./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f7b0b6-3056-431c-a2e8-fe8256472b7c/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f7b0b6-3056-431c-a2e8-fe8256472b7c/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f7b0b6-3056-431c-a2e8-fe8256472b7c/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f7b0b6-3056-431c-a2e8-fe8256472b7c/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f7b0b6-3056-431c-a2e8-fe8256472b7c/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f7b0b6-3056-431c-a2e8-fe8256472b7c/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 992a1e8d90338cdabe7a076eea5104d9629c0e7f956adc14aa39d01d99d3f218 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:37:40,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:37:40,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:37:40,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:37:40,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:37:40,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:37:40,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:37:40,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:37:40,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:37:40,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:37:40,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:37:40,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:37:40,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:37:40,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:37:40,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:37:40,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:37:40,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:37:40,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:37:40,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:37:40,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:37:40,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:37:40,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:37:40,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:37:40,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:37:40,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:37:40,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:37:40,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:37:40,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:37:40,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:37:40,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:37:40,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:37:40,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:37:40,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:37:40,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:37:40,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:37:40,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:37:40,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:37:40,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:37:40,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:37:40,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:37:40,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:37:40,445 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f7b0b6-3056-431c-a2e8-fe8256472b7c/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:37:40,508 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:37:40,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:37:40,509 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:37:40,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:37:40,510 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:37:40,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:37:40,510 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:37:40,511 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:37:40,511 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:37:40,511 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:37:40,512 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:37:40,512 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:37:40,512 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:37:40,512 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:37:40,519 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:37:40,520 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:37:40,520 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:37:40,520 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:37:40,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:37:40,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:37:40,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:37:40,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:37:40,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:37:40,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:37:40,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:37:40,523 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:37:40,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:37:40,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:37:40,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:37:40,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:37:40,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:37:40,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:37:40,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:37:40,527 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:37:40,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:37:40,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:37:40,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:37:40,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:37:40,529 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f7b0b6-3056-431c-a2e8-fe8256472b7c/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f7b0b6-3056-431c-a2e8-fe8256472b7c/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 992a1e8d90338cdabe7a076eea5104d9629c0e7f956adc14aa39d01d99d3f218 [2021-11-25 18:37:40,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:37:40,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:37:40,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:37:40,903 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:37:40,904 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:37:40,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f7b0b6-3056-431c-a2e8-fe8256472b7c/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-25 18:37:40,985 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f7b0b6-3056-431c-a2e8-fe8256472b7c/bin/utaipan-eEHZpOm5b7/data/f897959b0/9c913c3f63e64786af0693c85e77e8b0/FLAG45dff5cf2 [2021-11-25 18:37:42,209 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:37:42,210 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f7b0b6-3056-431c-a2e8-fe8256472b7c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-25 18:37:42,301 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f7b0b6-3056-431c-a2e8-fe8256472b7c/bin/utaipan-eEHZpOm5b7/data/f897959b0/9c913c3f63e64786af0693c85e77e8b0/FLAG45dff5cf2 [2021-11-25 18:37:42,378 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f7b0b6-3056-431c-a2e8-fe8256472b7c/bin/utaipan-eEHZpOm5b7/data/f897959b0/9c913c3f63e64786af0693c85e77e8b0 [2021-11-25 18:37:42,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:37:42,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:37:42,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:37:42,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:37:42,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:37:42,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:37:42" (1/1) ... [2021-11-25 18:37:42,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b38d740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:42, skipping insertion in model container [2021-11-25 18:37:42,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:37:42" (1/1) ... [2021-11-25 18:37:42,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:37:42,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:37:48,398 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f7b0b6-3056-431c-a2e8-fe8256472b7c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[492962,492975] [2021-11-25 18:37:48,409 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f7b0b6-3056-431c-a2e8-fe8256472b7c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[493107,493120] [2021-11-25 18:37:48,457 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:37:48,539 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:37:49,183 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f7b0b6-3056-431c-a2e8-fe8256472b7c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[492962,492975] [2021-11-25 18:37:49,184 