./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_c17225a8-f83f-49b9-922b-fc670cef34c3/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17225a8-f83f-49b9-922b-fc670cef34c3/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17225a8-f83f-49b9-922b-fc670cef34c3/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17225a8-f83f-49b9-922b-fc670cef34c3/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17225a8-f83f-49b9-922b-fc670cef34c3/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17225a8-f83f-49b9-922b-fc670cef34c3/bin/utaipan-g80aRyZoba --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 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 --- 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-b5237d8 [2022-11-22 00:08:19,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:08:19,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:08:19,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:08:19,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:08:19,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:08:19,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:08:19,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:08:19,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:08:19,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:08:19,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:08:19,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:08:19,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:08:19,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:08:19,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:08:19,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:08:19,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:08:19,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:08:19,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:08:19,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:08:19,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:08:19,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:08:19,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:08:19,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:08:19,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:08:19,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:08:19,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:08:19,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:08:19,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:08:19,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:08:19,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:08:19,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:08:19,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:08:19,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:08:19,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:08:19,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:08:19,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:08:19,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:08:19,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:08:19,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:08:19,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:08:19,210 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17225a8-f83f-49b9-922b-fc670cef34c3/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 00:08:19,269 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:08:19,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:08:19,270 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:08:19,270 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:08:19,271 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:08:19,272 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:08:19,272 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:08:19,272 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:08:19,272 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:08:19,273 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:08:19,274 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:08:19,274 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:08:19,274 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:08:19,275 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:08:19,275 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:08:19,275 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:08:19,275 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:08:19,276 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:08:19,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:08:19,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:08:19,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:08:19,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:08:19,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:08:19,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:08:19,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:08:19,279 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:08:19,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:08:19,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:08:19,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:08:19,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:08:19,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:08:19,281 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:08:19,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:08:19,281 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:08:19,282 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:08:19,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:08:19,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:08:19,282 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:08:19,283 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_c17225a8-f83f-49b9-922b-fc670cef34c3/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17225a8-f83f-49b9-922b-fc670cef34c3/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 [2022-11-22 00:08:19,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:08:19,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:08:19,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:08:19,588 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:08:19,588 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:08:19,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17225a8-f83f-49b9-922b-fc670cef34c3/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i [2022-11-22 00:08:22,647 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:08:23,284 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:08:23,285 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17225a8-f83f-49b9-922b-fc670cef34c3/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i [2022-11-22 00:08:23,342 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17225a8-f83f-49b9-922b-fc670cef34c3/bin/utaipan-g80aRyZoba/data/98d0f7017/0b0c6801f8eb4100ac94f4a36cc24ef0/FLAG07ee25d4d [2022-11-22 00:08:23,360 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17225a8-f83f-49b9-922b-fc670cef34c3/bin/utaipan-g80aRyZoba/data/98d0f7017/0b0c6801f8eb4100ac94f4a36cc24ef0 [2022-11-22 00:08:23,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:08:23,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:08:23,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:08:23,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:08:23,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:08:23,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:08:23" (1/1) ... [2022-11-22 00:08:23,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@145a48b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:23, skipping insertion in model container [2022-11-22 00:08:23,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:08:23" (1/1) ... [2022-11-22 00:08:23,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:08:23,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:08:23,802 WARN L237 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_c17225a8-f83f-49b9-922b-fc670cef34c3/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4494,4507] [2022-11-22 00:08:23,812 WARN L237 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_c17225a8-f83f-49b9-922b-fc670cef34c3/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4554,4567] [2022-11-22 00:08:24,919 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:08:24,920 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:08:24,921 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:08:24,921 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:08:24,923 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:08:24,937 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:08:24,938 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:08:24,940 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:08:24,940 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:08:25,554 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-22 00:08:25,562 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-22 00:08:25,563 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-22 00:08:25,565 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-22 00:08:25,567 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-22 00:08:25,568 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-22 00:08:25,568 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-22 00:08:25,569 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-22 00:08:25,570 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-22 00:08:25,571 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-22 00:08:25,804 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-22 00:08:25,923 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:08:25,924 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:08:26,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:08:26,146 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:08:26,174 WARN L237 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_c17225a8-f83f-49b9-922b-fc670cef34c3/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4494,4507] [2022-11-22 00:08:26,176 WARN L237 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_c17225a8-f83f-49b9-922b-fc670cef34c3/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4554,4567] [2022-11-22 