./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.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_2ab7ea27-58eb-463b-9b27-e83f231161c6/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab7ea27-58eb-463b-9b27-e83f231161c6/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_2ab7ea27-58eb-463b-9b27-e83f231161c6/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab7ea27-58eb-463b-9b27-e83f231161c6/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab7ea27-58eb-463b-9b27-e83f231161c6/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_2ab7ea27-58eb-463b-9b27-e83f231161c6/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 7810d8d46e33762f9d4b240bda17e1c52cc5be371b5b52d10d795bc3c3d449fe --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:20:24,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:20:24,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:20:24,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:20:24,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:20:24,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:20:24,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:20:24,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:20:24,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:20:24,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:20:24,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:20:24,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:20:24,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:20:24,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:20:24,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:20:24,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:20:24,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:20:24,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:20:24,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:20:24,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:20:24,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:20:24,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:20:24,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:20:24,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:20:24,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:20:24,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:20:24,711 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:20:24,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:20:24,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:20:24,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:20:24,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:20:24,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:20:24,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:20:24,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:20:24,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:20:24,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:20:24,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:20:24,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:20:24,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:20:24,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:20:24,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:20:24,727 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab7ea27-58eb-463b-9b27-e83f231161c6/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 20:20:24,777 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:20:24,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:20:24,779 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:20:24,779 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:20:24,786 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:20:24,787 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:20:24,787 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:20:24,787 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:20:24,787 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:20:24,788 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:20:24,789 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:20:24,789 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:20:24,789 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:20:24,790 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:20:24,790 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:20:24,790 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:20:24,791 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:20:24,791 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:20:24,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:20:24,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:20:24,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:20:24,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:20:24,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:20:24,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:20:24,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:20:24,794 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:20:24,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:20:24,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:20:24,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:20:24,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:20:24,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:20:24,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:20:24,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:20:24,797 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:20:24,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:20:24,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:20:24,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:20:24,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:20:24,799 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_2ab7ea27-58eb-463b-9b27-e83f231161c6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab7ea27-58eb-463b-9b27-e83f231161c6/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7810d8d46e33762f9d4b240bda17e1c52cc5be371b5b52d10d795bc3c3d449fe [2021-11-25 20:20:25,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:20:25,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:20:25,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:20:25,143 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:20:25,144 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:20:25,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab7ea27-58eb-463b-9b27-e83f231161c6/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i [2021-11-25 20:20:25,220 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab7ea27-58eb-463b-9b27-e83f231161c6/bin/utaipan-eEHZpOm5b7/data/becb77bd0/4781540a86174e21a5f6989d9d1f94d6/FLAG3a0ed5ca7 [2021-11-25 20:20:26,405 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:20:26,405 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab7ea27-58eb-463b-9b27-e83f231161c6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i [2021-11-25 20:20:26,506 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab7ea27-58eb-463b-9b27-e83f231161c6/bin/utaipan-eEHZpOm5b7/data/becb77bd0/4781540a86174e21a5f6989d9d1f94d6/FLAG3a0ed5ca7 [2021-11-25 20:20:26,593 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab7ea27-58eb-463b-9b27-e83f231161c6/bin/utaipan-eEHZpOm5b7/data/becb77bd0/4781540a86174e21a5f6989d9d1f94d6 [2021-11-25 20:20:26,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:20:26,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:20:26,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:20:26,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:20:26,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:20:26,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:20:26" (1/1) ... [2021-11-25 20:20:26,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56e3bf0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:20:26, skipping insertion in model container [2021-11-25 20:20:26,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:20:26" (1/1) ... [2021-11-25 20:20:26,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:20:26,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:20:35,146 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_2ab7ea27-58eb-463b-9b27-e83f231161c6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i[657888,657901] [2021-11-25 20:20:35,149 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_2ab7ea27-58eb-463b-9b27-e83f231161c6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i[658033,658046] [2021-11-25 20:20:35,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:20:35,373 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:20:36,133 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_2ab7ea27-58eb-463b-9b27-e83f231161c6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i[657888,657901] [2021-11-25 20:20:36,133 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_2ab7ea27-58eb-463b-9b27-e83f231161c6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i[658033,658046] [2021-11-25 20:20:36,141 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:20:36,824 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:20:36,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:20:36 WrapperNode [2021-11-25 20:20:36,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:20:36,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:20:36,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:20:36,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:20:36,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:20:36" (1/1) ... [2021-11-25 20:20:37,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:20:36" (1/1) ... [2021-11-25 20:20:37,617 INFO L137 Inliner]: procedures = 809, calls = 7779, calls flagged for inlining = 391, calls inlined = 360, statements flattened = 15877 [2021-11-25 20:20:37,618 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:20:37,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:20:37,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:20:37,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:20:37,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:20:36" (1/1) ... [2021-11-25 20:20:37,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:20:36" (1/1) ... [2021-11-25 20:20:37,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:20:36" (1/1) ... [2021-11-25 20:20:37,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:20:36" (1/1) ... [2021-11-25 20:20:38,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:20:36" (1/1) ... [2021-11-25 20:20:38,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:20:36" (1/1) ... [2021-11-25 20:20:38,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:20:36" (1/1) ... [2021-11-25 20:20:38,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:20:38,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:20:38,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:20:38,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:20:38,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:20:36" (1/1) ... [2021-11-25 