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f7b0b6-3056-431c-a2e8-fe8256472b7c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[493107,493120] [2021-11-25 18:37:49,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:37:49,460 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:37:49,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:49 WrapperNode [2021-11-25 18:37:49,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:37:49,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:37:49,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:37:49,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:37:49,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:49" (1/1) ... [2021-11-25 18:37:49,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:49" (1/1) ... [2021-11-25 18:37:50,205 INFO L137 Inliner]: procedures = 567, calls = 5407, calls flagged for inlining = 289, calls inlined = 263, statements flattened = 11461 [2021-11-25 18:37:50,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:37:50,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:37:50,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:37:50,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:37:50,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:49" (1/1) ... [2021-11-25 18:37:50,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:49" (1/1) ... [2021-11-25 18:37:50,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:49" (1/1) ... [2021-11-25 18:37:50,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:49" (1/1) ... [2021-11-25 18:37:50,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:49" (1/1) ... [2021-11-25 18:37:50,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:49" (1/1) ... [2021-11-25 18:37:50,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:49" (1/1) ... [2021-11-25 18:37:50,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:37:50,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:37:50,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:37:50,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:37:50,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:49" (1/1) ... [2021-11-25 18:37:50,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:37:50,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f7b0b6-3056-431c-a2e8-fe8256472b7c/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:37:50,951 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f7b0b6-3056-431c-a2e8-fe8256472b7c/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:37:50,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f7b0b6-3056-431c-a2e8-fe8256472b7c/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:37:51,011 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_up [2021-11-25 18:37:51,012 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_up [2021-11-25 18:37:51,012 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_media_task [2021-11-25 18:37:51,012 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_media_task [2021-11-25 18:37:51,012 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 18:37:51,013 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 18:37:51,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:37:51,014 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:37:51,015 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-25 18:37:51,015 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-25 18:37:51,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_84 [2021-11-25 18:37:51,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_84 [2021-11-25 18:37:51,016 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 18:37:51,016 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 18:37:51,016 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_select_media [2021-11-25 18:37:51,016 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_select_media [2021-11-25 18:37:51,016 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit_le [2021-11-25 18:37:51,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit_le [2021-11-25 18:37:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:37:51,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:37:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 18:37:51,017 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 18:37:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 18:37:51,018 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 18:37:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-25 18:37:51,018 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-25 18:37:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 18:37:51,019 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 18:37:51,019 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-25 18:37:51,019 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-25 18:37:51,020 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-25 18:37:51,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-25 18:37:51,020 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 18:37:51,020 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 18:37:51,020 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2021-11-25 18:37:51,021 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2021-11-25 18:37:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 18:37:51,021 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 18:37:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 18:37:51,022 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 18:37:51,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 18:37:51,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 18:37:51,022 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_do_nway [2021-11-25 18:37:51,023 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_do_nway [2021-11-25 18:37:51,023 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 18:37:51,023 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 18:37:51,024 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-25 18:37:51,024 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-25 18:37:51,025 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 18:37:51,026 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 18:37:51,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 18:37:51,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 18:37:51,026 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 18:37:51,027 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 18:37:51,027 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 18:37:51,027 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 18:37:51,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:37:51,027 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_wolopts [2021-11-25 18:37:51,028 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_wolopts [2021-11-25 18:37:51,028 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_resume [2021-11-25 18:37:51,028 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_resume [2021-11-25 18:37:51,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-25 18:37:51,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-25 18:37:51,029 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_interrupt [2021-11-25 18:37:51,030 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_interrupt [2021-11-25 18:37:51,030 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 18:37:51,030 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 18:37:51,030 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___3 [2021-11-25 18:37:51,030 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___3 [2021-11-25 18:37:51,031 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___1 [2021-11-25 18:37:51,031 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___1 [2021-11-25 18:37:51,031 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_media_task [2021-11-25 18:37:51,031 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_media_task [2021-11-25 18:37:51,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 18:37:51,032 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___5 [2021-11-25 18:37:51,032 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___5 [2021-11-25 18:37:51,032 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___4 [2021-11-25 18:37:51,033 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___4 [2021-11-25 18:37:51,033 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 18:37:51,033 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 18:37:51,034 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 18:37:51,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 18:37:51,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:37:51,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 18:37:51,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 