./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/bin/utaipan-TEXQjIfE4P --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 004fcd1800da3fcc8c5839d85d0662ed24df5100e10ec8a5024be56f561eab28 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:34:15,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:34:15,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:34:15,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:34:15,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:34:15,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:34:15,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:34:15,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:34:15,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:34:15,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:34:15,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:34:15,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:34:15,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:34:15,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:34:15,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:34:15,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:34:15,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:34:15,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:34:15,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:34:15,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:34:15,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:34:15,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:34:15,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:34:15,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:34:15,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:34:15,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:34:15,370 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:34:15,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:34:15,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:34:15,374 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:34:15,375 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:34:15,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:34:15,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:34:15,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:34:15,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:34:15,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:34:15,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:34:15,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:34:15,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:34:15,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:34:15,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:34:15,388 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:34:15,433 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:34:15,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:34:15,434 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:34:15,434 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:34:15,435 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:34:15,436 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:34:15,436 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:34:15,436 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:34:15,436 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:34:15,437 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:34:15,438 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:34:15,438 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:34:15,438 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:34:15,438 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:34:15,439 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:34:15,439 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:34:15,439 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:34:15,439 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:34:15,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:34:15,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:34:15,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:34:15,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:34:15,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:34:15,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:34:15,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:34:15,442 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:34:15,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:34:15,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:34:15,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:34:15,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:34:15,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:34:15,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:34:15,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:34:15,445 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:34:15,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:34:15,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:34:15,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:34:15,446 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:34:15,446 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_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 004fcd1800da3fcc8c5839d85d0662ed24df5100e10ec8a5024be56f561eab28 [2021-11-21 00:34:15,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:34:15,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:34:15,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:34:15,837 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:34:15,837 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:34:15,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2021-11-21 00:34:15,905 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/bin/utaipan-TEXQjIfE4P/data/9d75d85eb/f71fda4768974546948ba8d8debbd596/FLAG75d9506e5 [2021-11-21 00:34:16,874 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:34:16,875 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2021-11-21 00:34:16,942 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/bin/utaipan-TEXQjIfE4P/data/9d75d85eb/f71fda4768974546948ba8d8debbd596/FLAG75d9506e5 [2021-11-21 00:34:17,226 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/bin/utaipan-TEXQjIfE4P/data/9d75d85eb/f71fda4768974546948ba8d8debbd596 [2021-11-21 00:34:17,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:34:17,232 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:34:17,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:34:17,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:34:17,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:34:17,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:34:17" (1/1) ... [2021-11-21 00:34:17,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6a1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:17, skipping insertion in model container [2021-11-21 00:34:17,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:34:17" (1/1) ... [2021-11-21 00:34:17,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:34:17,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:34:21,925 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_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[452511,452524] [2021-11-21 00:34:21,928 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_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[452656,452669] [2021-11-21 00:34:21,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:34:22,006 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:34:22,580 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_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[452511,452524] [2021-11-21 00:34:22,581 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_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[452656,452669] [2021-11-21 00:34:22,590 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:34:22,897 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:34:22,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:22 WrapperNode [2021-11-21 00:34:22,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:34:22,899 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:34:22,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:34:22,899 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:34:22,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:22" (1/1) ... [2021-11-21 00:34:23,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:22" (1/1) ... [2021-11-21 00:34:23,427 INFO L137 Inliner]: procedures = 548, calls = 4413, calls flagged for inlining = 251, calls inlined = 230, statements flattened = 8724 [2021-11-21 00:34:23,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:34:23,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:34:23,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:34:23,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:34:23,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:22" (1/1) ... [2021-11-21 00:34:23,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:22" (1/1) ... [2021-11-21 00:34:23,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:22" (1/1) ... [2021-11-21 00:34:23,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:22" (1/1) ... [2021-11-21 00:34:23,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:22" (1/1) ... [2021-11-21 00:34:23,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:22" (1/1) ... [2021-11-21 00:34:23,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:22" (1/1) ... [2021-11-21 00:34:23,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:34:23,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:34:23,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:34:23,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:34:23,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:22" (1/1) ... [2021-11-21 00:34:23,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:34:23,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:34:23,931 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:34:23,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:34:23,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_122 [2021-11-21 00:34:23,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_122 [2021-11-21 00:34:23,980 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-21 00:34:23,980 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-21 00:34:23,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 00:34:23,981 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 00:34:23,981 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-21 00:34:23,981 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-21 00:34:23,981 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2021-11-21 00:34:23,981 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2021-11-21 00:34:23,981 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_nway_reset [2021-11-21 00:34:23,982 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_nway_reset [2021-11-21 00:34:23,982 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 00:34:23,982 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 00:34:23,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_88 [2021-11-21 00:34:23,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_88 [2021-11-21 00:34:23,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_107 [2021-11-21 00:34:23,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_107 [2021-11-21 00:34:23,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:34:23,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:34:23,983 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-21 00:34:23,983 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-21 00:34:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure set_8021q_mode [2021-11-21 00:34:23,984 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8021q_mode [2021-11-21 00:34:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_remove_one [2021-11-21 00:34:23,984 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_remove_one [2021-11-21 00:34:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-21 00:34:23,984 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-21 00:34:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure issue_and_wait [2021-11-21 00:34:23,985 INFO L138 BoogieDeclarations]: Found implementation of procedure issue_and_wait [2021-11-21 00:34:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 00:34:23,985 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 00:34:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-21 00:34:23,985 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-21 00:34:23,986 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-21 00:34:23,986 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-21 00:34:23,986 INFO L130 BoogieDeclarations]: Found specification of procedure window_write32 [2021-11-21 00:34:23,986 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write32 [2021-11-21 00:34:23,986 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-21 00:34:23,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-21 00:34:23,987 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-21 00:34:23,987 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-21 00:34:23,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_5 [2021-11-21 00:34:23,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_5 [2021-11-21 00:34:23,987 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 00:34:23,987 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 00:34:23,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_window_lock_of_vortex_private [2021-11-21 00:34:23,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_window_lock_of_vortex_private [2021-11-21 00:34:23,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_vortex_private [2021-11-21 00:34:23,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_vortex_private [2021-11-21 00:34:23,988 INFO L130 BoogieDeclarations]: Found specification of procedure window_set [2021-11-21 00:34:23,988 INFO L138 BoogieDeclarations]: Found implementation of procedure window_set [2021-11-21 00:34:23,989 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 00:34:23,989 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 00:34:23,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 00:34:23,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 00:34:23,989 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 00:34:23,990 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 00:34:23,990 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-21 00:34:23,990 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-21 00:34:23,990 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-21 00:34:23,990 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-21 00:34:23,990 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-21 00:34:23,991 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-21 00:34:23,991 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 00:34:23,991 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 00:34:23,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 00:34:23,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 00:34:23,991 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-11-21 00:34:23,992 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-11-21 00:34:23,992 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 00:34:23,992 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 00:34:23,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_5_2 [2021-11-21 00:34:23,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_5_2 [2021-11-21 00:34:23,992 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-21 00:34:23,993 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-21 00:34:23,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:34:23,993 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tx_timestamp [2021-11-21 00:34:23,993 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tx_timestamp [2021-11-21 00:34:23,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-21 00:34:23,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-21 00:34:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 00:34:23,994 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 00:34:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_118 [2021-11-21 00:34:23,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_118 [2021-11-21 00:34:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 00:34:23,994 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 00:34:23,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_114 [2021-11-21 00:34:23,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_114 [2021-11-21 00:34:23,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 00:34:23,995 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_tx_timeout [2021-11-21 00:34:23,995 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_tx_timeout [2021-11-21 00:34:23,995 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-21 00:34:23,996 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-21 00:34:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure ioport_map [2021-11-21 00:34:23,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ioport_map [2021-11-21 00:34:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 00:34:23,996 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 00:34:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-21 00:34:23,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-21 00:34:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 00:34:23,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 00:34:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 00:34:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_106 [2021-11-21 00:34:23,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_106 [2021-11-21 00:34:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 00:34:23,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 00:34:23,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:34:23,998 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_interrupt [2021-11-21 00:34:23,998 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_interrupt [2021-11-21 00:34:23,998 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-21 00:34:23,999 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-21 00:34:23,999 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 00:34:23,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 00:34:23,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 00:34:23,999 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 00:34:23,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-21 00:34:24,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-21 00:34:24,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 00:34:24,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 00:34:24,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 00:34:24,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 00:34:24,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-21 00:34:24,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-21 00:34:24,001 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_set_duplex [2021-11-21 00:34:24,001 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_set_duplex [2021-11-21 00:34:24,001 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_132 [2021-11-21 00:34:24,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_132 [2021-11-21 00:34:24,001 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-11-21 00:34:24,002 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-11-21 00:34:24,002 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-21 00:34:24,002 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-21 00:34:24,002 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_error [2021-11-21 00:34:24,002 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_error [2021-11-21 00:34:24,002 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 00:34:24,003 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 00:34:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_close [2021-11-21 00:34:24,003 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_close [2021-11-21 00:34:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:34:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2021-11-21 00:34:24,003 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2021-11-21 00:34:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-21 00:34:24,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-21 00:34:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:34:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 00:34:24,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 00:34:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 00:34:24,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 00:34:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:34:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-21 00:34:24,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-21 00:34:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 00:34:24,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 00:34:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-21 00:34:24,006 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-21 00:34:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:34:24,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:34:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-21 00:34:24,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-21 00:34:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-21 00:34:24,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-21 00:34:24,007 INFO L130 BoogieDeclarations]: Found specification of procedure acpi_set_WOL [2021-11-21 00:34:24,007 INFO L138 BoogieDeclarations]: Found implementation of procedure acpi_set_WOL [2021-11-21 00:34:24,007 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-21 00:34:24,007 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-21 00:34:24,007 INFO L130 BoogieDeclarations]: Found specification of procedure window_write16 [2021-11-21 00:34:24,007 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write16 [2021-11-21 00:34:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-21 00:34:24,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-21 00:34:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 00:34:24,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 00:34:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure window_read8 [2021-11-21 00:34:24,008 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read8 [2021-11-21 00:34:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-21 00:34:24,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-21 00:34:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure update_stats [2021-11-21 00:34:24,009 INFO L138 BoogieDeclarations]: Found implementation of procedure update_stats [2021-11-21 00:34:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 00:34:24,009 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 00:34:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-21 00:34:24,010 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-21 00:34:24,010 INFO L130 BoogieDeclarations]: Found specification of procedure poll_vortex [2021-11-21 00:34:24,010 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_vortex [2021-11-21 00:34:24,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 00:34:24,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 00:34:24,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_window_lock_of_vortex_private [2021-11-21 00:34:24,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_window_lock_of_vortex_private [2021-11-21 00:34:24,011 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_check_media [2021-11-21 00:34:24,011 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_check_media [2021-11-21 00:34:24,011 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-11-21 00:34:24,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-11-21 00:34:24,011 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-21 00:34:24,012 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-21 00:34:24,012 INFO L130 BoogieDeclarations]: Found specification of procedure boomerang_rx [2021-11-21 00:34:24,012 INFO L138 BoogieDeclarations]: Found implementation of procedure boomerang_rx [2021-11-21 00:34:24,012 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-11-21 00:34:24,012 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-11-21 00:34:24,012 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_open [2021-11-21 00:34:24,012 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_open [2021-11-21 00:34:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure dump_tx_ring [2021-11-21 00:34:24,013 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_tx_ring [2021-11-21 00:34:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-21 00:34:24,013 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-21 00:34:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:34:24,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:34:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_probe1 [2021-11-21 00:34:24,014 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_probe1 [2021-11-21 00:34:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 00:34:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:34:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 00:34:24,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 00:34:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-21 00:34:24,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-21 00:34:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2021-11-21 00:34:24,015 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2021-11-21 00:34:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-21 00:34:24,015 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-21 00:34:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 00:34:24,016 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 00:34:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-21 00:34:24,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-21 00:34:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 00:34:24,016 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 00:34:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-21 00:34:24,017 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-21 00:34:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:34:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_111 [2021-11-21 00:34:24,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_111 [2021-11-21 00:34:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-21 00:34:24,018 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-21 00:34:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-21 00:34:24,018 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-21 00:34:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:34:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_suspend [2021-11-21 00:34:24,018 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_suspend [2021-11-21 00:34:24,019 INFO L130 BoogieDeclarations]: Found specification of procedure boomerang_interrupt [2021-11-21 00:34:24,019 INFO L138 BoogieDeclarations]: Found implementation of procedure boomerang_interrupt [2021-11-21 00:34:24,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:34:24,019 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-21 00:34:24,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-21 00:34:24,019 INFO L130 BoogieDeclarations]: Found specification of procedure rx_oom_timer [2021-11-21 00:34:24,019 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_oom_timer [2021-11-21 00:34:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-21 00:34:24,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-21 00:34:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 00:34:24,020 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 00:34:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 00:34:24,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 00:34:24,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-21 00:34:24,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-21 00:34:24,021 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-21 00:34:24,021 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-21 00:34:24,021 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2021-11-21 00:34:24,021 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2021-11-21 00:34:24,021 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_resume [2021-11-21 00:34:24,022 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_resume [2021-11-21 00:34:24,022 INFO L130 BoogieDeclarations]: Found specification of procedure pci_restore_state [2021-11-21 00:34:24,022 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_restore_state [2021-11-21 00:34:24,022 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-21 00:34:24,022 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-21 00:34:24,022 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_rx [2021-11-21 00:34:24,023 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_rx [2021-11-21 00:34:24,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_105 [2021-11-21 00:34:24,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_105 [2021-11-21 00:34:24,023 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 00:34:24,023 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 00:34:24,023 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 00:34:24,024 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 00:34:24,024 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-21 00:34:24,024 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-21 00:34:24,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_133 [2021-11-21 00:34:24,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_133 [2021-11-21 00:34:24,024 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 00:34:24,024 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 00:34:24,025 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_delay [2021-11-21 00:34:24,025 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_delay [2021-11-21 00:34:24,025 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_timer [2021-11-21 00:34:24,025 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_timer [2021-11-21 00:34:24,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:34:24,025 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_down [2021-11-21 00:34:24,026 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_down [2021-11-21 00:34:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-11-21 00:34:24,026 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-11-21 00:34:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-21 00:34:24,026 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-21 00:34:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 00:34:24,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 00:34:24,027 INFO L130 BoogieDeclarations]: Found specification of procedure window_write8 [2021-11-21 00:34:24,027 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write8 [2021-11-21 00:34:24,027 INFO L130 BoogieDeclarations]: Found specification of procedure window_read32 [2021-11-21 00:34:24,027 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read32 [2021-11-21 00:34:24,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_10_2 [2021-11-21 00:34:24,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_10_2 [2021-11-21 00:34:24,027 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-21 00:34:24,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-21 00:34:24,028 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32_rep [2021-11-21 00:34:24,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32_rep [2021-11-21 00:34:24,028 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-21 00:34:24,028 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-21 00:34:24,028 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_up [2021-11-21 00:34:24,029 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_up [2021-11-21 00:34:24,029 INFO L130 BoogieDeclarations]: Found specification of procedure window_read16 [2021-11-21 00:34:24,029 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read16 [2021-11-21 00:34:24,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 00:34:24,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 00:34:24,029 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-21 00:34:24,029 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-21 00:34:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-21 00:34:24,030 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-21 00:34:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-21 00:34:24,030 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-21 00:34:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_vortex_private [2021-11-21 00:34:24,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_vortex_private [2021-11-21 00:34:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-21 00:34:24,031 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-21 00:34:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_112 [2021-11-21 00:34:24,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_112 [2021-11-21 00:34:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_113 [2021-11-21 00:34:24,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_113 [2021-11-21 00:34:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:34:24,032 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 00:34:24,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 00:34:24,032 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-21 00:34:24,032 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-21 00:34:25,075 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:34:25,079 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:34:26,839 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 00:34:33,215 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:34:35,846 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:34:35,847 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 00:34:35,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:34:35 BoogieIcfgContainer [2021-11-21 00:34:35,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:34:35,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:34:35,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:34:35,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:34:35,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:34:17" (1/3) ... [2021-11-21 00:34:35,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a954c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:34:35, skipping insertion in model container [2021-11-21 00:34:35,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:34:22" (2/3) ... [2021-11-21 00:34:35,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a954c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:34:35, skipping insertion in model container [2021-11-21 00:34:35,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:34:35" (3/3) ... [2021-11-21 00:34:35,863 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2021-11-21 00:34:35,875 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:34:35,875 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:34:35,950 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:34:35,964 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 [2021-11-21 00:34:35,965 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:34:36,050 INFO L276 IsEmpty]: Start isEmpty. Operand has 2088 states, 1173 states have (on average 1.3009377664109123) internal successors, (1526), 1259 states have internal predecessors, (1526), 760 states have call successors, (760), 154 states have call predecessors, (760), 153 states have return successors, (753), 735 states have call predecessors, (753), 753 states have call successors, (753) [2021-11-21 00:34:36,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-21 00:34:36,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:36,077 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 5, 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] [2021-11-21 00:34:36,078 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:34:36,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:36,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1318744723, now seen corresponding path program 1 times [2021-11-21 00:34:36,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:34:36,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188786859] [2021-11-21 00:34:36,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:36,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:34:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-21 00:34:37,865 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:34:37,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188786859] [2021-11-21 00:34:37,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188786859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:37,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:37,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:34:37,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862309374] [2021-11-21 00:34:37,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:37,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:34:37,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:34:37,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:34:37,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:34:37,922 INFO L87 Difference]: Start difference. First operand has 2088 states, 1173 states have (on average 1.3009377664109123) internal successors, (1526), 1259 states have internal predecessors, (1526), 760 states have call successors, (760), 154 states have call predecessors, (760), 153 states have return successors, (753), 735 states have call predecessors, (753), 753 states have call successors, (753) Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-21 00:34:40,465 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:42,878 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:44,899 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:54,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:54,649 INFO L93 Difference]: Finished difference Result 4913 states and 7223 transitions. [2021-11-21 00:34:54,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:34:54,653 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 118 [2021-11-21 00:34:54,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:54,729 INFO L225 Difference]: With dead ends: 4913 [2021-11-21 00:34:54,729 INFO L226 Difference]: Without dead ends: 2757 [2021-11-21 00:34:54,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:34:54,774 INFO L933 BasicCegarLoop]: 2936 mSDtfsCounter, 997 mSDsluCounter, 12376 mSDsCounter, 0 mSdLazyCounter, 2495 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 13836 SdHoareTripleChecker+Invalid, 2503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2495 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:54,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [998 Valid, 13836 Invalid, 2503 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 2495 Invalid, 2 Unknown, 0 Unchecked, 15.9s Time] [2021-11-21 00:34:54,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2021-11-21 00:34:55,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2750. [2021-11-21 00:34:55,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2750 states, 1568 states have (on average 1.280612244897959) internal successors, (2008), 1670 states have internal predecessors, (2008), 957 