./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/bin/utaipan-eEHZpOm5b7/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_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 004fcd1800da3fcc8c5839d85d0662ed24df5100e10ec8a5024be56f561eab28 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:17:03,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:17:03,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:17:03,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:17:03,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:17:03,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:17:03,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:17:03,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:17:03,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:17:03,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:17:03,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:17:03,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:17:03,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:17:03,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:17:03,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:17:03,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:17:03,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:17:03,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:17:03,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:17:03,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:17:03,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:17:03,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:17:03,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:17:03,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:17:03,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:17:03,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:17:03,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:17:03,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:17:03,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:17:03,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:17:03,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:17:03,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:17:03,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:17:03,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:17:03,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:17:03,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:17:03,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:17:03,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:17:03,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:17:03,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:17:03,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:17:03,348 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 20:17:03,397 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:17:03,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:17:03,398 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:17:03,398 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:17:03,399 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:17:03,399 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:17:03,399 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:17:03,400 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:17:03,400 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:17:03,400 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:17:03,401 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:17:03,401 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:17:03,402 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:17:03,402 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:17:03,402 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:17:03,402 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:17:03,403 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:17:03,403 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:17:03,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:17:03,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:17:03,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:17:03,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:17:03,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:17:03,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:17:03,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:17:03,405 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:17:03,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:17:03,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:17:03,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:17:03,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:17:03,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:17:03,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:17:03,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:17:03,408 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:17:03,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:17:03,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:17:03,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:17:03,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:17:03,409 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_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 004fcd1800da3fcc8c5839d85d0662ed24df5100e10ec8a5024be56f561eab28 [2021-11-25 20:17:03,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:17:03,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:17:03,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:17:03,713 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:17:03,713 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:17:03,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2021-11-25 20:17:03,781 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/bin/utaipan-eEHZpOm5b7/data/9bd0c64cb/c0816336d18c486e8bdd2273b0b5a3be/FLAG1ea645c7a [2021-11-25 20:17:04,826 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:17:04,827 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2021-11-25 20:17:04,878 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/bin/utaipan-eEHZpOm5b7/data/9bd0c64cb/c0816336d18c486e8bdd2273b0b5a3be/FLAG1ea645c7a [2021-11-25 20:17:05,177 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/bin/utaipan-eEHZpOm5b7/data/9bd0c64cb/c0816336d18c486e8bdd2273b0b5a3be [2021-11-25 20:17:05,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:17:05,181 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:17:05,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:17:05,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:17:05,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:17:05,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:17:05" (1/1) ... [2021-11-25 20:17:05,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35784487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:05, skipping insertion in model container [2021-11-25 20:17:05,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:17:05" (1/1) ... [2021-11-25 20:17:05,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:17:05,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:17:09,559 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_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[452511,452524] [2021-11-25 20:17:09,562 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_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[452656,452669] [2021-11-25 20:17:09,591 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:17:09,635 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:17:10,175 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_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[452511,452524] [2021-11-25 20:17:10,176 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_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[452656,452669] [2021-11-25 20:17:10,185 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:17:10,528 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:17:10,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:10 WrapperNode [2021-11-25 20:17:10,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:17:10,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:17:10,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:17:10,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:17:10,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:10" (1/1) ... [2021-11-25 20:17:10,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:10" (1/1) ... [2021-11-25 20:17:11,031 INFO L137 Inliner]: procedures = 548, calls = 4413, calls flagged for inlining = 251, calls inlined = 230, statements flattened = 8724 [2021-11-25 20:17:11,033 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:17:11,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:17:11,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:17:11,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:17:11,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:10" (1/1) ... [2021-11-25 20:17:11,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:10" (1/1) ... [2021-11-25 20:17:11,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:10" (1/1) ... [2021-11-25 20:17:11,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:10" (1/1) ... [2021-11-25 20:17:11,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:10" (1/1) ... [2021-11-25 20:17:11,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:10" (1/1) ... [2021-11-25 20:17:11,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:10" (1/1) ... [2021-11-25 20:17:11,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:17:11,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:17:11,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:17:11,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:17:11,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:10" (1/1) ... [2021-11-25 20:17:11,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:17:11,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:17:11,449 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:17:11,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:17:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_122 [2021-11-25 20:17:11,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_122 [2021-11-25 20:17:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 20:17:11,496 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 20:17:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 20:17:11,497 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 20:17:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-25 20:17:11,497 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-25 20:17:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2021-11-25 20:17:11,497 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2021-11-25 20:17:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_nway_reset [2021-11-25 20:17:11,497 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_nway_reset [2021-11-25 20:17:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 20:17:11,498 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 20:17:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_88 [2021-11-25 20:17:11,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_88 [2021-11-25 20:17:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_107 [2021-11-25 