18:37:51,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:37:51,036 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-25 18:37:51,037 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-25 18:37:51,037 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 18:37:51,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 18:37:51,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-25 18:37:51,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-25 18:37:51,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 18:37:51,039 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 18:37:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 18:37:51,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 18:37:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 18:37:51,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 18:37:51,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 18:37:51,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 18:37:51,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-25 18:37:51,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-25 18:37:51,040 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_timer [2021-11-25 18:37:51,041 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_timer [2021-11-25 18:37:51,041 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-25 18:37:51,041 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-25 18:37:51,041 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 18:37:51,042 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 18:37:51,042 INFO L130 BoogieDeclarations]: Found specification of procedure poll_tulip [2021-11-25 18:37:51,043 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_tulip [2021-11-25 18:37:51,046 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_write [2021-11-25 18:37:51,046 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_write [2021-11-25 18:37:51,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:37:51,047 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 18:37:51,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 18:37:51,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 18:37:51,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 18:37:51,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-25 18:37:51,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-25 18:37:51,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-25 18:37:51,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-25 18:37:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:37:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 18:37:51,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 18:37:51,058 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 18:37:51,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 18:37:51,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:37:51,058 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_start_nway [2021-11-25 18:37:51,058 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_start_nway [2021-11-25 18:37:51,059 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-25 18:37:51,059 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-25 18:37:51,059 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-25 18:37:51,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-25 18:37:51,059 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:37:51,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:37:51,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-25 18:37:51,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-25 18:37:51,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-25 18:37:51,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-25 18:37:51,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_tulip_private [2021-11-25 18:37:51,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_tulip_private [2021-11-25 18:37:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-25 18:37:51,061 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-25 18:37:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-25 18:37:51,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-25 18:37:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 18:37:51,062 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 18:37:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 18:37:51,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 18:37:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mii_lock_of_tulip_private [2021-11-25 18:37:51,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mii_lock_of_tulip_private [2021-11-25 18:37:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 18:37:51,063 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 18:37:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_tulip_private [2021-11-25 18:37:51,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_tulip_private [2021-11-25 18:37:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:37:51,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:37:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_close [2021-11-25 18:37:51,064 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_close [2021-11-25 18:37:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:37:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:37:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:37:51,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:37:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2021-11-25 18:37:51,065 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2021-11-25 18:37:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-25 18:37:51,065 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-25 18:37:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_power_state [2021-11-25 18:37:51,066 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_power_state [2021-11-25 18:37:51,066 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 18:37:51,066 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 18:37:51,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2021-11-25 18:37:51,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2021-11-25 18:37:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2021-11-25 18:37:51,067 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2021-11-25 18:37:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 18:37:51,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 18:37:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_tx_timeout [2021-11-25 18:37:51,067 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_tx_timeout [2021-11-25 18:37:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_check_duplex [2021-11-25 18:37:51,068 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_check_duplex [2021-11-25 18:37:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 18:37:51,068 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 18:37:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure bitrev32 [2021-11-25 18:37:51,068 INFO L138 BoogieDeclarations]: Found implementation of procedure bitrev32 [2021-11-25 18:37:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2021-11-25 18:37:51,069 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2021-11-25 18:37:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:37:51,069 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:37:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 18:37:51,070 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 18:37:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure comet_timer [2021-11-25 18:37:51,070 INFO L138 BoogieDeclarations]: Found implementation of procedure comet_timer [2021-11-25 18:37:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2021-11-25 18:37:51,070 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2021-11-25 18:37:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 18:37:51,071 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 18:37:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:37:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_read [2021-11-25 18:37:51,071 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_read [2021-11-25 18:37:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 18:37:51,072 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 18:37:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:37:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-25 18:37:51,072 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-25 18:37:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-25 18:37:51,072 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-25 18:37:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2021-11-25 18:37:51,073 