./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9736f575-dc86-4c90-9011-6476604e7124/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9736f575-dc86-4c90-9011-6476604e7124/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_9736f575-dc86-4c90-9011-6476604e7124/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9736f575-dc86-4c90-9011-6476604e7124/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9736f575-dc86-4c90-9011-6476604e7124/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_9736f575-dc86-4c90-9011-6476604e7124/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 32a406239684e899577576103e146c0b88a65f19a1f620e7a11415e96a39c63a --- 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 00:18:24,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:18:24,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:18:24,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:18:24,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:18:24,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:18:24,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:18:24,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:18:24,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:18:24,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:18:24,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:18:24,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:18:24,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:18:24,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:18:24,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:18:24,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:18:24,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:18:24,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:18:24,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:18:24,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:18:24,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:18:24,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:18:24,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:18:24,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:18:24,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:18:24,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:18:24,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:18:24,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:18:24,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:18:24,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:18:24,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:18:24,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:18:24,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:18:24,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:18:24,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:18:24,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:18:24,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:18:24,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:18:24,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:18:24,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:18:24,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:18:24,377 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9736f575-dc86-4c90-9011-6476604e7124/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 00:18:24,420 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:18:24,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:18:24,423 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:18:24,423 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:18:24,424 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:18:24,425 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:18:24,425 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:18:24,425 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:18:24,425 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:18:24,426 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:18:24,427 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:18:24,427 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:18:24,427 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:18:24,427 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:18:24,428 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:18:24,428 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:18:24,428 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:18:24,428 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:18:24,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:18:24,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:18:24,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:18:24,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:18:24,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:18:24,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:18:24,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:18:24,431 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:18:24,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:18:24,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:18:24,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:18:24,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:18:24,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:18:24,433 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:18:24,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:18:24,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:18:24,434 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:18:24,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:18:24,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:18:24,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:18:24,435 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_9736f575-dc86-4c90-9011-6476604e7124/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9736f575-dc86-4c90-9011-6476604e7124/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32a406239684e899577576103e146c0b88a65f19a1f620e7a11415e96a39c63a [2022-11-22 00:18:24,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:18:24,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:18:24,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:18:24,758 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:18:24,758 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:18:24,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9736f575-dc86-4c90-9011-6476604e7124/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i [2022-11-22 00:18:27,721 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:18:28,481 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:18:28,481 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9736f575-dc86-4c90-9011-6476604e7124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i [2022-11-22 00:18:28,548 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9736f575-dc86-4c90-9011-6476604e7124/bin/utaipan-g80aRyZoba/data/5db28f54d/beea786ff10846fc8056b9db84ec8a77/FLAG57689fa08 [2022-11-22 00:18:28,567 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9736f575-dc86-4c90-9011-6476604e7124/bin/utaipan-g80aRyZoba/data/5db28f54d/beea786ff10846fc8056b9db84ec8a77 [2022-11-22 00:18:28,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:18:28,572 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:18:28,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:18:28,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:18:28,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:18:28,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:18:28" (1/1) ... [2022-11-22 00:18:28,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44da824a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:28, skipping insertion in model container [2022-11-22 00:18:28,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:18:28" (1/1) ... [2022-11-22 00:18:28,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:18:28,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:18:33,289 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_9736f575-dc86-4c90-9011-6476604e7124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[512219,512232] [2022-11-22 00:18:33,293 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_9736f575-dc86-4c90-9011-6476604e7124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[512366,512379] [2022-11-22 00:18:33,294 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_9736f575-dc86-4c90-9011-6476604e7124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[512505,512518] [2022-11-22 00:18:33,295 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_9736f575-dc86-4c90-9011-6476604e7124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[512663,512676] [2022-11-22 00:18:33,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:18:33,390 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:18:34,043 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_9736f575-dc86-4c90-9011-6476604e7124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[512219,512232] [2022-11-22 00:18:34,054 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_9736f575-dc86-4c90-9011-6476604e7124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[512366,512379] [2022-11-22 00:18:34,054 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_9736f575-dc86-4c90-9011-6476604e7124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[512505,512518] [2022-11-22 00:18:34,055 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_9736f575-dc86-4c90-9011-6476604e7124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[512663,512676] [2022-11-22 00:18:34,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:18:34,490 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:18:34,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:34 WrapperNode [2022-11-22 00:18:34,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:18:34,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:18:34,493 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:18:34,493 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:18:34,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:34" (1/1) ... [2022-11-22 00:18:34,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:34" (1/1) ... [2022-11-22 00:18:35,099 INFO L138 Inliner]: procedures = 578, calls = 6341, calls flagged for inlining = 344, calls inlined = 320, statements flattened = 11436 [2022-11-22 00:18:35,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:18:35,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:18:35,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:18:35,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:18:35,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:34" (1/1) ... [2022-11-22 00:18:35,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:34" (1/1) ... [2022-11-22 00:18:35,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:34" (1/1) ... [2022-11-22 00:18:35,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:34" (1/1) ... [2022-11-22 00:18:35,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:34" (1/1) ... [2022-11-22 00:18:35,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:34" (1/1) ... [2022-11-22 00:18:35,655 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:34" (1/1) ... [2022-11-22 00:18:35,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:34" (1/1) ... [2022-11-22 00:18:35,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:18:35,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:18:35,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:18:35,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:18:35,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:34" (1/1) ... [2022-11-22 00:18:35,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:18:35,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9736f575-dc86-4c90-9011-6476604e7124/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:18:35,783 