20:17:11,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_107 [2021-11-25 20:17:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 20:17:11,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 20:17:11,499 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 20:17:11,499 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 20:17:11,499 INFO L130 BoogieDeclarations]: Found specification of procedure set_8021q_mode [2021-11-25 20:17:11,499 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8021q_mode [2021-11-25 20:17:11,499 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_remove_one [2021-11-25 20:17:11,499 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_remove_one [2021-11-25 20:17:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-25 20:17:11,500 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-25 20:17:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure issue_and_wait [2021-11-25 20:17:11,500 INFO L138 BoogieDeclarations]: Found implementation of procedure issue_and_wait [2021-11-25 20:17:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 20:17:11,500 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 20:17:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-25 20:17:11,500 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-25 20:17:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-25 20:17:11,501 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-25 20:17:11,501 INFO L130 BoogieDeclarations]: Found specification of procedure window_write32 [2021-11-25 20:17:11,501 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write32 [2021-11-25 20:17:11,501 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-25 20:17:11,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-25 20:17:11,502 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 20:17:11,502 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 20:17:11,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_5 [2021-11-25 20:17:11,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_5 [2021-11-25 20:17:11,502 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 20:17:11,502 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 20:17:11,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_window_lock_of_vortex_private [2021-11-25 20:17:11,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_window_lock_of_vortex_private [2021-11-25 20:17:11,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_vortex_private [2021-11-25 20:17:11,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_vortex_private [2021-11-25 20:17:11,504 INFO L130 BoogieDeclarations]: Found specification of procedure window_set [2021-11-25 20:17:11,505 INFO L138 BoogieDeclarations]: Found implementation of procedure window_set [2021-11-25 20:17:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 20:17:11,505 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 20:17:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 20:17:11,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 20:17:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 20:17:11,506 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 20:17:11,506 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-25 20:17:11,506 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-25 20:17:11,507 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-25 20:17:11,507 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-25 20:17:11,507 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-25 20:17:11,507 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-25 20:17:11,507 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 20:17:11,507 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 20:17:11,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 20:17:11,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 20:17:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-11-25 20:17:11,508 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-11-25 20:17:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 20:17:11,508 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 20:17:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_5_2 [2021-11-25 20:17:11,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_5_2 [2021-11-25 20:17:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 20:17:11,509 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 20:17:11,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:17:11,509 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tx_timestamp [2021-11-25 20:17:11,509 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tx_timestamp [2021-11-25 20:17:11,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-25 20:17:11,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-25 20:17:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 20:17:11,510 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 20:17:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_118 [2021-11-25 20:17:11,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_118 [2021-11-25 20:17:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 20:17:11,511 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 20:17:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_114 [2021-11-25 20:17:11,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_114 [2021-11-25 20:17:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 20:17:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_tx_timeout [2021-11-25 20:17:11,513 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_tx_timeout [2021-11-25 20:17:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-25 20:17:11,513 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-25 20:17:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure ioport_map [2021-11-25 20:17:11,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ioport_map [2021-11-25 20:17:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 20:17:11,513 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 20:17:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-25 20:17:11,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-25 20:17:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 20:17:11,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 20:17:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 20:17:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_106 [2021-11-25 20:17:11,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_106 [2021-11-25 20:17:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 20:17:11,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 20:17:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:17:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_interrupt [2021-11-25 20:17:11,516 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_interrupt [2021-11-25 20:17:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-25 20:17:11,518 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-25 20:17:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 20:17:11,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 20:17:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 20:17:11,520 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 20:17:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 20:17:11,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 20:17:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 20:17:11,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 20:17:11,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 20:17:11,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 20:17:11,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-25 20:17:11,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-25 20:17:11,527 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_set_duplex [2021-11-25 20:17:11,527 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_set_duplex [2021-11-25 20:17:11,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_132 [2021-11-25 20:17:11,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_132 [2021-11-25 20:17:11,528 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-11-25 20:17:11,528 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-11-25 20:17:11,528 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-25 20:17:11,528 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-25 20:17:11,528 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_error [2021-11-25 20:17:11,528 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_error [2021-11-25 20:17:11,528 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 20:17:11,528 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 20:17:11,528 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_close [2021-11-25 20:17:11,529 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_close [2021-11-25 20:17:11,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:17:11,529 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2021-11-25 20:17:11,529 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2021-11-25 20:17:11,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-25 20:17:11,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-25 20:17:11,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:17:11,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 20:17:11,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 20:17:11,529 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 20:17:11,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 20:17:11,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:17:11,531 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-25 20:17:11,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-25 20:17:11,531 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:17:11,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:17:11,532 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-25 20:17:11,532 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-25 20:17:11,532 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:17:11,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:17:11,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-25 20:17:11,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-25 20:17:11,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-25 20:17:11,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-25 20:17:11,532 INFO L130 BoogieDeclarations]: Found specification of procedure acpi_set_WOL [2021-11-25 20:17:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure acpi_set_WOL [2021-11-25 20:17:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-25 20:17:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-25 20:17:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure window_write16 [2021-11-25 20:17:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write16 [2021-11-25 20:17:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-25 20:17:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-25 20:17:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 20:17:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 20:17:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure window_read8 [2021-11-25 20:17:11,534 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read8 [2021-11-25 20:17:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-25 20:17:11,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-25 