./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f91ed46b-8d15-4d27-85a7-d4a4010c7278/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f91ed46b-8d15-4d27-85a7-d4a4010c7278/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f91ed46b-8d15-4d27-85a7-d4a4010c7278/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f91ed46b-8d15-4d27-85a7-d4a4010c7278/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f91ed46b-8d15-4d27-85a7-d4a4010c7278/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f91ed46b-8d15-4d27-85a7-d4a4010c7278/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 992a1e8d90338cdabe7a076eea5104d9629c0e7f956adc14aa39d01d99d3f218 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:00:30,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:00:30,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:00:30,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:00:30,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:00:30,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:00:30,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:00:30,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:00:30,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:00:30,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:00:30,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:00:30,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:00:30,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:00:30,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:00:30,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:00:30,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:00:30,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:00:30,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:00:30,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:00:30,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:00:30,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:00:30,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:00:30,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:00:30,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:00:30,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:00:30,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:00:30,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:00:30,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:00:30,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:00:30,935 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:00:30,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:00:30,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:00:30,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:00:30,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:00:30,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:00:30,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:00:30,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:00:30,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:00:30,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:00:30,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:00:30,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:00:30,948 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f91ed46b-8d15-4d27-85a7-d4a4010c7278/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:00:31,004 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:00:31,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:00:31,006 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:00:31,006 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:00:31,016 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:00:31,016 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:00:31,016 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:00:31,017 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:00:31,017 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:00:31,018 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:00:31,019 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:00:31,019 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:00:31,020 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:00:31,020 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:00:31,020 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:00:31,021 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:00:31,021 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:00:31,021 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:00:31,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:00:31,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:00:31,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:00:31,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:00:31,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:00:31,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:00:31,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:00:31,024 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:00:31,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:00:31,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:00:31,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:00:31,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:00:31,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:00:31,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:00:31,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:00:31,027 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:00:31,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:00:31,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:00:31,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:00:31,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:00:31,029 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_f91ed46b-8d15-4d27-85a7-d4a4010c7278/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f91ed46b-8d15-4d27-85a7-d4a4010c7278/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 992a1e8d90338cdabe7a076eea5104d9629c0e7f956adc14aa39d01d99d3f218 [2021-11-21 01:00:31,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:00:31,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:00:31,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:00:31,404 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:00:31,405 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:00:31,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f91ed46b-8d15-4d27-85a7-d4a4010c7278/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-21 01:00:31,508 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f91ed46b-8d15-4d27-85a7-d4a4010c7278/bin/utaipan-TEXQjIfE4P/data/932ada3c1/0064fcf1ab074a0d9f7a9793417bef87/FLAGc6c2668ce [2021-11-21 01:00:32,719 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:00:32,721 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f91ed46b-8d15-4d27-85a7-d4a4010c7278/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-21 01:00:32,825 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f91ed46b-8d15-4d27-85a7-d4a4010c7278/bin/utaipan-TEXQjIfE4P/data/932ada3c1/0064fcf1ab074a0d9f7a9793417bef87/FLAGc6c2668ce [2021-11-21 01:00:32,910 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f91ed46b-8d15-4d27-85a7-d4a4010c7278/bin/utaipan-TEXQjIfE4P/data/932ada3c1/0064fcf1ab074a0d9f7a9793417bef87 [2021-11-21 01:00:32,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:00:32,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:00:32,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:00:32,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:00:32,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:00:32,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:00:32" (1/1) ... [2021-11-21 01:00:32,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@277d5571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:32, skipping insertion in model container [2021-11-21 01:00:32,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:00:32" (1/1) ... [2021-11-21 01:00:32,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:00:33,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:00:39,003 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_f91ed46b-8d15-4d27-85a7-d4a4010c7278/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[492962,492975] [2021-11-21 01:00:39,006 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_f91ed46b-8d15-4d27-85a7-d4a4010c7278/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[493107,493120] [2021-11-21 01:00:39,039 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:00:39,098 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:00:39,858 