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9736f575-dc86-4c90-9011-6476604e7124/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:18:35,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9736f575-dc86-4c90-9011-6476604e7124/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:18:35,829 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-22 00:18:35,829 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-22 00:18:35,829 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_irq_disable [2022-11-22 00:18:35,829 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_irq_disable [2022-11-22 00:18:35,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 00:18:35,830 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 00:18:35,830 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-22 00:18:35,830 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-22 00:18:35,830 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_intr [2022-11-22 00:18:35,830 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_intr [2022-11-22 00:18:35,831 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 00:18:35,831 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 00:18:35,831 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 00:18:35,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 00:18:35,831 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_minnow_platform_init [2022-11-22 00:18:35,831 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_minnow_platform_init [2022-11-22 00:18:35,832 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_open [2022-11-22 00:18:35,832 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_open [2022-11-22 00:18:35,832 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2022-11-22 00:18:35,833 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2022-11-22 00:18:35,833 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2022-11-22 00:18:35,834 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2022-11-22 00:18:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_reinit_locked [2022-11-22 00:18:35,834 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_reinit_locked [2022-11-22 00:18:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_hal_power_up_phy [2022-11-22 00:18:35,835 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_hal_power_up_phy [2022-11-22 00:18:35,835 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_setup_tx_resources [2022-11-22 00:18:35,835 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_setup_tx_resources [2022-11-22 00:18:35,835 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-22 00:18:35,835 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-22 00:18:35,835 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-22 00:18:35,836 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-22 00:18:35,836 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-22 00:18:35,836 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-22 00:18:35,836 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_netpoll [2022-11-22 00:18:35,836 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_netpoll [2022-11-22 00:18:35,837 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_plat_init_hw [2022-11-22 00:18:35,837 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_plat_init_hw [2022-11-22 00:18:35,837 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_free_rx_resources [2022-11-22 00:18:35,837 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_free_rx_resources [2022-11-22 00:18:35,837 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_free_tx_resources [2022-11-22 00:18:35,837 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_free_tx_resources [2022-11-22 00:18:35,838 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-22 00:18:35,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-22 00:18:35,838 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_pch_gbe_exit_module_17_2 [2022-11-22 00:18:35,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_pch_gbe_exit_module_17_2 [2022-11-22 00:18:35,839 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-22 00:18:35,839 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-22 00:18:35,839 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-22 00:18:35,839 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-22 00:18:35,840 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2022-11-22 00:18:35,840 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2022-11-22 00:18:35,840 INFO L130 BoogieDeclarations]: Found specification of procedure pch_set_station_address [2022-11-22 00:18:35,840 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_set_station_address [2022-11-22 00:18:35,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev_26 [2022-11-22 00:18:35,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev_26 [2022-11-22 00:18:35,841 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-22 00:18:35,841 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-22 00:18:35,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 00:18:35,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 00:18:35,841 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mdio_write [2022-11-22 00:18:35,841 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mdio_write [2022-11-22 00:18:35,841 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 00:18:35,842 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 00:18:35,842 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-22 00:18:35,842 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-22 00:18:35,842 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-22 00:18:35,842 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-22 00:18:35,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 00:18:35,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 00:18:35,844 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2022-11-22 00:18:35,844 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2022-11-22 00:18:35,844 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-22 00:18:35,844 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-22 00:18:35,845 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-22 00:18:35,845 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-22 00:18:35,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:18:35,846 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_phy_power_up [2022-11-22 00:18:35,846 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_phy_power_up [2022-11-22 00:18:35,846 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-22 00:18:35,846 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-22 00:18:35,846 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_resume [2022-11-22 00:18:35,846 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_resume [2022-11-22 00:18:35,847 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 00:18:35,847 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 00:18:35,847 INFO L130 BoogieDeclarations]: Found specification of procedure pch_ch_event_write [2022-11-22 00:18:35,848 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_ch_event_write [2022-11-22 00:18:35,848 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2022-11-22 00:18:35,848 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2022-11-22 00:18:35,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 00:18:35,848 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-22 00:18:35,848 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-22 00:18:35,848 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 00:18:35,849 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 00:18:35,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-22 00:18:35,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-22 00:18:35,849 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-22 00:18:35,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-22 00:18:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_enable_dma_rx [2022-11-22 00:18:35,850 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_enable_dma_rx [2022-11-22 00:18:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_configure_rx [2022-11-22 00:18:35,850 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_configure_rx [2022-11-22 00:18:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 00:18:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_wait_clr_bit [2022-11-22 00:18:35,852 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_wait_clr_bit [2022-11-22 00:18:35,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 00:18:35,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 00:18:35,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:18:35,856 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-22 00:18:35,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-22 00:18:35,857 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2022-11-22 00:18:35,858 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2022-11-22 00:18:35,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 00:18:35,858 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 00:18:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_remove [2022-11-22 00:18:35,868 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_remove [2022-11-22 00:18:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-22 00:18:35,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-22 00:18:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-22 00:18:35,868 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-22 00:18:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 00:18:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 00:18:35,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 00:18:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 00:18:35,869 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-22 00:18:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-22 00:18:35,869 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mac_force_mac_fc [2022-11-22 00:18:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mac_force_mac_fc [2022-11-22 00:18:35,870 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_suspend [2022-11-22 00:18:35,870 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_suspend [2022-11-22 00:18:35,870 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-22 00:18:35,870 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-22 00:18:35,870 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-22 00:18:35,870 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-22 00:18:35,870 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-22 00:18:35,871 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-22 00:18:35,871 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_set_value [2022-11-22 00:18:35,871 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_set_value [2022-11-22 00:18:35,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 00:18:35,871 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 00:18:35,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 00:18:35,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 00:18:35,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 00:18:35,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-22 00:18:35,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-22 00:18:35,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_5 [2022-11-22 00:18:35,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_5 [2022-11-22 00:18:35,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-22 00:18:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-22 00:18:35,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-22 00:18:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-22 