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2021-11-25 18:37:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:37:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_down [2021-11-25 18:37:51,073 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_down [2021-11-25 18:37:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_stop_rxtx___2 [2021-11-25 18:37:51,074 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_stop_rxtx___2 [2021-11-25 18:37:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_remove_one [2021-11-25 18:37:51,074 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_remove_one [2021-11-25 18:37:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 18:37:51,074 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 18:37:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-25 18:37:51,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-25 18:37:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure mxic_timer [2021-11-25 18:37:51,075 INFO L138 BoogieDeclarations]: Found implementation of procedure mxic_timer [2021-11-25 18:37:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 18:37:51,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 18:37:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 18:37:51,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 18:37:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_free_ring [2021-11-25 18:37:51,076 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_free_ring [2021-11-25 18:37:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-25 18:37:51,077 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-25 18:37:51,077 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_refill_rx [2021-11-25 18:37:51,077 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_refill_rx [2021-11-25 18:37:51,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_84___0 [2021-11-25 18:37:51,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_84___0 [2021-11-25 18:37:51,078 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_timer [2021-11-25 18:37:51,078 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_timer [2021-11-25 18:37:51,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_84 [2021-11-25 18:37:51,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_84 [2021-11-25 18:37:51,084 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 18:37:51,084 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 18:37:51,084 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 18:37:51,084 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 18:37:51,084 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-25 18:37:51,085 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-25 18:37:51,085 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 18:37:51,085 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 18:37:51,086 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 18:37:51,088 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 18:37:51,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:37:51,088 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx [2021-11-25 18:37:51,089 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx [2021-11-25 18:37:51,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 18:37:51,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 18:37:51,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_85 [2021-11-25 18:37:51,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_85 [2021-11-25 18:37:51,089 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2021-11-25 18:37:51,090 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2021-11-25 18:37:51,090 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_start_rxtx [2021-11-25 18:37:51,090 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_start_rxtx [2021-11-25 18:37:51,090 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 18:37:51,090 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 18:37:51,091 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_open [2021-11-25 18:37:51,091 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_open [2021-11-25 18:37:51,091 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-25 18:37:51,091 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-25 18:37:51,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 18:37:51,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 18:37:51,092 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-25 18:37:51,092 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-25 18:37:51,092 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-25 18:37:51,092 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-25 18:37:51,092 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-25 18:37:51,092 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-25 18:37:51,093 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_start_nway [2021-11-25 18:37:51,093 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_start_nway [2021-11-25 18:37:51,093 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-25 18:37:51,093 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-25 18:37:51,093 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_read_eeprom [2021-11-25 18:37:51,093 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_read_eeprom [2021-11-25 18:37:51,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:37:51,094 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_timer [2021-11-25 18:37:51,094 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_timer [2021-11-25 18:37:51,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 18:37:51,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 18:37:52,727 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:37:52,733 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:37:54,101 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:38:03,823 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 18:38:03,997 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:38:08,131 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:38:08,131 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 18:38:08,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:38:08 BoogieIcfgContainer [2021-11-25 18:38:08,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:38:08,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:38:08,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:38:08,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:38:08,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:37:42" (1/3) ... [2021-11-25 18:38:08,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370e2d46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:38:08, skipping insertion in model container [2021-11-25 18:38:08,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:49" (2/3) ... [2021-11-25 18:38:08,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370e2d46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:38:08, skipping insertion in model container [2021-11-25 18:38:08,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:38:08" (3/3) ... [2021-11-25 18:38:08,152 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-25 18:38:08,158 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:38:08,158 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:38:08,238 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:38:08,247 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:38:08,247 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:38:08,349 INFO L276 IsEmpty]: Start isEmpty. Operand has 2631 states, 1543 states have (on average 1.3512637718729748) internal successors, (2085), 1642 states have internal predecessors, (2085), 955 states have call successors, (955), 134 states have call predecessors, (955), 133 states have return successors, (948), 903 states have call predecessors, (948), 948 states have call successors, (948) [2021-11-25 18:38:08,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-25 18:38:08,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:38:08,396 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 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] [2021-11-25 18:38:08,397 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:38:08,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:38:08,404 INFO L85 PathProgramCache]: Analyzing trace with hash -882329180, now seen corresponding path program 1 times [2021-11-25 18:38:08,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:38:08,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380741795] [2021-11-25 18:38:08,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:38:08,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:38:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:38:09,697 