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_f91ed46b-8d15-4d27-85a7-d4a4010c7278/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[492962,492975] [2021-11-21 01:00:39,859 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_f91ed46b-8d15-4d27-85a7-d4a4010c7278/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[493107,493120] [2021-11-21 01:00:39,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:00:40,336 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:00:40,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:40 WrapperNode [2021-11-21 01:00:40,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:00:40,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:00:40,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:00:40,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:00:40,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:40" (1/1) ... [2021-11-21 01:00:40,607 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:40" (1/1) ... [2021-11-21 01:00:41,103 INFO L137 Inliner]: procedures = 567, calls = 5407, calls flagged for inlining = 289, calls inlined = 263, statements flattened = 11461 [2021-11-21 01:00:41,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:00:41,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:00:41,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:00:41,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:00:41,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:40" (1/1) ... [2021-11-21 01:00:41,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:40" (1/1) ... [2021-11-21 01:00:41,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:40" (1/1) ... [2021-11-21 01:00:41,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:40" (1/1) ... [2021-11-21 01:00:41,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:40" (1/1) ... [2021-11-21 01:00:41,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:40" (1/1) ... [2021-11-21 01:00:41,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:40" (1/1) ... [2021-11-21 01:00:41,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:00:41,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:00:41,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:00:41,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:00:41,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:40" (1/1) ... [2021-11-21 01:00:41,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:00:41,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f91ed46b-8d15-4d27-85a7-d4a4010c7278/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:00:41,805 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f91ed46b-8d15-4d27-85a7-d4a4010c7278/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:00:41,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f91ed46b-8d15-4d27-85a7-d4a4010c7278/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:00:41,873 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_up [2021-11-21 01:00:41,873 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_up [2021-11-21 01:00:41,873 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_media_task [2021-11-21 01:00:41,874 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_media_task [2021-11-21 01:00:41,874 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-21 01:00:41,874 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-21 01:00:41,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:00:41,874 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:00:41,875 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-21 01:00:41,875 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-21 01:00:41,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_84 [2021-11-21 01:00:41,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_84 [2021-11-21 01:00:41,875 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 01:00:41,876 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 01:00:41,876 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_select_media [2021-11-21 01:00:41,876 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_select_media [2021-11-21 01:00:41,876 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit_le [2021-11-21 01:00:41,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit_le [2021-11-21 01:00:41,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:00:41,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:00:41,877 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-21 01:00:41,877 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-21 01:00:41,878 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 01:00:41,878 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 01:00:41,878 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-21 01:00:41,878 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-21 01:00:41,878 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 01:00:41,879 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 01:00:41,879 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-21 01:00:41,880 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-21 01:00:41,880 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-21 01:00:41,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-21 01:00:41,880 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-21 01:00:41,880 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-21 01:00:41,881 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2021-11-21 01:00:41,881 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2021-11-21 01:00:41,881 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 01:00:41,882 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 01:00:41,882 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 01:00:41,882 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 01:00:41,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:00:41,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:00:41,883 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_do_nway [2021-11-21 01:00:41,883 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_do_nway [2021-11-21 01:00:41,883 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 01:00:41,884 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 01:00:41,884 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-21 01:00:41,885 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-21 01:00:41,886 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 01:00:41,886 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 01:00:41,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:00:41,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:00:41,887 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 01:00:41,887 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 01:00:41,887 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-21 01:00:41,888 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-21 01:00:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:00:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_wolopts [2021-11-21 01:00:41,889 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_wolopts [2021-11-21 01:00:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_resume [2021-11-21 01:00:41,889 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_resume [2021-11-21 01:00:41,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-21 01:00:41,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-21 01:00:41,890 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_interrupt [2021-11-21 01:00:41,890 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_interrupt [2021-11-21 01:00:41,890 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 01:00:41,891 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 01:00:41,891 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___3 [2021-11-21 01:00:41,891 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___3 [2021-11-21 01:00:41,891 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___1 [2021-11-21 01:00:41,892 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___1 [2021-11-21 01:00:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_media_task [2021-11-21 01:00:41,893 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_media_task [2021-11-21 01:00:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:00:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___5 [2021-11-21 01:00:41,894 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___5 [2021-11-21 01:00:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___4 [2021-11-21 01:00:41,894 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___4 [2021-11-21 01:00:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 01:00:41,895 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 01:00:41,895 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 01:00:41,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 01:00:41,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:00:41,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:00:41,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:00:41,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:00:41,897 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-21 01:00:41,898 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-21 01:00:41,898 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 01:00:41,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 01:00:41,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-21 01:00:41,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-21 01:00:41,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:00:41,900 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:00:41,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-21 01:00:41,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-21 01:00:41,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 01:00:41,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 01:00:41,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 01:00:41,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 01:00:41,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-21 01:00:41,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-21 01:00:41,902 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_timer [2021-11-21 01:00:41,903 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_timer [2021-11-21 01:00:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-21 01:00:41,903 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-21 01:00:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 01:00:41,904 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 01:00:41,905 INFO L130 BoogieDeclarations]: Found specification of procedure poll_tulip [2021-11-21 01:00:41,905 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_tulip [2021-11-21 01:00:41,909 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_write [2021-11-21 01:00:41,909 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_write [2021-11-21 01:00:41,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:00:41,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 01:00:41,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 01:00:41,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 01:00:41,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 01:00:41,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-21 01:00:41,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-21 01:00:41,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-21 01:00:41,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-21 01:00:41,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:00:41,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:00:41,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:00:41,920 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 01:00:41,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 01:00:41,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:00:41,920 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_start_nway [2021-11-21 01:00:41,920 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_start_nway [2021-11-21 01:00:41,920 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-21 01:00:41,921 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-21 01:00:41,921 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-21 01:00:41,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-21 01:00:41,921 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:00:41,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:00:41,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-21 01:00:41,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-21 01:00:41,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-21 01:00:41,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-21 01:00:41,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_tulip_private [2021-11-21 01:00:41,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_tulip_private [2021-11-21 01:00:41,923 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-21 01:00:41,923 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-21 01:00:41,924 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-21 01:00:41,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-21 01:00:41,924 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 01:00:41,924 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 01:00:41,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 01:00:41,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 01:00:41,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mii_lock_of_tulip_private [2021-11-21 01:00:41,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mii_lock_of_tulip_private [2021-11-21 01:00:41,924 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 01:00:41,925 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 01:00:41,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_tulip_private [2021-11-21 01:00:41,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_tulip_private [2021-11-21 01:00:41,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:00:41,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:00:41,925 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_close [2021-11-21 01:00:41,925 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_close [2021-11-21 01:00:41,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:00:41,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:00:41,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:00:41,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:00:41,925 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2021-11-21 01:00:41,926 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2021-11-21 01:00:41,926 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-21 01:00:41,926 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-21 01:00:41,926 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_power_state [2021-11-21 01:00:41,926 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_power_state [2021-11-21 01:00:41,926 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 01:00:41,926 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 01:00:41,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2021-11-21 01:00:41,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2021-11-21 01:00:41,927 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2021-11-21 01:00:41,927 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2021-11-21 01:00:41,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-21 01:00:41,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-21 01:00:41,928 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_tx_timeout [2021-11-21 01:00:41,929 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_tx_timeout [2021-11-21 01:00:41,929 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_check_duplex [2021-11-21 01:00:41,929 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_check_duplex [2021-11-21 01:00:41,930 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-21 01:00:41,930 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-21 01:00:41,933 INFO L130 BoogieDeclarations]: Found specification of procedure bitrev32 [2021-11-21 01:00:41,933 INFO L138 BoogieDeclarations]: Found implementation of procedure bitrev32 [2021-11-21 01:00:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2021-11-21 01:00:41,934 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2021-11-21 01:00:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:00:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:00:41,935 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 01:00:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 01:00:41,939 INFO L130 BoogieDeclarations]: Found specification of procedure comet_timer [2021-11-21 01:00:41,939 INFO L138 BoogieDeclarations]: Found implementation of procedure comet_timer [2021-11-21 01:00:41,939 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2021-11-21 01:00:41,939 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2021-11-21 01:00:41,939 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 01:00:41,940 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 