states have call successors, (957), 236 states have call predecessors, (957), 224 states have return successors, (997), 918 states have call predecessors, (997), 957 states have call successors, (997) [2021-11-21 00:34:55,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 3962 transitions. [2021-11-21 00:34:55,408 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 3962 transitions. Word has length 118 [2021-11-21 00:34:55,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:55,413 INFO L470 AbstractCegarLoop]: Abstraction has 2750 states and 3962 transitions. [2021-11-21 00:34:55,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-21 00:34:55,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 3962 transitions. [2021-11-21 00:34:55,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-21 00:34:55,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:55,454 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:34:55,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:34:55,454 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:34:55,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:55,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1782148107, now seen corresponding path program 1 times [2021-11-21 00:34:55,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:34:55,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314567081] [2021-11-21 00:34:55,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:55,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:34:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:58,279 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-21 00:34:58,281 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:34:58,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314567081] [2021-11-21 00:34:58,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314567081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:58,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:58,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:34:58,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945534032] [2021-11-21 00:34:58,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:58,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:34:58,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:34:58,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:34:58,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:34:58,293 INFO L87 Difference]: Start difference. First operand 2750 states and 3962 transitions. Second operand has 5 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-21 00:35:00,562 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:02,799 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:08,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:35:08,674 INFO L93 Difference]: Finished difference Result 4779 states and 6939 transitions. [2021-11-21 00:35:08,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:35:08,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 201 [2021-11-21 00:35:08,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:35:08,710 INFO L225 Difference]: With dead ends: 4779 [2021-11-21 00:35:08,710 INFO L226 Difference]: Without dead ends: 2754 [2021-11-21 00:35:08,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:35:08,730 INFO L933 BasicCegarLoop]: 2592 mSDtfsCounter, 6 mSDsluCounter, 8859 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 10357 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:35:08,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 10357 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1472 Invalid, 2 Unknown, 0 Unchecked, 10.0s Time] [2021-11-21 00:35:08,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2021-11-21 00:35:08,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 2754. [2021-11-21 00:35:08,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2754 states, 1571 states have (on average 1.2800763844684915) internal successors, (2011), 1673 states have internal predecessors, (2011), 957 states have call successors, (957), 237 states have call predecessors, (957), 225 states have return successors, (997), 918 states have call predecessors, (997), 957 states have call successors, (997) [2021-11-21 00:35:08,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2754 states to 2754 states and 3965 transitions. [2021-11-21 00:35:08,998 INFO L78 Accepts]: Start accepts. Automaton has 2754 states and 3965 transitions. Word has length 201 [2021-11-21 00:35:09,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:35:09,001 INFO L470 AbstractCegarLoop]: Abstraction has 2754 states and 3965 transitions. [2021-11-21 00:35:09,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-21 00:35:09,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2754 states and 3965 transitions. [2021-11-21 00:35:09,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-21 00:35:09,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:35:09,020 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 00:35:09,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:35:09,021 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:35:09,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:35:09,022 INFO L85 PathProgramCache]: Analyzing trace with hash -201258096, now seen corresponding path program 1 times [2021-11-21 00:35:09,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:35:09,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868264212] [2021-11-21 00:35:09,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:35:09,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:35:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:35:10,678 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-21 00:35:10,679 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:35:10,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868264212] [2021-11-21 00:35:10,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868264212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:35:10,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:35:10,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:35:10,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312182628] [2021-11-21 00:35:10,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:35:10,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:35:10,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:35:10,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:35:10,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:35:10,683 INFO L87 Difference]: Start difference. First operand 2754 states and 3965 transitions. Second operand has 5 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-21 00:35:12,943 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:14,772 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:15,783 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:16,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:22,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:35:22,838 INFO L93 Difference]: Finished difference Result 4795 states and 6953 transitions. [2021-11-21 00:35:22,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:35:22,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 198 [2021-11-21 00:35:22,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:35:22,874 INFO L225 Difference]: With dead ends: 4795 [2021-11-21 00:35:22,875 INFO L226 Difference]: Without dead ends: 2766 [2021-11-21 00:35:22,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:35:22,895 INFO L933 BasicCegarLoop]: 2602 mSDtfsCounter, 19 mSDsluCounter, 8881 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 10384 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:35:22,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 10384 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1480 Invalid, 1 Unknown, 0 Unchecked, 11.9s Time] [2021-11-21 00:35:22,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2021-11-21 00:35:23,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2758. [2021-11-21 00:35:23,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2758 states, 1574 states have (on average 1.2795425667090217) internal successors, (2014), 1676 states have internal predecessors, (2014), 957 states have call successors, (957), 238 states have call predecessors, (957), 226 states have return successors, (997), 918 states have call predecessors, (997), 957 states have call successors, (997) [2021-11-21 00:35:23,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2758 states to 2758 states and 3968 transitions. [2021-11-21 00:35:23,101 INFO L78 Accepts]: Start accepts. Automaton has 2758 states and 3968 transitions. Word has length 198 [2021-11-21 00:35:23,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:35:23,103 INFO L470 AbstractCegarLoop]: Abstraction has 2758 states and 3968 transitions. [2021-11-21 00:35:23,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-21 00:35:23,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2758 states and 3968 transitions. [2021-11-21 00:35:23,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-21 00:35:23,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:35:23,125 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:35:23,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:35:23,125 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:35:23,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:35:23,126 INFO L85 PathProgramCache]: Analyzing trace with hash 131865195, now seen corresponding path program 1 times [2021-11-21 00:35:23,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:35:23,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323905348] [2021-11-21 00:35:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:35:23,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:35:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:35:23,608 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-11-21 00:35:23,608 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:35:23,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323905348] [2021-11-21 00:35:23,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323905348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:35:23,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:35:23,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:35:23,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562305563] [2021-11-21 00:35:23,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:35:23,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:35:23,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:35:23,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:35:23,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:35:23,614 INFO L87 Difference]: Start difference. First operand 2758 states and 3968 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-21 00:35:25,944 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:29,054 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:31,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:35:31,828 INFO L93 Difference]: Finished difference Result 6671 states and 9535 transitions. [2021-11-21 00:35:31,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:35:31,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 204 [2021-11-21 00:35:31,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:35:31,885 INFO L225 Difference]: With dead ends: 6671 [2021-11-21 00:35:31,885 INFO L226 Difference]: Without dead ends: 4071 [2021-11-21 00:35:31,906 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 [2021-11-21 00:35:31,909 INFO L933 BasicCegarLoop]: 3116 mSDtfsCounter, 2442 mSDsluCounter, 2359 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2443 SdHoareTripleChecker+Valid, 5186 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:35:31,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2443 Valid, 5186 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 667 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2021-11-21 00:35:31,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2021-11-21 00:35:32,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 4069. [2021-11-21 00:35:32,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4069 states, 2292 states have (on average 1.2757417102966842) internal successors, (2924), 2447 states have internal predecessors, (2924), 1424 states have call successors, (1424), 363 states have call predecessors, (1424), 352 states have return successors, (1464), 1375 states have call predecessors, (1464), 1424 states have call successors, (1464) [2021-11-21 00:35:32,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4069 states to 4069 states and 5812 transitions. [2021-11-21 00:35:32,277 INFO L78 Accepts]: Start accepts. Automaton has 4069 states and 5812 transitions. Word has length 204 [2021-11-21 00:35:32,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:35:32,278 INFO L470 AbstractCegarLoop]: Abstraction has 4069 states and 5812 transitions. [2021-11-21 00:35:32,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-21 00:35:32,280 INFO L276 IsEmpty]: Start isEmpty. Operand 4069 states and 5812 transitions. [2021-11-21 00:35:32,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-11-21 00:35:32,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:35:32,306 