20:17:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure update_stats [2021-11-25 20:17:11,534 INFO L138 BoogieDeclarations]: Found implementation of procedure update_stats [2021-11-25 20:17:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 20:17:11,535 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 20:17:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-25 20:17:11,535 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-25 20:17:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure poll_vortex [2021-11-25 20:17:11,535 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_vortex [2021-11-25 20:17:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 20:17:11,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 20:17:11,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_window_lock_of_vortex_private [2021-11-25 20:17:11,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_window_lock_of_vortex_private [2021-11-25 20:17:11,536 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_check_media [2021-11-25 20:17:11,536 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_check_media [2021-11-25 20:17:11,536 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-11-25 20:17:11,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-11-25 20:17:11,536 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-25 20:17:11,536 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-25 20:17:11,536 INFO L130 BoogieDeclarations]: Found specification of procedure boomerang_rx [2021-11-25 20:17:11,536 INFO L138 BoogieDeclarations]: Found implementation of procedure boomerang_rx [2021-11-25 20:17:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-11-25 20:17:11,537 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-11-25 20:17:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_open [2021-11-25 20:17:11,537 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_open [2021-11-25 20:17:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure dump_tx_ring [2021-11-25 20:17:11,537 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_tx_ring [2021-11-25 20:17:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-25 20:17:11,537 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-25 20:17:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:17:11,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:17:11,538 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_probe1 [2021-11-25 20:17:11,538 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_probe1 [2021-11-25 20:17:11,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 20:17:11,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 20:17:11,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 20:17:11,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 20:17:11,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 20:17:11,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 20:17:11,538 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2021-11-25 20:17:11,539 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2021-11-25 20:17:11,539 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 20:17:11,539 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 20:17:11,539 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 20:17:11,539 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 20:17:11,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-25 20:17:11,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-25 20:17:11,539 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 20:17:11,539 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 20:17:11,539 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-25 20:17:11,540 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-25 20:17:11,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:17:11,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_111 [2021-11-25 20:17:11,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_111 [2021-11-25 20:17:11,540 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-25 20:17:11,540 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-25 20:17:11,540 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 20:17:11,540 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 20:17:11,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:17:11,540 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_suspend [2021-11-25 20:17:11,541 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_suspend [2021-11-25 20:17:11,541 INFO L130 BoogieDeclarations]: Found specification of procedure boomerang_interrupt [2021-11-25 20:17:11,542 INFO L138 BoogieDeclarations]: Found implementation of procedure boomerang_interrupt [2021-11-25 20:17:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:17:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 20:17:11,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 20:17:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure rx_oom_timer [2021-11-25 20:17:11,546 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_oom_timer [2021-11-25 20:17:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-25 20:17:11,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-25 20:17:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 20:17:11,546 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 20:17:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 20:17:11,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 20:17:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 20:17:11,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 20:17:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-25 20:17:11,547 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-25 20:17:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2021-11-25 20:17:11,547 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2021-11-25 20:17:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_resume [2021-11-25 20:17:11,547 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_resume [2021-11-25 20:17:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure pci_restore_state [2021-11-25 20:17:11,548 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_restore_state [2021-11-25 20:17:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-25 20:17:11,548 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-25 20:17:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_rx [2021-11-25 20:17:11,548 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_rx [2021-11-25 20:17:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_105 [2021-11-25 20:17:11,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_105 [2021-11-25 20:17:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 20:17:11,548 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 20:17:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 20:17:11,549 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 20:17:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-25 20:17:11,549 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-25 20:17:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_133 [2021-11-25 20:17:11,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_133 [2021-11-25 20:17:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 20:17:11,549 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 20:17:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_delay [2021-11-25 20:17:11,549 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_delay [2021-11-25 20:17:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_timer [2021-11-25 20:17:11,550 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_timer [2021-11-25 20:17:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:17:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_down [2021-11-25 20:17:11,550 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_down [2021-11-25 20:17:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-11-25 20:17:11,550 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-11-25 20:17:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-25 20:17:11,550 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-25 20:17:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 20:17:11,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 20:17:11,551 INFO L130 BoogieDeclarations]: Found specification of procedure window_write8 [2021-11-25 20:17:11,551 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write8 [2021-11-25 20:17:11,551 INFO L130 BoogieDeclarations]: Found specification of procedure window_read32 [2021-11-25 20:17:11,551 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read32 [2021-11-25 20:17:11,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_10_2 [2021-11-25 20:17:11,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_10_2 [2021-11-25 20:17:11,551 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-25 20:17:11,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-25 20:17:11,551 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32_rep [2021-11-25 20:17:11,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32_rep [2021-11-25 20:17:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-25 20:17:11,552 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-25 20:17:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_up [2021-11-25 20:17:11,552 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_up [2021-11-25 20:17:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure window_read16 [2021-11-25 20:17:11,552 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read16 [2021-11-25 20:17:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 20:17:11,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 20:17:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-25 20:17:11,552 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-25 20:17:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-25 20:17:11,553 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-25 20:17:11,553 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-25 20:17:11,553 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-25 20:17:11,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_vortex_private [2021-11-25 20:17:11,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_vortex_private [2021-11-25 20:17:11,553 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-25 20:17:11,553 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-25 20:17:11,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_112 [2021-11-25 20:17:11,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_112 [2021-11-25 20:17:11,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_113 [2021-11-25 20:17:11,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_113 [2021-11-25 20:17:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:17:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 20:17:11,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 20:17:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-25 20:17:11,554 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-25 20:17:12,753 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:17:12,757 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:17:14,438 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 20:17:20,555 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:17:23,161 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:17:23,161 