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2021-11-25 18:38:09,698 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:38:09,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380741795] [2021-11-25 18:38:09,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380741795] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:38:09,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:38:09,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:38:09,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421225010] [2021-11-25 18:38:09,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:38:09,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:38:09,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:38:09,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:38:09,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:38:09,753 INFO L87 Difference]: Start difference. First operand has 2631 states, 1543 states have (on average 1.3512637718729748) internal successors, (2085), 1642 states have internal predecessors, (2085), 955 states have call successors, (955), 134 states have call predecessors, (955), 133 states have return successors, (948), 903 states have call predecessors, (948), 948 states have call successors, (948) Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:38:15,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:38:17,668 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:38:18,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:38:18,384 INFO L93 Difference]: Finished difference Result 6981 states and 10636 transitions. [2021-11-25 18:38:18,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:38:18,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 170 [2021-11-25 18:38:18,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:38:18,457 INFO L225 Difference]: With dead ends: 6981 [2021-11-25 18:38:18,458 INFO L226 Difference]: Without dead ends: 4317 [2021-11-25 18:38:18,487 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:38:18,491 INFO L933 BasicCegarLoop]: 4151 mSDtfsCounter, 2651 mSDsluCounter, 3918 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2651 SdHoareTripleChecker+Valid, 7645 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:38:18,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2651 Valid, 7645 Invalid, 941 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 923 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2021-11-25 18:38:18,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4317 states. [2021-11-25 18:38:19,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4317 to 4314. [2021-11-25 18:38:19,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4314 states, 2572 states have (on average 1.3483670295489891) internal successors, (3468), 2726 states have internal predecessors, (3468), 1520 states have call successors, (1520), 221 states have call predecessors, (1520), 221 states have return successors, (1520), 1449 states have call predecessors, (1520), 1520 states have call successors, (1520) [2021-11-25 18:38:19,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4314 states to 4314 states and 6508 transitions. [2021-11-25 18:38:19,402 INFO L78 Accepts]: Start accepts. Automaton has 4314 states and 6508 transitions. Word has length 170 [2021-11-25 18:38:19,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:38:19,408 INFO L470 AbstractCegarLoop]: Abstraction has 4314 states and 6508 transitions. [2021-11-25 18:38:19,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:38:19,410 INFO L276 IsEmpty]: Start isEmpty. Operand 4314 states and 6508 transitions. [2021-11-25 18:38:19,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-25 18:38:19,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:38:19,450 INFO L514 BasicCegarLoop]: trace histogram [15, 13, 13, 13, 13, 13, 13, 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] [2021-11-25 18:38:19,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:38:19,451 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:38:19,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:38:19,457 INFO L85 PathProgramCache]: Analyzing trace with hash 329585210, now seen corresponding path program 1 times [2021-11-25 18:38:19,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:38:19,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877838976] [2021-11-25 18:38:19,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:38:19,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:38:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:38:20,029 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2021-11-25 18:38:20,030 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:38:20,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877838976] [2021-11-25 18:38:20,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877838976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:38:20,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:38:20,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:38:20,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940375340] [2021-11-25 18:38:20,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:38:20,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:38:20,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:38:20,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:38:20,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:38:20,040 INFO L87 Difference]: Start difference. First operand 4314 states and 6508 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-25 18:38:27,285 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:38:28,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:38:28,037 INFO L93 Difference]: Finished difference Result 12700 states and 19141 transitions. [2021-11-25 18:38:28,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:38:28,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 215 [2021-11-25 18:38:28,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:38:28,140 INFO L225 Difference]: With dead ends: 12700 [2021-11-25 18:38:28,140 INFO L226 Difference]: Without dead ends: 8413 [2021-11-25 18:38:28,177 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:38:28,179 INFO L933 BasicCegarLoop]: 4339 mSDtfsCounter, 3564 mSDsluCounter, 3889 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3564 SdHoareTripleChecker+Valid, 7797 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:38:28,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3564 Valid, 7797 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 894 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2021-11-25 18:38:28,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8413 states. [2021-11-25 18:38:29,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8413 to 8396. [2021-11-25 18:38:29,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8396 states, 4999 states have (on average 1.344868973794759) internal successors, (6723), 5301 states have internal predecessors, (6723), 2958 states have call successors, (2958), 438 states have call predecessors, (2958), 438 states have return successors, (2958), 2817 states have call predecessors, (2958), 2958 states have call successors, (2958) [2021-11-25 18:38:29,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8396 states to 8396 states and 12639 transitions. [2021-11-25 18:38:29,167 INFO L78 Accepts]: Start accepts. Automaton has 8396 states and 12639 transitions. Word has length 215 [2021-11-25 18:38:29,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:38:29,170 INFO L470 AbstractCegarLoop]: Abstraction has 8396 states and 12639 transitions. [2021-11-25 18:38:29,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-25 18:38:29,172 INFO L276 IsEmpty]: Start isEmpty. Operand 8396 states and 12639 transitions. [2021-11-25 18:38:29,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-25 18:38:29,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:38:29,209 INFO L514 BasicCegarLoop]: trace histogram [15, 13, 13, 13, 13, 13, 13, 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] [2021-11-25 18:38:29,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:38:29,209 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:38:29,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:38:29,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1527558549, now seen corresponding path program 1 times [2021-11-25 18:38:29,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:38:29,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525300419] [2021-11-25 18:38:29,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:38:29,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:38:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:38:29,756 