01:00:41,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:00:41,940 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_read [2021-11-21 01:00:41,940 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_read [2021-11-21 01:00:41,940 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-21 01:00:41,940 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-21 01:00:41,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:00:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-21 01:00:41,941 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-21 01:00:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-21 01:00:41,941 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-21 01:00:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2021-11-21 01:00:41,941 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2021-11-21 01:00:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:00:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_down [2021-11-21 01:00:41,942 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_down [2021-11-21 01:00:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_stop_rxtx___2 [2021-11-21 01:00:41,942 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_stop_rxtx___2 [2021-11-21 01:00:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_remove_one [2021-11-21 01:00:41,942 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_remove_one [2021-11-21 01:00:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 01:00:41,943 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 01:00:41,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-21 01:00:41,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-21 01:00:41,943 INFO L130 BoogieDeclarations]: Found specification of procedure mxic_timer [2021-11-21 01:00:41,943 INFO L138 BoogieDeclarations]: Found implementation of procedure mxic_timer [2021-11-21 01:00:41,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:00:41,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:00:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-21 01:00:41,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-21 01:00:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_free_ring [2021-11-21 01:00:41,944 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_free_ring [2021-11-21 01:00:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-21 01:00:41,944 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-21 01:00:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_refill_rx [2021-11-21 01:00:41,945 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_refill_rx [2021-11-21 01:00:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_84___0 [2021-11-21 01:00:41,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_84___0 [2021-11-21 01:00:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_timer [2021-11-21 01:00:41,945 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_timer [2021-11-21 01:00:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_84 [2021-11-21 01:00:41,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_84 [2021-11-21 01:00:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 01:00:41,946 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 01:00:41,946 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 01:00:41,946 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 01:00:41,946 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-21 01:00:41,946 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-21 01:00:41,946 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 01:00:41,946 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 01:00:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:00:41,947 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:00:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:00:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx [2021-11-21 01:00:41,947 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx [2021-11-21 01:00:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:00:41,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:00:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_85 [2021-11-21 01:00:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_85 [2021-11-21 01:00:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2021-11-21 01:00:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2021-11-21 01:00:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_start_rxtx [2021-11-21 01:00:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_start_rxtx [2021-11-21 01:00:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 01:00:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 01:00:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_open [2021-11-21 01:00:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_open [2021-11-21 01:00:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-21 01:00:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-21 01:00:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:00:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:00:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-21 01:00:41,950 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-21 01:00:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-21 01:00:41,950 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-21 01:00:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-21 01:00:41,950 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-21 01:00:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_start_nway [2021-11-21 01:00:41,950 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_start_nway [2021-11-21 01:00:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-21 01:00:41,951 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-21 01:00:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_read_eeprom [2021-11-21 01:00:41,951 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_read_eeprom [2021-11-21 01:00:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:00:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_timer [2021-11-21 01:00:41,951 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_timer [2021-11-21 01:00:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:00:41,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:00:43,221 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:00:43,231 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:00:44,697 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:00:55,084 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 01:00:55,259 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:00:59,895 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:00:59,895 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 01:00:59,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:00:59 BoogieIcfgContainer [2021-11-21 01:00:59,905 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:00:59,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:00:59,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:00:59,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:00:59,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:00:32" (1/3) ... [2021-11-21 01:00:59,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c4f564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:00:59, skipping insertion in model container [2021-11-21 01:00:59,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:40" (2/3) ... [2021-11-21 01:00:59,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c4f564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:00:59, skipping insertion in model container [2021-11-21 01:00:59,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:00:59" (3/3) ... [2021-11-21 01:00:59,916 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-21 01:00:59,923 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:00:59,923 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:01:00,015 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:01:00,035 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:01:00,037 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:01:00,159 INFO L276 IsEmpty]: Start isEmpty. Operand has 2631 states, 1543 states have (on average 1.3512637718729748) internal successors, (2085), 1642 states have internal predecessors, (2085), 955 states have call successors, (955), 134 states have call predecessors, (955), 133 states have return successors, (948), 903 states have call predecessors, (948), 948 states have call successors, (948) [2021-11-21 01:01:00,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-21 