./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2eebb2d-5e95-4087-911a-6124cbf86dee/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2eebb2d-5e95-4087-911a-6124cbf86dee/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2eebb2d-5e95-4087-911a-6124cbf86dee/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2eebb2d-5e95-4087-911a-6124cbf86dee/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2eebb2d-5e95-4087-911a-6124cbf86dee/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2eebb2d-5e95-4087-911a-6124cbf86dee/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c2d7f6c194f04de54ba5a893678a720456a663ad567a49e51faf84a68b16d812 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:55:43,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:55:43,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:55:43,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:55:43,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:55:43,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:55:43,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:55:43,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:55:43,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:55:43,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:55:43,677 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:55:43,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:55:43,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:55:43,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:55:43,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:55:43,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:55:43,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:55:43,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:55:43,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:55:43,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:55:43,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:55:43,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:55:43,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:55:43,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:55:43,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:55:43,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:55:43,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:55:43,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:55:43,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:55:43,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:55:43,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:55:43,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:55:43,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:55:43,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:55:43,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:55:43,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:55:43,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:55:43,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:55:43,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:55:43,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:55:43,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:55:43,732 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2eebb2d-5e95-4087-911a-6124cbf86dee/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:55:43,780 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:55:43,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:55:43,781 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:55:43,781 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:55:43,788 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:55:43,788 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:55:43,789 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:55:43,789 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:55:43,789 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:55:43,789 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:55:43,790 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:55:43,790 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:55:43,791 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:55:43,791 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:55:43,791 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:55:43,791 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:55:43,791 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:55:43,792 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:55:43,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:55:43,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:55:43,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:55:43,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:55:43,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:55:43,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:55:43,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:55:43,794 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:55:43,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:55:43,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:55:43,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:55:43,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:55:43,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:55:43,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:55:43,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:55:43,795 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:55:43,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:55:43,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:55:43,796 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:55:43,796 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:55:43,796 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_c2eebb2d-5e95-4087-911a-6124cbf86dee/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2eebb2d-5e95-4087-911a-6124cbf86dee/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2d7f6c194f04de54ba5a893678a720456a663ad567a49e51faf84a68b16d812 [2021-11-25 18:55:44,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:55:44,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:55:44,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:55:44,100 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:55:44,100 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:55:44,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2eebb2d-5e95-4087-911a-6124cbf86dee/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2021-11-25 18:55:44,173 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2eebb2d-5e95-4087-911a-6124cbf86dee/bin/utaipan-eEHZpOm5b7/data/c848c4e54/25aaa015642e46219a277372772b7d0c/FLAGa6be7a827 [2021-11-25 18:55:45,154 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:55:45,155 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2eebb2d-5e95-4087-911a-6124cbf86dee/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2021-11-25 18:55:45,248 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2eebb2d-5e95-4087-911a-6124cbf86dee/bin/utaipan-eEHZpOm5b7/data/c848c4e54/25aaa015642e46219a277372772b7d0c/FLAGa6be7a827 [2021-11-25 18:55:45,480 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2eebb2d-5e95-4087-911a-6124cbf86dee/bin/utaipan-eEHZpOm5b7/data/c848c4e54/25aaa015642e46219a277372772b7d0c [2021-11-25 18:55:45,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:55:45,486 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:55:45,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:55:45,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:55:45,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:55:45,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:55:45" (1/1) ... [2021-11-25 18:55:45,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eea0653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:45, skipping insertion in model container [2021-11-25 18:55:45,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:55:45" (1/1) ... [2021-11-25 18:55:45,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:55:45,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:55:49,616 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_c2eebb2d-5e95-4087-911a-6124cbf86dee/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415292,415305] [2021-11-25 18:55:49,619 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_c2eebb2d-5e95-4087-911a-6124cbf86dee/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415437,415450] [2021-11-25 18:55:49,665 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:55:49,698 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:55:50,161 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_c2eebb2d-5e95-4087-911a-6124cbf86dee/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415292,415305] [2021-11-25 18:55:50,162 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_c2eebb2d-5e95-4087-911a-6124cbf86dee/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415437,415450] [2021-11-25 18:55:50,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:55:50,453 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:55:50,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:50 WrapperNode [2021-11-25 18:55:50,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:55:50,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:55:50,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:55:50,455 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:55:50,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:50" (1/1) ... [2021-11-25 18:55:50,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:50" (1/1) ... [2021-11-25 18:55:50,863 INFO L137 Inliner]: procedures = 562, calls = 2384, calls flagged for inlining = 265, calls inlined = 187, statements flattened = 4537 [2021-11-25 