00:18:35,873 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-22 00:18:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-22 00:18:35,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:18:35,873 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-22 00:18:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-22 00:18:35,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 00:18:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 00:18:35,874 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 00:18:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 00:18:35,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 00:18:35,875 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 00:18:35,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 00:18:35,875 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-22 00:18:35,875 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-22 00:18:35,875 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 00:18:35,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 00:18:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-22 00:18:35,876 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-22 00:18:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2022-11-22 00:18:35,876 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2022-11-22 00:18:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mac_set_wol_event [2022-11-22 00:18:35,876 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mac_set_wol_event [2022-11-22 00:18:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 00:18:35,877 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 00:18:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mac_ctrl_miim [2022-11-22 00:18:35,877 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mac_ctrl_miim [2022-11-22 00:18:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 00:18:35,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 00:18:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_get_regs_len [2022-11-22 00:18:35,879 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_get_regs_len [2022-11-22 00:18:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-22 00:18:35,879 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-22 00:18:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2022-11-22 00:18:35,880 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2022-11-22 00:18:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:18:35,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:18:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_alloc_rx_buffers [2022-11-22 00:18:35,880 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_alloc_rx_buffers [2022-11-22 00:18:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure __pch_gbe_suspend [2022-11-22 00:18:35,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __pch_gbe_suspend [2022-11-22 00:18:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2022-11-22 00:18:35,881 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2022-11-22 00:18:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_plat_get_bus_info [2022-11-22 00:18:35,881 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_plat_get_bus_info [2022-11-22 00:18:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-22 00:18:35,881 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-22 00:18:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_phy_power_down [2022-11-22 00:18:35,882 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_phy_power_down [2022-11-22 00:18:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 00:18:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 00:18:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 00:18:35,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 00:18:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure csum_tcpudp_magic [2022-11-22 00:18:35,882 INFO L138 BoogieDeclarations]: Found implementation of procedure csum_tcpudp_magic [2022-11-22 00:18:35,883 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_update_stats [2022-11-22 00:18:35,883 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_update_stats [2022-11-22 00:18:35,883 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-22 00:18:35,883 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-22 00:18:35,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-22 00:18:35,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-22 00:18:35,883 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum [2022-11-22 00:18:35,884 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum [2022-11-22 00:18:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mdio_read [2022-11-22 00:18:35,884 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mdio_read [2022-11-22 00:18:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_clean_rx_ring [2022-11-22 00:18:35,884 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_clean_rx_ring [2022-11-22 00:18:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-22 00:18:35,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-22 00:18:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_up [2022-11-22 00:18:35,885 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_up [2022-11-22 00:18:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 00:18:35,885 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 00:18:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 00:18:35,885 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 00:18:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-11-22 00:18:35,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-11-22 00:18:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ethtool_gset [2022-11-22 00:18:35,886 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ethtool_gset [2022-11-22 00:18:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_clean_tx_ring [2022-11-22 00:18:35,886 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_clean_tx_ring [2022-11-22 00:18:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_reset [2022-11-22 00:18:35,891 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_reset [2022-11-22 00:18:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-22 00:18:35,891 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-22 00:18:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies [2022-11-22 00:18:35,891 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies [2022-11-22 00:18:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev_stop_14_2 [2022-11-22 00:18:35,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev_stop_14_2 [2022-11-22 00:18:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_stop [2022-11-22 00:18:35,892 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_stop [2022-11-22 00:18:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:18:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_ktime [2022-11-22 00:18:35,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_ktime [2022-11-22 00:18:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2022-11-22 00:18:35,893 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2022-11-22 00:18:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-22 00:18:35,894 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-22 00:18:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 00:18:35,894 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 00:18:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value_probe [2022-11-22 00:18:35,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value_probe [2022-11-22 00:18:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 00:18:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_io_resume [2022-11-22 00:18:35,895 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_io_resume [2022-11-22 00:18:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~s32~0 [2022-11-22 00:18:35,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~s32~0 [2022-11-22 00:18:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure pch_ch_event_read [2022-11-22 00:18:35,895 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_ch_event_read [2022-11-22 00:18:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 00:18:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-22 00:18:35,896 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-22 00:18:35,896 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-22 00:18:35,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-22 00:18:35,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-11-22 00:18:35,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-11-22 00:18:35,896 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_nway_reset [2022-11-22 00:18:35,896 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_nway_reset [2022-11-22 00:18:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-22 00:18:35,897 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-22 00:18:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-22 00:18:35,897 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-22 00:18:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_irq_enable [2022-11-22 00:18:35,897 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_irq_enable [2022-11-22 00:18:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-22 00:18:35,897 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-22 00:18:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 00:18:35,898 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 00:18:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_phy_hw_reset [2022-11-22 00:18:35,898 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_phy_hw_reset [2022-11-22 00:18:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_tx_timeout [2022-11-22 00:18:35,898 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_tx_timeout [2022-11-22 00:18:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure mii_link_ok [2022-11-22 00:18:35,898 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_link_ok [2022-11-22 00:18:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 00:18:35,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 00:18:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-22 00:18:35,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-22 00:18:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ethtool_sset [2022-11-22 00:18:35,899 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ethtool_sset [2022-11-22 00:18:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_hal_power_down_phy [2022-11-22 00:18:35,900 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_hal_power_down_phy [2022-11-22 00:18:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-22 00:18:35,900 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-22 00:18:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_set_mode [2022-11-22 00:18:35,900 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_set_mode [2022-11-22 00:18:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 00:18:35,900 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 00:18:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 00:18:35,901 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 00:18:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_setup_rx_resources [2022-11-22 00:18:35,901 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_setup_rx_resources [2022-11-22 00:18:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 00:18:35,901 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 00:18:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 00:18:35,901 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 00:18:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_validate_option [2022-11-22 00:18:35,902 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_validate_option [2022-11-22 00:18:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mac_reset_hw [2022-11-22 00:18:35,902 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mac_reset_hw [2022-11-22 00:18:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure udp_hdr [2022-11-22 00:18:35,902 INFO L138 BoogieDeclarations]: Found implementation of procedure udp_hdr [2022-11-22 00:18:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:18:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_setup_rctl [2022-11-22 00:18:35,903 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_setup_rctl [2022-11-22 00:18:35,903 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_phy_sw_reset [2022-11-22 00:18:35,903 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_phy_sw_reset [2022-11-22 00:18:35,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 00:18:35,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 00:18:35,903 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_hal_phy_hw_reset [2022-11-22 00:18:35,903 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_hal_phy_hw_reset [2022-11-22 00:18:35,903 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_phy_write_reg_miic [2022-11-22 00:18:35,904 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_phy_write_reg_miic [2022-11-22 00:18:35,904 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-22 00:18:35,904 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-22 00:18:35,904 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-22 00:18:35,904 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-22 00:18:35,904 INFO L130 BoogieDeclarations]: Found specification of procedure pch_ch_control_write [2022-11-22 00:18:35,904 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_ch_control_write [2022-11-22 00:18:35,905 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_set_multi [2022-11-22 00:18:35,905 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_set_multi [2022-11-22 00:18:35,905 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_shutdown [2022-11-22 00:18:35,905 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_shutdown [2022-11-22 00:18:35,905 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-22 00:18:35,905 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-22 00:18:35,905 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-22 00:18:35,905 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-22 00:18:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_phy_read_reg_miic [2022-11-22 00:18:35,906 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_phy_read_reg_miic [2022-11-22 00:18:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 00:18:35,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 00:18:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mac_read_mac_addr [2022-11-22 00:18:35,906 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mac_read_mac_addr [2022-11-22 00:18:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_set_rgmii_ctrl [2022-11-22 00:18:35,907 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_set_rgmii_ctrl [2022-11-22 00:18:35,907 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed [2022-11-22 00:18:35,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed [2022-11-22 00:18:35,907 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_down [2022-11-22 00:18:35,907 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_down [2022-11-22 00:18:35,907 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_free_irq [2022-11-22 00:18:35,907 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_free_irq [2022-11-22 00:18:35,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:18:35,908 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mac_mar_set [2022-11-22 00:18:35,908 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mac_mar_set [2022-11-22 00:18:35,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 00:18:35,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 00:18:37,556 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:18:37,561 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:18:38,004 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 00:18:57,990 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 00:18:58,625 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:19:01,915 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:19:01,916 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 00:19:01,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:19:01 BoogieIcfgContainer [2022-11-22 00:19:01,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:19:01,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:19:01,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:19:01,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:19:01,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:18:28" (1/3) ... [2022-11-22 00:19:01,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff93dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:19:01, skipping insertion in model container [2022-11-22 00:19:01,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:34" (2/3) ... [2022-11-22 00:19:01,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff93dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:19:01, skipping insertion in model container [2022-11-22 00:19:01,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:19:01" (3/3) ... [2022-11-22 00:19:01,939 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i [2022-11-22 00:19:01,962 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:19:01,963 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-22 00:19:02,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:19:02,096 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;@61b7aa39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:19:02,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-22 00:19:02,112 INFO L276 IsEmpty]: Start isEmpty. Operand has 2532 states, 1510 states have (on average 1.290728476821192) internal successors, (1949), 1554 states have internal predecessors, (1949), 852 states have call successors, (852), 170 states have call predecessors, (852), 169 states have return successors, (842), 825 states have call predecessors, (842), 842 states have call successors, (842) [2022-11-22 00:19:02,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-22 00:19:02,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:19:02,142 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 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, 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 00:19:02,143 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:19:02,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:19:02,151 INFO L85 PathProgramCache]: Analyzing trace with hash 545800209, now seen corresponding path program 1 times [2022-11-22 00:19:02,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:19:02,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083762374] [2022-11-22 00:19:02,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:19:02,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:19:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:19:03,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1725 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1725 trivial. 0 not checked. [2022-11-22 00:19:03,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:19:03,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083762374] [2022-11-22 00:19:03,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083762374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:19:03,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:19:03,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:19:03,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457843671] [2022-11-22 00:19:03,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:19:03,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:19:03,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:19:03,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:19:03,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:19:03,992 INFO L87 Difference]: Start difference. First operand has 2532 states, 1510 states have (on average 1.290728476821192) internal successors, (1949), 1554 states have internal predecessors, (1949), 852 states have call successors, (852), 170 states have call predecessors, (852), 169 states have return successors, (842), 825 states have call predecessors, (842), 842 states have call successors, (842) Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-22 00:19:09,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:19:13,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:19:13,714 INFO L93 Difference]: Finished difference Result 7295 states and 10616 transitions. [2022-11-22 00:19:13,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:19:13,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 234 [2022-11-22 00:19:13,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:19:13,799 INFO L225 Difference]: With dead ends: 7295 [2022-11-22 00:19:13,799 INFO L226 Difference]: Without dead ends: 4792 [2022-11-22 00:19:13,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:19:13,834 INFO L413 NwaCegarLoop]: 3831 mSDtfsCounter, 3291 mSDsluCounter, 3038 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3291 SdHoareTripleChecker+Valid, 6869 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:19:13,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3291 Valid, 6869 Invalid, 1128 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 1118 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2022-11-22 00:19:13,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4792 states. [2022-11-22 00:19:14,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4792 to 4789. [2022-11-22 00:19:14,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4789 states, 2861 states have (on average 1.283117790982174) internal successors, (3671), 2945 states have internal predecessors, (3671), 1592 states have call successors, (1592), 335 states have call predecessors, (1592), 334 states have return successors, (1589), 1555 states have call predecessors, (1589), 1589 states have call successors, (1589) [2022-11-22 00:19:14,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4789 states to 4789 states and 6852 transitions. [2022-11-22 00:19:14,321 INFO L78 Accepts]: Start accepts. Automaton has 4789 states and 6852 transitions. Word has length 234 [2022-11-22 00:19:14,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:19:14,324 INFO L495 AbstractCegarLoop]: Abstraction has 4789 states and 6852 transitions. [2022-11-22 00:19:14,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-22 00:19:14,325 INFO L276 IsEmpty]: Start isEmpty. Operand 4789 states and 6852 transitions. [2022-11-22 00:19:14,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-22 00:19:14,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:19:14,346 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 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, 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 00:19:14,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:19:14,347 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:19:14,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:19:14,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1339043485, now seen corresponding path program 1 times [2022-11-22 00:19:14,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:19:14,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662259288] [2022-11-22 00:19:14,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:19:14,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:19:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:19:15,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2022-11-22 