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:35:32,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:35:32,307 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:35:32,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:35:32,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1114395318, now seen corresponding path program 1 times [2021-11-21 00:35:32,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:35:32,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217566300] [2021-11-21 00:35:32,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:35:32,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:35:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:35:33,732 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2021-11-21 00:35:33,733 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:35:33,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217566300] [2021-11-21 00:35:33,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217566300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:35:33,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:35:33,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-21 00:35:33,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741145404] [2021-11-21 00:35:33,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:35:33,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 00:35:33,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:35:33,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 00:35:33,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:35:33,736 INFO L87 Difference]: Start difference. First operand 4069 states and 5812 transitions. Second operand has 11 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 7 states have call successors, (61), 4 states have call predecessors, (61), 6 states have return successors, (58), 8 states have call predecessors, (58), 7 states have call successors, (58) [2021-11-21 00:35:38,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:42,601 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:45,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:47,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:49,825 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:19,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:36:19,371 INFO L93 Difference]: Finished difference Result 8952 states and 12940 transitions. [2021-11-21 00:36:19,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-21 00:36:19,373 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 7 states have call successors, (61), 4 states have call predecessors, (61), 6 states have return successors, (58), 8 states have call predecessors, (58), 7 states have call successors, (58) Word has length 320 [2021-11-21 00:36:19,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:36:19,462 INFO L225 Difference]: With dead ends: 8952 [2021-11-21 00:36:19,463 INFO L226 Difference]: Without dead ends: 8950 [2021-11-21 00:36:19,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2021-11-21 00:36:19,471 INFO L933 BasicCegarLoop]: 3344 mSDtfsCounter, 5704 mSDsluCounter, 15836 mSDsCounter, 0 mSdLazyCounter, 20024 mSolverCounterSat, 4634 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6527 SdHoareTripleChecker+Valid, 17054 SdHoareTripleChecker+Invalid, 24662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4634 IncrementalHoareTripleChecker+Valid, 20024 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:36:19,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6527 Valid, 17054 Invalid, 24662 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4634 Valid, 20024 Invalid, 4 Unknown, 0 Unchecked, 43.9s Time] [2021-11-21 00:36:19,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8950 states. [2021-11-21 00:36:20,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8950 to 8543. [2021-11-21 00:36:20,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8543 states, 4841 states have (on average 1.2718446601941749) internal successors, (6157), 5168 states have internal predecessors, (6157), 2928 states have call successors, (2928), 800 states have call predecessors, (2928), 773 states have return successors, (3183), 2809 states have call predecessors, (3183), 2928 states have call successors, (3183) [2021-11-21 00:36:20,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8543 states to 8543 states and 12268 transitions. [2021-11-21 00:36:20,145 INFO L78 Accepts]: Start accepts. Automaton has 8543 states and 12268 transitions. Word has length 320 [2021-11-21 00:36:20,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:36:20,149 INFO L470 AbstractCegarLoop]: Abstraction has 8543 states and 12268 transitions. [2021-11-21 00:36:20,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 7 states have call successors, (61), 4 states have call predecessors, (61), 6 states have return successors, (58), 8 states have call predecessors, (58), 7 states have call successors, (58) [2021-11-21 00:36:20,149 INFO L276 IsEmpty]: Start isEmpty. Operand 8543 states and 12268 transitions. [2021-11-21 00:36:20,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-21 00:36:20,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:36:20,176 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:36:20,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:36:20,176 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:36:20,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:36:20,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1691707317, now seen corresponding path program 1 times [2021-11-21 00:36:20,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:36:20,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449818194] [2021-11-21 00:36:20,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:36:20,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:36:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:36:21,255 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2021-11-21 00:36:21,255 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:36:21,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449818194] [2021-11-21 00:36:21,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449818194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:36:21,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:36:21,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 00:36:21,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365633101] [2021-11-21 00:36:21,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:36:21,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 00:36:21,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:36:21,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 00:36:21,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:36:21,259 INFO L87 Difference]: Start difference. First operand 8543 states and 12268 transitions. Second operand has 9 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 4 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (42), 5 states have call predecessors, (42), 4 states have call successors, (42) [2021-11-21 00:36:25,883 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:27,906 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:29,929 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:31,678 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:36,636 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:38,658 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:54,329 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:56,353 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:02,252 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:07,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:37:07,550 INFO L93 Difference]: Finished difference Result 9967 states and 14418 transitions. [2021-11-21 00:37:07,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 00:37:07,550 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 4 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (42), 5 states have call predecessors, (42), 4 states have call successors, (42) Word has length 262 [2021-11-21 00:37:07,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:37:07,641 INFO L225 Difference]: With dead ends: 9967 [2021-11-21 00:37:07,641 INFO L226 Difference]: Without dead ends: 9965 [2021-11-21 00:37:07,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-11-21 00:37:07,650 INFO L933 BasicCegarLoop]: 2553 mSDtfsCounter, 1782 mSDsluCounter, 11225 mSDsCounter, 0 mSdLazyCounter, 13099 mSolverCounterSat, 1665 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2055 SdHoareTripleChecker+Valid, 12341 SdHoareTripleChecker+Invalid, 14770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1665 IncrementalHoareTripleChecker+Valid, 13099 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:37:07,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2055 Valid, 12341 Invalid, 14770 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1665 Valid, 13099 Invalid, 6 Unknown, 0 Unchecked, 45.3s Time] [2021-11-21 00:37:07,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9965 states. [2021-11-21 00:37:08,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9965 to 9498. [2021-11-21 00:37:08,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9498 states, 5394 states have (on average 1.2673340748980348) internal successors, (6836), 5750 states have internal predecessors, (6836), 3213 states have call successors, (3213), 903 states have call predecessors, (3213), 890 states have return successors, (3588), 3092 states have call predecessors, (3588), 3213 states have call successors, (3588) [2021-11-21 00:37:08,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9498 states to 9498 states and 13637 transitions. [2021-11-21 00:37:08,549 INFO L78 Accepts]: Start accepts. Automaton has 9498 states and 13637 transitions. Word has length 262 [2021-11-21 00:37:08,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:37:08,551 INFO L470 AbstractCegarLoop]: Abstraction has 9498 states and 13637 transitions. [2021-11-21 00:37:08,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 4 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (42), 5 states have call predecessors, (42), 4 states have call successors, (42) [2021-11-21 00:37:08,551 INFO L276 IsEmpty]: Start isEmpty. Operand 9498 states and 13637 transitions. [2021-11-21 00:37:08,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2021-11-21 00:37:08,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:37:08,601 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:37:08,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:37:08,601 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:37:08,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:37:08,602 INFO L85 PathProgramCache]: Analyzing trace with hash 807845533, now seen corresponding path program 1 times [2021-11-21 00:37:08,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:37:08,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620600051] [2021-11-21 00:37:08,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:37:08,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:37:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:37:09,103 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2021-11-21 00:37:09,103 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:37:09,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620600051] [2021-11-21 00:37:09,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620600051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:37:09,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:37:09,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:37:09,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60336832] [2021-11-21 00:37:09,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:37:09,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:37:09,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:37:09,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:37:09,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:37:09,108 INFO L87 Difference]: Start difference. First operand 9498 states and 13637 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 4 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) [2021-11-21 00:37:11,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:14,957 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:23,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:37:23,190 INFO L93 Difference]: Finished difference Result 28259 states and 41355 transitions. [2021-11-21 00:37:23,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:37:23,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 4 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) Word has length 425 [2021-11-21 00:37:23,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:37:23,326 INFO L225 Difference]: With dead ends: 28259 [2021-11-21 00:37:23,327 INFO L226 Difference]: Without dead ends: 18777 [2021-11-21 00:37:23,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:37:23,407 INFO L933 BasicCegarLoop]: 5400 mSDtfsCounter, 4976 mSDsluCounter, 5607 mSDsCounter, 0 mSdLazyCounter, 4405 mSolverCounterSat, 70 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4976 SdHoareTripleChecker+Valid, 