:51:17,527 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 [2021-11-21 01:51:17,536 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 [2021-11-21 01:51:21,123 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-21 01:51:21,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2021-11-21 01:51:24,754 INFO L354 Elim1Store]: treesize reduction 169, result has 11.5 percent of original size [2021-11-21 01:51:24,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 241 treesize of output 206 [2021-11-21 01:51:24,866 INFO L354 Elim1Store]: treesize reduction 181, result has 10.8 percent of original size [2021-11-21 01:51:24,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 182 treesize of output 136 [2021-11-21 01:51:24,934 INFO L354 Elim1Store]: treesize reduction 181, result has 10.8 percent of original size [2021-11-21 01:51:24,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 119 treesize of output 73 [2021-11-21 01:51:24,966 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-21 01:51:24,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 60 [2021-11-21 01:51:26,838 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:51:26,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:51:27,914 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 13430 disjunctions. This might take some time... [2021-11-21 01:51:48,746 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.