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 20:17:23,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:17:23 BoogieIcfgContainer [2021-11-25 20:17:23,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:17:23,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:17:23,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:17:23,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:17:23,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:17:05" (1/3) ... [2021-11-25 20:17:23,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69bcba94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:17:23, skipping insertion in model container [2021-11-25 20:17:23,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:10" (2/3) ... [2021-11-25 20:17:23,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69bcba94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:17:23, skipping insertion in model container [2021-11-25 20:17:23,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:17:23" (3/3) ... [2021-11-25 20:17:23,178 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2021-11-25 20:17:23,184 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:17:23,184 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:17:23,258 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:17:23,275 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:17:23,275 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:17:23,355 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) [2021-11-25 20:17:23,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-25 20:17:23,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:23,388 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] [2021-11-25 20:17:23,389 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:23,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:23,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1318744723, now seen corresponding path program 1 times [2021-11-25 20:17:23,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:23,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449136801] [2021-11-25 20:17:23,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:23,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:24,802 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-25 20:17:24,803 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:24,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449136801] [2021-11-25 20:17:24,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449136801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:17:24,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:17:24,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 20:17:24,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633553870] [2021-11-25 20:17:24,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:24,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:17:24,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:24,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:17:24,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:17:24,845 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) [2021-11-25 20:17:27,283 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:17:31,154 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:17:38,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:17:38,736 INFO L93 Difference]: Finished difference Result 4913 states and 7223 transitions. [2021-11-25 20:17:38,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:17:38,740 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 [2021-11-25 20:17:38,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:17:38,798 INFO L225 Difference]: With dead ends: 4913 [2021-11-25 20:17:38,799 INFO L226 Difference]: Without dead ends: 2757 [2021-11-25 20:17:38,826 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 [2021-11-25 20:17:38,833 INFO L933 BasicCegarLoop]: 2936 mSDtfsCounter, 997 mSDsluCounter, 12376 mSDsCounter, 0 mSdLazyCounter, 2496 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 13836 SdHoareTripleChecker+Invalid, 2503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2496 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:17:38,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [998 Valid, 13836 Invalid, 2503 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 2496 Invalid, 1 Unknown, 0 Unchecked, 13.1s Time] [2021-11-25 20:17:38,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2021-11-25 20:17:39,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2750. [2021-11-25 20:17:39,217 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) [2021-11-25 20:17:39,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 3962 transitions. [2021-11-25 20:17:39,261 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 3962 transitions. Word has length 118 [2021-11-25 20:17:39,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:17:39,263 INFO L470 AbstractCegarLoop]: Abstraction has 2750 states and 3962 transitions. [2021-11-25 20:17:39,264 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) [2021-11-25 20:17:39,265 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 3962 transitions. [2021-11-25 20:17:39,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-25 20:17:39,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:39,293 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] [2021-11-25 20:17:39,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:17:39,294 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:39,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:39,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1782148107, now seen corresponding path program 1 times [2021-11-25 20:17:39,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:39,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890441307] [2021-11-25 20:17:39,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:39,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:40,998 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-25 20:17:40,998 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:40,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890441307] [2021-11-25 20:17:40,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890441307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:17:40,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:17:40,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:17:41,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486330830] [2021-11-25 20:17:41,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:41,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:17:41,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:41,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:17:41,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:17:41,008 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) [2021-11-25 20:17:43,223 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:17:45,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:17:50,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:17:50,221 INFO L93 Difference]: Finished difference Result 4779 states and 6939 transitions. [2021-11-25 20:17:50,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:17:50,225 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 [2021-11-25 20:17:50,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:17:50,252 INFO L225 Difference]: With dead ends: 4779 [2021-11-25 20:17:50,252 INFO L226 Difference]: Without dead ends: 2754 [2021-11-25 20:17:50,267 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 [2021-11-25 20:17:50,269 INFO L933 BasicCegarLoop]: 2592 mSDtfsCounter, 6 mSDsluCounter, 8859 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s 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, 8.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:17:50,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 10357 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1472 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2021-11-25 20:17:50,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2021-11-25 20:17:50,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 2754. [2021-11-25 20:17:50,439 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) [2021-11-25 20:17:50,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2754 states to 2754 states and 3965 transitions. [2021-11-25 20:17:50,476 INFO L78 Accepts]: Start accepts. Automaton has 2754 states and 3965 transitions. Word has length 201 [2021-11-25 20:17:50,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:17:50,478 INFO L470 AbstractCegarLoop]: Abstraction has 2754 states and 3965 transitions. [2021-11-25 20:17:50,478 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) [2021-11-25 20:17:50,478 INFO L276 IsEmpty]: Start isEmpty. Operand 2754 states and 3965 transitions. [2021-11-25 20:17:50,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-25 20:17:50,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:50,491 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] [2021-11-25 20:17:50,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:17:50,491 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:50,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:50,492 INFO L85 PathProgramCache]: Analyzing trace with hash -201258096, now seen corresponding path program 1 times [2021-11-25 20:17:50,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:50,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923450498] [2021-11-25 20:17:50,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:50,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:51,736 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-25 20:17:51,736 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:51,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923450498] [2021-11-25 20:17:51,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923450498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:17:51,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:17:51,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:17:51,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943162591] [2021-11-25 20:17:51,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:51,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:17:51,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:51,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:17:51,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:17:51,744 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) [2021-11-25 20:17:53,950 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:17:57,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:17:58,565 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:02,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:18:02,531 INFO L93 Difference]: Finished difference Result 4795 states and 6953 transitions. [2021-11-25 20:18:02,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:18:02,534 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 [2021-11-25 20:18:02,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:18:02,561 INFO L225 Difference]: With dead ends: 4795 [2021-11-25 20:18:02,562 INFO L226 Difference]: Without dead ends: 2766 [2021-11-25 20:18:02,579 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 [2021-11-25 20:18:02,580 INFO