./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 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522a5bb4-59ff-4b08-89b2-6e90659e946d/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522a5bb4-59ff-4b08-89b2-6e90659e946d/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522a5bb4-59ff-4b08-89b2-6e90659e946d/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522a5bb4-59ff-4b08-89b2-6e90659e946d/bin/utaipan-7li7fVZpFI/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_522a5bb4-59ff-4b08-89b2-6e90659e946d/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522a5bb4-59ff-4b08-89b2-6e90659e946d/bin/utaipan-7li7fVZpFI --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:48:32,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:48:32,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:48:32,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:48:32,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:48:32,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:48:32,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:48:32,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:48:32,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:48:32,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:48:32,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:48:32,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:48:32,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:48:32,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:48:32,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:48:32,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:48:32,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:48:32,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:48:32,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:48:32,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:48:32,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:48:32,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:48:32,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:48:32,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:48:32,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:48:32,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:48:32,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:48:32,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:48:32,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:48:32,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:48:32,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:48:32,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:48:32,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:48:32,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:48:32,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:48:32,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:48:32,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:48:32,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:48:32,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:48:32,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:48:32,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:48:32,828 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522a5bb4-59ff-4b08-89b2-6e90659e946d/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:48:32,868 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:48:32,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:48:32,869 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:48:32,869 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:48:32,870 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:48:32,870 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:48:32,871 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:48:32,871 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:48:32,871 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:48:32,871 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:48:32,872 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:48:32,872 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:48:32,873 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:48:32,873 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:48:32,873 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:48:32,873 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:48:32,874 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:48:32,874 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:48:32,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:48:32,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:48:32,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:48:32,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:48:32,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:48:32,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:48:32,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:48:32,876 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:48:32,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:48:32,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:48:32,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:48:32,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:48:32,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:48:32,878 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:48:32,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:48:32,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:48:32,879 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:48:32,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:48:32,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:48:32,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:48:32,880 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_522a5bb4-59ff-4b08-89b2-6e90659e946d/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522a5bb4-59ff-4b08-89b2-6e90659e946d/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab48078691743837960e369bd318845908490844fac300de97818a03fa84d8a1 [2022-11-03 01:48:33,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:48:33,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:48:33,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:48:33,187 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:48:33,191 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:48:33,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522a5bb4-59ff-4b08-89b2-6e90659e946d/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i [2022-11-03 01:48:33,279 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522a5bb4-59ff-4b08-89b2-6e90659e946d/bin/utaipan-7li7fVZpFI/data/73e12d69d/1350b39305584a4d9743f3ed271abed1/FLAG4c692b23e [2022-11-03 01:48:34,168 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:48:34,169 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522a5bb4-59ff-4b08-89b2-6e90659e946d/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i [2022-11-03 01:48:34,227 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522a5bb4-59ff-4b08-89b2-6e90659e946d/bin/utaipan-7li7fVZpFI/data/73e12d69d/1350b39305584a4d9743f3ed271abed1/FLAG4c692b23e [2022-11-03 01:48:34,591 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522a5bb4-59ff-4b08-89b2-6e90659e946d/bin/utaipan-7li7fVZpFI/data/73e12d69d/1350b39305584a4d9743f3ed271abed1 [2022-11-03 01:48:34,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:48:34,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:48:34,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:48:34,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:48:34,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:48:34,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:48:34" (1/1) ... [2022-11-03 01:48:34,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c5c2d25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:34, skipping insertion in model container [2022-11-03 01:48:34,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:48:34" (1/1) ... [2022-11-03 01:48:34,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:48:34,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:48:35,104 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_522a5bb4-59ff-4b08-89b2-6e90659e946d/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4498,4511] [2022-11-03 01:48:35,111 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_522a5bb4-59ff-4b08-89b2-6e90659e946d/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4558,4571] [2022-11-03 01:48:36,106 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:36,107 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:36,107 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:36,108 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:36,109 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:36,123 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:36,124 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:36,126 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:36,127 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:36,663 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 01:48:36,664 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 01:48:36,665 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 01:48:36,666 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 01:48:36,668 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 01:48:36,669 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 01:48:36,669 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 01:48:36,670 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 01:48:36,671 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 01:48:36,671 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 01:48:36,964 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 01:48:37,052 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,052 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,388 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,389 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,409 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,410 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,416 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,416 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,475 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,476 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,477 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,477 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,478 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,478 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,479 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:48:37,585 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:48:37,600 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_522a5bb4-59ff-4b08-89b2-6e90659e946d/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4498,4511] [2022-11-03 01:48:37,600 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_522a5bb4-59ff-4b08-89b2-6e90659e946d/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4558,4571] [2022-11-03 01:48:37,656 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,656 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,657 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,657 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,658 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,666 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,667 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,668 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,669 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,722 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 01:48:37,723 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 01:48:37,724 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 01:48:37,725 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 01:48:37,726 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 01:48:37,726 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 01:48:37,727 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 01:48:37,727 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 01:48:37,728 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 01:48:37,728 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 01:48:37,765 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 01:48:37,840 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,841 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,964 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,965 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,972 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,972 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,977 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:37,977 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:38,027 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:38,028 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:38,028 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:38,028 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:38,029 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:38,030 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:38,031 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:38,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:48:38,337 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:48:38,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38 WrapperNode [2022-11-03 01:48:38,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:48:38,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:48:38,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:48:38,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:48:38,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,595 INFO L138 Inliner]: procedures = 776, calls = 3576, calls flagged for inlining = 77, calls inlined = 6, statements flattened = 787 [2022-11-03 01:48:38,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:48:38,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:48:38,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:48:38,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:48:38,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,722 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:48:38,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:48:38,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:48:38,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:48:38,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:48:38,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522a5bb4-59ff-4b08-89b2-6e90659e946d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:48:38,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522a5bb4-59ff-4b08-89b2-6e90659e946d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:48:38,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522a5bb4-59ff-4b08-89b2-6e90659e946d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:48:38,849 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-03 01:48:38,849 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-03 01:48:38,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:48:38,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 01:48:38,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 01:48:38,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:48:38,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:48:38,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:48:38,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:48:38,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:48:38,852 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-03 01:48:38,853 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-03 01:48:38,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:48:38,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:48:38,853 INFO L130 BoogieDeclarations]: Found specification of procedure hashlittle2 [2022-11-03 01:48:38,853 INFO L138 BoogieDeclarations]: Found implementation of procedure hashlittle2 [2022-11-03 01:48:38,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:48:38,854 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-03 01:48:38,854 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-03 01:48:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:48:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:48:38,856 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:48:38,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:48:38,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:48:39,224 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:48:39,227 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:48:42,594 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !true; [2022-11-03 01:48:42,604 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:48:42,932 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:48:42,932 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-03 01:48:42,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:48:42 BoogieIcfgContainer [2022-11-03 01:48:42,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:48:42,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:48:42,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:48:42,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:48:42,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:48:34" (1/3) ... [2022-11-03 01:48:42,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15999ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:48:42, skipping insertion in model container [2022-11-03 01:48:42,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38" (2/3) ... [2022-11-03 01:48:42,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15999ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:48:42, skipping insertion in model container [2022-11-03 01:48:42,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:48:42" (3/3) ... [2022-11-03 01:48:42,953 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_byte_cursor_ptr_harness.i [2022-11-03 01:48:42,975 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:48:42,975 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:48:43,044 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:48:43,055 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@571bae7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:48:43,056 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:48:43,060 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) [2022-11-03 01:48:43,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-03 01:48:43,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:43,076 INFO L195 NwaCegarLoop]: 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] [2022-11-03 01:48:43,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:48:43,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:43,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1999499499, now seen corresponding path program 1 times [2022-11-03 01:48:43,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:43,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728631875] [2022-11-03 01:48:43,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:43,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 01:48:51,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:51,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728631875] [2022-11-03 01:48:51,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728631875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:51,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:51,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-03 01:48:51,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326605025] [2022-11-03 01:48:51,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:51,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 01:48:51,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:51,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 01:48:51,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-11-03 01:48:51,440 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) [2022-11-03 01:48:55,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:55,113 INFO L93 Difference]: Finished difference Result 144 states and 221 transitions. [2022-11-03 01:48:55,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 01:48:55,116 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 [2022-11-03 01:48:55,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:55,139 INFO L225 Difference]: With dead ends: 144 [2022-11-03 01:48:55,139 INFO L226 Difference]: Without dead ends: 126 [2022-11-03 01:48:55,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2022-11-03 01:48:55,146 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 77 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:55,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 242 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-03 01:48:55,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-03 01:48:55,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 93. [2022-11-03 01:48:55,220 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) [2022-11-03 01:48:55,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 138 transitions. [2022-11-03 01:48:55,230 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 138 transitions. Word has length 41 [2022-11-03 01:48:55,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:55,232 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 138 transitions. [2022-11-03 01:48:55,232 INFO L496 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) [2022-11-03 01:48:55,232 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 138 transitions. [2022-11-03 01:48:55,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-03 01:48:55,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:55,238 INFO L195 NwaCegarLoop]: 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] [2022-11-03 01:48:55,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:48:55,239 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:48:55,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:55,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1090056852, now seen corresponding path program 1 times [2022-11-03 01:48:55,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:55,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196169846] [2022-11-03 01:48:55,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:55,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:02,903 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 01:49:02,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:49:02,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196169846] [2022-11-03 01:49:02,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196169846] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:49:02,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919971367] [2022-11-03 01:49:02,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:02,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:49:02,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522a5bb4-59ff-4b08-89b2-6e90659e946d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:49:02,911 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522a5bb4-59ff-4b08-89b2-6e90659e946d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:49:02,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522a5bb4-59ff-4b08-89b2-6e90659e946d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:49:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:03,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 2551 conjuncts, 117 conjunts are in the unsatisfiable core [2022-11-03 01:49:03,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:49:03,686 INFO L390 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 [2022-11-03 01:49:04,181 INFO L390 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 [2022-11-03 01:49:04,191 INFO L390 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 [2022-11-03 01:49:06,606 INFO L356 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2022-11-03 01:49:06,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 34 [2022-11-03 01:49:07,487 INFO L356 Elim1Store]: treesize reduction 97, result has 1.0 percent of original size [2022-11-03 01:49:07,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 23 [2022-11-03 01:49:07,557 INFO L356 Elim1Store]: treesize reduction 59, result has 34.4 percent of original size [2022-11-03 01:49:07,558 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 41 [2022-11-03 01:49:07,615 INFO L356 Elim1Store]: treesize reduction 59, result has 34.4 percent of original size [2022-11-03 01:49:07,616 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 41 [2022-11-03 01:49:07,633 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:49:07,633 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2022-11-03 01:49:07,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:49:07,673 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:49:07,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:49:08,915 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 14202 disjunctions. This might take some time... [2022-11-03 01:49:24,848 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.