./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4797ccf-18fe-4eda-abfd-12bea975c224/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4797ccf-18fe-4eda-abfd-12bea975c224/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4797ccf-18fe-4eda-abfd-12bea975c224/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4797ccf-18fe-4eda-abfd-12bea975c224/bin/utaipan-eEHZpOm5b7/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_d4797ccf-18fe-4eda-abfd-12bea975c224/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4797ccf-18fe-4eda-abfd-12bea975c224/bin/utaipan-eEHZpOm5b7 --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 --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:49:07,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:49:07,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:49:08,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:49:08,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:49:08,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:49:08,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:49:08,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:49:08,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:49:08,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:49:08,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:49:08,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:49:08,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:49:08,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:49:08,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:49:08,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:49:08,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:49:08,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:49:08,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:49:08,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:49:08,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:49:08,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:49:08,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:49:08,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:49:08,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:49:08,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:49:08,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:49:08,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:49:08,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:49:08,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:49:08,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:49:08,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:49:08,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:49:08,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:49:08,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:49:08,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:49:08,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:49:08,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:49:08,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:49:08,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:49:08,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:49:08,101 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4797ccf-18fe-4eda-abfd-12bea975c224/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:49:08,143 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:49:08,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:49:08,144 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:49:08,144 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:49:08,151 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:49:08,151 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:49:08,151 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:49:08,151 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:49:08,151 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:49:08,152 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:49:08,152 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:49:08,153 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:49:08,153 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:49:08,153 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:49:08,153 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:49:08,153 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:49:08,154 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:49:08,154 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:49:08,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:49:08,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:49:08,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:49:08,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:49:08,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:49:08,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:49:08,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:49:08,156 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:49:08,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:49:08,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:49:08,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:49:08,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:49:08,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:49:08,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:49:08,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:49:08,159 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:49:08,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:49:08,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:49:08,159 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:49:08,160 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:49:08,160 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4797ccf-18fe-4eda-abfd-12bea975c224/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4797ccf-18fe-4eda-abfd-12bea975c224/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fd96106837ff3ee9325c248fea6969b94a5a1f2cee078fd159398f70369aafc [2021-11-25 18:49:08,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:49:08,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:49:08,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:49:08,478 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:49:08,479 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:49:08,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4797ccf-18fe-4eda-abfd-12bea975c224/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i [2021-11-25 18:49:08,554 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4797ccf-18fe-4eda-abfd-12bea975c224/bin/utaipan-eEHZpOm5b7/data/282ac7ff6/8ceb336089354fec9cd7a0a015a7a370/FLAG4e2d52ea9 [2021-11-25 18:49:09,310 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:49:09,311 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4797ccf-18fe-4eda-abfd-12bea975c224/sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i [2021-11-25 18:49:09,353 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4797ccf-18fe-4eda-abfd-12bea975c224/bin/utaipan-eEHZpOm5b7/data/282ac7ff6/8ceb336089354fec9cd7a0a015a7a370/FLAG4e2d52ea9 [2021-11-25 18:49:09,378 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4797ccf-18fe-4eda-abfd-12bea975c224/bin/utaipan-eEHZpOm5b7/data/282ac7ff6/8ceb336089354fec9cd7a0a015a7a370 [2021-11-25 18:49:09,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:49:09,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:49:09,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:49:09,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:49:09,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:49:09,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:49:09" (1/1) ... [2021-11-25 18:49:09,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65872b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:49:09, skipping insertion in model container [2021-11-25 18:49:09,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:49:09" (1/1) ... [2021-11-25 18:49:09,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:49:09,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:49:09,810 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_d4797ccf-18fe-4eda-abfd-12bea975c224/sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i[4499,4512] [2021-11-25 18:49:09,822 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_d4797ccf-18fe-4eda-abfd-12bea975c224/sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i[4559,4572] [2021-11-25 18:49:10,770 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:49:10,771 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:49:10,772 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:49:10,773 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:49:10,774 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:49:10,790 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:49:10,791 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:49:10,793 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:49:10,794 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:49:11,265 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 18:49:11,266 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 18:49:11,267 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 18:49:11,269 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 18:49:11,271 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 18:49:11,271 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 18:49:11,272 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 18:49:11,273 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 18:49:11,274 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 18:49:11,274 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 18:49:11,510 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 18:49:11,647 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:49:11,655 