20:20:38,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:20:38,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab7ea27-58eb-463b-9b27-e83f231161c6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:20:38,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab7ea27-58eb-463b-9b27-e83f231161c6/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:20:38,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab7ea27-58eb-463b-9b27-e83f231161c6/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:20:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-25 20:20:38,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-25 20:20:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-25 20:20:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-25 20:20:38,990 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-25 20:20:38,990 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_irq [2021-11-25 20:20:38,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_irq [2021-11-25 20:20:38,990 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_both_serdes [2021-11-25 20:20:38,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_both_serdes [2021-11-25 20:20:38,991 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_xgmac_reg [2021-11-25 20:20:38,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_xgmac_reg [2021-11-25 20:20:38,991 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_reset [2021-11-25 20:20:38,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_reset [2021-11-25 20:20:38,992 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2021-11-25 20:20:38,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2021-11-25 20:20:38,992 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2021-11-25 20:20:38,992 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2021-11-25 20:20:38,992 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 20:20:38,993 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 20:20:38,993 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 20:20:38,993 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 20:20:38,993 INFO L130 BoogieDeclarations]: Found specification of procedure PageTail [2021-11-25 20:20:38,994 INFO L138 BoogieDeclarations]: Found implementation of procedure PageTail [2021-11-25 20:20:38,994 INFO L130 BoogieDeclarations]: Found specification of procedure ql_release_all [2021-11-25 20:20:38,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_release_all [2021-11-25 20:20:38,994 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_none_assert [2021-11-25 20:20:38,994 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_none_assert [2021-11-25 20:20:38,995 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 20:20:38,995 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 20:20:38,995 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 20:20:38,995 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 20:20:38,996 INFO L130 BoogieDeclarations]: Found specification of procedure ql_dump_risc_ram_area [2021-11-25 20:20:38,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_dump_risc_ram_area [2021-11-25 20:20:38,996 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_other_func_reg [2021-11-25 20:20:38,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_other_func_reg [2021-11-25 20:20:38,996 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 20:20:38,997 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 20:20:38,997 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-25 20:20:38,997 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-25 20:20:38,997 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_xgmac_regs [2021-11-25 20:20:38,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_xgmac_regs [2021-11-25 20:20:38,998 INFO L130 BoogieDeclarations]: Found specification of procedure ql_update_buffer_queues [2021-11-25 20:20:38,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_update_buffer_queues [2021-11-25 20:20:38,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_104 [2021-11-25 20:20:38,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_104 [2021-11-25 20:20:38,999 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_cam_entries [2021-11-25 20:20:38,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_cam_entries [2021-11-25 20:20:38,999 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_mem_resources [2021-11-25 20:20:38,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_mem_resources [2021-11-25 20:20:39,000 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-25 20:20:39,000 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-25 20:20:39,000 INFO L130 BoogieDeclarations]: Found specification of procedure ql_eeh_close [2021-11-25 20:20:39,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_eeh_close [2021-11-25 20:20:39,001 INFO L130 BoogieDeclarations]: Found specification of procedure netif_receive_skb [2021-11-25 20:20:39,017 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_receive_skb [2021-11-25 20:20:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 20:20:39,017 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 20:20:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure skb_record_rx_queue [2021-11-25 20:20:39,018 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_record_rx_queue [2021-11-25 20:20:39,018 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-25 20:20:39,018 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-25 20:20:39,018 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 20:20:39,019 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 20:20:39,019 INFO L130 BoogieDeclarations]: Found specification of procedure ql_build_coredump_seg_header [2021-11-25 20:20:39,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_build_coredump_seg_header [2021-11-25 20:20:39,019 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_close [2021-11-25 20:20:39,019 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_close [2021-11-25 20:20:39,020 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_mb_sts [2021-11-25 20:20:39,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_mb_sts [2021-11-25 20:20:39,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 20:20:39,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 20:20:39,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:20:39,021 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-25 20:20:39,021 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-25 20:20:39,021 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_offset [2021-11-25 20:20:39,021 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_offset [2021-11-25 20:20:39,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 20:20:39,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 20:20:39,022 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2021-11-25 20:20:39,022 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2021-11-25 20:20:39,022 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-25 20:20:39,023 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-25 20:20:39,023 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write32 [2021-11-25 20:20:39,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write32 [2021-11-25 20:20:39,023 INFO L130 BoogieDeclarations]: Found specification of procedure ql_cam_route_initialize [2021-11-25 20:20:39,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_cam_route_initialize [2021-11-25 20:20:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-25 20:20:39,024 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-25 20:20:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 20:20:39,024 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 20:20:39,025 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_other_func_reg_rdy [2021-11-25 20:20:39,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_other_func_reg_rdy [2021-11-25 20:20:39,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:20:39,025 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_mpi_reg [2021-11-25 20:20:39,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_mpi_reg [2021-11-25 20:20:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 20:20:39,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 20:20:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 20:20:39,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 20:20:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2021-11-25 20:20:39,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_calloc [2021-11-25 20:20:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-25 20:20:39,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-25 20:20:39,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-25 20:20:39,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-25 20:20:39,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:20:39,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 20:20:39,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 20:20:39,029 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 20:20:39,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 20:20:39,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:20:39,029 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 20:20:39,030 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_unlock [2021-11-25 20:20:39,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_unlock [2021-11-25 20:20:39,030 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_8012_flash_params [2021-11-25 20:20:39,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_8012_flash_params [2021-11-25 20:20:39,031 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-25 20:20:39,031 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-25 20:20:39,031 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_other_func_serdes_reg [2021-11-25 20:20:39,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_other_func_serdes_reg [2021-11-25 20:20:39,032 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 20:20:39,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 20:20:39,032 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_hw_lock_of_ql_adapter [2021-11-25 20:20:39,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_hw_lock_of_ql_adapter [2021-11-25 20:20:39,032 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 20:20:39,033 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 20:20:39,033 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 20:20:39,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 20:20:39,033 INFO L130 BoogieDeclarations]: Found specification of procedure ql_8000_port_initialize [2021-11-25 