00:19:15,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:19:15,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662259288] [2022-11-22 00:19:15,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662259288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:19:15,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:19:15,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:19:15,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735424133] [2022-11-22 00:19:15,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:19:15,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:19:15,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:19:15,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:19:15,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:19:15,552 INFO L87 Difference]: Start difference. First operand 4789 states and 6852 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-22 00:19:21,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:19:25,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:19:25,619 INFO L93 Difference]: Finished difference Result 11378 states and 16229 transitions. [2022-11-22 00:19:25,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:19:25,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 248 [2022-11-22 00:19:25,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:19:25,670 INFO L225 Difference]: With dead ends: 11378 [2022-11-22 00:19:25,670 INFO L226 Difference]: Without dead ends: 6632 [2022-11-22 00:19:25,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:19:25,697 INFO L413 NwaCegarLoop]: 3760 mSDtfsCounter, 2920 mSDsluCounter, 3004 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2920 SdHoareTripleChecker+Valid, 6764 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:19:25,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2920 Valid, 6764 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1158 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2022-11-22 00:19:25,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6632 states. [2022-11-22 00:19:26,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6632 to 6623. [2022-11-22 00:19:26,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6623 states, 3967 states have (on average 1.2772876228888328) internal successors, (5067), 4087 states have internal predecessors, (5067), 2169 states have call successors, (2169), 487 states have call predecessors, (2169), 485 states have return successors, (2166), 2114 states have call predecessors, (2166), 2166 states have call successors, (2166) [2022-11-22 00:19:26,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6623 states to 6623 states and 9402 transitions. [2022-11-22 00:19:26,307 INFO L78 Accepts]: Start accepts. Automaton has 6623 states and 9402 transitions. Word has length 248 [2022-11-22 00:19:26,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:19:26,309 INFO L495 AbstractCegarLoop]: Abstraction has 6623 states and 9402 transitions. [2022-11-22 00:19:26,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-22 00:19:26,310 INFO L276 IsEmpty]: Start isEmpty. Operand 6623 states and 9402 transitions. [2022-11-22 00:19:26,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-22 00:19:26,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:19:26,322 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 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, 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 00:19:26,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:19:26,322 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:19:26,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:19:26,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1245753238, now seen corresponding path program 1 times [2022-11-22 00:19:26,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:19:26,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389918200] [2022-11-22 00:19:26,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:19:26,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:19:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:19:27,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1725 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1725 trivial. 0 not checked. [2022-11-22 00:19:27,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:19:27,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389918200] [2022-11-22 00:19:27,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389918200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:19:27,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:19:27,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:19:27,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138105037] [2022-11-22 00:19:27,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:19:27,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:19:27,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:19:27,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:19:27,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:19:27,210 INFO L87 Difference]: Start difference. First operand 6623 states and 9402 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-22 00:19:33,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:19:36,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:19:39,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:19:39,275 INFO L93 Difference]: Finished difference Result 17453 states and 24767 transitions. [2022-11-22 00:19:39,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:19:39,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 261 [2022-11-22 00:19:39,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:19:39,355 INFO L225 Difference]: With dead ends: 17453 [2022-11-22 00:19:39,355 INFO L226 Difference]: Without dead ends: 10873 [2022-11-22 00:19:39,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:19:39,390 INFO L413 NwaCegarLoop]: 3804 mSDtfsCounter, 3225 mSDsluCounter, 3026 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3225 SdHoareTripleChecker+Valid, 6830 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:19:39,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3225 Valid, 6830 Invalid, 1139 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 1124 Invalid, 2 Unknown, 0 Unchecked, 11.2s Time] [2022-11-22 00:19:39,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10873 states. [2022-11-22 00:19:40,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10873 to 10859. [2022-11-22 00:19:40,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10859 states, 6501 states have (on average 1.274880787571143) internal successors, (8288), 6708 states have internal predecessors, (8288), 3551 states have call successors, (3551), 808 states have call predecessors, (3551), 805 states have return successors, (3548), 3452 states have call predecessors, (3548), 3548 states have call successors, (3548) [2022-11-22 00:19:40,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10859 states to 10859 states and 15387 transitions. [2022-11-22 00:19:40,117 INFO L78 Accepts]: Start accepts. Automaton has 10859 states and 15387 transitions. Word has length 261 [2022-11-22 00:19:40,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:19:40,118 INFO L495 AbstractCegarLoop]: Abstraction has 10859 states and 15387 transitions. [2022-11-22 00:19:40,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-22 00:19:40,119 INFO L276 IsEmpty]: Start isEmpty. Operand 10859 states and 15387 transitions. [2022-11-22 00:19:40,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-11-22 00:19:40,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:19:40,132 INFO L195 NwaCegarLoop]: trace histogram [25, 21, 21, 21, 21, 21, 21, 5, 5, 2, 2, 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, 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 00:19:40,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:19:40,132 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:19:40,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:19:40,133 INFO L85 PathProgramCache]: Analyzing trace with hash 966496822, now seen corresponding path program 1 times [2022-11-22 00:19:40,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:19:40,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389082967] [2022-11-22 00:19:40,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:19:40,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:19:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:19:41,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1894 trivial. 0 not checked. [2022-11-22 00:19:41,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:19:41,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389082967] [2022-11-22 00:19:41,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389082967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:19:41,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:19:41,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:19:41,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37265063] [2022-11-22 00:19:41,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:19:41,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:19:41,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:19:41,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:19:41,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:19:41,819 INFO L87 Difference]: Start difference. First operand 10859 states and 15387 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-22 00:19:47,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:19:54,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:19:54,428 INFO L93 Difference]: Finished difference Result 19573 states and 27737 transitions. [2022-11-22 00:19:54,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:19:54,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 277 [2022-11-22 00:19:54,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:19:54,581 INFO L225 Difference]: With dead ends: 19573 [2022-11-22 00:19:54,582 INFO L226 Difference]: Without dead ends: 19534 [2022-11-22 00:19:54,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:19:54,608 INFO L413 NwaCegarLoop]: 3819 mSDtfsCounter, 3316 mSDsluCounter, 6805 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3316 SdHoareTripleChecker+Valid, 10624 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1643 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:19:54,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3316 Valid, 10624 Invalid, 1644 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1643 Invalid, 1 Unknown, 0 Unchecked, 11.8s Time] [2022-11-22 00:19:54,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19534 states. [2022-11-22 00:19:55,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19534 to 19531. [2022-11-22 00:19:55,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19531 states, 11697 states have (on average 1.2751987689151065) internal successors, (14916), 12062 states have internal predecessors, (14916), 6375 states have call successors, (6375), 1460 states have call predecessors, (6375), 1457 states have return successors, (6372), 6206 states have call predecessors, (6372), 6372 states have call successors, (6372) [2022-11-22 00:19:55,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19531 states to 19531 states and 27663 transitions. [2022-11-22 00:19:55,935 INFO L78 Accepts]: Start accepts. Automaton has 19531 states and 27663 transitions. Word has length 277 [2022-11-22 00:19:55,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:19:55,936 INFO L495 AbstractCegarLoop]: Abstraction has 19531 states and 27663 transitions. [2022-11-22 00:19:55,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-22 00:19:55,936 INFO L276 IsEmpty]: Start isEmpty. Operand 19531 states and 27663 transitions. [2022-11-22 00:19:55,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-11-22 00:19:55,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:19:55,964 INFO L195 NwaCegarLoop]: trace histogram [25, 21, 21, 21, 21, 21, 21, 5, 5, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:19:55,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:19:55,965 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:19:55,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:19:55,966 INFO L85 PathProgramCache]: Analyzing trace with hash -319677159, now seen corresponding path program 1 times [2022-11-22 00:19:55,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:19:55,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593802217] [2022-11-22 00:19:55,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:19:55,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:19:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:19:56,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1893 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1890 trivial. 