18:55:50,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:55:50,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:55:50,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:55:50,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:55:50,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:50" (1/1) ... [2021-11-25 18:55:50,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:50" (1/1) ... [2021-11-25 18:55:50,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:50" (1/1) ... [2021-11-25 18:55:50,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:50" (1/1) ... [2021-11-25 18:55:51,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:50" (1/1) ... [2021-11-25 18:55:51,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:50" (1/1) ... [2021-11-25 18:55:51,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:50" (1/1) ... [2021-11-25 18:55:51,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:55:51,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:55:51,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:55:51,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:55:51,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:50" (1/1) ... [2021-11-25 18:55:51,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:55:51,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2eebb2d-5e95-4087-911a-6124cbf86dee/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:55:51,198 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2eebb2d-5e95-4087-911a-6124cbf86dee/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:55:51,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2eebb2d-5e95-4087-911a-6124cbf86dee/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:55:51,254 INFO L130 BoogieDeclarations]: Found specification of procedure get_page [2021-11-25 18:55:51,254 INFO L138 BoogieDeclarations]: Found implementation of procedure get_page [2021-11-25 18:55:51,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:55:51,255 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:55:51,255 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-11-25 18:55:51,255 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-11-25 18:55:51,255 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-25 18:55:51,255 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-25 18:55:51,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:55:51,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:55:51,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rx_lock_of_netfront_info [2021-11-25 18:55:51,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rx_lock_of_netfront_info [2021-11-25 18:55:51,256 INFO L130 BoogieDeclarations]: Found specification of procedure bind_evtchn_to_irqhandler [2021-11-25 18:55:51,256 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_evtchn_to_irqhandler [2021-11-25 18:55:51,257 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-25 18:55:51,257 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-25 18:55:51,257 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_interrupt [2021-11-25 18:55:51,257 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_interrupt [2021-11-25 18:55:51,257 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 18:55:51,257 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 18:55:51,257 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_grant_ring [2021-11-25 18:55:51,258 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_grant_ring [2021-11-25 18:55:51,258 INFO L130 BoogieDeclarations]: Found specification of procedure free_percpu [2021-11-25 18:55:51,258 INFO L138 BoogieDeclarations]: Found implementation of procedure free_percpu [2021-11-25 18:55:51,258 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_claim_grant_reference [2021-11-25 18:55:51,258 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_claim_grant_reference [2021-11-25 18:55:51,258 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access [2021-11-25 18:55:51,259 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access [2021-11-25 18:55:51,259 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_disconnect_backend [2021-11-25 18:55:51,259 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_disconnect_backend [2021-11-25 18:55:51,259 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 18:55:51,259 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 18:55:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_alloc_grant_references [2021-11-25 18:55:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_alloc_grant_references [2021-11-25 18:55:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_release_grant_reference [2021-11-25 18:55:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_release_grant_reference [2021-11-25 18:55:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 18:55:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 18:55:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-25 18:55:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-25 18:55:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 18:55:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 18:55:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rxidx [2021-11-25 18:55:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rxidx [2021-11-25 18:55:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:55:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-25 18:55:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-25 18:55:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure pfn_to_mfn [2021-11-25 18:55:51,262 INFO L138 BoogieDeclarations]: Found implementation of procedure pfn_to_mfn [2021-11-25 18:55:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure skb_entry_set_link [2021-11-25 18:55:51,262 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_entry_set_link [2021-11-25 18:55:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 18:55:51,262 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 18:55:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_free_grant_references [2021-11-25 18:55:51,263 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_free_grant_references [2021-11-25 18:55:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2021-11-25 18:55:51,263 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2021-11-25 18:55:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-25 18:55:51,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-25 18:55:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 18:55:51,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 18:55:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:55:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 18:55:51,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 18:55:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:55:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 18:55:51,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 18:55:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 18:55:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 18:55:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_124 [2021-11-25 18:55:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_124 [2021-11-25 18:55:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 18:55:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 18:55:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-25 18:55:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-25 18:55:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_ref [2021-11-25 18:55:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_ref [2021-11-25 18:55:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2021-11-25 18:55:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2021-11-25 18:55:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2021-11-25 18:55:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2021-11-25 18:55:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:55:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 18:55:51,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 18:55:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:55:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 18:55:51,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 18:55:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:55:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-25 18:55:51,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-25 18:55:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-25 18:55:51,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-25 18:55:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_grant_foreign_access_ref [2021-11-25 18:55:51,268 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_grant_foreign_access_ref [2021-11-25 18:55:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-25 18:55:51,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-25 18:55:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 18:55:51,268 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 18:55:51,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 18:55:51,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 18:55:51,269 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 18:55:51,269 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 18:55:51,269 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_skb [2021-11-25 18:55:51,269 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_skb [2021-11-25 18:55:51,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:55:51,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:55:51,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_netif_exit_20_2 [2021-11-25 18:55:51,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_netif_exit_20_2 [2021-11-25 18:55:51,270 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-25 18:55:51,270 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-25 18:55:51,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:55:51,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:55:51,271 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_release_tx_bufs [2021-11-25 18:55:51,271 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_release_tx_bufs [2021-11-25 18:55:51,271 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2021-11-25 18:55:51,271 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2021-11-25 18:55:51,271 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_write [2021-11-25 18:55:51,271 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_write [2021-11-25 18:55:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 18:55:51,272 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 18:55:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 18:55:51,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 18:55:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2021-11-25 18:55:51,272 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2021-11-25 18:55:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:55:51,273 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:55:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 18:55:51,273 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 18:55:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-25 18:55:51,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-25 18:55:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_alloc_evtchn [2021-11-25 18:55:51,274 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_alloc_evtchn [2021-11-25 18:55:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-25 18:55:51,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-25 18:55:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:55:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure netfront_tx_slot_available [2021-11-25 18:55:51,275 INFO L138 BoogieDeclarations]: Found implementation of procedure netfront_tx_slot_available [2021-11-25 18:55:51,275 INFO L130 BoogieDeclarations]: Found specification of procedure notify_remote_via_irq [2021-11-25 18:55:51,275 INFO L138 BoogieDeclarations]: Found implementation of procedure notify_remote_via_irq [2021-11-25 18:55:51,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_tx_lock_of_netfront_info [2021-11-25 18:55:51,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_tx_lock_of_netfront_info [2021-11-25 18:55:51,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:55:51,275 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2021-11-25 18:55:51,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2021-11-25 18:55:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_min [2021-11-25 18:55:51,276 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_min [2021-11-25 18:55:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_107 [2021-11-25 18:55:51,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_107 [2021-11-25 18:55:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:55:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-25 18:55:51,277 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-25 18:55:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure add_id_to_freelist [2021-11-25 18:55:51,277 INFO L138 BoogieDeclarations]: Found implementation of procedure add_id_to_freelist [2021-11-25 18:55:51,278 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_alloc_rx_buffers [2021-11-25 18:55:51,278 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_alloc_rx_buffers [2021-11-25 18:55:51,278 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 18:55:51,278 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 18:55:51,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 18:55:51,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 18:55:51,279 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2021-11-25 18:55:51,279 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2021-11-25 18:55:51,279 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access_ref [2021-11-25 18:55:51,279 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access_ref [2021-11-25 18:55:51,279 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-25 18:55:51,279 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-25 18:55:51,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_104 [2021-11-25 18:55:51,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_104 [2021-11-25 18:55:51,280 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2021-11-25 18:55:51,280 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2021-11-25 18:55:51,280 INFO L130 BoogieDeclarations]: Found specification of procedure get_zeroed_page [2021-11-25 18:55:51,280 INFO L138 BoogieDeclarations]: Found implementation of procedure get_zeroed_page [2021-11-25 18:55:51,280 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2021-11-25 18:55:51,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2021-11-25 18:55:51,281 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 18:55:51,281 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 18:55:51,281 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 18:55:51,281 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 18:55:51,281 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2021-11-25 18:55:51,282 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2021-11-25 18:55:51,282 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_end_access [2021-11-25 18:55:51,282 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_end_access [2021-11-25 18:55:51,282 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 18:55:51,282 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 18:55:51,282 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 18:55:51,283 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 18:55:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2021-11-25 18:55:51,283 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2021-11-25 18:55:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:55:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 18:55:51,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 18:55:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 18:55:51,284 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 18:55:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rx_interrupt [2021-11-25 18:55:51,284 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rx_interrupt [2021-11-25 18:55:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2021-11-25 18:55:51,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2021-11-25 18:55:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-25 18:55:51,285 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-25 18:55:51,285 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2021-11-25 18:55:51,285 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2021-11-25 18:55:51,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_105 [2021-11-25 18:55:51,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_105 [2021-11-25 18:55:51,285 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_max [2021-11-25 18:55:51,286 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_max [2021-11-25 18:55:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-25 18:55:51,286 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-25 18:55:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2021-11-25 18:55:51,286 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2021-11-25 18:55:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 18:55:51,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 18:55:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_interrupt [2021-11-25 18:55:51,287 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_interrupt [2021-11-25 18:55:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_123 [2021-11-25 18:55:51,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_123 [2021-11-25 18:55:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:55:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 18:55:51,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 18:55:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-25 18:55:51,288 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-25 18:55:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2021-11-25 18:55:51,288 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2021-11-25 18:55:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_free_evtchn [2021-11-25 18:55:51,289 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_free_evtchn [2021-11-25 18:55:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_buf_gc [2021-11-25 18:55:51,289 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_buf_gc [2021-11-25 18:55:52,121 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:55:52,128 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:55:52,359 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:56:00,568 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 18:56:00,743 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:56:01,600 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:56:01,600 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 18:56:01,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:56:01 BoogieIcfgContainer [2021-11-25 18:56:01,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:56:01,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:56:01,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:56:01,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:56:01,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:55:45" (1/3) ... [2021-11-25 18:56:01,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d036a3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:56:01, skipping insertion in model container [2021-11-25 18:56:01,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:50" (2/3) ... [2021-11-25 18:56:01,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d036a3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:56:01, skipping insertion in model container [2021-11-25 18:56:01,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:56:01" (3/3) ... [2021-11-25 18:56:01,613 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2021-11-25 18:56:01,618 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:56:01,618 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:56:01,724 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:56:01,733 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:56:01,739 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:56:01,800 INFO L276 IsEmpty]: Start isEmpty. Operand has 1251 states, 714 states have (on average 1.2759103641456582) internal successors, (911), 733 states have internal predecessors, (911), 431 states have call successors, (431), 106 states have call predecessors, (431), 105 states have return successors, (426), 425 states have call predecessors, (426), 426 states have call successors, (426) [2021-11-25 18:56:01,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2021-11-25 18:56:01,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:01,839 INFO L514 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:01,839 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:56:01,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:01,844 INFO L85 PathProgramCache]: Analyzing trace with hash -703431458, now seen corresponding path program 1 times [2021-11-25 18:56:01,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:01,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790487456] [2021-11-25 18:56:01,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:01,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:02,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3317 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3317 trivial. 0 not checked. [2021-11-25 18:56:02,779 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:02,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790487456] [2021-11-25 18:56:02,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790487456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:02,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:02,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:56:02,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991537124] [2021-11-25 18:56:02,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:02,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:56:02,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:02,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:56:02,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:56:02,839 INFO L87 Difference]: Start difference. First operand has 1251 states, 714 states have (on average 1.2759103641456582) internal successors, (911), 733 states have internal predecessors, (911), 431 states have call successors, (431), 106 states have call predecessors, (431), 105 states have return successors, (426), 425 states have call predecessors, (426), 426 states have call successors, (426) Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-25 18:56:06,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:06,139 INFO L93 Difference]: Finished difference Result 3597 states and 5093 transitions. [2021-11-25 18:56:06,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:56:06,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 395 [2021-11-25 18:56:06,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:06,178 INFO L225 Difference]: With dead ends: 3597 [2021-11-25 18:56:06,178 INFO L226 Difference]: Without dead ends: 2335 [2021-11-25 18:56:06,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:56:06,195 INFO L933 BasicCegarLoop]: 1891 mSDtfsCounter, 1611 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1611 SdHoareTripleChecker+Valid, 3372 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:06,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1611 Valid, 3372 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-25 18:56:06,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2021-11-25 18:56:06,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 2331. [2021-11-25 18:56:06,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2331 states, 1362 states have (on average 1.2723935389133627) internal successors, (1733), 1400 states have internal predecessors, (1733), 762 states have call successors, (762), 206 states have call predecessors, (762), 206 states have return successors, (762), 758 states have call predecessors, (762), 762 states have call successors, (762) [2021-11-25 18:56:06,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3257 transitions. [2021-11-25 18:56:06,547 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3257 transitions. Word has length 395 [2021-11-25 18:56:06,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:06,555 INFO L470 AbstractCegarLoop]: Abstraction has 2331 states and 3257 transitions. [2021-11-25 18:56:06,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-25 18:56:06,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3257 transitions. [2021-11-25 18:56:06,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2021-11-25 18:56:06,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:06,582 INFO L514 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:06,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:56:06,583 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:56:06,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:06,585 INFO L85 PathProgramCache]: Analyzing trace with hash 2050985762, now seen corresponding path program 1 times [2021-11-25 18:56:06,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:06,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653412689] [2021-11-25 18:56:06,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:06,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:06,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3326 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3326 trivial. 0 not checked. [2021-11-25 18:56:06,985 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:06,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653412689] [2021-11-25 18:56:06,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653412689] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:06,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:06,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:56:06,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866989180] [2021-11-25 18:56:06,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:06,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:56:06,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:06,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:56:06,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:56:06,993 INFO L87 Difference]: Start difference. First operand 2331 states and 3257 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-25 18:56:09,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:09,645 INFO L93 Difference]: Finished difference Result 6813 states and 9500 transitions. [2021-11-25 18:56:09,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:56:09,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 399 [2021-11-25 18:56:09,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:09,685 INFO L225 Difference]: With dead ends: 6813 [2021-11-25 18:56:09,685 INFO L226 Difference]: Without dead ends: 4541 [2021-11-25 18:56:09,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:56:09,697 INFO L933 BasicCegarLoop]: 1815 mSDtfsCounter, 1549 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 3232 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:09,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 3232 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-25 18:56:09,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4541 states. [2021-11-25 18:56:10,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4541 to 4537. [2021-11-25 18:56:10,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4537 states, 2658 states have (on average 1.27313769751693) internal successors, (3384), 2736 states have internal predecessors, (3384), 1467 states have call successors, (1467), 411 states have call predecessors, (1467), 411 states have return successors, (1467), 1457 states have call predecessors, (1467), 1467 states have call successors, (1467) [2021-11-25 18:56:10,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4537 states to 4537 states and 6318 transitions. [2021-11-25 18:56:10,060 INFO L78 Accepts]: Start accepts. Automaton has 4537 states and 6318 transitions. Word has length 399 [2021-11-25 18:56:10,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:10,065 INFO L470 AbstractCegarLoop]: Abstraction has 4537 states and 6318 transitions. [2021-11-25 18:56:10,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-25 18:56:10,066 INFO L276 IsEmpty]: Start isEmpty. Operand 4537 states and 6318 transitions. [2021-11-25 18:56:10,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2021-11-25 18:56:10,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:10,087 INFO L514 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:10,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:56:10,088 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:56:10,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:10,088 INFO L85 PathProgramCache]: Analyzing trace with hash -412442778, now seen corresponding path program 1 times [2021-11-25 18:56:10,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:10,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142481586] [2021-11-25 18:56:10,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:10,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:10,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3326 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3326 trivial. 0 not checked. [2021-11-25 18:56:10,409 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:10,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142481586] [2021-11-25 18:56:10,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142481586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:10,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:10,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:56:10,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466897003] [2021-11-25 18:56:10,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:10,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:56:10,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:10,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:56:10,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:56:10,413 INFO L87 Difference]: Start difference. First operand 4537 states and 6318 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, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-25 18:56:14,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:56:15,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:15,505 INFO L93 Difference]: Finished difference Result 13367 states and 18600 transitions. [2021-11-25 18:56:15,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:56:15,506 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, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 400 [2021-11-25 18:56:15,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:15,585 INFO L225 Difference]: With dead ends: 13367 [2021-11-25 18:56:15,585 INFO L226 Difference]: Without dead ends: 8889 [2021-11-25 18:56:15,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:56:15,611 INFO L933 BasicCegarLoop]: 1962 mSDtfsCounter, 1547 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 3379 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:15,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1551 Valid, 3379 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 592 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-11-25 18:56:15,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8889 states. [2021-11-25 18:56:16,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8889 to 8885. [2021-11-25 18:56:16,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8885 states, 5216 states have (on average 1.272239263803681) internal successors, (6636), 5374 states have internal predecessors, (6636), 2849 states have call successors, (2849), 819 states have call predecessors, (2849), 819 states have return successors, (2862), 2827 states have call predecessors, (2862), 2849 states have call successors, (2862) [2021-11-25 18:56:16,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8885 states to 8885 states and 12347 transitions. [2021-11-25 18:56:16,260 INFO L78 Accepts]: Start accepts. Automaton has 8885 states and 12347 transitions. Word has length 400 [2021-11-25 18:56:16,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:16,261 INFO L470 AbstractCegarLoop]: Abstraction has 8885 states and 12347 transitions. [2021-11-25 18:56:16,262 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, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-25 18:56:16,262 INFO L276 IsEmpty]: Start isEmpty. Operand 8885 states and 12347 transitions. [2021-11-25 18:56:16,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2021-11-25 18:56:16,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:16,370 INFO L514 BasicCegarLoop]: trace histogram [31, 29, 29, 29, 29, 29, 29, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:16,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:56:16,370 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:56:16,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:16,371 INFO L85 PathProgramCache]: Analyzing trace with hash 389974188, now seen corresponding path program 1 times [2021-11-25 18:56:16,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:16,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610879262] [2021-11-25 18:56:16,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:16,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3401 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3398 trivial. 0 not checked. [2021-11-25 18:56:16,665 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:16,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610879262] [2021-11-25 18:56:16,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610879262] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:16,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:16,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:56:16,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114635577] [2021-11-25 18:56:16,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:16,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:56:16,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:16,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:56:16,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:56:16,670 INFO L87 Difference]: Start difference. First operand 8885 states and 12347 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-25 18:56:18,301 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:56:21,496 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:56:22,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:22,164 INFO L93 Difference]: Finished difference Result 18792 states and 26050 transitions. [2021-11-25 18:56:22,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:56:22,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 414 [2021-11-25 18:56:22,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:22,268 INFO L225 Difference]: With dead ends: 18792 [2021-11-25 18:56:22,268 INFO L226 Difference]: Without dead ends: 9966 [2021-11-25 18:56:22,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:56:22,309 INFO L933 BasicCegarLoop]: 1834 mSDtfsCounter, 1410 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 3233 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:22,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1412 Valid, 3233 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 560 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2021-11-25 18:56:22,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9966 states. [2021-11-25 18:56:22,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9966 to 9964. [2021-11-25 18:56:22,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9964 states, 5851 states have (on average 1.2693556656981713) internal successors, (7427), 6027 states have internal predecessors, (7427), 3172 states have call successors, (3172), 940 states have call predecessors, (3172), 940 states have return successors, (3187), 3149 states have call predecessors, (3187), 3172 states have call successors, (3187) [2021-11-25 18:56:22,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9964 states to 9964 states and 13786 transitions. [2021-11-25 18:56:23,001 INFO L78 Accepts]: Start accepts. Automaton has 9964 states and 13786 transitions. Word has length 414 [2021-11-25 18:56:23,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:23,004 INFO L470 AbstractCegarLoop]: Abstraction has 9964 states and 13786 transitions. [2021-11-25 18:56:23,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-25 18:56:23,004 INFO L276 IsEmpty]: Start isEmpty. Operand 9964 states and 13786 transitions. [2021-11-25 18:56:23,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2021-11-25 18:56:23,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:23,044 INFO L514 BasicCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:23,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:56:23,045 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:56:23,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:23,045 INFO L85 PathProgramCache]: Analyzing trace with hash 275502618, now seen corresponding path program 1 times [2021-11-25 18:56:23,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:23,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879215870] [2021-11-25 18:56:23,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:23,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:23,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3571 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3564 trivial. 0 not checked. [2021-11-25 18:56:23,321 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:23,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879215870] [2021-11-25 18:56:23,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879215870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:23,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:23,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:56:23,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949751403] [2021-11-25 18:56:23,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:23,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:56:23,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:23,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:56:23,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:56:23,323 INFO L87 Difference]: Start difference. First operand 9964 states and 13786 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-25 18:56:28,158 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:56:28,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:28,622 INFO L93 Difference]: Finished difference Result 23242 states and 32156 transitions. [2021-11-25 18:56:28,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:56:28,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 448 [2021-11-25 18:56:28,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:28,799 INFO L225 Difference]: With dead ends: 23242 [2021-11-25 18:56:28,799 INFO L226 Difference]: Without dead ends: 14344 [2021-11-25 18:56:28,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:56:28,832 INFO L933 BasicCegarLoop]: 2574 mSDtfsCounter, 1548 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 3989 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:28,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1548 Valid, 3989 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 764 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2021-11-25 18:56:28,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14344 states. [2021-11-25 18:56:29,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14344 to 14340. [2021-11-25 18:56:29,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14340 states, 8421 states have (on average 1.269564184776155) internal successors, (10691), 8677 states have internal predecessors, (10691), 4558 states have call successors, (4558), 1360 states have call predecessors, (4558), 1360 states have return successors, (4573), 4523 states have call predecessors, (4573), 4558 states have call successors, (4573) [2021-11-25 18:56:29,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14340 states to 14340 states and 19822 transitions. [2021-11-25 18:56:29,494 INFO L78 Accepts]: Start accepts. Automaton has 14340 states and 19822 transitions. Word has length 448 [2021-11-25 18:56:29,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:29,496 INFO L470 AbstractCegarLoop]: Abstraction has 14340 states and 19822 transitions. [2021-11-25 18:56:29,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-25 18:56:29,496 INFO L276 IsEmpty]: Start isEmpty. Operand 14340 states and 19822 transitions. [2021-11-25 18:56:29,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2021-11-25 18:56:29,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:29,529 INFO L514 BasicCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:29,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:56:29,530 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:56:29,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:29,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1531820240, now seen corresponding path program 1 times [2021-11-25 18:56:29,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:29,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812766889] [2021-11-25 18:56:29,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:29,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:29,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3546 trivial. 0 not checked. [2021-11-25 18:56:29,909 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:29,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812766889] [2021-11-25 18:56:29,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812766889] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:29,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:29,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:56:29,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048705799] [2021-11-25 18:56:29,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:29,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:56:29,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:29,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:56:29,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:56:29,913 INFO L87 Difference]: Start difference. First operand 14340 states and 19822 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-25 18:56:34,499 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:56:35,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:35,053 INFO L93 Difference]: Finished difference Result 34105 states and 47141 transitions. [2021-11-25 18:56:35,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:56:35,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 443 [2021-11-25 18:56:35,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:35,167 INFO L225 Difference]: With dead ends: 34105 [2021-11-25 18:56:35,167 INFO L226 Difference]: Without dead ends: 20831 [2021-11-25 18:56:35,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:56:35,220 INFO L933 BasicCegarLoop]: 2590 mSDtfsCounter, 1545 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 4005 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:35,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 4005 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 767 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-11-25 18:56:35,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20831 states. [2021-11-25 18:56:36,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20831 to 20827. [2021-11-25 18:56:36,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20827 states, 12228 states have (on average 1.269299967288191) internal successors, (15521), 12604 states have internal predecessors, (15521), 6611 states have call successors, (6611), 1987 states have call predecessors, (6611), 1987 states have return successors, (6631), 6558 states have call predecessors, (6631), 6611 states have call successors, (6631) [2021-11-25 18:56:36,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20827 states to 20827 states and 28763 transitions. [2021-11-25 18:56:36,316 INFO L78 Accepts]: Start accepts. Automaton has 20827 states and 28763 transitions. Word has length 443 [2021-11-25 18:56:36,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:36,317 INFO L470 AbstractCegarLoop]: Abstraction has 20827 states and 28763 transitions. [2021-11-25 18:56:36,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-25 18:56:36,318 INFO L276 IsEmpty]: Start isEmpty. Operand 20827 states and 28763 transitions. [2021-11-25 18:56:36,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2021-11-25 18:56:36,358 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:36,359 INFO L514 BasicCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:36,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:56:36,359 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:56:36,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:36,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1113411090, now seen corresponding path program 1 times [2021-11-25 18:56:36,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:36,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962865924] [2021-11-25 18:56:36,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:36,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:36,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3571 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3564 trivial. 0 not checked. [2021-11-25 18:56:36,676 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:36,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962865924] [2021-11-25 18:56:36,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962865924] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:36,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:36,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:56:36,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570103965] [2021-11-25 18:56:36,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:36,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:56:36,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:36,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:56:36,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:56:36,679 INFO L87 Difference]: Start difference. First operand 20827 states and 28763 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-25 18:56:41,558 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:56:42,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:42,178 INFO L93 Difference]: Finished difference Result 50297 states and 69482 transitions. [2021-11-25 18:56:42,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:56:42,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 447 [2021-11-25 18:56:42,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:42,325 INFO L225 Difference]: With dead ends: 50297 [2021-11-25 18:56:42,326 INFO L226 Difference]: Without dead ends: 30536 [2021-11-25 18:56:42,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:56:42,381 INFO L933 BasicCegarLoop]: 2598 mSDtfsCounter, 1548 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 4013 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:42,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1552 Valid, 4013 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 769 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2021-11-25 18:56:42,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30536 states. [2021-11-25 18:56:43,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30536 to 30532. [2021-11-25 18:56:43,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30532 states, 17927 states have (on average 1.2690913147765939) internal successors, (22751), 18483 states have internal predecessors, (22751), 9677 states have call successors, (9677), 2927 states have call predecessors, (9677), 2927 states have return successors, (9723), 9597 states have call predecessors, (9723), 9677 states have call successors, (9723) [2021-11-25 18:56:44,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30532 states to 30532 states and 42151 transitions. [2021-11-25 18:56:44,073 INFO L78 Accepts]: Start accepts. Automaton has 30532 states and 42151 transitions. Word has length 447 [2021-11-25 18:56:44,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:44,074 INFO L470 AbstractCegarLoop]: Abstraction has 30532 states and 42151 transitions. [2021-11-25 18:56:44,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-25 18:56:44,075 INFO L276 IsEmpty]: Start isEmpty. Operand 30532 states and 42151 transitions. [2021-11-25 18:56:44,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2021-11-25 18:56:44,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:44,125 INFO L514 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:44,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:56:44,126 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:56:44,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:44,127 INFO L85 PathProgramCache]: Analyzing trace with hash -107686618, now seen corresponding path program 1 times [2021-11-25 18:56:44,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:44,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937591808] [2021-11-25 18:56:44,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:44,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:44,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3731 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3731 trivial. 0 not checked. [2021-11-25 18:56:44,418 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:44,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937591808] [2021-11-25 18:56:44,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937591808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:44,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:44,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:56:44,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502073638] [2021-11-25 18:56:44,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:44,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:56:44,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:44,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:56:44,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:56:44,421 INFO L87 Difference]: Start difference. First operand 30532 states and 42151 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2021-11-25 18:56:49,236 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:56:50,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:50,046 INFO L93 Difference]: Finished difference Result 73735 states and 101575 transitions. [2021-11-25 18:56:50,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:56:50,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 452 [2021-11-25 18:56:50,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:50,201 INFO L225 Difference]: With dead ends: 73735 [2021-11-25 18:56:50,202 INFO L226 Difference]: Without dead ends: 43262 [2021-11-25 18:56:50,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:56:50,273 INFO L933 BasicCegarLoop]: 1642 mSDtfsCounter, 818 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:50,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [818 Valid, 3050 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 572 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2021-11-25 18:56:50,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43262 states. [2021-11-25 18:56:52,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43262 to 43233. [2021-11-25 18:56:52,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43233 states, 25533 states have (on average 1.2618963694043004) internal successors, (32220), 26253 states have internal predecessors, (32220), 13463 states have call successors, (13463), 4236 states have call predecessors, (13463), 4236 states have return successors, (13521), 13305 states have call predecessors, (13521), 13463 states have call successors, (13521) [2021-11-25 18:56:52,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43233 states to 43233 states and 59204 transitions. [2021-11-25 18:56:52,569 INFO L78 Accepts]: Start accepts. Automaton has 43233 states and 59204 transitions. Word has length 452 [2021-11-25 18:56:52,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:52,570 INFO L470 AbstractCegarLoop]: Abstraction has 43233 states and 59204 transitions. [2021-11-25 18:56:52,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2021-11-25 18:56:52,570 INFO L276 IsEmpty]: Start isEmpty. Operand 43233 states and 59204 transitions. [2021-11-25 18:56:52,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2021-11-25 18:56:52,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:52,645 INFO L514 BasicCegarLoop]: trace histogram [35, 29, 29, 29, 29, 29, 29, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:52,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:56:52,645 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:56:52,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:52,646 INFO L85 PathProgramCache]: Analyzing trace with hash 2029449743, now seen corresponding path program 1 times [2021-11-25 18:56:52,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:52,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173997245] [2021-11-25 18:56:52,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:52,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:52,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:53,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3709 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 3687 trivial. 0 not checked. [2021-11-25 18:56:53,293 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:53,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173997245] [2021-11-25 18:56:53,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173997245] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:53,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:53,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:56:53,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183226586] [2021-11-25 18:56:53,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:53,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:56:53,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:53,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:56:53,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:56:53,297 INFO L87 Difference]: Start difference. First operand 43233 states and 59204 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-25 18:56:59,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:01,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:01,754 INFO L93 Difference]: Finished difference Result 100179 states and 137146 transitions. [2021-11-25 18:57:01,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:57:01,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 466 [2021-11-25 18:57:01,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:02,228 INFO L225 Difference]: With dead ends: 100179 [2021-11-25 18:57:02,228 INFO L226 Difference]: Without dead ends: 57315 [2021-11-25 18:57:02,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:57:02,327 INFO L933 BasicCegarLoop]: 2731 mSDtfsCounter, 1573 mSDsluCounter, 2501 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 4722 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:02,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1577 Valid, 4722 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1785 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-11-25 18:57:02,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57315 states. [2021-11-25 18:57:04,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57315 to 57309. [2021-11-25 18:57:04,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57309 states, 33849 states have (on average 1.260893970279772) internal successors, (42680), 34808 states have internal predecessors, (42680), 17793 states have call successors, (17793), 5666 states have call predecessors, (17793), 5666 states have return successors, (17881), 17581 states have call predecessors, (17881), 17793 states have call successors, (17881) [2021-11-25 18:57:04,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57309 states to 57309 states and 78354 transitions. [2021-11-25 18:57:04,647 INFO L78 Accepts]: Start accepts. Automaton has 57309 states and 78354 transitions. Word has length 466 [2021-11-25 18:57:04,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:04,648 INFO L470 AbstractCegarLoop]: Abstraction has 57309 states and 78354 transitions. [2021-11-25 18:57:04,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-25 18:57:04,649 INFO L276 IsEmpty]: Start isEmpty. Operand 57309 states and 78354 transitions. [2021-11-25 18:57:04,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2021-11-25 18:57:04,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:04,700 INFO L514 BasicCegarLoop]: trace histogram [35, 29, 29, 29, 29, 29, 29, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:04,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 18:57:04,700 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:57:04,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:04,701 INFO L85 PathProgramCache]: Analyzing trace with hash -535833492, now seen corresponding path program 1 times [2021-11-25 18:57:04,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:04,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465586418] [2021-11-25 18:57:04,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:04,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:05,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3728 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 3705 trivial. 0 not checked. [2021-11-25 18:57:05,276 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:05,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465586418] [2021-11-25 18:57:05,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465586418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:05,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:05,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:57:05,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913728338] [2021-11-25 18:57:05,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:05,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:57:05,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:05,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:57:05,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:57:05,279 INFO L87 Difference]: Start difference. First operand 57309 states and 78354 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-25 18:57:11,800 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:14,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:14,104 INFO L93 Difference]: Finished difference Result 133017 states and 181826 transitions. [2021-11-25 18:57:14,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:57:14,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 471 [2021-11-25 18:57:14,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:14,371 INFO L225 Difference]: With dead ends: 133017 [2021-11-25 18:57:14,371 INFO L226 Difference]: Without dead ends: 76077 [2021-11-25 18:57:14,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:57:14,497 INFO L933 BasicCegarLoop]: 2739 mSDtfsCounter, 1577 mSDsluCounter, 2506 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 4735 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:14,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1581 Valid, 4735 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1785 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2021-11-25 18:57:14,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76077 states. [2021-11-25 18:57:16,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76077 to 76071. [2021-11-25 18:57:16,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76071 states, 44945 states have (on average 1.2600734230726442) internal successors, (56634), 46222 states have internal predecessors, (56634), 23545 states have call successors, (23545), 7580 states have call predecessors, (23545), 7580 states have return successors, (23675), 23261 states have call predecessors, (23675), 23545 states have call successors, (23675) [2021-11-25 18:57:17,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76071 states to 76071 states and 103854 transitions. [2021-11-25 18:57:17,300 INFO L78 Accepts]: Start accepts. Automaton has 76071 states and 103854 transitions. Word has length 471 [2021-11-25 18:57:17,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:17,302 INFO L470 AbstractCegarLoop]: Abstraction has 76071 states and 103854 transitions. [2021-11-25 18:57:17,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-25 18:57:17,302 INFO L276 IsEmpty]: Start isEmpty. Operand 76071 states and 103854 transitions. [2021-11-25 18:57:17,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2021-11-25 18:57:17,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:17,785 INFO L514 BasicCegarLoop]: trace histogram [35, 29, 29, 29, 29, 29, 29, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:17,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 18:57:17,786 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:57:17,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:17,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1125304306, now seen corresponding path program 1 times [2021-11-25 18:57:17,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:17,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747619466] [2021-11-25 18:57:17,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:17,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:18,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3729 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3705 trivial. 0 not checked. [2021-11-25 18:57:18,115 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:18,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747619466] [2021-11-25 18:57:18,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747619466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:18,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:18,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:57:18,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127518813] [2021-11-25 18:57:18,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:18,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:57:18,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:18,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:57:18,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:57:18,118 INFO L87 Difference]: Start difference. First operand 76071 states and 103854 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-25 18:57:24,441 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:27,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:27,118 INFO L93 Difference]: Finished difference Result 176671 states and 241149 transitions. [2021-11-25 18:57:27,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:57:27,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 473 [2021-11-25 18:57:27,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:27,489 INFO L225 Difference]: With dead ends: 176671 [2021-11-25 18:57:27,489 INFO L226 Difference]: Without dead ends: 100969 [2021-11-25 18:57:27,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:57:27,664 INFO L933 BasicCegarLoop]: 2739 mSDtfsCounter, 1576 mSDsluCounter, 2506 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 4735 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:27,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1580 Valid, 4735 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1785 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-11-25 18:57:27,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100969 states. [2021-11-25 18:57:31,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100969 to 100963. [2021-11-25 18:57:31,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100963 states, 59675 states have (on average 1.2592710515291161) internal successors, (75147), 61375 states have internal predecessors, (75147), 31153 states have call successors, (31153), 10134 states have call predecessors, (31153), 10134 states have return successors, (31337), 30773 states have call predecessors, (31337), 31153 states have call successors, (31337) [2021-11-25 18:57:31,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100963 states to 100963 states and 137637 transitions. [2021-11-25 18:57:31,646 INFO L78 Accepts]: Start accepts. Automaton has 100963 states and 137637 transitions. Word has length 473 [2021-11-25 18:57:31,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:31,647 INFO L470 AbstractCegarLoop]: Abstraction has 100963 states and 137637 transitions. [2021-11-25 18:57:31,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-25 18:57:31,647 INFO L276 IsEmpty]: Start isEmpty. Operand 100963 states and 137637 transitions. [2021-11-25 18:57:31,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2021-11-25 18:57:31,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:31,708 INFO L514 BasicCegarLoop]: trace histogram [36, 30, 30, 30, 30, 30, 30, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:31,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 18:57:31,709 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:57:31,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:31,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1913840093, now seen corresponding path program 1 times [2021-11-25 18:57:31,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:31,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617745099] [2021-11-25 18:57:31,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:31,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:31,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4028 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4025 trivial. 0 not checked. [2021-11-25 18:57:31,964 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:31,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617745099] [2021-11-25 18:57:31,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617745099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:31,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:31,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:57:31,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976547184] [2021-11-25 18:57:31,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:31,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:57:31,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:31,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:57:31,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:57:31,967 INFO L87 Difference]: Start difference. First operand 100963 states and 137637 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) [2021-11-25 18:57:37,122 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:39,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:39,709 INFO L93 Difference]: Finished difference Result 232382 states and 316520 transitions. [2021-11-25 18:57:39,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:57:39,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) Word has length 502 [2021-11-25 18:57:39,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:40,449 INFO L225 Difference]: With dead ends: 232382 [2021-11-25 18:57:40,449 INFO L226 Difference]: Without dead ends: 131788 [2021-11-25 18:57:40,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:57:40,621 INFO L933 BasicCegarLoop]: 2094 mSDtfsCounter, 816 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 3494 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:40,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [818 Valid, 3494 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 714 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2021-11-25 18:57:40,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131788 states.