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:49:11,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:49:11,787 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:49:11,802 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_d4797ccf-18fe-4eda-abfd-12bea975c224/sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i[4499,4512] [2021-11-25 18:49:11,803 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_d4797ccf-18fe-4eda-abfd-12bea975c224/sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i[4559,4572] [2021-11-25 18:49:11,842 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:49:11,842 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:49:11,843 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:49:11,843 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:49:11,844 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:49:11,855 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:49:11,855 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:49:11,856 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:49:11,857 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:49:11,892 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 18:49:11,893 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 18:49:11,894 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 18:49:11,895 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 18:49:11,917 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 18:49:11,918 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 18:49:11,918 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 18:49:11,919 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 18:49:11,919 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 18:49:11,920 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 18:49:11,966 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 18:49:12,080 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:49:12,080 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:49:12,132 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:49:12,431 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:49:12,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:49:12 WrapperNode [2021-11-25 18:49:12,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:49:12,433 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:49:12,433 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:49:12,433 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:49:12,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:49:12" (1/1) ... [2021-11-25 18:49:12,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:49:12" (1/1) ... [2021-11-25 18:49:12,708 INFO L137 Inliner]: procedures = 690, calls = 2620, calls flagged for inlining = 62, calls inlined = 10, statements flattened = 894 [2021-11-25 18:49:12,708 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:49:12,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:49:12,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:49:12,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:49:12,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:49:12" (1/1) ... [2021-11-25 18:49:12,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:49:12" (1/1) ... [2021-11-25 18:49:12,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:49:12" (1/1) ... [2021-11-25 18:49:12,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:49:12" (1/1) ... [2021-11-25 18:49:12,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:49:12" (1/1) ... [2021-11-25 18:49:12,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:49:12" (1/1) ... [2021-11-25 18:49:12,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:49:12" (1/1) ... [2021-11-25 18:49:12,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:49:12,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:49:12,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:49:12,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:49:12,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:49:12" (1/1) ... [2021-11-25 18:49:12,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:49:12,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4797ccf-18fe-4eda-abfd-12bea975c224/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:49:12,892 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4797ccf-18fe-4eda-abfd-12bea975c224/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:49:12,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4797ccf-18fe-4eda-abfd-12bea975c224/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:49:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-25 18:49:12,944 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-25 18:49:12,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:49:12,944 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-25 18:49:12,945 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-25 18:49:12,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:49:12,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 18:49:12,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 18:49:12,947 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_left_trim_pred [2021-11-25 18:49:12,947 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_left_trim_pred [2021-11-25 18:49:12,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:49:12,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:49:12,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:49:12,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:49:12,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:49:12,948 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-25 18:49:12,948 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-25 18:49:12,948 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-25 18:49:12,948 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-25 18:49:12,948 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 18:49:12,949 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 18:49:12,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:49:12,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:49:12,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:49:12,950 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~uint8_t~0~TO~int [2021-11-25 18:49:12,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~uint8_t~0~TO~int [2021-11-25 18:49:12,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:49:12,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:49:13,330 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:49:13,332 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:49:14,868 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:49:15,041 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:49:15,041 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 18:49:15,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:49:15 BoogieIcfgContainer [2021-11-25 18:49:15,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:49:15,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:49:15,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:49:15,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:49:15,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:49:09" (1/3) ... [2021-11-25 18:49:15,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233d206f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:49:15, skipping insertion in model container [2021-11-25 18:49:15,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:49:12" (2/3) ... [2021-11-25 18:49:15,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233d206f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:49:15, skipping insertion in model container [2021-11-25 18:49:15,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:49:15" (3/3) ... [2021-11-25 18:49:15,055 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_trim_pred_harness.i [2021-11-25 18:49:15,066 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:49:15,066 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:49:15,135 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:49:15,153 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:49:15,154 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:49:15,183 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) [2021-11-25 18:49:15,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-25 18:49:15,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:49:15,195 INFO L514 BasicCegarLoop]: 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] [2021-11-25 18:49:15,196 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:49:15,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:49:15,203 INFO L85 PathProgramCache]: Analyzing trace with hash 728730477, now seen corresponding path program 1 times [2021-11-25 18:49:15,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:49:15,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065808512] [2021-11-25 18:49:15,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:49:15,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:49:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:49:16,050 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-25 18:49:16,051 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:49:16,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065808512] [2021-11-25 18:49:16,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065808512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:49:16,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:49:16,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:49:16,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587455542] [2021-11-25 18:49:16,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:49:16,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 