0 not checked. [2022-11-22 00:19:56,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:19:56,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593802217] [2022-11-22 00:19:56,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593802217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:19:56,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:19:56,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:19:56,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227403113] [2022-11-22 00:19:56,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:19:56,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:19:56,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:19:56,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:19:56,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:19:56,777 INFO L87 Difference]: Start difference. First operand 19531 states and 27663 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-22 00:20:03,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:20:08,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:20:08,549 INFO L93 Difference]: Finished difference Result 45231 states and 64075 transitions. [2022-11-22 00:20:08,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:20:08,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 297 [2022-11-22 00:20:08,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:20:08,729 INFO L225 Difference]: With dead ends: 45231 [2022-11-22 00:20:08,729 INFO L226 Difference]: Without dead ends: 27712 [2022-11-22 00:20:08,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:20:08,836 INFO L413 NwaCegarLoop]: 5458 mSDtfsCounter, 2914 mSDsluCounter, 3002 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2914 SdHoareTripleChecker+Valid, 8460 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:20:08,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2914 Valid, 8460 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1568 Invalid, 1 Unknown, 0 Unchecked, 10.3s Time] [2022-11-22 00:20:08,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27712 states. [2022-11-22 00:20:10,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27712 to 27699. [2022-11-22 00:20:10,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27699 states, 16595 states have (on average 1.2741187104549563) internal successors, (21144), 17118 states have internal predecessors, (21144), 9015 states have call successors, (9015), 2092 states have call predecessors, (9015), 2087 states have return successors, (9012), 8770 states have call predecessors, (9012), 9012 states have call successors, (9012) [2022-11-22 00:20:10,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27699 states to 27699 states and 39171 transitions. [2022-11-22 00:20:10,906 INFO L78 Accepts]: Start accepts. Automaton has 27699 states and 39171 transitions. Word has length 297 [2022-11-22 00:20:10,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:20:10,907 INFO L495 AbstractCegarLoop]: Abstraction has 27699 states and 39171 transitions. [2022-11-22 00:20:10,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-22 00:20:10,908 INFO L276 IsEmpty]: Start isEmpty. Operand 27699 states and 39171 transitions. [2022-11-22 00:20:10,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-11-22 00:20:10,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:20:10,956 INFO L195 NwaCegarLoop]: trace histogram [26, 21, 21, 21, 21, 21, 21, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:20:10,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:20:10,957 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:20:10,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:20:10,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1395540328, now seen corresponding path program 1 times [2022-11-22 00:20:10,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:20:10,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180618109] [2022-11-22 00:20:10,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:20:10,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:20:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:20:11,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1971 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1964 trivial. 0 not checked. [2022-11-22 00:20:11,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:20:11,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180618109] [2022-11-22 00:20:11,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180618109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:20:11,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:20:11,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:20:11,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371925842] [2022-11-22 00:20:11,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:20:11,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:20:11,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:20:11,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:20:11,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:20:11,882 INFO L87 Difference]: Start difference. First operand 27699 states and 39171 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-22 00:20:19,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:20:24,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:20:24,181 INFO L93 Difference]: Finished difference Result 65989 states and 93353 transitions. [2022-11-22 00:20:24,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:20:24,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 322 [2022-11-22 00:20:24,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:20:24,424 INFO L225 Difference]: With dead ends: 65989 [2022-11-22 00:20:24,424 INFO L226 Difference]: Without dead ends: 40302 [2022-11-22 00:20:24,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:20:24,554 INFO L413 NwaCegarLoop]: 5806 mSDtfsCounter, 3225 mSDsluCounter, 3024 mSDsCounter, 0 mSdLazyCounter, 1602 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3225 SdHoareTripleChecker+Valid, 8830 SdHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1602 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:20:24,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3225 Valid, 8830 Invalid, 1612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1602 Invalid, 1 Unknown, 0 Unchecked, 10.7s Time] [2022-11-22 00:20:24,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40302 states. [2022-11-22 00:20:27,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40302 to 40280. [2022-11-22 00:20:27,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40280 states, 24127 states have (on average 1.2735524516102292) internal successors, (30727), 24899 states have internal predecessors, (30727), 13107 states have call successors, (13107), 3051 states have call predecessors, (13107), 3044 states have return successors, (13104), 12741 states have call predecessors, (13104), 13104 states have call successors, (13104) [2022-11-22 00:20:27,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40280 states to 40280 states and 56938 transitions. [2022-11-22 00:20:27,619 INFO L78 Accepts]: Start accepts. Automaton has 40280 states and 56938 transitions. Word has length 322 [2022-11-22 00:20:27,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:20:27,622 INFO L495 AbstractCegarLoop]: Abstraction has 40280 states and 56938 transitions. [2022-11-22 00:20:27,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-22 00:20:27,622 INFO L276 IsEmpty]: Start isEmpty. Operand 40280 states and 56938 transitions. [2022-11-22 00:20:27,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-22 00:20:27,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:20:27,709 INFO L195 NwaCegarLoop]: trace histogram [28, 21, 21, 21, 21, 21, 21, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:20:27,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 00:20:27,710 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:20:27,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:20:27,710 INFO L85 PathProgramCache]: Analyzing trace with hash -69094491, now seen corresponding path program 1 times [2022-11-22 00:20:27,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:20:27,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217639929] [2022-11-22 00:20:27,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:20:27,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:20:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:20:29,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2100 trivial. 0 not checked. [2022-11-22 00:20:29,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:20:29,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217639929] [2022-11-22 00:20:29,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217639929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:20:29,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:20:29,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:20:29,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472152763] [2022-11-22 00:20:29,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:20:29,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:20:29,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:20:29,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:20:29,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:20:29,697 INFO L87 Difference]: Start difference. First operand 40280 states and 56938 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-22 00:20:35,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:20:38,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:20:44,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:20:44,379 INFO L93 Difference]: Finished difference Result 40303 states and 56962 transitions. [2022-11-22 00:20:44,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:20:44,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 346 [2022-11-22 00:20:44,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:20:44,754 INFO L225 Difference]: With dead ends: 40303 [2022-11-22 00:20:44,755 INFO L226 Difference]: Without dead ends: 40301 [2022-11-22 00:20:44,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:20:44,781 INFO L413 NwaCegarLoop]: 3818 mSDtfsCounter, 3269 mSDsluCounter, 6805 mSDsCounter, 0 mSdLazyCounter, 1642 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3269 SdHoareTripleChecker+Valid, 10623 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1642 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:20:44,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3269 Valid, 10623 Invalid, 1644 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1642 Invalid, 1 Unknown, 0 