10100 SdHoareTripleChecker+Invalid, 4476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 4405 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:37:23,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4976 Valid, 10100 Invalid, 4476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 4405 Invalid, 1 Unknown, 0 Unchecked, 13.1s Time] [2021-11-21 00:37:23,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18777 states. [2021-11-21 00:37:24,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18777 to 18324. [2021-11-21 00:37:24,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18324 states, 10364 states have (on average 1.2634118101119258) internal successors, (13094), 11075 states have internal predecessors, (13094), 6212 states have call successors, (6212), 1755 states have call predecessors, (6212), 1747 states have return successors, (7082), 6001 states have call predecessors, (7082), 6212 states have call successors, (7082) [2021-11-21 00:37:24,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18324 states to 18324 states and 26388 transitions. [2021-11-21 00:37:24,789 INFO L78 Accepts]: Start accepts. Automaton has 18324 states and 26388 transitions. Word has length 425 [2021-11-21 00:37:24,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:37:24,791 INFO L470 AbstractCegarLoop]: Abstraction has 18324 states and 26388 transitions. [2021-11-21 00:37:24,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 4 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) [2021-11-21 00:37:24,792 INFO L276 IsEmpty]: Start isEmpty. Operand 18324 states and 26388 transitions. [2021-11-21 00:37:24,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2021-11-21 00:37:24,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:37:24,843 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 11, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:37:24,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:37:24,844 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:37:24,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:37:24,845 INFO L85 PathProgramCache]: Analyzing trace with hash -598718326, now seen corresponding path program 1 times [2021-11-21 00:37:24,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:37:24,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027769696] [2021-11-21 00:37:24,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:37:24,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:37:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:37:25,346 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2021-11-21 00:37:25,346 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:37:25,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027769696] [2021-11-21 00:37:25,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027769696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:37:25,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:37:25,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:37:25,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567825070] [2021-11-21 00:37:25,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:37:25,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:37:25,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:37:25,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:37:25,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:37:25,349 INFO L87 Difference]: Start difference. First operand 18324 states and 26388 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) [2021-11-21 00:37:27,783 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:29,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:31,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:37:31,878 INFO L93 Difference]: Finished difference Result 33176 states and 47989 transitions. [2021-11-21 00:37:31,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:37:31,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) Word has length 366 [2021-11-21 00:37:31,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:37:32,025 INFO L225 Difference]: With dead ends: 33176 [2021-11-21 00:37:32,025 INFO L226 Difference]: Without dead ends: 18522 [2021-11-21 00:37:32,106 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 [2021-11-21 00:37:32,107 INFO L933 BasicCegarLoop]: 2599 mSDtfsCounter, 34 mSDsluCounter, 2920 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 5155 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:37:32,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 5155 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 737 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2021-11-21 00:37:32,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18522 states. [2021-11-21 00:37:33,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18522 to 18462. [2021-11-21 00:37:33,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18462 states, 10443 states have (on average 1.2650579335440009) internal successors, (13211), 11164 states have internal predecessors, (13211), 6271 states have call successors, (6271), 1755 states have call predecessors, (6271), 1747 states have return successors, (7143), 6055 states have call predecessors, (7143), 6271 states have call successors, (7143) [2021-11-21 00:37:33,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18462 states to 18462 states and 26625 transitions. [2021-11-21 00:37:33,739 INFO L78 Accepts]: Start accepts. Automaton has 18462 states and 26625 transitions. Word has length 366 [2021-11-21 00:37:33,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:37:33,740 INFO L470 AbstractCegarLoop]: Abstraction has 18462 states and 26625 transitions. [2021-11-21 00:37:33,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) [2021-11-21 00:37:33,740 INFO L276 IsEmpty]: Start isEmpty. Operand 18462 states and 26625 transitions. [2021-11-21 00:37:33,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2021-11-21 00:37:33,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:37:33,785 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 11, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:37:33,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:37:33,785 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:37:33,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:37:33,786 INFO L85 PathProgramCache]: Analyzing trace with hash 12905827, now seen corresponding path program 1 times [2021-11-21 00:37:33,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:37:33,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747144653] [2021-11-21 00:37:33,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:37:33,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:37:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:37:35,045 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2021-11-21 00:37:35,045 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:37:35,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747144653] [2021-11-21 00:37:35,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747144653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:37:35,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:37:35,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:37:35,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688936829] [2021-11-21 00:37:35,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:37:35,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:37:35,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:37:35,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:37:35,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:37:35,049 INFO L87 Difference]: Start difference. First operand 18462 states and 26625 transitions. Second operand has 12 states, 11 states have (on average 14.090909090909092) internal successors, (155), 11 states have internal predecessors, (155), 8 states have call successors, (74), 3 states have call predecessors, (74), 6 states have return successors, (71), 9 states have call predecessors, (71), 8 states have call successors, (71) [2021-11-21 00:37:38,918 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:43,746 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:45,762 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:46,797 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:48,153 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:49,365 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:51,380 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:38:46,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:38:46,064 INFO L93 Difference]: Finished difference Result 29114 states and 42917 transitions. [2021-11-21 00:38:46,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-21 00:38:46,064 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 14.090909090909092) internal successors, (155), 11 states have internal predecessors, (155), 8 states have call successors, (74), 3 states have call predecessors, (74), 6 states have return successors, (71), 9 states have call predecessors, (71), 8 states have call successors, (71) Word has length 375 [2021-11-21 00:38:46,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:38:46,279 INFO L225 Difference]: With dead ends: 29114 [2021-11-21 00:38:46,279 INFO L226 Difference]: Without dead ends: 29112 [2021-11-21 00:38:46,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=242, Invalid=880, Unknown=0, NotChecked=0, Total=1122 [2021-11-21 00:38:46,306 INFO L933 BasicCegarLoop]: 3476 mSDtfsCounter, 8999 mSDsluCounter, 17755 mSDsCounter, 0 mSdLazyCounter, 35089 mSolverCounterSat, 9244 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10250 SdHoareTripleChecker+Valid, 18796 SdHoareTripleChecker+Invalid, 44337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 9244 IncrementalHoareTripleChecker+Valid, 35089 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:38:46,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10250 Valid, 18796 Invalid, 44337 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [9244 Valid, 35089 Invalid, 4 Unknown, 0 Unchecked, 68.0s Time] [2021-11-21 00:38:46,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29112 states. [2021-11-21 00:38:48,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29112 to 27088. [2021-11-21 00:38:48,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27088 states, 15342 states have (on average 1.2564202841871985) internal successors, (19276), 16359 states have internal predecessors, (19276), 9029 states have call successors, (9029), 2784 states have call predecessors, (9029), 2716 states have return successors, (10748), 8659 states have call predecessors, (10748), 9029 states have call successors, (10748) [2021-11-21 00:38:48,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27088 states to 27088 states and 39053 transitions. [2021-11-21 00:38:48,410 INFO L78 Accepts]: Start accepts. Automaton has 27088 states and 39053 transitions. Word has length 375 [2021-11-21 00:38:48,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:38:48,412 INFO L470 AbstractCegarLoop]: Abstraction has 27088 states and 39053 transitions. [2021-11-21 00:38:48,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 14.090909090909092) internal successors, (155), 11 states have internal predecessors, (155), 8 states have call successors, (74), 3 states have call predecessors, (74), 6 states have return successors, (71), 9 states have call predecessors, (71), 8 states have call successors, (71) [2021-11-21 00:38:48,412 INFO L276 IsEmpty]: Start isEmpty. Operand 27088 states and 39053 transitions. [2021-11-21 00:38:48,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-11-21 00:38:48,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:38:48,461 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 7, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:38:48,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:38:48,461 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:38:48,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:38:48,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1324992846, now seen corresponding path program 1 times [2021-11-21 00:38:48,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:38:48,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610921562] [2021-11-21 00:38:48,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:38:48,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:38:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:38:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2021-11-21 00:38:49,215 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:38:49,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610921562] [2021-11-21 00:38:49,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610921562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:38:49,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:38:49,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:38:49,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466042916] [2021-11-21 00:38:49,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:38:49,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:38:49,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:38:49,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:38:49,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:38:49,217 