L933 BasicCegarLoop]: 2602 mSDtfsCounter, 19 mSDsluCounter, 8881 mSDsCounter, 0 mSdLazyCounter, 1479 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 10384 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1479 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:18:02,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 10384 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1479 Invalid, 2 Unknown, 0 Unchecked, 10.6s Time] [2021-11-25 20:18:02,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2021-11-25 20:18:02,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2758. [2021-11-25 20:18:02,741 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) [2021-11-25 20:18:02,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2758 states to 2758 states and 3968 transitions. [2021-11-25 20:18:02,762 INFO L78 Accepts]: Start accepts. Automaton has 2758 states and 3968 transitions. Word has length 198 [2021-11-25 20:18:02,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:18:02,765 INFO L470 AbstractCegarLoop]: Abstraction has 2758 states and 3968 transitions. [2021-11-25 20:18:02,766 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) [2021-11-25 20:18:02,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2758 states and 3968 transitions. [2021-11-25 20:18:02,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-25 20:18:02,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:18:02,779 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] [2021-11-25 20:18:02,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:18:02,780 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:18:02,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:18:02,781 INFO L85 PathProgramCache]: Analyzing trace with hash 131865195, now seen corresponding path program 1 times [2021-11-25 20:18:02,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:18:02,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370479349] [2021-11-25 20:18:02,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:18:02,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:18:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:18:03,261 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-11-25 20:18:03,261 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:18:03,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370479349] [2021-11-25 20:18:03,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370479349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:18:03,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:18:03,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:18:03,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43714824] [2021-11-25 20:18:03,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:18:03,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:18:03,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:18:03,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:18:03,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:18:03,264 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) [2021-11-25 20:18:05,537 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:09,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:18:09,162 INFO L93 Difference]: Finished difference Result 6671 states and 9535 transitions. [2021-11-25 20:18:09,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:18:09,165 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 [2021-11-25 20:18:09,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:18:09,202 INFO L225 Difference]: With dead ends: 6671 [2021-11-25 20:18:09,203 INFO L226 Difference]: Without dead ends: 4071 [2021-11-25 20:18:09,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:18:09,221 INFO L933 BasicCegarLoop]: 3116 mSDtfsCounter, 2442 mSDsluCounter, 2359 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2443 SdHoareTripleChecker+Valid, 5186 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:18:09,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2443 Valid, 5186 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 668 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2021-11-25 20:18:09,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2021-11-25 20:18:09,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 4069. [2021-11-25 20:18:09,459 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) [2021-11-25 20:18:09,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4069 states to 4069 states and 5812 transitions. [2021-11-25 20:18:09,491 INFO L78 Accepts]: Start accepts. Automaton has 4069 states and 5812 transitions. Word has length 204 [2021-11-25 20:18:09,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:18:09,491 INFO L470 AbstractCegarLoop]: Abstraction has 4069 states and 5812 transitions. [2021-11-25 20:18:09,492 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) [2021-11-25 20:18:09,493 INFO L276 IsEmpty]: Start isEmpty. Operand 4069 states and 5812 transitions. [2021-11-25 20:18:09,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-11-25 20:18:09,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:18:09,511 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] [2021-11-25 20:18:09,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:18:09,512 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:18:09,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:18:09,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1114395318, now seen corresponding path program 1 times [2021-11-25 20:18:09,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:18:09,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82831919] [2021-11-25 20:18:09,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:18:09,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:18:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:18:10,830 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2021-11-25 20:18:10,831 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:18:10,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82831919] [2021-11-25 20:18:10,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82831919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:18:10,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:18:10,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 20:18:10,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515170476] [2021-11-25 20:18:10,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:18:10,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:18:10,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:18:10,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:18:10,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:18:10,834 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) [2021-11-25 20:18:15,592 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:17,616 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:19,641 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:23,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:25,685 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:39,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:41,191 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:47,875 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:59,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:18:59,740 INFO L93 Difference]: Finished difference Result 8130 states and 11680 transitions. [2021-11-25 20:18:59,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-25 20:18:59,741 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 [2021-11-25 20:18:59,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:18:59,807 INFO L225 Difference]: With dead ends: 8130 [2021-11-25 20:18:59,807 INFO L226 Difference]: Without dead ends: 8128 [2021-11-25 20:18:59,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2021-11-25 20:18:59,813 INFO L933 BasicCegarLoop]: 2965 mSDtfsCounter, 5444 mSDsluCounter, 12841 mSDsCounter, 0 mSdLazyCounter, 17531 mSolverCounterSat, 3963 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6216 SdHoareTripleChecker+Valid, 14118 SdHoareTripleChecker+Invalid, 21499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3963 IncrementalHoareTripleChecker+Valid, 17531 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:18:59,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6216 Valid, 14118 Invalid, 21499 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3963 Valid, 17531 Invalid, 5 Unknown, 0 Unchecked, 47.4s Time] [2021-11-25 20:18:59,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8128 states. [2021-11-25 20:19:00,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8128 to 7799. [2021-11-25 20:19:00,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7799 states, 4396 states have (on average 1.268653321201092) internal successors, (5577), 4685 states have internal predecessors, (5577), 2666 states have call successors, (2666), 759 states have call predecessors, (2666), 736 states have return successors, (2907), 2566 states have call predecessors, (2907), 2666 states have call successors, (2907) [2021-11-25 20:19:00,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7799 states to 7799 states and 11150 transitions. [2021-11-25 20:19:00,416 INFO L78 Accepts]: Start accepts. Automaton has 7799 states and 11150 transitions. Word has length 320 [2021-11-25 20:19:00,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:00,417 INFO L470 AbstractCegarLoop]: Abstraction has 7799 states and 11150 transitions. [2021-11-25 20:19:00,418 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) [2021-11-25 20:19:00,418 INFO L276 IsEmpty]: Start isEmpty. Operand 7799 states and 11150 transitions. [2021-11-25 20:19:00,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2021-11-25 20:19:00,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:00,456 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] [2021-11-25 20:19:00,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:19:00,457 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:00,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:00,458 INFO L85 PathProgramCache]: Analyzing trace with hash 807845533, now seen corresponding path program 1 times [2021-11-25 20:19:00,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:00,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935041195] [2021-11-25 20:19:00,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:00,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:00,950 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2021-11-25 20:19:00,951 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:00,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935041195] [2021-11-25 20:19:00,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935041195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:00,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:00,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:19:00,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403861743] [2021-11-25 20:19:00,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:00,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:19:00,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:00,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:19:00,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:19:00,955 INFO L87 Difference]: Start difference. First operand 7799 states and 11150 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) [2021-11-25 20:19:03,600 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:05,992 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:14,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:14,155 INFO L93 Difference]: Finished difference Result 26179 states and 38105 transitions. [2021-11-25 20:19:14,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:19:14,156 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 [2021-11-25 20:19:14,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:14,286 INFO L225 Difference]: With dead ends: 26179 [2021-11-25 20:19:14,287 INFO L226 Difference]: Without dead ends: 18396 [2021-11-25 20:19:14,337 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 [2021-11-25 20:19:14,338 INFO L933 BasicCegarLoop]: 5416 mSDtfsCounter, 4960 mSDsluCounter, 5951 mSDsCounter, 0 mSdLazyCounter, 4485 mSolverCounterSat, 70 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4960 SdHoareTripleChecker+Valid, 10416 SdHoareTripleChecker+Invalid, 4557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 4485 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:14,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4960 Valid, 10416 Invalid, 4557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 4485 Invalid, 2 Unknown, 0 Unchecked, 12.3s Time] [2021-11-25 20:19:14,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18396 states. [2021-11-25 20:19:15,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18396 to 18388. [2021-11-25 20:19:15,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18388 states, 10389 states have (on average 1.265088073924343) internal successors, (13143), 11094 states have internal predecessors, (13143), 6198 states have call successors, (6198), 1833 states have call predecessors, (6198), 1800 states have return successors, (7175), 5979 states have call predecessors, (7175), 6198 states have call successors, (7175) [2021-11-25 20:19:15,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18388 states to 18388 states and 26516 transitions. [2021-11-25 20:19:15,790 INFO L78 Accepts]: Start accepts. Automaton has 18388 states and 26516 transitions. Word has length 425 [2021-11-25 20:19:15,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:15,792 INFO L470 AbstractCegarLoop]: Abstraction has 18388 states and 26516 transitions. [2021-11-25 20:19:15,793 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) [2021-11-25 20:19:15,793 INFO L276 IsEmpty]: Start isEmpty. Operand 18388 states and 26516 transitions. [2021-11-25 20:19:15,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2021-11-25 20:19:15,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:15,833 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] [2021-11-25 20:19:15,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:19:15,834 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:15,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:15,834 INFO L85 PathProgramCache]: Analyzing trace with hash -598718326, now seen corresponding path program 1 times [2021-11-25 20:19:15,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:15,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897005994] [2021-11-25 20:19:15,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:15,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:16,190 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2021-11-25 20:19:16,190 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:16,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897005994] [2021-11-25 20:19:16,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897005994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:16,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:16,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:19:16,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547588628] [2021-11-25 20:19:16,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:16,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:19:16,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:16,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:19:16,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:19:16,196 INFO L87 Difference]: Start difference. First operand 18388 states and 26516 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) [2021-11-25 20:19:18,526 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:21,325 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:23,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:23,624 INFO L93 Difference]: Finished difference Result 31727 states and 45934 transitions. [2021-11-25 20:19:23,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:19:23,627 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 [2021-11-25 20:19:23,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:23,739 INFO L225 Difference]: With dead ends: 31727 [2021-11-25 20:19:23,739 INFO L226 Difference]: Without dead ends: 18586 [2021-11-25 20:19:23,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:19:23,800 INFO L933 BasicCegarLoop]: 2599 mSDtfsCounter, 34 mSDsluCounter, 2920 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s 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, 6.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:23,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 5155 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 737 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2021-11-25 20:19:23,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18586 states. [2021-11-25 20:19:25,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18586 to 18526. [2021-11-25 20:19:25,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18526 states, 10468 states have (on average 1.2667176155903705) internal successors, (13260), 11183 states have internal predecessors, (13260), 6257 states have call successors, (6257), 1833 states have call predecessors, (6257), 1800 states have return successors, (7236), 6033 states have call predecessors, (7236), 6257 states have call successors, (7236) [2021-11-25 20:19:25,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18526 states to 18526 states and 26753 transitions. [2021-11-25 20:19:25,277 INFO L78 Accepts]: Start accepts. Automaton has 18526 states and 26753 transitions. Word has length 366 [2021-11-25 20:19:25,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:25,278 INFO L470 AbstractCegarLoop]: Abstraction has 18526 states and 26753 transitions. [2021-11-25 20:19:25,279 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) [2021-11-25 20:19:25,279 INFO L276 IsEmpty]: Start isEmpty. Operand 18526 states and 26753 transitions. [2021-11-25 20:19:25,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2021-11-25 20:19:25,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:25,322 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] [2021-11-25 20:19:25,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 20:19:25,322 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:25,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:25,324 INFO L85 PathProgramCache]: Analyzing trace with hash 12905827, now seen corresponding path program 1 times [2021-11-25 20:19:25,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:25,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91314618] [2021-11-25 20:19:25,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:25,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:26,413 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2021-11-25 20:19:26,413 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:26,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91314618] [2021-11-25 20:19:26,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91314618] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:26,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:26,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:19:26,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125073267] [2021-11-25 20:19:26,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:26,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 20:19:26,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:26,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 20:19:26,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:19:26,416 INFO L87 Difference]: Start difference. First operand 18526 states and 26753 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) [2021-11-25 20:19:30,060 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:32,536 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:35,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:37,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:39,207 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:41,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:27,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:20:27,986 INFO L93 Difference]: Finished difference Result 34924 states and 51394 transitions. [2021-11-25 20:20:27,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-25 20:20:27,986 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 [2021-11-25 20:20:27,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:20:28,173 INFO L225 Difference]: With dead ends: 34924 [2021-11-25 20:20:28,173 INFO L226 Difference]: Without dead ends: 34922 [2021-11-25 20:20:28,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=242, Invalid=880, Unknown=0, NotChecked=0, Total=1122 [2021-11-25 20:20:28,195 INFO L933 BasicCegarLoop]: 3478 mSDtfsCounter, 9367 mSDsluCounter, 17433 mSDsCounter, 0 mSdLazyCounter, 33686 mSolverCounterSat, 9428 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10618 SdHoareTripleChecker+Valid, 18538 SdHoareTripleChecker+Invalid, 43117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 9428 IncrementalHoareTripleChecker+Valid, 33686 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:20:28,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10618 Valid, 18538 Invalid, 43117 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [9428 Valid, 33686 Invalid, 3 Unknown, 0 Unchecked, 58.6s Time] [2021-11-25 20:20:28,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34922 states. [2021-11-25 20:20:30,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34922 to 32600. [2021-11-25 20:20:30,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32600 states, 18405 states have (on average 1.2547677261613692) internal successors, (23094), 19608 states have internal predecessors, (23094), 10836 states have call successors, (10836), 3499 states have call predecessors, (10836), 3358 states have return successors, (13000), 10346 states have call predecessors, (13000), 10836 states have call successors, (13000) [2021-11-25 20:20:30,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32600 states to 32600 states and 46930 transitions. [2021-11-25 20:20:30,675 INFO L78 Accepts]: Start accepts. Automaton has 32600 states and 46930 transitions. Word has length 375 [2021-11-25 20:20:30,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:20:30,676 INFO L470 AbstractCegarLoop]: Abstraction has 32600 states and 46930 transitions. [2021-11-25 20:20:30,676 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) [2021-11-25 20:20:30,676 INFO L276 IsEmpty]: Start isEmpty. Operand 32600 states and 46930 transitions. [2021-11-25 20:20:30,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-11-25 20:20:30,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:20:30,749 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] [2021-11-25 20:20:30,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 20:20:30,749 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:20:30,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:20:30,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1324992846, now seen corresponding path program 1 times [2021-11-25 20:20:30,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:20:30,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848399156] [2021-11-25 20:20:30,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:20:30,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:20:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:20:31,464 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2021-11-25 20:20:31,465 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:20:31,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848399156] [2021-11-25 20:20:31,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848399156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:20:31,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:20:31,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:20:31,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979812680] [2021-11-25 20:20:31,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:20:31,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:20:31,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:20:31,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:20:31,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:20:31,468 INFO L87 Difference]: Start difference. First operand 32600 states and 46930 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) [2021-11-25 20:20:33,816 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:35,081 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:38,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:20:38,482 INFO L93 Difference]: Finished difference Result 56656 states and 81846 transitions. [2021-11-25 20:20:38,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:20:38,485 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 [2021-11-25 20:20:38,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:20:38,676 INFO L225 Difference]: With dead ends: 56656 [2021-11-25 20:20:38,676 INFO L226 Difference]: Without dead ends: 32537 [2021-11-25 20:20:38,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:20:38,989 INFO L933 BasicCegarLoop]: 2584 mSDtfsCounter, 8 mSDsluCounter, 2931 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 5159 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:20:38,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 5159 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 736 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2021-11-25 20:20:39,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32537 states. [2021-11-25 20:20:40,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32537 to 32527. [2021-11-25 20:20:40,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32527 states, 18364 states have (on average 1.2544652581137008) internal successors, (23037), 19561 states have internal predecessors, (23037), 10812 states have call successors, (10812), 3487 states have call predecessors, (10812), 3350 states have return successors, (12976), 10330 states have call predecessors, (12976), 10812 states have call successors, (12976) [2021-11-25 20:20:41,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32527 states to 32527 states and 46825 transitions. [2021-11-25 20:20:41,103 INFO L78 Accepts]: Start accepts. Automaton has 32527 states and 46825 transitions. Word has length 347 [2021-11-25 20:20:41,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:20:41,104 INFO L470 AbstractCegarLoop]: Abstraction has 32527 states and 46825 transitions. [2021-11-25 20:20:41,104 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) [2021-11-25 20:20:41,105 INFO L276 IsEmpty]: Start isEmpty. Operand 32527 states and 46825 transitions. [2021-11-25 20:20:41,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2021-11-25 20:20:41,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:20:41,170 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] [2021-11-25 20:20:41,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 20:20:41,171 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:20:41,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:20:41,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1712938894, now seen corresponding path program 1 times [2021-11-25 20:20:41,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:20:41,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109369947] [2021-11-25 20:20:41,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:20:41,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:20:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:20:41,927 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2021-11-25 20:20:41,927 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:20:41,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109369947] [2021-11-25 20:20:41,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109369947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:20:41,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:20:41,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:20:41,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105180017] [2021-11-25 20:20:41,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:20:41,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:20:41,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:20:41,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:20:41,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:20:41,930 INFO L87 Difference]: Start difference. First operand 32527 states and 46825 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) [2021-11-25 20:20:44,390 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:48,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:20:48,076 INFO L93 Difference]: Finished difference Result 52883 states and 76508 transitions. [2021-11-25 20:20:48,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:20:48,079 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 [2021-11-25 20:20:48,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:20:48,397 INFO L225 Difference]: With dead ends: 52883 [2021-11-25 20:20:48,397 INFO L226 Difference]: Without dead ends: 33279 [2021-11-25 20:20:48,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:20:48,464 INFO L933 BasicCegarLoop]: 2768 mSDtfsCounter, 225 mSDsluCounter, 2978 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 5382 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:20:48,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 5382 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 746 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-11-25 20:20:48,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33279 states. [2021-11-25 20:20:50,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33279 to 32528. [2021-11-25 20:20:50,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32528 states, 18365 states have (on average 1.2544514021236046) internal successors, (23038), 19562 states have internal predecessors, (23038), 10812 states have call successors, (10812), 3487 states have call predecessors, (10812), 3350 states have return successors, (12976), 10330 states have call predecessors, (12976), 10812 states have call successors, (12976) [2021-11-25 20:20:50,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32528 states to 32528 states and 46826 transitions. [2021-11-25 20:20:50,689 INFO L78 Accepts]: Start accepts. Automaton has 32528 states and 46826 transitions. Word has length 401 [2021-11-25 20:20:50,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:20:50,690 INFO L470 AbstractCegarLoop]: Abstraction has 32528 states and 46826 transitions. [2021-11-25 20:20:50,690 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) [2021-11-25 20:20:50,690 INFO L276 IsEmpty]: Start isEmpty. Operand 32528 states and 46826 transitions. [2021-11-25 20:20:50,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2021-11-25 20:20:50,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:20:50,770 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] [2021-11-25 20:20:50,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 20:20:50,771 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:20:50,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:20:50,772 INFO L85 PathProgramCache]: Analyzing trace with hash 2031428328, now seen corresponding path program 1 times [2021-11-25 20:20:50,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:20:50,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975519622] [2021-11-25 20:20:50,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:20:50,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:20:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:20:51,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1330 trivial. 0 not checked. [2021-11-25 20:20:51,389 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:20:51,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975519622] [2021-11-25 20:20:51,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975519622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:20:51,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:20:51,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 20:20:51,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919681659] [2021-11-25 20:20:51,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:20:51,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:20:51,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:20:51,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:20:51,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:20:51,393 INFO L87 Difference]: Start difference. First operand 32528 states and 46826 transitions. Second operand has 6 states, 6 states have (on average 35.0) internal successors, (210), 5 states have internal predecessors, (210), 3 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (100), 4 states have call predecessors, (100), 3 states have call successors, (100) [2021-11-25 20:20:53,318 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:55,339 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:57,364 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:59,390 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:01,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:02,951 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:08,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:08,685 INFO L93 Difference]: Finished difference Result 68058 states and 99206 transitions. [2021-11-25 20:21:08,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:21:08,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 35.0) internal successors, (210), 5 states have internal predecessors, (210), 3 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (100), 4 states have call predecessors, (100), 3 states have call successors, (100) Word has length 567 [2021-11-25 20:21:08,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:08,851 INFO L225 Difference]: With dead ends: 68058 [2021-11-25 20:21:08,851 INFO L226 Difference]: Without dead ends: 35546 [2021-11-25 20:21:08,947 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 [2021-11-25 20:21:08,948 INFO L933 BasicCegarLoop]: 2832 mSDtfsCounter, 397 mSDsluCounter, 12366 mSDsCounter, 0 mSdLazyCounter, 1953 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 13685 SdHoareTripleChecker+Invalid, 1960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1953 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:08,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [576 Valid, 13685 Invalid, 1960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1953 Invalid, 3 Unknown, 0 Unchecked, 15.4s Time] [2021-11-25 20:21:08,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35546 states. [2021-11-25 20:21:10,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35546 to 32546. [2021-11-25 20:21:10,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32546 states, 18379 states have (on average 1.253604657489526) internal successors, (23040), 19573 states have internal predecessors, (23040), 10815 states have call successors, (10815), 3487 states have call predecessors, (10815), 3351 states have return successors, (12995), 10337 states have call predecessors, (12995), 10815 states have call successors, (12995) [2021-11-25 20:21:10,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32546 states to 32546 states and 46850 transitions. [2021-11-25 20:21:10,857 INFO L78 Accepts]: Start accepts. Automaton has 32546 states and 46850 transitions. Word has length 567 [2021-11-25 20:21:10,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:10,858 INFO L470 AbstractCegarLoop]: Abstraction has 32546 states and 46850 transitions. [2021-11-25 20:21:10,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.0) internal successors, (210), 5 states have internal predecessors, (210), 3 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (100), 4 states have call predecessors, (100), 3 states have call successors, (100) [2021-11-25 20:21:10,859 INFO L276 IsEmpty]: Start isEmpty. Operand 32546 states and 46850 transitions. [2021-11-25 20:21:10,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2021-11-25 20:21:10,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:10,934 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] [2021-11-25 20:21:10,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 20:21:10,934 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:21:10,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:10,935 INFO L85 PathProgramCache]: Analyzing trace with hash -865615207, now seen corresponding path program 1 times [2021-11-25 20:21:10,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:10,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269987606] [2021-11-25 20:21:10,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:10,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:11,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1328 trivial. 0 not checked. [2021-11-25 20:21:11,984 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:11,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269987606] [2021-11-25 20:21:11,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269987606] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:21:11,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229442863] [2021-11-25 20:21:11,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:11,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:21:11,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:21:11,988 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:21:12,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:21:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:14,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 8858 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 20:21:14,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:21:15,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 626 proven. 0 refuted. 0 times theorem prover too weak. 707 trivial. 0 not checked. [2021-11-25 20:21:15,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:21:15,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229442863] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:15,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:21:15,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2021-11-25 20:21:15,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061389485] [2021-11-25 20:21:15,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:15,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 20:21:15,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:15,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 20:21:15,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-11-25 20:21:15,499 INFO L87 Difference]: Start difference. First operand 32546 states and 46850 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) [2021-11-25 20:21:17,683 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:19,707 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:21,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:23,750 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:25,771 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:27,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:29,818 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:31,840 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:34,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:37,972 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:39,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:41,090 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:49,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:49,481 INFO L93 Difference]: Finished difference Result 56257 states and 81059 transitions. [2021-11-25 20:21:49,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 20:21:49,484 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 [2021-11-25 20:21:49,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:49,652 INFO L225 Difference]: With dead ends: 56257 [2021-11-25 20:21:49,653 INFO L226 Difference]: Without dead ends: 32706 [2021-11-25 20:21:49,746 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 [2021-11-25 20:21:49,747 INFO L933 BasicCegarLoop]: 2551 mSDtfsCounter, 4 mSDsluCounter, 20319 mSDsCounter, 0 mSdLazyCounter, 3264 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 20325 SdHoareTripleChecker+Invalid, 3273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3264 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:49,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 20325 Invalid, 3273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3264 Invalid, 8 Unknown, 0 Unchecked, 32.3s Time] [2021-11-25 20:21:49,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32706 states. [2021-11-25 20:21:51,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32706 to 32674. [2021-11-25 20:21:51,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32674 states, 18459 states have (on average 1.2525055528468498) internal successors, (23120), 19637 states have internal predecessors, (23120), 10863 states have call successors, (10863), 3487 states have call predecessors, (10863), 3351 states have return successors, (13043), 10385 states have call predecessors, (13043), 10863 states have call successors, (13043) [2021-11-25 20:21:51,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32674 states to 32674 states and 47026 transitions. [2021-11-25 20:21:51,619 INFO L78 Accepts]: Start accepts. Automaton has 32674 states and 47026 transitions. Word has length 576 [2021-11-25 20:21:51,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:51,620 INFO L470 AbstractCegarLoop]: Abstraction has 32674 states and 47026 transitions. [2021-11-25 20:21:51,620 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) [2021-11-25 20:21:51,620 INFO L276 IsEmpty]: Start isEmpty. Operand 32674 states and 47026 transitions. [2021-11-25 20:21:51,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2021-11-25 20:21:51,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:51,691 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] [2021-11-25 20:21:51,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:21:51,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-25 20:21:51,908 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:21:51,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:51,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1068410545, now seen corresponding path program 1 times [2021-11-25 20:21:51,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:51,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059425403] [2021-11-25 20:21:51,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:51,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1117 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2021-11-25 20:21:52,599 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:52,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059425403] [2021-11-25 20:21:52,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059425403] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:21:52,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586922958] [2021-11-25 20:21:52,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:52,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:21:52,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:21:52,601 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:21:52,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c346ca36-14e4-4af2-98e6-5d3ab6c7c972/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:21:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:55,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 9621 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:21:55,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:21:56,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1117 backedges. 361 proven. 1 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2021-11-25 20:21:56,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:21:57,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1117 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2021-11-25 20:21:57,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586922958] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:21:57,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1702929835] [2021-11-25 20:21:57,742 INFO L159 IcfgInterpreter]: Started Sifa with 271 locations of interest [2021-11-25 20:21:57,742 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:21:57,748 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:21:57,753 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:21:57,754 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:23:30,117 WARN L227 SmtUtils]: Spent 5.77s on a formula simplification. DAG size of input: 7349 DAG size of output: 7199 (called from [L 211] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2021-11-25 20:23:45,673 WARN L227 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 7349 DAG size of output: 7199 (called from [L 211] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)