20:20:39,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_8000_port_initialize [2021-11-25 20:20:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 20:20:39,034 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 20:20:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_hw_lock_of_ql_adapter [2021-11-25 20:20:39,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_hw_lock_of_ql_adapter [2021-11-25 20:20:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:20:39,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:20:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure ql_8012_port_initialize [2021-11-25 20:20:39,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_8012_port_initialize [2021-11-25 20:20:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_flash_word [2021-11-25 20:20:39,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_flash_word [2021-11-25 20:20:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-25 20:20:39,036 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-25 20:20:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 20:20:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure csum_tcpudp_magic [2021-11-25 20:20:39,037 INFO L138 BoogieDeclarations]: Found implementation of procedure csum_tcpudp_magic [2021-11-25 20:20:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-25 20:20:39,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-25 20:20:39,053 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2021-11-25 20:20:39,053 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2021-11-25 20:20:39,053 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 20:20:39,053 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 20:20:39,054 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-25 20:20:39,054 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_cq_idx [2021-11-25 20:20:39,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_cq_idx [2021-11-25 20:20:39,054 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 20:20:39,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 20:20:39,055 INFO L130 BoogieDeclarations]: Found specification of procedure ql_link_on [2021-11-25 20:20:39,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_link_on [2021-11-25 20:20:39,055 INFO L130 BoogieDeclarations]: Found specification of procedure napi_gro_receive [2021-11-25 20:20:39,055 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_gro_receive [2021-11-25 20:20:39,055 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 20:20:39,056 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 20:20:39,056 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-11-25 20:20:39,056 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-11-25 20:20:39,056 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 20:20:39,056 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 20:20:39,057 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-25 20:20:39,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-25 20:20:39,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 20:20:39,057 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 20:20:39,057 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-25 20:20:39,058 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-25 20:20:39,058 INFO L130 BoogieDeclarations]: Found specification of procedure ql_update_cq [2021-11-25 20:20:39,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_update_cq [2021-11-25 20:20:39,058 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-25 20:20:39,058 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-25 20:20:39,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:20:39,059 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 20:20:39,059 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 20:20:39,059 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_curr_sbuf [2021-11-25 20:20:39,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_curr_sbuf [2021-11-25 20:20:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure ql_realign_skb [2021-11-25 20:20:39,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_realign_skb [2021-11-25 20:20:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_routing_entries [2021-11-25 20:20:39,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_routing_entries [2021-11-25 20:20:39,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:20:39,061 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-25 20:20:39,061 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-25 20:20:39,061 INFO L130 BoogieDeclarations]: Found specification of procedure ql_process_mac_split_rx_intr [2021-11-25 20:20:39,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_process_mac_split_rx_intr [2021-11-25 20:20:39,062 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_suspend [2021-11-25 20:20:39,062 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_suspend [2021-11-25 20:20:39,062 INFO L130 BoogieDeclarations]: Found specification of procedure __vlan_hwaccel_put_tag [2021-11-25 20:20:39,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __vlan_hwaccel_put_tag [2021-11-25 20:20:39,062 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-25 20:20:39,063 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-25 20:20:39,063 INFO L130 BoogieDeclarations]: Found specification of procedure ql_cancel_all_work_sync [2021-11-25 20:20:39,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_cancel_all_work_sync [2021-11-25 20:20:39,063 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 20:20:39,063 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 20:20:39,064 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 20:20:39,064 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 20:20:39,064 INFO L130 BoogieDeclarations]: Found specification of procedure pci_restore_state [2021-11-25 20:20:39,064 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_restore_state [2021-11-25 20:20:39,064 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-25 20:20:39,065 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-25 20:20:39,065 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-25 20:20:39,065 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-25 20:20:39,065 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-11-25 20:20:39,065 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-11-25 20:20:39,066 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 20:20:39,066 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 20:20:39,066 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mb_get_port_cfg [2021-11-25 20:20:39,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mb_get_port_cfg [2021-11-25 20:20:39,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:20:39,067 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-11-25 20:20:39,067 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-11-25 20:20:39,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 20:20:39,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 20:20:39,068 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_down [2021-11-25 20:20:39,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_down [2021-11-25 20:20:39,068 INFO L130 BoogieDeclarations]: Found specification of procedure ql_queue_fw_error [2021-11-25 20:20:39,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_queue_fw_error [2021-11-25 20:20:39,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_103 [2021-11-25 20:20:39,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_103 [2021-11-25 20:20:39,069 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mpi_handler [2021-11-25 20:20:39,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mpi_handler [2021-11-25 20:20:39,069 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_xgmac_reg64 [2021-11-25 20:20:39,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_xgmac_reg64 [2021-11-25 20:20:39,070 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-25 20:20:39,070 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-25 20:20:39,070 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mb_set_mgmnt_traffic_ctl [2021-11-25 20:20:39,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mb_set_mgmnt_traffic_ctl [2021-11-25 20:20:39,070 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_other_func_reg [2021-11-25 20:20:39,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_other_func_reg [2021-11-25 20:20:39,071 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_reg_rdy [2021-11-25 20:20:39,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_reg_rdy [2021-11-25 20:20:39,071 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-25 20:20:39,072 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-25 20:20:39,072 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mb_set_led_cfg [2021-11-25 20:20:39,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mb_set_led_cfg [2021-11-25 20:20:39,072 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_cfg [2021-11-25 20:20:39,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_cfg [2021-11-25 20:20:39,073 INFO L130 BoogieDeclarations]: Found specification of procedure ql_lbq_block_size [2021-11-25 20:20:39,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_lbq_block_size [2021-11-25 20:20:39,073 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-25 20:20:39,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-25 20:20:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure netif_get_num_default_rss_queues [2021-11-25 20:20:39,074 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_get_num_default_rss_queues [2021-11-25 20:20:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_ets_regs [2021-11-25 20:20:39,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_ets_regs [2021-11-25 20:20:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_cfg [2021-11-25 20:20:39,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_cfg [2021-11-25 20:20:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-25 20:20:39,075 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-25 20:20:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-25 20:20:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read32 [2021-11-25 20:20:39,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read32 [2021-11-25 20:20:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_intr_states [2021-11-25 20:20:39,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_intr_states [2021-11-25 20:20:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2021-11-25 20:20:39,077 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2021-11-25 20:20:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-25 20:20:39,077 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-25 20:20:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 20:20:39,077 