00:08:26,232 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:08:26,232 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:08:26,232 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:08:26,233 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:08:26,234 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:08:26,253 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:08:26,255 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:08:26,257 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:08:26,257 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:08:26,313 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-22 00:08:26,314 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-22 00:08:26,315 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-22 00:08:26,316 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-22 00:08:26,317 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-22 00:08:26,318 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-22 00:08:26,319 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-22 00:08:26,319 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-22 00:08:26,320 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-22 00:08:26,320 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-22 00:08:26,359 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-22 00:08:26,439 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:08:26,440 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:08:26,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:08:26,725 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:08:26,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:26 WrapperNode [2022-11-22 00:08:26,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:08:26,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:08:26,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:08:26,741 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:08:26,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:26" (1/1) ... [2022-11-22 00:08:26,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:26" (1/1) ... [2022-11-22 00:08:26,995 INFO L138 Inliner]: procedures = 691, calls = 2676, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 967 [2022-11-22 00:08:26,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:08:26,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:08:26,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:08:26,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:08:27,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:26" (1/1) ... [2022-11-22 00:08:27,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:26" (1/1) ... [2022-11-22 00:08:27,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:26" (1/1) ... [2022-11-22 00:08:27,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:26" (1/1) ... [2022-11-22 00:08:27,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:26" (1/1) ... [2022-11-22 00:08:27,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:26" (1/1) ... [2022-11-22 00:08:27,107 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:26" (1/1) ... [2022-11-22 00:08:27,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:26" (1/1) ... [2022-11-22 00:08:27,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:08:27,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:08:27,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:08:27,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:08:27,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:26" (1/1) ... [2022-11-22 00:08:27,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:08:27,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17225a8-f83f-49b9-922b-fc670cef34c3/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:08:27,162 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17225a8-f83f-49b9-922b-fc670cef34c3/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:08:27,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17225a8-f83f-49b9-922b-fc670cef34c3/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:08:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-22 00:08:27,205 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-22 00:08:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:08:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-22 00:08:27,207 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-22 00:08:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:08:27,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-22 00:08:27,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-22 00:08:27,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 00:08:27,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:08:27,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 00:08:27,209 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2022-11-22 00:08:27,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2022-11-22 00:08:27,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:08:27,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:08:27,210 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-22 00:08:27,210 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-22 00:08:27,211 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-22 00:08:27,211 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-22 00:08:27,211 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 00:08:27,211 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 00:08:27,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:08:27,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 00:08:27,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 00:08:27,212 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-22 00:08:27,213 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-22 00:08:27,213 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2022-11-22 00:08:27,213 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2022-11-22 00:08:27,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:08:27,214 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-11-22 00:08:27,214 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-11-22 00:08:27,214 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-11-22 00:08:27,214 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-11-22 00:08:27,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:08:27,556 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:08:27,559 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:08:29,075 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:08:29,321 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:08:29,321 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-22 00:08:29,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:08:29 BoogieIcfgContainer [2022-11-22 00:08:29,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:08:29,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:08:29,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:08:29,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:08:29,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:08:23" (1/3) ... [2022-11-22 00:08:29,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@236bada3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:08:29, skipping insertion in model container [2022-11-22 00:08:29,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:26" (2/3) ... [2022-11-22 00:08:29,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@236bada3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:08:29, skipping insertion in model container [2022-11-22 00:08:29,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:08:29" (3/3) ... [2022-11-22 00:08:29,337 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_advance_harness.i [2022-11-22 00:08:29,357 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:08:29,358 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 00:08:29,425 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:08:29,437 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;@5517281b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:08:29,437 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 00:08:29,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 73 states have internal predecessors, (87), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-11-22 00:08:29,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-22 00:08:29,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:29,456 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:08:29,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:08:29,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:29,464 INFO L85 PathProgramCache]: Analyzing trace with hash -318388025, now seen corresponding path program 1 times [2022-11-22 00:08:29,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:29,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383227056] [2022-11-22 00:08:29,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:29,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:30,311 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-22 00:08:30,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:08:30,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383227056] [2022-11-22 00:08:30,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383227056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:30,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:08:30,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:08:30,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668902114] [2022-11-22 00:08:30,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:30,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 00:08:30,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:30,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 00:08:30,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 00:08:30,361 INFO L87 Difference]: Start difference. First operand has 140 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 73 states have internal predecessors, (87), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-22 00:08:30,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:08:30,791 INFO L93 Difference]: Finished