Unchecked, 13.3s Time] [2022-11-22 00:20:44,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40301 states. [2022-11-22 00:20:47,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40301 to 40280. [2022-11-22 00:20:47,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40280 states, 24127 states have (on average 1.273345214904464) internal successors, (30722), 24899 states have internal predecessors, (30722), 13107 states have call successors, (13107), 3051 states have call predecessors, (13107), 3044 states have return successors, (13104), 12741 states have call predecessors, (13104), 13104 states have call successors, (13104) [2022-11-22 00:20:47,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40280 states to 40280 states and 56933 transitions. [2022-11-22 00:20:47,414 INFO L78 Accepts]: Start accepts. Automaton has 40280 states and 56933 transitions. Word has length 346 [2022-11-22 00:20:47,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:20:47,415 INFO L495 AbstractCegarLoop]: Abstraction has 40280 states and 56933 transitions. [2022-11-22 00:20:47,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-22 00:20:47,416 INFO L276 IsEmpty]: Start isEmpty. Operand 40280 states and 56933 transitions. [2022-11-22 00:20:47,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2022-11-22 00:20:47,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:20:47,599 INFO L195 NwaCegarLoop]: trace histogram [32, 24, 24, 24, 24, 24, 24, 19, 17, 12, 12, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:20:47,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 00:20:47,599 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:20:47,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:20:47,600 INFO L85 PathProgramCache]: Analyzing trace with hash -132798604, now seen corresponding path program 1 times [2022-11-22 00:20:47,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:20:47,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226078076] [2022-11-22 00:20:47,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:20:47,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:20:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:20:50,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3933 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3933 trivial. 0 not checked. [2022-11-22 00:20:50,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:20:50,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226078076] [2022-11-22 00:20:50,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226078076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:20:50,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:20:50,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:20:50,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387630364] [2022-11-22 00:20:50,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:20:50,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:20:50,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:20:50,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:20:50,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:20:50,933 INFO L87 Difference]: Start difference. First operand 40280 states and 56933 transitions. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 2 states have call successors, (99), 2 states have call predecessors, (99), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2022-11-22 00:21:01,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:21:09,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:21:09,188 INFO L93 Difference]: Finished difference Result 119858 states and 176940 transitions. [2022-11-22 00:21:09,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:21:09,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 2 states have call successors, (99), 2 states have call predecessors, (99), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) Word has length 816 [2022-11-22 00:21:09,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:21:09,779 INFO L225 Difference]: With dead ends: 119858 [2022-11-22 00:21:09,779 INFO L226 Difference]: Without dead ends: 81590 [2022-11-22 00:21:09,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:21:09,968 INFO L413 NwaCegarLoop]: 5791 mSDtfsCounter, 2287 mSDsluCounter, 9142 mSDsCounter, 0 mSdLazyCounter, 2488 mSolverCounterSat, 634 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2933 SdHoareTripleChecker+Valid, 14933 SdHoareTripleChecker+Invalid, 3123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 2488 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:21:09,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2933 Valid, 14933 Invalid, 3123 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [634 Valid, 2488 Invalid, 1 Unknown, 0 Unchecked, 14.3s Time] [2022-11-22 00:21:10,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81590 states. [2022-11-22 00:21:13,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81590 to 40292. [2022-11-22 00:21:13,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40292 states, 24139 states have (on average 1.2732093293011308) internal successors, (30734), 24911 states have internal predecessors, (30734), 13107 states have call successors, (13107), 3051 states have call predecessors, (13107), 3044 states have return successors, (13104), 12741 states have call predecessors, (13104), 13104 states have call successors, (13104) [2022-11-22 00:21:13,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40292 states to 40292 states and 56945 transitions. [2022-11-22 00:21:13,907 INFO L78 Accepts]: Start accepts. Automaton has 40292 states and 56945 transitions. Word has length 816 [2022-11-22 00:21:13,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:21:13,908 INFO L495 AbstractCegarLoop]: Abstraction has 40292 states and 56945 transitions. [2022-11-22 00:21:13,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 2 states have call successors, (99), 2 states have call predecessors, (99), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2022-11-22 00:21:13,908 INFO L276 IsEmpty]: Start isEmpty. Operand 40292 states and 56945 transitions. [2022-11-22 00:21:14,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2022-11-22 00:21:14,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:21:14,073 INFO L195 NwaCegarLoop]: trace histogram [33, 25, 25, 25, 25, 25, 25, 20, 18, 12, 12, 10, 9, 9, 9, 9, 9, 9, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:21:14,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 00:21:14,073 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:21:14,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:21:14,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1897823181, now seen corresponding path program 1 times [2022-11-22 00:21:14,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:21:14,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471848733] [2022-11-22 00:21:14,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:21:14,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:21:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:21:16,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4259 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4259 trivial. 0 not checked. [2022-11-22 00:21:16,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:21:16,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471848733] [2022-11-22 00:21:16,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471848733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:21:16,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:21:16,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:21:16,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424446831] [2022-11-22 00:21:16,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:21:16,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:21:16,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:21:16,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:21:16,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:21:16,498 INFO L87 Difference]: Start difference. First operand 40292 states and 56945 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2022-11-22 00:21:24,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:21:26,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:21:28,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:21:34,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:21:34,592 INFO L93 Difference]: Finished difference Result 106514 states and 155622 transitions. [2022-11-22 00:21:34,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:21:34,593 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) Word has length 888 [2022-11-22 00:21:34,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:21:34,916 INFO L225 Difference]: With dead ends: 106514 [2022-11-22 00:21:34,916 INFO L226 Difference]: Without dead ends: 68234 [2022-11-22 00:21:35,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:21:35,052 INFO L413 NwaCegarLoop]: 4633 mSDtfsCounter, 2373 mSDsluCounter, 7683 mSDsCounter, 0 mSdLazyCounter, 2060 mSolverCounterSat, 664 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2705 SdHoareTripleChecker+Valid, 12316 SdHoareTripleChecker+Invalid, 2725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 2060 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:21:35,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2705 Valid, 12316 Invalid, 2725 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [664 Valid, 2060 Invalid, 1 Unknown, 0 Unchecked, 13.7s Time] [2022-11-22 00:21:35,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68234 states. [2022-11-22 00:21:38,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68234 to 40304. [2022-11-22 00:21:38,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40304 states, 24151 states have (on average 1.2730735787338) internal successors, (30746), 24923 states have internal predecessors, (30746), 13107 states have call successors, (13107), 3051 states have call predecessors, (13107), 3044 states have return successors, (13104), 12741 states have call predecessors, (13104), 13104 states have call successors, (13104) [2022-11-22 00:21:38,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40304 states to 40304 states and 56957 transitions. [2022-11-22 00:21:38,419 INFO L78 Accepts]: Start accepts. Automaton has 40304 states and 56957 transitions. Word has length 888 [2022-11-22 00:21:38,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:21:38,421 INFO L495 AbstractCegarLoop]: Abstraction has 40304 states and 56957 transitions. [2022-11-22 00:21:38,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2022-11-22 00:21:38,421 INFO L276 IsEmpty]: Start isEmpty. Operand 40304 states and 56957 transitions. [2022-11-22 00:21:38,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2022-11-22 00:21:38,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:21:38,755 INFO L195 NwaCegarLoop]: trace histogram [34, 26, 26, 26, 26, 26, 26, 20, 18, 12, 12, 10, 9, 9, 9, 9, 9, 9, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:21:38,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 00:21:38,756 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:21:38,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:21:38,757 INFO L85 PathProgramCache]: Analyzing trace with hash 894026199, now seen corresponding path program 1 times [2022-11-22 00:21:38,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:21:38,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909458392] [2022-11-22 00:21:38,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:21:38,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:21:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:21:41,083 INFO L134 CoverageAnalysis]: Checked inductivity of 4479 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4479 trivial. 