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2021-11-25 18:38:29,756 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:38:29,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525300419] [2021-11-25 18:38:29,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525300419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:38:29,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:38:29,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:38:29,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093737467] [2021-11-25 18:38:29,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:38:29,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:38:29,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:38:29,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:38:29,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:38:29,761 INFO L87 Difference]: Start difference. First operand 8396 states and 12639 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-25 18:38:35,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:38:37,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:38:37,262 INFO L93 Difference]: Finished difference Result 24450 states and 36893 transitions. [2021-11-25 18:38:37,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:38:37,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 216 [2021-11-25 18:38:37,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:38:37,458 INFO L225 Difference]: With dead ends: 24450 [2021-11-25 18:38:37,467 INFO L226 Difference]: Without dead ends: 16081 [2021-11-25 18:38:37,542 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:38:37,546 INFO L933 BasicCegarLoop]: 4307 mSDtfsCounter, 3573 mSDsluCounter, 3779 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3573 SdHoareTripleChecker+Valid, 7672 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:38:37,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3573 Valid, 7672 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 859 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2021-11-25 18:38:37,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16081 states. [2021-11-25 18:38:39,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16081 to 16060. [2021-11-25 18:38:39,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16060 states, 9574 states have (on average 1.346354710674744) internal successors, (12890), 10155 states have internal predecessors, (12890), 5637 states have call successors, (5637), 856 states have call predecessors, (5637), 848 states have return successors, (5735), 5348 states have call predecessors, (5735), 5637 states have call successors, (5735) [2021-11-25 18:38:39,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16060 states to 16060 states and 24262 transitions. [2021-11-25 18:38:39,510 INFO L78 Accepts]: Start accepts. Automaton has 16060 states and 24262 transitions. Word has length 216 [2021-11-25 18:38:39,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:38:39,513 INFO L470 AbstractCegarLoop]: Abstraction has 16060 states and 24262 transitions. [2021-11-25 18:38:39,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-25 18:38:39,513 INFO L276 IsEmpty]: Start isEmpty. Operand 16060 states and 24262 transitions. [2021-11-25 18:38:39,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-25 18:38:39,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:38:39,561 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 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] [2021-11-25 18:38:39,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:38:39,562 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:38:39,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:38:39,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1146999482, now seen corresponding path program 1 times [2021-11-25 18:38:39,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:38:39,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275318680] [2021-11-25 18:38:39,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:38:39,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:38:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:38:40,113 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2021-11-25 18:38:40,113 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:38:40,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275318680] [2021-11-25 18:38:40,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275318680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:38:40,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:38:40,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:38:40,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239493994] [2021-11-25 18:38:40,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:38:40,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:38:40,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:38:40,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:38:40,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:38:40,117 INFO L87 Difference]: Start difference. First operand 16060 states and 24262 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-25 18:38:48,108 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:38:48,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:38:48,562 INFO L93 Difference]: Finished difference Result 38790 states and 58642 transitions. [2021-11-25 18:38:48,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:38:48,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 217 [2021-11-25 18:38:48,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:38:48,755 INFO L225 Difference]: With dead ends: 38790 [2021-11-25 18:38:48,755 INFO L226 Difference]: Without dead ends: 22757 [2021-11-25 18:38:48,961 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:38:48,967 INFO L933 BasicCegarLoop]: 5790 mSDtfsCounter, 2598 mSDsluCounter, 3854 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2598 SdHoareTripleChecker+Valid, 9222 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:38:48,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2598 Valid, 9222 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1186 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2021-11-25 18:38:49,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22757 states. [2021-11-25 18:38:50,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22757 to 22751. [2021-11-25 18:38:50,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22751 states, 13610 states have (on average 1.347391623806025) internal successors, (18338), 14415 states have internal predecessors, (18338), 7939 states have call successors, (7939), 1211 states have call predecessors, (7939), 1201 states have return successors, (8078), 7541 states have call predecessors, (8078), 7939 states have call successors, (8078) [2021-11-25 18:38:50,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22751 states to 22751 states and 34355 transitions. [2021-11-25 18:38:50,972 INFO L78 Accepts]: Start accepts. Automaton has 22751 states and 34355 transitions. Word has length 217 [2021-11-25 18:38:50,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:38:50,973 INFO L470 AbstractCegarLoop]: Abstraction has 22751 states and 34355 transitions. [2021-11-25 18:38:50,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-25 18:38:50,974 INFO L276 IsEmpty]: Start isEmpty. Operand 22751 states and 34355 transitions. [2021-11-25 18:38:51,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-25 18:38:51,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:38:51,041 INFO L514 BasicCegarLoop]: trace histogram [16, 13, 13, 13, 13, 13, 13, 3, 3, 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] [2021-11-25 18:38:51,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:38:51,042 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:38:51,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:38:51,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1104180102, now seen corresponding path program 1 times [2021-11-25 18:38:51,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:38:51,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786422720] [2021-11-25 18:38:51,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:38:51,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:38:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:38:51,682 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2021-11-25 18:38:51,683 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:38:51,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786422720] [2021-11-25 