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 20:20:39,078 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-25 20:20:39,078 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-25 20:20:39,078 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-25 20:20:39,078 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-25 20:20:39,078 INFO L130 BoogieDeclarations]: Found specification of procedure ql_enable_completion_interrupt [2021-11-25 20:20:39,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_enable_completion_interrupt [2021-11-25 20:20:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 20:20:39,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 20:20:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 20:20:39,079 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 20:20:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_send [2021-11-25 20:20:39,080 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_send [2021-11-25 20:20:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2021-11-25 20:20:39,080 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2021-11-25 20:20:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-25 20:20:39,081 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-25 20:20:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2021-11-25 20:20:39,081 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2021-11-25 20:20:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-25 20:20:39,081 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-25 20:20:39,082 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_regs_len [2021-11-25 20:20:39,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_regs_len [2021-11-25 20:20:39,082 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_io_resume [2021-11-25 20:20:39,082 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_io_resume [2021-11-25 20:20:39,082 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 20:20:39,082 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 20:20:39,083 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_shutdown [2021-11-25 20:20:39,083 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_shutdown [2021-11-25 20:20:39,083 INFO L130 BoogieDeclarations]: Found specification of procedure ql_update_mac_hdr_len [2021-11-25 20:20:39,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_update_mac_hdr_len [2021-11-25 20:20:39,083 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mailbox_command [2021-11-25 20:20:39,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mailbox_command [2021-11-25 20:20:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 20:20:39,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 20:20:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_irq_mask [2021-11-25 20:20:39,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_irq_mask [2021-11-25 20:20:39,085 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-25 20:20:39,085 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-25 20:20:39,085 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 20:20:39,085 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 20:20:39,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 20:20:39,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 20:20:39,086 INFO L130 BoogieDeclarations]: Found specification of procedure __qlge_vlan_rx_add_vid [2021-11-25 20:20:39,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __qlge_vlan_rx_add_vid [2021-11-25 20:20:39,086 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-25 20:20:39,086 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-25 20:20:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:20:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure ql_queue_asic_error [2021-11-25 20:20:39,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_queue_asic_error [2021-11-25 20:20:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-25 20:20:39,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-25 20:20:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_xgmac_reg [2021-11-25 20:20:39,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_xgmac_reg [2021-11-25 20:20:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_up [2021-11-25 20:20:39,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_up [2021-11-25 20:20:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 20:20:39,089 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 20:20:39,089 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_mac_addr_reg [2021-11-25 20:20:39,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_mac_addr_reg [2021-11-25 20:20:39,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_qlge_driver_exit_16_2 [2021-11-25 20:20:39,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_qlge_driver_exit_16_2 [2021-11-25 20:20:39,090 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2021-11-25 20:20:39,090 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2021-11-25 20:20:39,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 20:20:39,090 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_serdes_reg [2021-11-25 20:20:39,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_serdes_reg [2021-11-25 20:20:39,090 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 20:20:39,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 20:20:39,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 20:20:39,091 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_open [2021-11-25 20:20:39,091 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_open [2021-11-25 20:20:39,091 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 20:20:39,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 20:20:39,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-25 20:20:39,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-25 20:20:39,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 20:20:39,092 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 20:20:39,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 20:20:39,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 20:20:39,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 20:20:39,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 20:20:39,093 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_probe [2021-11-25 20:20:39,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_probe [2021-11-25 20:20:39,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-25 20:20:39,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-25 20:20:39,094 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_rx_buffers [2021-11-25 20:20:39,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_rx_buffers [2021-11-25 20:20:39,095 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_trylock [2021-11-25 20:20:39,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_trylock [2021-11-25 20:20:39,095 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mb_set_port_cfg [2021-11-25 20:20:39,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mb_set_port_cfg [2021-11-25 20:20:39,095 INFO L130 BoogieDeclarations]: Found specification of procedure __get_order [2021-11-25 20:20:39,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __get_order [2021-11-25 20:20:39,096 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_spinlock [2021-11-25 20:20:39,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_spinlock [2021-11-25 20:20:39,096 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-25 20:20:39,096 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-25 20:20:39,097 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:20:39,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:20:39,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-25 20:20:39,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-25 20:20:39,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-25 20:20:39,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-25 20:20:39,098 INFO L130 BoogieDeclarations]: Found specification of procedure ql_disable_completion_interrupt [2021-11-25 20:20:39,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_disable_completion_interrupt [2021-11-25 20:20:39,098 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_fill_page_desc [2021-11-25 20:20:39,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_fill_page_desc [2021-11-25 20:20:39,099 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-25 20:20:39,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-25 20:20:39,099 INFO L130 BoogieDeclarations]: Found specification of procedure ql_clear_routing_entries [2021-11-25 20:20:39,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_clear_routing_entries [2021-11-25 20:20:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-25 20:20:39,100 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-25 20:20:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure ql_link_off [2021-11-25 20:20:39,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_link_off [2021-11-25 20:20:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-25 20:20:39,101 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-25 20:20:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-25 20:20:39,101 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-25 20:20:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_tx_timeout [2021-11-25 20:20:39,102 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_tx_timeout [2021-11-25 20:20:39,102 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-11-25 20:20:39,102 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-11-25 20:20:39,102 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_mpi_regs [2021-11-25 20:20:39,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_mpi_regs [2021-11-25 20:20:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-25 20:20:39,103 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-25 20:20:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-25 20:20:39,103 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-25 20:20:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_subqueue [2021-11-25 20:20:39,104 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_subqueue [2021-11-25 20:20:39,104 INFO L130 BoogieDeclarations]: Found specification of procedure ql_release_adapter_resources [2021-11-25 20:20:39,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_release_adapter_resources [2021-11-25 20:20:39,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 20:20:39,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 20:20:39,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 20:20:39,105 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-25 20:20:39,105 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-25 20:20:39,105 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_rx_resources [2021-11-25 