0 not checked. [2022-11-22 00:21:41,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:21:41,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909458392] [2022-11-22 00:21:41,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909458392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:21:41,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:21:41,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:21:41,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855408198] [2022-11-22 00:21:41,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:21:41,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:21:41,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:21:41,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:21:41,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:21:41,088 INFO L87 Difference]: Start difference. First operand 40304 states and 56957 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2022-11-22 00:21:50,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:22:02,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:22:02,865 INFO L93 Difference]: Finished difference Result 120116 states and 177312 transitions. [2022-11-22 00:22:02,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:22:02,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) Word has length 902 [2022-11-22 00:22:02,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:22:03,358 INFO L225 Difference]: With dead ends: 120116 [2022-11-22 00:22:03,358 INFO L226 Difference]: Without dead ends: 81824 [2022-11-22 00:22:03,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:22:03,511 INFO L413 NwaCegarLoop]: 5834 mSDtfsCounter, 2307 mSDsluCounter, 9194 mSDsCounter, 0 mSdLazyCounter, 2499 mSolverCounterSat, 635 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2967 SdHoareTripleChecker+Valid, 15028 SdHoareTripleChecker+Invalid, 3135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 2499 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:22:03,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2967 Valid, 15028 Invalid, 3135 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [635 Valid, 2499 Invalid, 1 Unknown, 0 Unchecked, 15.0s Time] [2022-11-22 00:22:03,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81824 states. [2022-11-22 00:22:07,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81824 to 40316. [2022-11-22 00:22:07,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40316 states, 24163 states have (on average 1.272937963001283) internal successors, (30758), 24935 states have internal predecessors, (30758), 13107 states have call successors, (13107), 3051 states have call predecessors, (13107), 3044 states have return successors, (13104), 12741 states have call predecessors, (13104), 13104 states have call successors, (13104) [2022-11-22 00:22:08,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40316 states to 40316 states and 56969 transitions. [2022-11-22 00:22:08,085 INFO L78 Accepts]: Start accepts. Automaton has 40316 states and 56969 transitions. Word has length 902 [2022-11-22 00:22:08,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:22:08,087 INFO L495 AbstractCegarLoop]: Abstraction has 40316 states and 56969 transitions. [2022-11-22 00:22:08,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2022-11-22 00:22:08,088 INFO L276 IsEmpty]: Start isEmpty. Operand 40316 states and 56969 transitions. [2022-11-22 00:22:08,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 904 [2022-11-22 00:22:08,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:22:08,240 INFO L195 NwaCegarLoop]: trace histogram [34, 26, 26, 26, 26, 26, 26, 20, 18, 12, 12, 10, 9, 9, 9, 9, 9, 9, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:22:08,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 00:22:08,240 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:22:08,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:22:08,241 INFO L85 PathProgramCache]: Analyzing trace with hash -57192302, now seen corresponding path program 1 times [2022-11-22 00:22:08,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:22:08,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957640745] [2022-11-22 00:22:08,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:08,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:22:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:22:10,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4479 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4479 trivial. 0 not checked. [2022-11-22 00:22:10,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:22:10,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957640745] [2022-11-22 00:22:10,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957640745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:22:10,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:22:10,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:22:10,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432188882] [2022-11-22 00:22:10,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:22:10,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:22:10,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:22:10,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:22:10,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:22:10,880 INFO L87 Difference]: Start difference. First operand 40316 states and 56969 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2022-11-22 00:22:18,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:22:22,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:22:33,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:22:33,070 INFO L93 Difference]: Finished difference Result 87603 states and 128913 transitions. [2022-11-22 00:22:33,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:22:33,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) Word has length 903 [2022-11-22 00:22:33,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:22:33,358 INFO L225 Difference]: With dead ends: 87603 [2022-11-22 00:22:33,358 INFO L226 Difference]: Without dead ends: 68318 [2022-11-22 00:22:33,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:22:33,440 INFO L413 NwaCegarLoop]: 4690 mSDtfsCounter, 2331 mSDsluCounter, 7738 mSDsCounter, 0 mSdLazyCounter, 2114 mSolverCounterSat, 634 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2684 SdHoareTripleChecker+Valid, 12428 SdHoareTripleChecker+Invalid, 2749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 2114 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:22:33,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2684 Valid, 12428 Invalid, 2749 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [634 Valid, 2114 Invalid, 1 Unknown, 0 Unchecked, 15.1s Time] [2022-11-22 00:22:33,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68318 states. [2022-11-22 00:22:37,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68318 to 40328. [2022-11-22 00:22:37,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40328 states, 24175 states have (on average 1.272802481902792) internal successors, (30770), 24947 states have internal predecessors, (30770), 13107 states have call successors, (13107), 3051 states have call predecessors, (13107), 3044 states have return successors, (13104), 12741 states have call predecessors, (13104), 13104 states have call successors, (13104) [2022-11-22 00:22:37,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40328 states to 40328 states and 56981 transitions. [2022-11-22 00:22:37,659 INFO L78 Accepts]: Start accepts. Automaton has 40328 states and 56981 transitions. Word has length 903 [2022-11-22 00:22:37,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:22:37,660 INFO L495 AbstractCegarLoop]: Abstraction has 40328 states and 56981 transitions. [2022-11-22 00:22:37,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2022-11-22 00:22:37,661 INFO L276 IsEmpty]: Start isEmpty. Operand 40328 states and 56981 transitions. [2022-11-22 00:22:37,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2022-11-22 00:22:37,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:22:37,789 INFO L195 NwaCegarLoop]: trace histogram [34, 26, 26, 26, 26, 26, 26, 20, 20, 12, 12, 11, 9, 9, 9, 9, 9, 9, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:22:37,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 00:22:37,789 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:22:37,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:22:37,790 INFO L85 PathProgramCache]: Analyzing trace with hash -138988204, now seen corresponding path program 1 times [2022-11-22 00:22:37,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:22:37,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643457600] [2022-11-22 00:22:37,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:37,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:22:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:22:43,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4589 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4589 trivial. 0 not checked. [2022-11-22 00:22:43,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:22:43,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643457600] [2022-11-22 00:22:43,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643457600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:22:43,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:22:43,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:22:43,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9644769] [2022-11-22 00:22:43,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:22:43,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:22:43,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:22:43,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:22:43,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:22:43,339 INFO L87 Difference]: Start difference. First operand 40328 states and 56981 transitions. Second operand has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) [2022-11-22 00:22:49,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:22:55,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:22:55,413 INFO L93 Difference]: Finished difference Result 40348 states and 57003 transitions. [2022-11-22 00:22:55,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:22:55,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) Word has length 925 [2022-11-22 00:22:55,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:22:55,562 INFO L225 Difference]: With dead ends: 40348 [2022-11-22 00:22:55,562 INFO L226 Difference]: Without dead ends: 40346 [2022-11-22 00:22:55,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:22:55,578 INFO L413 NwaCegarLoop]: 3049 mSDtfsCounter, 3382 mSDsluCounter, 3047 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3382 SdHoareTripleChecker+Valid, 6096 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:22:55,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3382 Valid, 6096 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1096 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2022-11-22 00:22:55,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40346 states. [2022-11-22 00:22:59,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40346 to 40326. [2022-11-22 00:22:59,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40326 states, 24174 states have (on average 1.272606933068586) internal successors, (30764), 24945 states have internal predecessors, (30764), 13107 states have call successors, (13107), 3051 states have call predecessors, (13107), 3044 states have return successors, (13104), 12741 states have call predecessors, (13104), 13104 states have call successors, (13104)