difference Result 228 states and 344 transitions. [2022-11-22 00:08:30,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 00:08:30,798 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 61 [2022-11-22 00:08:30,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:08:30,809 INFO L225 Difference]: With dead ends: 228 [2022-11-22 00:08:30,809 INFO L226 Difference]: Without dead ends: 138 [2022-11-22 00:08:30,813 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 [2022-11-22 00:08:30,816 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:08:30,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 179 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 00:08:30,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-22 00:08:30,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2022-11-22 00:08:30,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 72 states have internal predecessors, (83), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-22 00:08:30,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 192 transitions. [2022-11-22 00:08:30,878 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 192 transitions. Word has length 61 [2022-11-22 00:08:30,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:08:30,880 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 192 transitions. [2022-11-22 00:08:30,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-22 00:08:30,880 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 192 transitions. [2022-11-22 00:08:30,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-22 00:08:30,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:30,884 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:08:30,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:08:30,884 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:08:30,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:30,885 INFO L85 PathProgramCache]: Analyzing trace with hash -402709972, now seen corresponding path program 1 times [2022-11-22 00:08:30,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:30,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833972229] [2022-11-22 00:08:30,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:30,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:46,720 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-22 00:08:46,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:08:46,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833972229] [2022-11-22 00:08:46,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833972229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:46,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:08:46,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-22 00:08:46,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367517051] [2022-11-22 00:08:46,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:46,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 00:08:46,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:46,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 00:08:46,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-22 00:08:46,723 INFO L87 Difference]: Start difference. First operand 138 states and 192 transitions. Second operand has 11 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-22 00:08:50,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:08:50,553 INFO L93 Difference]: Finished difference Result 188 states and 264 transitions. [2022-11-22 00:08:50,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 00:08:50,556 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 64 [2022-11-22 00:08:50,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:08:50,558 INFO L225 Difference]: With dead ends: 188 [2022-11-22 00:08:50,558 INFO L226 Difference]: Without dead ends: 186 [2022-11-22 00:08:50,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-22 00:08:50,560 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 121 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:08:50,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 1610 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-22 00:08:50,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-22 00:08:50,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 142. [2022-11-22 00:08:50,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 74 states have (on average 1.162162162162162) internal successors, (86), 75 states have internal predecessors, (86), 55 states have call successors, (55), 12 states have call predecessors, (55), 12 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-22 00:08:50,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 195 transitions. [2022-11-22 00:08:50,621 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 195 transitions. Word has length 64 [2022-11-22 00:08:50,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:08:50,621 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 195 transitions. [2022-11-22 00:08:50,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-22 00:08:50,622 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 195 transitions. [2022-11-22 00:08:50,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-22 00:08:50,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:50,629 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:08:50,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:08:50,629 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:08:50,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:50,634 INFO L85 PathProgramCache]: Analyzing trace with hash -660648870, now seen corresponding path program 1 times [2022-11-22 00:08:50,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:50,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738312128] [2022-11-22 00:08:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:50,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:09:15,351 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-22 00:09:15,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:09:15,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738312128] [2022-11-22 00:09:15,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738312128] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:09:15,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751159395] [2022-11-22 00:09:15,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:09:15,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:09:15,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17225a8-f83f-49b9-922b-fc670cef34c3/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:09:15,357 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17225a8-f83f-49b9-922b-fc670cef34c3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:09:15,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17225a8-f83f-49b9-922b-fc670cef34c3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:09:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:09:25,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 2864 conjuncts, 239 conjunts are in the unsatisfiable core [2022-11-22 00:09:25,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:09:26,106 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 00:09:26,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-22 00:09:27,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 00:09:27,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 00:09:28,047 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 9 [2022-11-22 00:09:28,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:28,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:28,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-11-22 00:09:28,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-11-22 00:09:33,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2022-11-22 00:09:33,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:33,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:33,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:33,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:33,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 69 [2022-11-22 00:09:33,462 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-22 00:09:33,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 34 treesize of output 53 [2022-11-22 00:09:45,464 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-22 00:09:45,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 78 [2022-11-22 00:09:45,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:45,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:09:45,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 39 [2022-11-22 00:09:45,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2022-11-22 00:09:45,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:45,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2022-11-22 00:09:45,789 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2022-11-22 00:09:45,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 32 [2022-11-22 00:09:51,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:51,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 73 [2022-11-22 00:09:51,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:51,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 39 [2022-11-22 00:09:51,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-22 00:09:51,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:51,856 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:09:51,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 58 [2022-11-22 00:09:51,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 63 [2022-11-22 00:10:24,947 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:10:24,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 176 treesize of output 128 [2022-11-22 00:10:25,087 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:10:25,088 INFO L350 Elim1Store]: Elim1 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 35 treesize of output 27 [2022-11-22 00:10:25,602 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 00:10:25,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:10:28,339 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2022-11-22 00:17:58,652 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.