18:38:51,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786422720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:38:51,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:38:51,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:38:51,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273787424] [2021-11-25 18:38:51,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:38:51,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:38:51,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:38:51,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:38:51,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:38:51,686 INFO L87 Difference]: Start difference. First operand 22751 states and 34355 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-25 18:38:58,147 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:38:58,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:38:58,581 INFO L93 Difference]: Finished difference Result 48748 states and 73555 transitions. [2021-11-25 18:38:58,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:38:58,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 230 [2021-11-25 18:38:58,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:38:58,910 INFO L225 Difference]: With dead ends: 48748 [2021-11-25 18:38:58,911 INFO L226 Difference]: Without dead ends: 26024 [2021-11-25 18:38:59,006 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:38:59,010 INFO L933 BasicCegarLoop]: 4067 mSDtfsCounter, 2552 mSDsluCounter, 3869 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2552 SdHoareTripleChecker+Valid, 7511 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:38:59,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2552 Valid, 7511 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 887 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2021-11-25 18:38:59,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26024 states. [2021-11-25 18:39:01,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26024 to 26022. [2021-11-25 18:39:01,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26022 states, 15590 states have (on average 1.3468248877485567) internal successors, (20997), 16502 states have internal predecessors, (20997), 9038 states have call successors, (9038), 1404 states have call predecessors, (9038), 1393 states have return successors, (9196), 8590 states have call predecessors, (9196), 9038 states have call successors, (9196) [2021-11-25 18:39:01,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26022 states to 26022 states and 39231 transitions. [2021-11-25 18:39:01,302 INFO L78 Accepts]: Start accepts. Automaton has 26022 states and 39231 transitions. Word has length 230 [2021-11-25 18:39:01,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:39:01,303 INFO L470 AbstractCegarLoop]: Abstraction has 26022 states and 39231 transitions. [2021-11-25 18:39:01,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-25 18:39:01,303 INFO L276 IsEmpty]: Start isEmpty. Operand 26022 states and 39231 transitions. [2021-11-25 18:39:01,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-11-25 18:39:01,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:39:01,410 INFO L514 BasicCegarLoop]: trace histogram [19, 13, 13, 13, 13, 13, 13, 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, 1, 1, 1, 1, 1] [2021-11-25 18:39:01,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:39:01,411 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:39:01,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:39:01,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1847707731, now seen corresponding path program 1 times [2021-11-25 18:39:01,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:39:01,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228098180] [2021-11-25 18:39:01,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:39:01,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:39:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:39:01,989 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked. [2021-11-25 18:39:01,989 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:39:01,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228098180] [2021-11-25 18:39:01,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228098180] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:39:01,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:39:01,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:39:01,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765128468] [2021-11-25 18:39:01,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:39:01,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:39:01,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:39:01,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:39:01,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:39:01,992 INFO L87 Difference]: Start difference. First operand 26022 states and 39231 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-25 18:39:10,013 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:39:11,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:39:11,048 INFO L93 Difference]: Finished difference Result 59938 states and 90358 transitions. [2021-11-25 18:39:11,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:39:11,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 272 [2021-11-25 18:39:11,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:39:11,321 INFO L225 Difference]: With dead ends: 59938 [2021-11-25 18:39:11,322 INFO L226 Difference]: Without dead ends: 37138 [2021-11-25 18:39:11,430 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:39:11,432 INFO L933 BasicCegarLoop]: 6650 mSDtfsCounter, 3564 mSDsluCounter, 3887 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3564 SdHoareTripleChecker+Valid, 10106 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:39:11,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3564 Valid, 10106 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1287 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2021-11-25 18:39:11,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37138 states. [2021-11-25 18:39:13,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37138 to 37113. [2021-11-25 18:39:13,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37113 states, 22214 states have (on average 1.3464481858287567) internal successors, (29910), 23526 states have internal predecessors, (29910), 12901 states have call successors, (12901), 2013 states have call predecessors, (12901), 1997 states have return successors, (13124), 12252 states have call predecessors, (13124), 12901 states have call successors, (13124) [2021-11-25 18:39:14,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37113 states to 37113 states and 55935 transitions. [2021-11-25 18:39:14,370 INFO L78 Accepts]: Start accepts. Automaton has 37113 states and 55935 transitions. Word has length 272 [2021-11-25 18:39:14,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:39:14,388 INFO L470 AbstractCegarLoop]: Abstraction has 37113 states and 55935 transitions. [2021-11-25 18:39:14,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-25 18:39:14,388 INFO L276 IsEmpty]: Start isEmpty. Operand 37113 states and 55935 transitions. [2021-11-25 18:39:14,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-11-25 18:39:14,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:39:14,457 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 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] [2021-11-25 18:39:14,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:39:14,458 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:39:14,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:39:14,459 INFO L85 PathProgramCache]: Analyzing trace with hash -966427155, now seen corresponding path program 1 times [2021-11-25 18:39:14,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:39:14,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363102358] [2021-11-25 18:39:14,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:39:14,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:39:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:39:14,859 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2021-11-25 18:39:14,860 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:39:14,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363102358] [2021-11-25 18:39:14,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363102358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:39:14,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:39:14,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:39:14,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701510935] [2021-11-25 18:39:14,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:39:14,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:39:14,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:39:14,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:39:14,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:39:14,864 INFO L87 Difference]: Start difference. First operand 37113 states and 55935 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-25 18:39:22,468 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:39:23,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:39:23,222 INFO L93 Difference]: Finished difference Result 107436 states and 161861 transitions. [2021-11-25 18:39:23,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:39:23,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 273 [2021-11-25 18:39:23,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:39:23,828 INFO L225 Difference]: With dead ends: 107436 [2021-11-25 18:39:23,828 INFO L226 Difference]: Without dead ends: 70350 [2021-11-25 18:39:24,069 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:39:24,071 INFO L933 BasicCegarLoop]: 4362 mSDtfsCounter, 3570 mSDsluCounter, 3889 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3570 SdHoareTripleChecker+Valid, 7820 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:39:24,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3570 Valid, 7820 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 895 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2021-11-25 18:39:24,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70350 states. [2021-11-25 18:39:27,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70350 to 70325. [2021-11-25 18:39:28,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70325 states, 42087 states have (on average 1.344666999310951) internal successors, (56593), 44595 states have internal predecessors, (56593), 24422 states have call successors, (24422), 3846 states have call predecessors, (24422), 3815 states have return successors, (24819), 23177 states have call predecessors, (24819), 24422 states have call successors, (24819) [2021-11-25 18:39:28,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70325 states to 70325 states and 105834 transitions. [2021-11-25 18:39:28,962 INFO L78 Accepts]: Start accepts. Automaton has 70325 states and 105834 transitions. Word has length 273 [2021-11-25 18:39:28,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:39:28,963 INFO L470 AbstractCegarLoop]: Abstraction has 70325 states and 105834 transitions. [2021-11-25 18:39:28,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-25 18:39:28,963 INFO L276 IsEmpty]: Start isEmpty. Operand 70325 states and 105834 transitions. [2021-11-25 18:39:29,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-11-25 18:39:29,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:39:29,079 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 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] [2021-11-25 18:39:29,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:39:29,079 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:39:29,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:39:29,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1923210462, now seen corresponding path program 1 times [2021-11-25 18:39:29,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:39:29,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861952759] [2021-11-25 18:39:29,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:39:29,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:39:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:39:29,586 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2021-11-25 18:39:29,587 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:39:29,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861952759] [2021-11-25 18:39:29,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861952759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:39:29,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:39:29,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:39:29,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093970282] [2021-11-25 18:39:29,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:39:29,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:39:29,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:39:29,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:39:29,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:39:29,591 INFO L87 Difference]: Start difference. First operand 70325 states and 105834 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-25 18:39:39,099 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:39:40,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:39:40,012 INFO L93 Difference]: Finished difference Result 206859 states and 311245 transitions. [2021-11-25 18:39:40,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:39:40,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 275 [2021-11-25 18:39:40,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:39:40,897 INFO L225 Difference]: With dead ends: 206859 [2021-11-25 18:39:40,898 INFO L226 Difference]: Without dead ends: 136561 [2021-11-25 18:39:41,556 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:39:41,557 INFO L933 BasicCegarLoop]: 4377 mSDtfsCounter, 3568 mSDsluCounter, 3889 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3568 SdHoareTripleChecker+Valid, 7835 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:39:41,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3568 Valid, 7835 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 894 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2021-11-25 18:39:41,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136561 states. [2021-11-25 18:39:49,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136561 to 136536. [2021-11-25 18:39:49,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136536 states, 81701 states have (on average 1.3430190572942804) internal successors, (109726), 86612 states have internal predecessors, (109726), 47391 states have call successors, (47391), 7504 states have call predecessors, (47391), 7443 states have return successors, (48112), 44943 states have call predecessors, (48112), 47391 states have call successors, (48112) [2021-11-25 18:39:50,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136536 states to 136536 states and 205229 transitions. [2021-11-25 18:39:51,007 INFO L78 Accepts]: Start accepts. Automaton has 136536 states and 205229 transitions. Word has length 275 [2021-11-25 18:39:51,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:39:51,009 INFO L470 AbstractCegarLoop]: Abstraction has 136536 states and 205229 transitions. [2021-11-25 18:39:51,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-25 18:39:51,009 INFO L276 IsEmpty]: Start isEmpty. Operand 136536 states and 205229 transitions. [2021-11-25 18:39:51,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-11-25 18:39:51,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:39:51,154 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 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] [2021-11-25 18:39:51,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:39:51,154 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:39:51,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:39:51,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1515834779, now seen corresponding path program 1 times [2021-11-25 18:39:51,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:39:51,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175151602] [2021-11-25 18:39:51,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:39:51,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:39:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:39:51,616 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2021-11-25 18:39:51,617 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:39:51,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175151602] [2021-11-25 18:39:51,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175151602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:39:51,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:39:51,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:39:51,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828469927] [2021-11-25 18:39:51,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:39:51,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:39:51,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:39:51,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:39:51,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:39:51,621 INFO L87 Difference]: Start difference. First operand 136536 states and 205229 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35)