18:49:16,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:49:16,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 18:49:16,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:49:16,105 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) [2021-11-25 18:49:16,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:49:16,291 INFO L93 Difference]: Finished difference Result 156 states and 227 transitions. [2021-11-25 18:49:16,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 18:49:16,294 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 [2021-11-25 18:49:16,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:49:16,307 INFO L225 Difference]: With dead ends: 156 [2021-11-25 18:49:16,307 INFO L226 Difference]: Without dead ends: 91 [2021-11-25 18:49:16,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:49:16,322 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:49:16,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:49:16,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-11-25 18:49:16,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-11-25 18:49:16,410 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) [2021-11-25 18:49:16,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 125 transitions. [2021-11-25 18:49:16,422 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 125 transitions. Word has length 51 [2021-11-25 18:49:16,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:49:16,425 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 125 transitions. [2021-11-25 18:49:16,425 INFO L471 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) [2021-11-25 18:49:16,425 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 125 transitions. [2021-11-25 18:49:16,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-25 18:49:16,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:49:16,433 INFO L514 BasicCegarLoop]: 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] [2021-11-25 18:49:16,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:49:16,433 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:49:16,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:49:16,435 INFO L85 PathProgramCache]: Analyzing trace with hash -674183560, now seen corresponding path program 1 times [2021-11-25 18:49:16,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:49:16,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718889376] [2021-11-25 18:49:16,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:49:16,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:49:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:49:17,895 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-25 18:49:17,895 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:49:17,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718889376] [2021-11-25 18:49:17,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718889376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:49:17,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:49:17,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-25 18:49:17,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195713007] [2021-11-25 18:49:17,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:49:17,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 18:49:17,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:49:17,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 18:49:17,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-25 18:49:17,900 INFO L87 Difference]: Start difference. First operand 91 states and 125 transitions. Second operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 5 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-25 18:49:19,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:49:19,002 INFO L93 Difference]: Finished difference Result 123 states and 173 transitions. [2021-11-25 18:49:19,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 18:49:19,003 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 5 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 53 [2021-11-25 18:49:19,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:49:19,010 INFO L225 Difference]: With dead ends: 123 [2021-11-25 18:49:19,011 INFO L226 Difference]: Without dead ends: 121 [2021-11-25 18:49:19,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2021-11-25 18:49:19,019 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 94 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:49:19,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 777 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 18:49:19,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-25 18:49:19,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 100. [2021-11-25 18:49:19,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 52 states have (on average 1.1730769230769231) internal successors, (61), 54 states have internal predecessors, (61), 39 states have call successors, (39), 9 states have call predecessors, (39), 8 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2021-11-25 18:49:19,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 137 transitions. [2021-11-25 18:49:19,065 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 137 transitions. Word has length 53 [2021-11-25 18:49:19,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:49:19,067 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 137 transitions. [2021-11-25 18:49:19,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 5 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-25 18:49:19,067 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 137 transitions. [2021-11-25 18:49:19,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-25 18:49:19,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:49:19,074 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1] [2021-11-25 18:49:19,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:49:19,075 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:49:19,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:49:19,075 INFO L85 PathProgramCache]: Analyzing trace with hash -2146172008, now seen corresponding path program 1 times [2021-11-25 18:49:19,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:49:19,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874669247] [2021-11-25 18:49:19,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:49:19,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:49:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:49:20,794 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-25 18:49:20,794 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:49:20,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874669247] [2021-11-25 18:49:20,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874669247] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:49:20,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274322701] [2021-11-25 18:49:20,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:49:20,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:49:20,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4797ccf-18fe-4eda-abfd-12bea975c224/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:49:20,799 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4797ccf-18fe-4eda-abfd-12bea975c224/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:49:20,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4797ccf-18fe-4eda-abfd-12bea975c224/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:49:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:49:21,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 2567 conjuncts, 84 conjunts are in the unsatisfiable core [2021-11-25 18:49:21,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:49:21,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:49:21,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:49:21,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:49:26,359 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_3 Int)) (and (or (= 0 (mod (select (select |c_#memory_int| v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_3) 0) 18446744073709551616)) (not (= (select (select |c_#memory_$Pointer$.base| v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_3) 8) 0)) (not (= (select (select |c_#memory_$Pointer$.offset| v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_3) 8) 0))) (< 1 v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_3))) is different from true [2021-11-25 18:49:27,219 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_4 Int)) (and (< 1 v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_4) (or (= (mod (select (select |c_#memory_int| v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_4) 0) 18446744073709551616) 0) (not (= (select (select |c_#memory_$Pointer$.offset| v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_4) 8) 0)) (not (= (select (select |c_#memory_$Pointer$.base| v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_4) 8) 0))))) is different from true [2021-11-25 18:50:07,515 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:50:07,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 81 [2021-11-25 18:50:07,527 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:50:07,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 69 [2021-11-25 18:50:07,539 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:50:07,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 57 [2021-11-25 18:50:09,793 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 2 not checked. [2021-11-25 18:50:09,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:50:16,776 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 13430 disjunctions. This might take some time... [2021-11-25 18:50:28,443 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.