INFO L87 Difference]: Start difference. First operand 27088 states and 39053 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-21 00:38:50,936 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:38:52,955 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:38:55,142 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:38:57,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:38:57,992 INFO L93 Difference]: Finished difference Result 45589 states and 66025 transitions. [2021-11-21 00:38:57,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:38:57,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 347 [2021-11-21 00:38:57,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:38:58,298 INFO L225 Difference]: With dead ends: 45589 [2021-11-21 00:38:58,298 INFO L226 Difference]: Without dead ends: 27027 [2021-11-21 00:38:58,383 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 [2021-11-21 00:38:58,384 INFO L933 BasicCegarLoop]: 2584 mSDtfsCounter, 8 mSDsluCounter, 2932 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 5159 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:38:58,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 5159 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 736 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2021-11-21 00:38:58,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27027 states. [2021-11-21 00:39:00,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27027 to 27017. [2021-11-21 00:39:00,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27017 states, 15302 states have (on average 1.2560449614429485) internal successors, (19220), 16313 states have internal predecessors, (19220), 9005 states have call successors, (9005), 2773 states have call predecessors, (9005), 2709 states have return successors, (10724), 8643 states have call predecessors, (10724), 9005 states have call successors, (10724) [2021-11-21 00:39:00,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27017 states to 27017 states and 38949 transitions. [2021-11-21 00:39:00,219 INFO L78 Accepts]: Start accepts. Automaton has 27017 states and 38949 transitions. Word has length 347 [2021-11-21 00:39:00,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:39:00,220 INFO L470 AbstractCegarLoop]: Abstraction has 27017 states and 38949 transitions. [2021-11-21 00:39:00,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-21 00:39:00,221 INFO L276 IsEmpty]: Start isEmpty. Operand 27017 states and 38949 transitions. [2021-11-21 00:39:00,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2021-11-21 00:39:00,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:39:00,530 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 8, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:39:00,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 00:39:00,531 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:39:00,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:39:00,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1712938894, now seen corresponding path program 1 times [2021-11-21 00:39:00,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:39:00,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052264902] [2021-11-21 00:39:00,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:39:00,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:39:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:39:01,034 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2021-11-21 00:39:01,034 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:39:01,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052264902] [2021-11-21 00:39:01,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052264902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:39:01,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:39:01,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:39:01,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053810821] [2021-11-21 00:39:01,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:39:01,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:39:01,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:39:01,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:39:01,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:39:01,039 INFO L87 Difference]: Start difference. First operand 27017 states and 38949 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2021-11-21 00:39:04,349 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:39:06,511 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:39:10,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:39:10,006 INFO L93 Difference]: Finished difference Result 44800 states and 65032 transitions. [2021-11-21 00:39:10,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:39:10,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 401 [2021-11-21 00:39:10,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:39:10,325 INFO L225 Difference]: With dead ends: 44800 [2021-11-21 00:39:10,325 INFO L226 Difference]: Without dead ends: 27769 [2021-11-21 00:39:10,424 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 [2021-11-21 00:39:10,425 INFO L933 BasicCegarLoop]: 2829 mSDtfsCounter, 225 mSDsluCounter, 2999 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 5464 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:39:10,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 5464 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 779 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2021-11-21 00:39:10,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27769 states. [2021-11-21 00:39:12,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27769 to 27018. [2021-11-21 00:39:12,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27018 states, 15303 states have (on average 1.2560282297588707) internal successors, (19221), 16314 states have internal predecessors, (19221), 9005 states have call successors, (9005), 2773 states have call predecessors, (9005), 2709 states have return successors, (10724), 8643 states have call predecessors, (10724), 9005 states have call successors, (10724) [2021-11-21 00:39:12,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27018 states to 27018 states and 38950 transitions. [2021-11-21 00:39:12,374 INFO L78 Accepts]: Start accepts. Automaton has 27018 states and 38950 transitions. Word has length 401 [2021-11-21 00:39:12,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:39:12,375 INFO L470 AbstractCegarLoop]: Abstraction has 27018 states and 38950 transitions. [2021-11-21 00:39:12,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2021-11-21 00:39:12,375 INFO L276 IsEmpty]: Start isEmpty. Operand 27018 states and 38950 transitions. [2021-11-21 00:39:12,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2021-11-21 00:39:12,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:39:12,450 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 17, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:39:12,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 00:39:12,451 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:39:12,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:39:12,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1758621760, now seen corresponding path program 1 times [2021-11-21 00:39:12,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:39:12,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161657715] [2021-11-21 00:39:12,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:39:12,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:39:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:39:13,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1182 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1179 trivial. 0 not checked. [2021-11-21 00:39:13,273 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:39:13,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161657715] [2021-11-21 00:39:13,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161657715] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:39:13,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:39:13,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:39:13,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216193757] [2021-11-21 00:39:13,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:39:13,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:39:13,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:39:13,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:39:13,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:39:13,276 INFO L87 Difference]: Start difference. First operand 27018 states and 38950 transitions. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 5 states have internal predecessors, (188), 3 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (87), 4 states have call predecessors, (87), 3 states have call successors, (87) [2021-11-21 00:39:15,145 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:39:17,170 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:39:19,200 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:39:21,232 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:39:23,569 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:39:30,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:39:30,567 INFO L93 Difference]: Finished difference Result 56664 states and 82696 transitions. [2021-11-21 00:39:30,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:39:30,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 5 states have internal predecessors, (188), 3 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (87), 4 states have call predecessors, (87), 3 states have call successors, (87) Word has length 510 [2021-11-21 00:39:30,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:39:30,766 INFO L225 Difference]: With dead ends: 56664 [2021-11-21 00:39:30,766 INFO L226 Difference]: Without dead ends: 29662 [2021-11-21 00:39:30,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:39:30,861 INFO L933 BasicCegarLoop]: 2831 mSDtfsCounter, 179 mSDsluCounter, 12678 mSDsCounter, 0 mSdLazyCounter, 2014 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 13934 SdHoareTripleChecker+Invalid, 2022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2014 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:39:30,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 13934 Invalid, 2022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2014 Invalid, 4 Unknown, 0 Unchecked, 15.6s Time] [2021-11-21 00:39:30,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29662 states. [2021-11-21 00:39:32,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29662 to 27036. [2021-11-21 00:39:32,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27036 states, 15317 states have (on average 1.255141346216622) internal successors, (19225), 16325 states have internal predecessors, (19225), 9008 states have call successors, (9008), 2773 states have call predecessors, (9008), 2710 states have return successors, (10741), 8650 states have call predecessors, (10741), 9008 states have call successors, (10741) [2021-11-21 00:39:32,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27036 states to 27036 states and 38974 transitions. [2021-11-21 00:39:32,805 INFO L78 Accepts]: Start accepts. Automaton has 27036 states and 38974 transitions. Word has length 510 [2021-11-21 00:39:32,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:39:32,807 INFO L470 AbstractCegarLoop]: Abstraction has 27036 states and 38974 transitions. [2021-11-21 00:39:32,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 5 states have internal predecessors, (188), 3 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (87), 4 states have call predecessors, (87), 3 states have call successors, (87) [2021-11-21 00:39:32,807 INFO L276 IsEmpty]: Start isEmpty. Operand 27036 states and 38974 transitions. [2021-11-21 00:39:32,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2021-11-21 00:39:32,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:39:32,866 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 17, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:39:32,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 00:39:32,866 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:39:32,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:39:32,867 INFO L85 PathProgramCache]: Analyzing trace with hash 689262687, now seen corresponding path program 1 times [2021-11-21 00:39:32,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:39:32,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004672510] [2021-11-21 00:39:32,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:39:32,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:39:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:39:33,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1187 trivial. 