01:01:00,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:00,215 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:00,216 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:01:00,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:00,222 INFO L85 PathProgramCache]: Analyzing trace with hash -882329180, now seen corresponding path program 1 times [2021-11-21 01:01:00,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:00,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34413909] [2021-11-21 01:01:00,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:00,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:01,555 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2021-11-21 01:01:01,556 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:01,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34413909] [2021-11-21 01:01:01,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34413909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:01,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:01,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:01:01,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920486043] [2021-11-21 01:01:01,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:01,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:01:01,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:01,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:01:01,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:01:01,611 INFO L87 Difference]: Start difference. First operand has 2631 states, 1543 states have (on average 1.3512637718729748) internal successors, (2085), 1642 states have internal predecessors, (2085), 955 states have call successors, (955), 134 states have call predecessors, (955), 133 states have return successors, (948), 903 states have call predecessors, (948), 948 states have call successors, (948) Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-21 01:01:07,842 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:01:09,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:01:10,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:10,612 INFO L93 Difference]: Finished difference Result 6981 states and 10636 transitions. [2021-11-21 01:01:10,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:01:10,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 170 [2021-11-21 01:01:10,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:10,690 INFO L225 Difference]: With dead ends: 6981 [2021-11-21 01:01:10,690 INFO L226 Difference]: Without dead ends: 4317 [2021-11-21 01:01:10,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:01:10,727 INFO L933 BasicCegarLoop]: 4151 mSDtfsCounter, 2651 mSDsluCounter, 3918 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2651 SdHoareTripleChecker+Valid, 7645 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:10,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2651 Valid, 7645 Invalid, 941 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 923 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2021-11-21 01:01:10,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4317 states. [2021-11-21 01:01:11,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4317 to 4314. [2021-11-21 01:01:11,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4314 states, 2572 states have (on average 1.3483670295489891) internal successors, (3468), 2726 states have internal predecessors, (3468), 1520 states have call successors, (1520), 221 states have call predecessors, (1520), 221 states have return successors, (1520), 1449 states have call predecessors, (1520), 1520 states have call successors, (1520) [2021-11-21 01:01:11,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4314 states to 4314 states and 6508 transitions. [2021-11-21 01:01:11,370 INFO L78 Accepts]: Start accepts. Automaton has 4314 states and 6508 transitions. Word has length 170 [2021-11-21 01:01:11,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:11,372 INFO L470 AbstractCegarLoop]: Abstraction has 4314 states and 6508 transitions. [2021-11-21 01:01:11,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-21 01:01:11,373 INFO L276 IsEmpty]: Start isEmpty. Operand 4314 states and 6508 transitions. [2021-11-21 01:01:11,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-21 01:01:11,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:11,405 INFO L514 BasicCegarLoop]: trace histogram [15, 13, 13, 13, 13, 13, 13, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:11,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:01:11,406 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:01:11,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:11,407 INFO L85 PathProgramCache]: Analyzing trace with hash 329585210, now seen corresponding path program 1 times [2021-11-21 01:01:11,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:11,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736917820] [2021-11-21 01:01:11,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:11,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2021-11-21 01:01:11,893 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:11,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736917820] [2021-11-21 01:01:11,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736917820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:11,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:11,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:01:11,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646497866] [2021-11-21 01:01:11,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:11,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:01:11,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:11,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:01:11,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:01:11,899 INFO L87 Difference]: Start difference. First operand 4314 states and 6508 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-21 01:01:19,026 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:01:19,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:19,940 INFO L93 Difference]: Finished difference Result 12700 states and 19141 transitions. [2021-11-21 01:01:19,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:01:19,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 215 [2021-11-21 01:01:19,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:20,063 INFO L225 Difference]: With dead ends: 12700 [2021-11-21 01:01:20,063 INFO L226 Difference]: Without dead ends: 8413 [2021-11-21 01:01:20,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:01:20,106 INFO L933 BasicCegarLoop]: 4339 mSDtfsCounter, 3564 mSDsluCounter, 3889 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3564 SdHoareTripleChecker+Valid, 7797 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:20,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3564 Valid, 7797 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 894 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2021-11-21 01:01:20,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8413 states. [2021-11-21 01:01:21,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8413 to 8396. [2021-11-21 01:01:21,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8396 states, 4999 states have (on average 1.344868973794759) internal successors, (6723), 5301 states have internal predecessors, (6723), 2958 states have call successors, (2958), 438 states have call predecessors, (2958), 438 states have return successors, (2958), 2817 states have call predecessors, (2958), 2958 states have call successors, (2958) [2021-11-21 01:01:21,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8396 states to 8396 states and 12639 transitions. [2021-11-21 01:01:21,161 INFO L78 Accepts]: Start accepts. Automaton has 8396 states and 12639 transitions. Word has length 215 [2021-11-21 01:01:21,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:21,162 INFO L470 AbstractCegarLoop]: Abstraction has 8396 states and 12639 transitions. [2021-11-21 01:01:21,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-21 01:01:21,164 INFO L276 IsEmpty]: Start isEmpty. Operand 8396 states and 12639 transitions. [2021-11-21 01:01:21,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-21 01:01:21,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:21,212 INFO L514 BasicCegarLoop]: trace histogram [15, 13, 13, 13, 13, 13, 13, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:21,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:01:21,212 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:01:21,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:21,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1527558549, now seen corresponding path program 1 times [2021-11-21 01:01:21,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:21,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253814010] [2021-11-21 01:01:21,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:21,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:21,822 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2021-11-21 01:01:21,823 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:21,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253814010] [2021-11-21 01:01:21,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253814010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:21,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:21,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:01:21,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828436628] [2021-11-21 01:01:21,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:21,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:01:21,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:21,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:01:21,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:01:21,827 INFO L87 Difference]: Start difference. First operand 8396 states and 12639 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-21 01:01:28,384 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:01:29,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:29,745 INFO L93 Difference]: Finished difference Result 24450 states and 36893 transitions. [2021-11-21 01:01:29,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:01:29,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 216 [2021-11-21 01:01:29,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:29,982 INFO L225 Difference]: With dead ends: 24450 [2021-11-21 01:01:29,982 INFO L226 Difference]: Without dead ends: 16081 [2021-11-21 01:01:30,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:01:30,063 INFO L933 BasicCegarLoop]: 4307 mSDtfsCounter, 3573 mSDsluCounter, 3779 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3573 SdHoareTripleChecker+Valid, 7672 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:30,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3573 Valid, 7672 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 859 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2021-11-21 01:01:30,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16081 states. [2021-11-21 01:01:31,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16081 to 16060. [2021-11-21 01:01:31,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16060 states, 9574 states have (on average 1.346354710674744) internal successors, (12890), 10155 states have internal predecessors, (12890), 5637 states have call successors, (5637), 856 states have call predecessors, (5637), 848 states have return successors, (5735), 5348 states have call predecessors, (5735), 5637 states have call successors, (5735) [2021-11-21 01:01:32,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16060 states to 16060 states and 24262 transitions. [2021-11-21 01:01:32,081 INFO L78 Accepts]: Start accepts. Automaton has 16060 states and 24262 transitions. Word has length 216 [2021-11-21 01:01:32,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:32,084 INFO L470 AbstractCegarLoop]: Abstraction has 16060 states and 24262 transitions. [2021-11-21 01:01:32,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-21 01:01:32,084 INFO L276 IsEmpty]: Start isEmpty. Operand 16060 states and 24262 transitions. [2021-11-21 01:01:32,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-21 01:01:32,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:32,135 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:32,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:01:32,138 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:01:32,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:32,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1146999482, now seen corresponding path program 1 times [2021-11-21 01:01:32,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:32,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976409671] [2021-11-21 01:01:32,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:32,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:32,651 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2021-11-21 01:01:32,652 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:32,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976409671] [2021-11-21 01:01:32,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976409671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:32,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:32,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:01:32,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517417717] [2021-11-21 01:01:32,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:32,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:01:32,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:32,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:01:32,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:01:32,656 INFO L87 Difference]: Start difference. First operand 16060 states and 24262 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-21 01:01:40,209 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:01:40,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:40,881 INFO L93 Difference]: Finished difference Result 38790 states and 58642 transitions. [2021-11-21 01:01:40,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:01:40,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 217 [2021-11-21 01:01:40,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:41,054 INFO L225 Difference]: With dead ends: 38790 [2021-11-21 01:01:41,054 INFO L226 Difference]: Without dead ends: 22757 [2021-11-21 01:01:41,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:01:41,141 INFO L933 BasicCegarLoop]: 5790 mSDtfsCounter, 2598 mSDsluCounter, 3854 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2598 SdHoareTripleChecker+Valid, 9222 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:41,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2598 Valid, 9222 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1186 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2021-11-21 01:01:41,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22757 states. [2021-11-21 01:01:43,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22757 to 22751. [2021-11-21 01:01:43,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22751 states, 13610 states have (on average 1.347391623806025) internal successors, (18338), 14415 states have internal predecessors, (18338), 7939 states have call successors, (7939), 1211 states have call predecessors, (7939), 1201 states have return successors, (8078), 7541 states have call predecessors, (8078), 7939 states have call successors, (8078) [2021-11-21 01:01:43,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22751 states to 22751 states and 34355 transitions. [2021-11-21 01:01:43,346 INFO L78 Accepts]: Start accepts. Automaton has 22751 states and 34355 transitions. Word has length 217 [2021-11-21 01:01:43,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:43,351 INFO L470 AbstractCegarLoop]: Abstraction has 22751 states and 34355 transitions. [2021-11-21 01:01:43,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-21 01:01:43,351 INFO L276 IsEmpty]: Start isEmpty. Operand 22751 states and 34355 transitions. [2021-11-21 01:01:43,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-21 01:01:43,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:43,401 INFO L514 BasicCegarLoop]: trace histogram [16, 13, 13, 13, 13, 13, 13, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:43,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:01:43,402 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:01:43,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:43,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1104180102, now seen corresponding path program 1 times [2021-11-21 01:01:43,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:43,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996055961] [2021-11-21 01:01:43,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:43,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2021-11-21 01:01:44,079 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:44,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996055961] [2021-11-21 01:01:44,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996055961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:44,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:44,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:01:44,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912528800] [2021-11-21 01:01:44,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:44,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:01:44,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:44,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:01:44,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:01:44,082 INFO L87 Difference]: Start difference. First operand 22751 states and 34355 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-21 01:01:50,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:01:51,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:51,404 INFO L93 Difference]: Finished difference Result 48748 states and 73555 transitions. [2021-11-21 01:01:51,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:01:51,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 230 [2021-11-21 01:01:51,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:51,725 INFO L225 Difference]: With dead ends: 48748 [2021-11-21 01:01:51,725 INFO L226 Difference]: Without dead ends: 26024 [2021-11-21 01:01:51,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:01:51,829 INFO L933 BasicCegarLoop]: 4067 mSDtfsCounter, 2552 mSDsluCounter, 3869 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2552 SdHoareTripleChecker+Valid, 7511 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:51,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2552 Valid, 7511 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 887 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-11-21 01:01:51,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26024 states. [2021-11-21 01:01:54,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26024 to 26022. [2021-11-21 01:01:54,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26022 states, 15590 states have (on average 1.3468248877485567) internal successors, (20997), 16502 states have internal predecessors, (20997), 9038 states have call successors, (9038), 1404 states have call predecessors, (9038), 1393 states have return successors, (9196), 8590 states have call predecessors, (9196), 9038 states have call successors, (9196) [2021-11-21 01:01:54,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26022 states to 26022 states and 39231 transitions. [2021-11-21 01:01:54,480 INFO L78 Accepts]: Start accepts. Automaton has 26022 states and 39231 transitions. Word has length 230 [2021-11-21 01:01:54,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:54,495 INFO L470 AbstractCegarLoop]: Abstraction has 26022 states and 39231 transitions. [2021-11-21 01:01:54,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-21 01:01:54,496 INFO L276 IsEmpty]: Start isEmpty. Operand 26022 states and 39231 transitions. [2021-11-21 01:01:54,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-11-21 01:01:54,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:54,625 INFO L514 BasicCegarLoop]: trace histogram [19, 13, 13, 13, 13, 13, 13, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:54,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:01:54,625 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:01:54,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:54,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1847707731, now seen corresponding path program 1 times [2021-11-21 01:01:54,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:54,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498037004] [2021-11-21 01:01:54,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:54,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked. [2021-11-21 01:01:55,059 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:55,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498037004] [2021-11-21 01:01:55,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498037004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:55,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:55,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:01:55,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962349189] [2021-11-21 01:01:55,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:55,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:01:55,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:55,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:01:55,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:01:55,064 INFO L87 Difference]: Start difference. First operand 26022 states and 39231 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-21 01:02:02,747 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:02:03,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:03,489 INFO L93 Difference]: Finished difference Result 59938 states and 90358 transitions. [2021-11-21 01:02:03,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:02:03,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 272 [2021-11-21 01:02:03,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:03,742 INFO L225 Difference]: With dead ends: 59938 [2021-11-21 01:02:03,742 INFO L226 Difference]: Without dead ends: 37138 [2021-11-21 01:02:03,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:02:03,858 INFO L933 BasicCegarLoop]: 6650 mSDtfsCounter, 3564 mSDsluCounter, 3887 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3564 SdHoareTripleChecker+Valid, 10106 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:03,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3564 Valid, 10106 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1287 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2021-11-21 01:02:03,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37138 states. [2021-11-21 01:02:06,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37138 to 37113. [2021-11-21 01:02:06,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37113 states, 22214 states have (on average 1.3464481858287567) internal successors, (29910), 23526 states have internal predecessors, (29910), 12901 states have call successors, (12901), 2013 states have call predecessors, (12901), 1997 states have return successors, (13124), 12252 states have call predecessors, (13124), 12901 states have call successors, (13124) [2021-11-21 01:02:07,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37113 states to 37113 states and 55935 transitions. [2021-11-21 01:02:07,315 INFO L78 Accepts]: Start accepts. Automaton has 37113 states and 55935 transitions. Word has length 272 [2021-11-21 01:02:07,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:07,316 INFO L470 AbstractCegarLoop]: Abstraction has 37113 states and 55935 transitions. [2021-11-21 01:02:07,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-21 01:02:07,316 INFO L276 IsEmpty]: Start isEmpty. Operand 37113 states and 55935 transitions. [2021-11-21 01:02:07,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-11-21 01:02:07,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:07,401 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:07,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:02:07,402 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:02:07,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:07,403 INFO L85 PathProgramCache]: Analyzing trace with hash -966427155, now seen corresponding path program 1 times [2021-11-21 01:02:07,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:07,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151812375] [2021-11-21 01:02:07,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:07,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:07,829 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2021-11-21 01:02:07,830 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:07,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151812375] [2021-11-21 01:02:07,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151812375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:07,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:02:07,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:02:07,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438532026] [2021-11-21 01:02:07,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:07,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:02:07,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:07,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:02:07,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:02:07,834 INFO L87 Difference]: Start difference. First operand 37113 states and 55935 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-21 01:02:15,592 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:02:16,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:16,297 INFO L93 Difference]: Finished difference Result 107436 states and 161861 transitions. [2021-11-21 01:02:16,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:02:16,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 273 [2021-11-21 01:02:16,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:17,021 INFO L225 Difference]: With dead ends: 107436 [2021-11-21 01:02:17,022 INFO L226 Difference]: Without dead ends: 70350 [2021-11-21 01:02:17,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:02:17,212 INFO L933 BasicCegarLoop]: 4362 mSDtfsCounter, 3570 mSDsluCounter, 3889 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3570 SdHoareTripleChecker+Valid, 7820 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:17,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3570 Valid, 7820 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 895 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2021-11-21 01:02:17,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70350 states. [2021-11-21 01:02:21,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70350 to 70325. [2021-11-21 01:02:21,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70325 states, 42087 states have (on average 1.344666999310951) internal successors, (56593), 44595 states have internal predecessors, (56593), 24422 states have call successors, (24422), 3846 states have call predecessors, (24422), 3815 states have return successors, (24819), 23177 states have call predecessors, (24819), 24422 states have call successors, (24819) [2021-11-21 01:02:21,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70325 states to 70325 states and 105834 transitions. [2021-11-21 01:02:21,962 INFO L78 Accepts]: Start accepts. Automaton has 70325 states and 105834 transitions. Word has length 273 [2021-11-21 01:02:21,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:21,963 INFO L470 AbstractCegarLoop]: Abstraction has 70325 states and 105834 transitions. [2021-11-21 01:02:21,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-21 01:02:21,964 INFO L276 IsEmpty]: Start isEmpty. Operand 70325 states and 105834 transitions. [2021-11-21 01:02:22,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-11-21 01:02:22,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:22,085 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:22,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:02:22,086 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:02:22,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:22,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1923210462, now seen corresponding path program 1 times [2021-11-21 01:02:22,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:22,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630960444] [2021-11-21 01:02:22,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:22,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:22,975 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2021-11-21 01:02:22,975 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:22,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630960444] [2021-11-21 01:02:22,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630960444] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:22,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:02:22,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:02:22,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527330680] [2021-11-21 01:02:22,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:22,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:02:22,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:22,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:02:22,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:02:22,979 INFO L87 Difference]: Start difference. First operand 70325 states and 105834 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-21 01:02:32,281 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:02:33,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:33,546 INFO L93 Difference]: Finished difference Result 206859 states and 311245 transitions. [2021-11-21 01:02:33,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:02:33,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 275 [2021-11-21 01:02:33,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:34,355 INFO L225 Difference]: With dead ends: 206859 [2021-11-21 01:02:34,355 INFO L226 Difference]: Without dead ends: 136561 [2021-11-21 01:02:34,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:02:34,623 INFO L933 BasicCegarLoop]: 4377 mSDtfsCounter, 3568 mSDsluCounter, 3889 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3568 SdHoareTripleChecker+Valid, 7835 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:34,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3568 Valid, 7835 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 894 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2021-11-21 01:02:34,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136561 states. [2021-11-21 01:02:42,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136561 to 136536. [2021-11-21 01:02:43,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136536 states, 81701 states have (on average 1.3430190572942804) internal successors, (109726), 86612 states have internal predecessors, (109726), 47391 states have call successors, (47391), 7504 states have call predecessors, (47391), 7443 states have return successors, (48112), 44943 states have call predecessors, (48112), 47391 states have call successors, (48112) [2021-11-21 01:02:44,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136536 states to 136536 states and 205229 transitions. [2021-11-21 01:02:44,347 INFO L78 Accepts]: Start accepts. Automaton has 136536 states and 205229 transitions. Word has length 275 [2021-11-21 01:02:44,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:44,348 INFO L470 AbstractCegarLoop]: Abstraction has 136536 states and 205229 transitions. [2021-11-21 01:02:44,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-21 01:02:44,349 INFO L276 IsEmpty]: Start isEmpty. Operand 136536 states and 205229 transitions. [2021-11-21 01:02:44,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-11-21 01:02:44,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:44,507 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:44,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:02:44,507 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:02:44,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:44,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1515834779, now seen corresponding path program 1 times [2021-11-21 01:02:44,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:44,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188200459] [2021-11-21 01:02:44,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:44,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:44,932 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2021-11-21 01:02:44,932 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:44,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188200459] [2021-11-21 01:02:44,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188200459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:44,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:02:44,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:02:44,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876521578] [2021-11-21 01:02:44,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:44,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:02:44,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:44,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:02:44,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:02:44,937 INFO L87 Difference]: Start difference. First operand 136536 states and 205229 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35)