20:20:39,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_rx_resources [2021-11-25 20:20:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-25 20:20:39,106 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-25 20:20:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure ql_disable_interrupts [2021-11-25 20:20:39,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_disable_interrupts [2021-11-25 20:20:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure ql_soft_reset_mpi_risc [2021-11-25 20:20:39,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_soft_reset_mpi_risc [2021-11-25 20:20:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-25 20:20:39,107 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-25 20:20:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_remove [2021-11-25 20:20:39,107 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_remove [2021-11-25 20:20:39,108 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_set_multicast_list [2021-11-25 20:20:39,108 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_set_multicast_list [2021-11-25 20:20:39,108 INFO L130 BoogieDeclarations]: Found specification of procedure ql_tx_ring_clean [2021-11-25 20:20:39,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_tx_ring_clean [2021-11-25 20:20:39,108 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-25 20:20:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-25 20:20:39,109 INFO L130 BoogieDeclarations]: Found specification of procedure skb_fill_page_desc [2021-11-25 20:20:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_fill_page_desc [2021-11-25 20:20:39,109 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-25 20:20:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-25 20:20:39,109 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_mpi_reg [2021-11-25 20:20:39,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_mpi_reg [2021-11-25 20:20:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure ql_clean_inbound_rx_ring [2021-11-25 20:20:39,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_clean_inbound_rx_ring [2021-11-25 20:20:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_subqueue [2021-11-25 20:20:39,110 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_subqueue [2021-11-25 20:20:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 20:20:39,111 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 20:20:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-25 20:20:39,111 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-25 20:20:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 20:20:39,111 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 20:20:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2021-11-25 20:20:39,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2021-11-25 20:20:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-25 20:20:39,112 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-25 20:20:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:20:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure ql_validate_flash [2021-11-25 20:20:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_validate_flash [2021-11-25 20:20:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 20:20:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 20:20:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-25 20:20:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-25 20:20:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 20:20:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 20:20:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 20:20:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 20:20:39,115 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_8000_flash_params [2021-11-25 20:20:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_8000_flash_params [2021-11-25 20:20:39,115 INFO L130 BoogieDeclarations]: Found specification of procedure ql_check_lb_frame [2021-11-25 20:20:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_check_lb_frame [2021-11-25 20:20:39,115 INFO L130 BoogieDeclarations]: Found specification of procedure ql_categorize_rx_err [2021-11-25 20:20:39,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_categorize_rx_err [2021-11-25 20:20:39,116 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 20:20:39,116 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 20:20:39,116 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_initialize [2021-11-25 20:20:39,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_initialize [2021-11-25 20:20:39,116 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-11-25 20:20:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-11-25 20:20:39,117 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_sh_reg [2021-11-25 20:20:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_sh_reg [2021-11-25 20:20:39,117 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-25 20:20:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-25 20:20:39,118 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_db_reg [2021-11-25 20:20:39,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_db_reg [2021-11-25 20:20:39,118 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 20:20:39,118 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 20:20:39,118 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 20:20:39,119 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 20:20:39,119 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-25 20:20:39,119 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-25 20:20:39,119 INFO L130 BoogieDeclarations]: Found specification of procedure ql_unmap_send [2021-11-25 20:20:39,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_unmap_send [2021-11-25 20:20:39,120 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-25 20:20:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-25 20:20:39,120 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_routing_reg [2021-11-25 20:20:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_routing_reg [2021-11-25 20:20:39,120 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-25 20:20:39,121 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-25 20:20:39,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 20:20:39,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 20:20:39,121 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_mac_addr_reg [2021-11-25 20:20:39,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_mac_addr_reg [2021-11-25 20:20:39,121 INFO L130 BoogieDeclarations]: Found specification of procedure ql_own_firmware [2021-11-25 20:20:39,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_own_firmware [2021-11-25 20:20:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-25 20:20:39,122 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-25 20:20:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_curr_lchunk [2021-11-25 20:20:39,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_curr_lchunk [2021-11-25 20:20:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-25 20:20:39,123 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-25 20:20:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:20:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_mac_addr [2021-11-25 20:20:39,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_mac_addr [2021-11-25 20:20:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 20:20:39,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 20:20:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_trap [2021-11-25 20:20:39,124 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_trap [2021-11-25 20:20:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_resume [2021-11-25 20:20:39,124 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_resume [2021-11-25 20:20:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure ql_core_dump [2021-11-25 20:20:39,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_core_dump [2021-11-25 20:20:40,885 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:20:40,892 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:20:41,000 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 20:21:06,716 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 20:21:07,610 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:21:13,510 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:21:13,510 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-25 20:21:13,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:21:13 BoogieIcfgContainer [2021-11-25 20:21:13,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:21:13,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:21:13,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:21:13,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:21:13,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:20:26" (1/3) ... [2021-11-25 20:21:13,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ef9869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:21:13, skipping insertion in model container [2021-11-25 20:21:13,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:20:36" (2/3) ... [2021-11-25 20:21:13,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ef9869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:21:13, skipping insertion in model container [2021-11-25 20:21:13,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:21:13" (3/3) ... [2021-11-25 20:21:13,526 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i [2021-11-25 20:21:13,532 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:21:13,532 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 20:21:13,608 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:21:13,615 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:21:13,616 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 20:21:13,727 INFO L276 IsEmpty]: Start isEmpty. Operand has 3815 states, 2282 states have (on average 1.3150744960560912) internal successors, (3001), 2345 states have internal predecessors, (3001), 1288 states have call successors, (1288), 244 states have call predecessors, (1288), 243 states have return successors, (1281), 1265 states have call predecessors, (1281), 1281 states have call successors, (1281) [2021-11-25 20:21:13,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-11-25 20:21:13,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:13,777 INFO L514 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:21:13,778 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:21:13,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:13,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1601349394, now seen corresponding path program 1 times [2021-11-25 20:21:13,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:13,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366909551] [2021-11-25 20:21:13,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:13,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:15,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2021-11-25 20:21:15,299 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:15,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366909551] [2021-11-25 20:21:15,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366909551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:15,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:15,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:21:15,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580154068] [2021-11-25 20:21:15,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:15,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:21:15,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:15,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:21:15,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:21:15,365 INFO L87 Difference]: Start difference. First operand has 3815 states, 2282 states have (on average 1.3150744960560912) internal successors, (3001), 2345 states have internal predecessors, (3001), 1288 states have call successors, (1288), 244 states have call predecessors, (1288), 243 states have return successors, (1281), 1265 states have call predecessors, (1281), 1281 states have call successors, (1281) Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-25 20:21:21,825 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:21:25,231 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:29,061 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:30,258 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:31,673 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:34,809 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:38,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:38,848 INFO L93 Difference]: Finished difference Result 10879 states and 15961 transitions. [2021-11-25 20:21:38,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:21:38,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 257 [2021-11-25 20:21:38,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:38,959 INFO L225 Difference]: With dead ends: 10879 [2021-11-25 20:21:38,959 INFO L226 Difference]: Without dead ends: 7035 [2021-11-25 20:21:38,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:21:39,001 INFO L933 BasicCegarLoop]: 6385 mSDtfsCounter, 4800 mSDsluCounter, 5494 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 19 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 11116 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:39,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4802 Valid, 11116 Invalid, 1739 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 1716 Invalid, 4 Unknown, 0 Unchecked, 22.8s Time] [2021-11-25 20:21:39,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7035 states. [2021-11-25 20:21:39,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7035 to 7031. [2021-11-25 20:21:39,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7031 states, 4263 states have (on average 1.316443818906873) internal successors, (5612), 4382 states have internal predecessors, (5612), 2311 states have call successors, (2311), 455 states have call predecessors, (2311), 455 states have return successors, (2313), 2278 states have call predecessors, (2313), 2311 states have call successors, (2313) [2021-11-25 20:21:39,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7031 states to 7031 states and 10236 transitions. [2021-11-25 20:21:39,593 INFO L78 Accepts]: Start accepts. Automaton has 7031 states and 10236 transitions. Word has length 257 [2021-11-25 20:21:39,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:39,595 INFO L470 AbstractCegarLoop]: Abstraction has 7031 states and 10236 transitions. [2021-11-25 20:21:39,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-25 20:21:39,596 INFO L276 IsEmpty]: Start isEmpty. Operand 7031 states and 10236 transitions. [2021-11-25 20:21:39,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-25 20:21:39,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:39,613 INFO L514 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 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] [2021-11-25 20:21:39,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:21:39,614 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:21:39,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:39,615 INFO L85 PathProgramCache]: Analyzing trace with hash 276918540, now seen corresponding path program 1 times [2021-11-25 20:21:39,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:39,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052868007] [2021-11-25 20:21:39,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:39,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:40,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1262 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1262 trivial. 0 not checked. [2021-11-25 20:21:40,265 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:40,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052868007] [2021-11-25 20:21:40,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052868007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:40,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:40,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:21:40,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702101981] [2021-11-25 20:21:40,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:40,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:21:40,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:40,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:21:40,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:21:40,270 INFO L87 Difference]: Start difference. First operand 7031 states and 10236 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-25 20:21:43,280 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:21:45,911 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:48,427 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:50,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:58,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:58,405 INFO L93 Difference]: Finished difference Result 17106 states and 24806 transitions. [2021-11-25 20:21:58,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:21:58,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 253 [2021-11-25 20:21:58,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:58,670 INFO L225 Difference]: With dead ends: 17106 [2021-11-25 20:21:58,670 INFO L226 Difference]: Without dead ends: 10112 [2021-11-25 20:21:58,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:21:58,726 INFO L933 BasicCegarLoop]: 5736 mSDtfsCounter, 3211 mSDsluCounter, 5378 mSDsCounter, 0 mSdLazyCounter, 1667 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3217 SdHoareTripleChecker+Valid, 10392 SdHoareTripleChecker+Invalid, 1677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1667 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:58,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3217 Valid, 10392 Invalid, 1677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1667 Invalid, 3 Unknown, 0 Unchecked, 17.5s Time] [2021-11-25 20:21:58,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10112 states. [2021-11-25 20:21:59,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10112 to 10104. [2021-11-25 20:21:59,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10104 states, 6135 states have (on average 1.3136104319478403) internal successors, (8059), 6306 states have internal predecessors, (8059), 3271 states have call successors, (3271), 697 states have call predecessors, (3271), 696 states have return successors, (3279), 3222 states have call predecessors, (3279), 3271 states have call successors, (3279) [2021-11-25 20:21:59,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10104 states to 10104 states and 14609 transitions. [2021-11-25 20:21:59,412 INFO L78 Accepts]: Start accepts. Automaton has 10104 states and 14609 transitions. Word has length 253 [2021-11-25 20:21:59,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:59,413 INFO L470 AbstractCegarLoop]: Abstraction has 10104 states and 14609 transitions. [2021-11-25 20:21:59,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-25 20:21:59,417 INFO L276 IsEmpty]: Start isEmpty. Operand 10104 states and 14609 transitions. [2021-11-25 20:21:59,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-11-25 20:21:59,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:59,437 INFO L514 BasicCegarLoop]: trace histogram [22, 18, 18, 18, 18, 18, 18, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:21:59,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:21:59,437 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:21:59,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:59,438 INFO L85 PathProgramCache]: Analyzing trace with hash 548528340, now seen corresponding path program 1 times [2021-11-25 20:21:59,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:59,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774039507] [2021-11-25 20:21:59,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:59,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:00,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1401 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1398 trivial. 0 not checked. [2021-11-25 20:22:00,289 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:00,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774039507] [2021-11-25 20:22:00,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774039507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:00,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:00,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:22:00,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353107706] [2021-11-25 20:22:00,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:00,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:22:00,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:00,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:22:00,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:22:00,292 INFO L87 Difference]: Start difference. First operand 10104 states and 14609 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-25 20:22:03,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:22:06,564 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:08,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:10,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:20,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:20,597 INFO L93 Difference]: Finished difference Result 24257 states and 35107 transitions. [2021-11-25 20:22:20,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:22:20,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 304 [2021-11-25 20:22:20,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:20,704 INFO L225 Difference]: With dead ends: 24257 [2021-11-25 20:22:20,705 INFO L226 Difference]: Without dead ends: 14190 [2021-11-25 20:22:20,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:22:20,760 INFO L933 BasicCegarLoop]: 8752 mSDtfsCounter, 4731 mSDsluCounter, 5425 mSDsCounter, 0 mSdLazyCounter, 2286 mSolverCounterSat, 15 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4733 SdHoareTripleChecker+Valid, 13415 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2286 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:20,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4733 Valid, 13415 Invalid, 2304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2286 Invalid, 3 Unknown, 0 Unchecked, 19.7s Time] [2021-11-25 20:22:20,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14190 states. [2021-11-25 20:22:21,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14190 to 14185. [2021-11-25 20:22:21,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14185 states, 8641 states have (on average 1.3168614743663927) internal successors, (11379), 8880 states have internal predecessors, (11379), 4565 states have call successors, (4565), 978 states have call predecessors, (4565), 977 states have return successors, (4575), 4496 states have call predecessors, (4575), 4565 states have call successors, (4575) [2021-11-25 20:22:21,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14185 states to 14185 states and 20519 transitions. [2021-11-25 20:22:21,601 INFO L78 Accepts]: Start accepts. Automaton has 14185 states and 20519 transitions. Word has length 304 [2021-11-25 20:22:21,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:21,604 INFO L470 AbstractCegarLoop]: Abstraction has 14185 states and 20519 transitions. [2021-11-25 20:22:21,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-25 20:22:21,604 INFO L276 IsEmpty]: Start isEmpty. Operand 14185 states and 20519 transitions. [2021-11-25 20:22:21,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2021-11-25 20:22:21,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:21,630 INFO L514 BasicCegarLoop]: trace histogram [24, 18, 18, 18, 18, 18, 18, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:22:21,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:22:21,631 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:22:21,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:21,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1904039553, now seen corresponding path program 1 times [2021-11-25 20:22:21,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:21,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772810849] [2021-11-25 20:22:21,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:21,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:22,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1581 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1581 trivial. 0 not checked. [2021-11-25 20:22:22,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:22,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772810849] [2021-11-25 20:22:22,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772810849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:22,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:22,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:22:22,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356261344] [2021-11-25 20:22:22,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:22,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:22:22,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:22,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:22:22,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:22:22,450 INFO L87 Difference]: Start difference. First operand 14185 states and 20519 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (40), 3 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-25 20:22:26,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:22:28,699 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:30,741 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:32,776 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:34,827 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:37,484 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:39,540 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:42,582 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:47,985 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:54,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:54,234 INFO L93 Difference]: Finished difference Result 28381 states and 41330 transitions. [2021-11-25 20:22:54,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:22:54,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (40), 3 states have call predecessors, (40), 2 states have call successors, (40) Word has length 366 [2021-11-25 20:22:54,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:54,315 INFO L225 Difference]: With dead ends: 28381 [2021-11-25 20:22:54,315 INFO L226 Difference]: Without dead ends: 14233 [2021-11-25 20:22:54,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:22:54,472 INFO L933 BasicCegarLoop]: 4716 mSDtfsCounter, 5 mSDsluCounter, 16459 mSDsCounter, 0 mSdLazyCounter, 3110 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18851 SdHoareTripleChecker+Invalid, 3120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3110 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:54,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 18851 Invalid, 3120 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 3110 Invalid, 7 Unknown, 0 Unchecked, 31.1s Time] [2021-11-25 20:22:54,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14233 states. [2021-11-25 20:22:55,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14233 to 14209. [2021-11-25 20:22:55,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14209 states, 8659 states have (on average 1.3162027947799977) internal successors, (11397), 8898 states have internal predecessors, (11397), 4565 states have call successors, (4565), 978 states have call predecessors, (4565), 983 states have return successors, (4657), 4502 states have call predecessors, (4657), 4565 states have call successors, (4657) [2021-11-25 20:22:55,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14209 states to 14209 states and 20619 transitions. [2021-11-25 20:22:55,240 INFO L78 Accepts]: Start accepts. Automaton has 14209 states and 20619 transitions. Word has length 366 [2021-11-25 20:22:55,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:55,245 INFO L470 AbstractCegarLoop]: Abstraction has 14209 states and 20619 transitions. [2021-11-25 20:22:55,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (40), 3 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-25 20:22:55,246 INFO L276 IsEmpty]: Start isEmpty. Operand 14209 states and 20619 transitions. [2021-11-25 20:22:55,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2021-11-25 20:22:55,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:55,271 INFO L514 BasicCegarLoop]: trace histogram [24, 18, 18, 18, 18, 18, 18, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:22:55,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:22:55,271 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:22:55,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:55,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1671583233, now seen corresponding path program 1 times [2021-11-25 20:22:55,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:55,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190396132] [2021-11-25 20:22:55,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:55,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:56,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1616 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 1592 trivial. 0 not checked. [2021-11-25 20:22:56,052 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:56,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190396132] [2021-11-25 20:22:56,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190396132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:56,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:56,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:22:56,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884868578] [2021-11-25 20:22:56,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:56,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:22:56,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:56,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:22:56,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:22:56,056 INFO L87 Difference]: Start difference. First operand 14209 states and 20619 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-11-25 20:23:00,887 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:23:03,965 WARN L534 Checker$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 20:23:09,432 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:23:11,156 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:23:12,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:23:15,655 WARN L534 Checker$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 20:23:23,508 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:23:25,802 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:23:27,961 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:23:30,371 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:23:32,615 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:23:34,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:23:34,437 INFO L93 Difference]: Finished difference Result 35678 states and 51655 transitions. [2021-11-25 20:23:34,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:23:34,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 398 [2021-11-25 20:23:34,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:23:34,553 INFO L225 Difference]: With dead ends: 35678 [2021-11-25 20:23:34,554 INFO L226 Difference]: Without dead ends: 21506 [2021-11-25 20:23:34,598 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 20:23:34,599 INFO L933 BasicCegarLoop]: 9911 mSDtfsCounter, 8078 mSDsluCounter, 7747 mSDsCounter, 0 mSdLazyCounter, 5219 mSolverCounterSat, 934 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8083 SdHoareTripleChecker+Valid, 16250 SdHoareTripleChecker+Invalid, 6161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 934 IncrementalHoareTripleChecker+Valid, 5219 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:23:34,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8083 