0 not checked. [2021-11-21 00:39:33,472 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:39:33,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004672510] [2021-11-21 00:39:33,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004672510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:39:33,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:39:33,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:39:33,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574920585] [2021-11-21 00:39:33,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:39:33,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:39:33,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:39:33,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:39:33,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:39:33,475 INFO L87 Difference]: Start difference. First operand 27036 states and 38974 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (94), 3 states have call predecessors, (94), 2 states have return successors, (91), 3 states have call predecessors, (91), 3 states have call successors, (91) [2021-11-21 00:39:35,959 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:39:38,139 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:39:44,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:39:44,210 INFO L93 Difference]: Finished difference Result 52065 states and 76397 transitions. [2021-11-21 00:39:44,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:39:44,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (94), 3 states have call predecessors, (94), 2 states have return successors, (91), 3 states have call predecessors, (91), 3 states have call successors, (91) Word has length 523 [2021-11-21 00:39:44,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:39:44,394 INFO L225 Difference]: With dead ends: 52065 [2021-11-21 00:39:44,394 INFO L226 Difference]: Without dead ends: 35015 [2021-11-21 00:39:44,482 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 [2021-11-21 00:39:44,482 INFO L933 BasicCegarLoop]: 4928 mSDtfsCounter, 2684 mSDsluCounter, 2848 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 39 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2684 SdHoareTripleChecker+Valid, 7430 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:39:44,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2684 Valid, 7430 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1157 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2021-11-21 00:39:44,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35015 states. [2021-11-21 00:39:46,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35015 to 34989. [2021-11-21 00:39:46,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34989 states, 19796 states have (on average 1.249494847443928) internal successors, (24735), 21090 states have internal predecessors, (24735), 11708 states have call successors, (11708), 3562 states have call predecessors, (11708), 3484 states have return successors, (14121), 11251 states have call predecessors, (14121), 11708 states have call successors, (14121) [2021-11-21 00:39:46,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34989 states to 34989 states and 50564 transitions. [2021-11-21 00:39:46,563 INFO L78 Accepts]: Start accepts. Automaton has 34989 states and 50564 transitions. Word has length 523 [2021-11-21 00:39:46,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:39:46,565 INFO L470 AbstractCegarLoop]: Abstraction has 34989 states and 50564 transitions. [2021-11-21 00:39:46,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (94), 3 states have call predecessors, (94), 2 states have return successors, (91), 3 states have call predecessors, (91), 3 states have call successors, (91) [2021-11-21 00:39:46,566 INFO L276 IsEmpty]: Start isEmpty. Operand 34989 states and 50564 transitions. [2021-11-21 00:39:46,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2021-11-21 00:39:46,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:39:46,853 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 17, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:39:46,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 00:39:46,854 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:39:46,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:39:46,854 INFO L85 PathProgramCache]: Analyzing trace with hash -865615207, now seen corresponding path program 1 times [2021-11-21 00:39:46,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:39:46,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513860074] [2021-11-21 00:39:46,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:39:46,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:39:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:39:47,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1328 trivial. 0 not checked. [2021-11-21 00:39:47,592 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:39:47,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513860074] [2021-11-21 00:39:47,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513860074] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:39:47,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758764753] [2021-11-21 00:39:47,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:39:47,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:39:47,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:39:47,601 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:39:47,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:39:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:39:49,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 8452 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 00:39:49,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:39:50,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 626 proven. 0 refuted. 0 times theorem prover too weak. 707 trivial. 0 not checked. [2021-11-21 00:39:50,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:39:50,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758764753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:39:50,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:39:50,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2021-11-21 00:39:50,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860234086] [2021-11-21 00:39:50,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:39:50,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 00:39:50,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:39:50,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 00:39:50,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:39:50,998 INFO L87 Difference]: Start difference. First operand 34989 states and 50564 transitions. Second operand has 9 states, 6 states have (on average 38.0) internal successors, (228), 9 states have internal predecessors, (228), 5 states have call successors, (110), 2 states have call predecessors, (110), 5 states have return successors, (107), 5 states have call predecessors, (107), 5 states have call successors, (107) [2021-11-21 00:39:53,108 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:39:55,126 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:39:57,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:39:59,179 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:40:01,203 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:40:03,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:40:04,502 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:40:06,521 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:40:09,188 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:40:17,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:40:17,573 INFO L93 Difference]: Finished difference Result 58935 states and 85232 transitions. [2021-11-21 00:40:17,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 00:40:17,576 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 38.0) internal successors, (228), 9 states have internal predecessors, (228), 5 states have call successors, (110), 2 states have call predecessors, (110), 5 states have return successors, (107), 5 states have call predecessors, (107), 5 states have call successors, (107) Word has length 576 [2021-11-21 00:40:17,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:40:17,785 INFO L225 Difference]: With dead ends: 58935 [2021-11-21 00:40:17,785 INFO L226 Difference]: Without dead ends: 35159 [2021-11-21 00:40:17,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2021-11-21 00:40:17,879 INFO L933 BasicCegarLoop]: 2551 mSDtfsCounter, 4 mSDsluCounter, 20312 mSDsCounter, 0 mSdLazyCounter, 3258 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 20325 SdHoareTripleChecker+Invalid, 3266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3258 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:40:17,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 20325 Invalid, 3266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3258 Invalid, 7 Unknown, 0 Unchecked, 24.6s Time] [2021-11-21 00:40:17,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35159 states. [2021-11-21 00:40:19,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35159 to 35125. [2021-11-21 00:40:19,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35125 states, 19881 states have (on average 1.248428147477491) internal successors, (24820), 21158 states have internal predecessors, (24820), 11759 states have call successors, (11759), 3562 states have call predecessors, (11759), 3484 states have return successors, (14172), 11302 states have call predecessors, (14172), 11759 states have call successors, (14172) [2021-11-21 00:40:20,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35125 states to 35125 states and 50751 transitions. [2021-11-21 00:40:20,123 INFO L78 Accepts]: Start accepts. Automaton has 35125 states and 50751 transitions. Word has length 576 [2021-11-21 00:40:20,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:40:20,124 INFO L470 AbstractCegarLoop]: Abstraction has 35125 states and 50751 transitions. [2021-11-21 00:40:20,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 38.0) internal successors, (228), 9 states have internal predecessors, (228), 5 states have call successors, (110), 2 states have call predecessors, (110), 5 states have return successors, (107), 5 states have call predecessors, (107), 5 states have call successors, (107) [2021-11-21 00:40:20,125 INFO L276 IsEmpty]: Start isEmpty. Operand 35125 states and 50751 transitions. [2021-11-21 00:40:20,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2021-11-21 00:40:20,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:40:20,195 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 13, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:40:20,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-21 00:40:20,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-21 00:40:20,397 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:40:20,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:40:20,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1068410545, now seen corresponding path program 1 times [2021-11-21 00:40:20,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:40:20,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338888425] [2021-11-21 00:40:20,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:40:20,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:40:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:40:21,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1117 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2021-11-21 00:40:21,072 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:40:21,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338888425] [2021-11-21 00:40:21,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338888425] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:40:21,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951333423] [2021-11-21 00:40:21,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:40:21,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:40:21,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:40:21,075 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:40:21,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bb64ad-0a22-49a0-be03-ddf0045f3ee7/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:40:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:40:23,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 8891 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:40:23,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:40:25,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1117 backedges. 361 proven. 1 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2021-11-21 00:40:25,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:40:27,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1117 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2021-11-21 00:40:27,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951333423] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:40:27,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [674428199] [2021-11-21 00:40:27,326 INFO L159 IcfgInterpreter]: Started Sifa with 271 locations of interest [2021-11-21 00:40:27,327 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:40:27,341 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:40:27,347 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:40:27,348 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs