./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33291836-85c5-424d-b438-f54e91c20d56/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33291836-85c5-424d-b438-f54e91c20d56/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_33291836-85c5-424d-b438-f54e91c20d56/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33291836-85c5-424d-b438-f54e91c20d56/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33291836-85c5-424d-b438-f54e91c20d56/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_33291836-85c5-424d-b438-f54e91c20d56/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 2fd96106837ff3ee9325c248fea6969b94a5a1f2cee078fd159398f70369aafc --- 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 02:23:29,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:23:29,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:23:30,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:23:30,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:23:30,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:23:30,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:23:30,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:23:30,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:23:30,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:23:30,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:23:30,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:23:30,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:23:30,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:23:30,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:23:30,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:23:30,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:23:30,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:23:30,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:23:30,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:23:30,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:23:30,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:23:30,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:23:30,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:23:30,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:23:30,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:23:30,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:23:30,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:23:30,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:23:30,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:23:30,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:23:30,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:23:30,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:23:30,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:23:30,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:23:30,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:23:30,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:23:30,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:23:30,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:23:30,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:23:30,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:23:30,079 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33291836-85c5-424d-b438-f54e91c20d56/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:23:30,112 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:23:30,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:23:30,113 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:23:30,114 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:23:30,115 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:23:30,115 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:23:30,115 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:23:30,115 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:23:30,116 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:23:30,116 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:23:30,117 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:23:30,117 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:23:30,118 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:23:30,118 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:23:30,118 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:23:30,118 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:23:30,119 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:23:30,119 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:23:30,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:23:30,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:23:30,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:23:30,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:23:30,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:23:30,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:23:30,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:23:30,121 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:23:30,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:23:30,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:23:30,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:23:30,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:23:30,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:23:30,125 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:23:30,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:23:30,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:23:30,125 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:23:30,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:23:30,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:23:30,126 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:23:30,126 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_33291836-85c5-424d-b438-f54e91c20d56/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33291836-85c5-424d-b438-f54e91c20d56/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fd96106837ff3ee9325c248fea6969b94a5a1f2cee078fd159398f70369aafc [2022-11-03 02:23:30,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:23:30,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:23:30,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:23:30,487 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:23:30,488 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:23:30,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33291836-85c5-424d-b438-f54e91c20d56/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i [2022-11-03 02:23:30,562 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33291836-85c5-424d-b438-f54e91c20d56/bin/utaipan-7li7fVZpFI/data/4b11b1bc9/eee77e1d330f4736af84adc57b69750f/FLAG6974b8ba5 [2022-11-03 02:23:31,465 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:23:31,467 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33291836-85c5-424d-b438-f54e91c20d56/sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i [2022-11-03 02:23:31,508 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33291836-85c5-424d-b438-f54e91c20d56/bin/utaipan-7li7fVZpFI/data/4b11b1bc9/eee77e1d330f4736af84adc57b69750f/FLAG6974b8ba5 [2022-11-03 02:23:31,940 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33291836-85c5-424d-b438-f54e91c20d56/bin/utaipan-7li7fVZpFI/data/4b11b1bc9/eee77e1d330f4736af84adc57b69750f [2022-11-03 02:23:31,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:23:31,943 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:23:31,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:23:31,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:23:31,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:23:31,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:23:31" (1/1) ... [2022-11-03 02:23:31,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3037d328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:31, skipping insertion in model container [2022-11-03 02:23:31,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:23:31" (1/1) ... [2022-11-03 02:23:31,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:23:32,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:23:32,360 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_33291836-85c5-424d-b438-f54e91c20d56/sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i[4499,4512] [2022-11-03 02:23:32,369 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_33291836-85c5-424d-b438-f54e91c20d56/sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i[4559,4572] [2022-11-03 02:23:33,673 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:23:33,674 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:23:33,674 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:23:33,675 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:23:33,677 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:23:33,691 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:23:33,692 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:23:33,695 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:23:33,696 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:23:34,163 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 02:23:34,165 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 02:23:34,166 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 02:23:34,168 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 02:23:34,169 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 02:23:34,170 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 02:23:34,171 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 02:23:34,172 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 02:23:34,173 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 02:23:34,173 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 02:23:34,358 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 02:23:34,511 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:23:34,511 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:23:34,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:23:34,696 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:23:34,724 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_33291836-85c5-424d-b438-f54e91c20d56/sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i[4499,4512] [2022-11-03 02:23:34,724 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_33291836-85c5-424d-b438-f54e91c20d56/sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i[4559,4572] [2022-11-03 02:23:34,773 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:23:34,773 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:23:34,773 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:23:34,774 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:23:34,782 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:23:34,794 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:23:34,794 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:23:34,802 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:23:34,802 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:23:34,866 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 02:23:34,866 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 02:23:34,867 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 02:23:34,868 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 02:23:34,869 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 02:23:34,869 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 02:23:34,869 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 02:23:34,870 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 02:23:34,870 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 02:23:34,873 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 02:23:34,902 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 02:23:35,009 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:23:35,009 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:23:35,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:23:35,222 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:23:35,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:35 WrapperNode [2022-11-03 02:23:35,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:23:35,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:23:35,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:23:35,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:23:35,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:35" (1/1) ... [2022-11-03 02:23:35,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:35" (1/1) ... [2022-11-03 02:23:35,473 INFO L138 Inliner]: procedures = 690, calls = 2620, calls flagged for inlining = 62, calls inlined = 10, statements flattened = 894 [2022-11-03 02:23:35,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:23:35,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:23:35,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:23:35,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:23:35,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:35" (1/1) ... [2022-11-03 02:23:35,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:35" (1/1) ... [2022-11-03 02:23:35,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:35" (1/1) ... [2022-11-03 02:23:35,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:35" (1/1) ... [2022-11-03 02:23:35,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:35" (1/1) ... [2022-11-03 02:23:35,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:35" (1/1) ... [2022-11-03 02:23:35,580 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:35" (1/1) ... [2022-11-03 02:23:35,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:35" (1/1) ... [2022-11-03 02:23:35,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:23:35,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:23:35,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:23:35,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:23:35,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:35" (1/1) ... [2022-11-03 02:23:35,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:23:35,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33291836-85c5-424d-b438-f54e91c20d56/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:23:35,639 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33291836-85c5-424d-b438-f54e91c20d56/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:23:35,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33291836-85c5-424d-b438-f54e91c20d56/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:23:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-03 02:23:35,685 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-03 02:23:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:23:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-03 02:23:35,686 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-03 02:23:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:23:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 02:23:35,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 02:23:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_left_trim_pred [2022-11-03 02:23:35,687 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_left_trim_pred [2022-11-03 02:23:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:23:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:23:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:23:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:23:35,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:23:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-03 02:23:35,688 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-03 02:23:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-03 02:23:35,689 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-03 02:23:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:23:35,689 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:23:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:23:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:23:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:23:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~uint8_t~0~TO~int [2022-11-03 02:23:35,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~uint8_t~0~TO~int [2022-11-03 02:23:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:23:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:23:36,050 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:23:36,052 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:23:37,457 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:23:37,698 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:23:37,698 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 02:23:37,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:23:37 BoogieIcfgContainer [2022-11-03 02:23:37,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:23:37,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:23:37,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:23:37,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:23:37,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:23:31" (1/3) ... [2022-11-03 02:23:37,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202f2ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:23:37, skipping insertion in model container [2022-11-03 02:23:37,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:35" (2/3) ... [2022-11-03 02:23:37,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202f2ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:23:37, skipping insertion in model container [2022-11-03 02:23:37,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:23:37" (3/3) ... [2022-11-03 02:23:37,718 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_trim_pred_harness.i [2022-11-03 02:23:37,741 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:23:37,742 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:23:37,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:23:37,835 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;@290763d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:23:37,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:23:37,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 50 states have (on average 1.24) internal successors, (62), 51 states have internal predecessors, (62), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-11-03 02:23:37,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 02:23:37,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:37,852 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:23:37,852 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:37,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:37,860 INFO L85 PathProgramCache]: Analyzing trace with hash 728730477, now seen corresponding path program 1 times [2022-11-03 02:23:37,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:37,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778074792] [2022-11-03 02:23:37,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:37,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:38,609 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 02:23:38,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:38,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778074792] [2022-11-03 02:23:38,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778074792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:38,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:38,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:23:38,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747499358] [2022-11-03 02:23:38,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:38,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:23:38,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:38,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:23:38,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:23:38,673 INFO L87 Difference]: Start difference. First operand has 97 states, 50 states have (on average 1.24) internal successors, (62), 51 states have internal predecessors, (62), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 02:23:38,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:38,928 INFO L93 Difference]: Finished difference Result 156 states and 227 transitions. [2022-11-03 02:23:38,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:23:38,932 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 51 [2022-11-03 02:23:38,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:38,948 INFO L225 Difference]: With dead ends: 156 [2022-11-03 02:23:38,949 INFO L226 Difference]: Without dead ends: 91 [2022-11-03 02:23:38,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:23:38,965 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:38,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:23:38,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-03 02:23:39,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-11-03 02:23:39,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 47 states have internal predecessors, (53), 37 states have call successors, (37), 8 states have call predecessors, (37), 7 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-11-03 02:23:39,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 125 transitions. [2022-11-03 02:23:39,027 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 125 transitions. Word has length 51 [2022-11-03 02:23:39,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:39,029 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 125 transitions. [2022-11-03 02:23:39,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 02:23:39,029 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 125 transitions. [2022-11-03 02:23:39,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 02:23:39,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:39,033 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:23:39,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:23:39,034 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:39,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:39,035 INFO L85 PathProgramCache]: Analyzing trace with hash -674183560, now seen corresponding path program 1 times [2022-11-03 02:23:39,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:39,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247379072] [2022-11-03 02:23:39,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:39,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:45,277 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-03 02:23:45,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:45,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247379072] [2022-11-03 02:23:45,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247379072] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:23:45,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993006615] [2022-11-03 02:23:45,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:45,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:23:45,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33291836-85c5-424d-b438-f54e91c20d56/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:23:45,282 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33291836-85c5-424d-b438-f54e91c20d56/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:23:45,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33291836-85c5-424d-b438-f54e91c20d56/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:23:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:45,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 2540 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-03 02:23:45,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:23:46,161 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 02:23:48,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2022-11-03 02:23:48,312 INFO L356 Elim1Store]: treesize reduction 24, result has 65.2 percent of original size [2022-11-03 02:23:48,312 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 106 [2022-11-03 02:23:48,335 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2022-11-03 02:23:48,424 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 02:23:48,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:23:49,661 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 13430 disjunctions. This might take some time... [2022-11-03 02:24:01,727 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.