Valid, 16250 Invalid, 6161 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [934 Valid, 5219 Invalid, 8 Unknown, 0 Unchecked, 37.6s Time] [2021-11-25 20:23:34,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21506 states. [2021-11-25 20:23:35,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21506 to 21498. [2021-11-25 20:23:35,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21498 states, 13122 states have (on average 1.3159579332418838) internal successors, (17268), 13491 states have internal predecessors, (17268), 6822 states have call successors, (6822), 1543 states have call predecessors, (6822), 1552 states have return successors, (6969), 6727 states have call predecessors, (6969), 6822 states have call successors, (6969) [2021-11-25 20:23:35,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21498 states to 21498 states and 31059 transitions. [2021-11-25 20:23:35,713 INFO L78 Accepts]: Start accepts. Automaton has 21498 states and 31059 transitions. Word has length 398 [2021-11-25 20:23:35,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:23:35,714 INFO L470 AbstractCegarLoop]: Abstraction has 21498 states and 31059 transitions. [2021-11-25 20:23:35,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-11-25 20:23:35,715 INFO L276 IsEmpty]: Start isEmpty. Operand 21498 states and 31059 transitions. [2021-11-25 20:23:35,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2021-11-25 20:23:35,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:23:35,748 INFO L514 BasicCegarLoop]: trace histogram [28, 19, 19, 19, 19, 19, 19, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:23:35,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:23:35,748 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:23:35,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:23:35,749 INFO L85 PathProgramCache]: Analyzing trace with hash -51497267, now seen corresponding path program 1 times [2021-11-25 20:23:35,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:23:35,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744698926] [2021-11-25 20:23:35,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:35,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:23:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:36,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1986 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1986 trivial. 0 not checked. [2021-11-25 20:23:36,924 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:23:36,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744698926] [2021-11-25 20:23:36,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744698926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:23:36,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:23:36,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 20:23:36,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340075321] [2021-11-25 20:23:36,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:23:36,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:23:36,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:23:36,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:23:36,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:23:36,927 INFO L87 Difference]: Start difference. First operand 21498 states and 31059 transitions. Second operand has 11 states, 11 states have (on average 12.181818181818182) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (48), 5 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-25 20:23:43,958 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:23:51,169 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:23:57,320 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:03,025 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:04,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:05,503 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:08,295 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:09,725 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:11,391 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:12,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:15,495 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:30,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:30,107 INFO L93 Difference]: Finished difference Result 43035 states and 62492 transitions. [2021-11-25 20:24:30,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 20:24:30,108 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.181818181818182) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (48), 5 states have call predecessors, (48), 2 states have call successors, (48) Word has length 438 [2021-11-25 20:24:30,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:30,214 INFO L225 Difference]: With dead ends: 43035 [2021-11-25 20:24:30,214 INFO L226 Difference]: Without dead ends: 21574 [2021-11-25 20:24:30,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:24:30,297 INFO L933 BasicCegarLoop]: 4731 mSDtfsCounter, 6 mSDsluCounter, 49515 mSDsCounter, 0 mSdLazyCounter, 7818 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 47285 SdHoareTripleChecker+Invalid, 7824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7818 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:30,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 47285 Invalid, 7824 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 7818 Invalid, 4 Unknown, 0 Unchecked, 52.3s Time] [2021-11-25 20:24:30,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21574 states. [2021-11-25 20:24:31,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21574 to 21556. [2021-11-25 20:24:31,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21556 states, 13165 states have (on average 1.3141663501709078) internal successors, (17301), 13535 states have internal predecessors, (17301), 6822 states have call successors, (6822), 1543 states have call predecessors, (6822), 1567 states have return successors, (7008), 6741 states have call predecessors, (7008), 6822 states have call successors, (7008) [2021-11-25 20:24:31,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21556 states to 21556 states and 31131 transitions. [2021-11-25 20:24:31,320 INFO L78 Accepts]: Start accepts. Automaton has 21556 states and 31131 transitions. Word has length 438 [2021-11-25 20:24:31,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:31,322 INFO L470 AbstractCegarLoop]: Abstraction has 21556 states and 31131 transitions. [2021-11-25 20:24:31,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.181818181818182) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (48), 5 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-25 20:24:31,323 INFO L276 IsEmpty]: Start isEmpty. Operand 21556 states and 31131 transitions. [2021-11-25 20:24:31,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2021-11-25 20:24:31,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:31,360 INFO L514 BasicCegarLoop]: trace histogram [28, 19, 19, 19, 19, 19, 19, 11, 11, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:24:31,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:24:31,360 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:24:31,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:31,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1674035698, now seen corresponding path program 1 times [2021-11-25 20:24:31,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:31,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070859758] [2021-11-25 20:24:31,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:31,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 1990 trivial. 0 not checked. [2021-11-25 20:24:32,294 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:32,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070859758] [2021-11-25 20:24:32,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070859758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:32,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:32,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:24:32,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524361815] [2021-11-25 20:24:32,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:32,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:24:32,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:32,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:24:32,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:24:32,297 INFO L87 Difference]: Start difference. First operand 21556 states and 31131 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2021-11-25 20:24:36,369 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:24:39,260 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:45,213 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:46,855 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:48,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:51,582 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:54,139 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:59,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:25:01,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:25:01,333 INFO L93 Difference]: Finished difference Result 47193 states and 68203 transitions. [2021-11-25 20:25:01,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:25:01,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) Word has length 476 [2021-11-25 20:25:01,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:25:01,627 INFO L225 Difference]: With dead ends: 47193 [2021-11-25 20:25:01,628 INFO L226 Difference]: Without dead ends: 25674 [2021-11-25 20:25:01,706 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 20:25:01,707 INFO L933 BasicCegarLoop]: 7268 mSDtfsCounter, 4747 mSDsluCounter, 8034 mSDsCounter, 0 mSdLazyCounter, 4765 mSolverCounterSat, 20 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4749 SdHoareTripleChecker+Valid, 13863 SdHoareTripleChecker+Invalid, 4790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 4765 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:25:01,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4749 Valid, 13863 Invalid, 4790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 4765 Invalid, 5 Unknown, 0 Unchecked, 28.2s Time] [2021-11-25 20:25:01,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25674 states. [2021-11-25 20:25:02,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25674 to 25665. [2021-11-25 20:25:02,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25665 states, 15694 states have (on average 1.3157894736842106) internal successors, (20650), 16132 states have internal predecessors, (20650), 8113 states have call successors, (8113), 1828 states have call predecessors, (8113), 1856 states have return successors, (8332), 8016 states have call predecessors, (8332), 8113 states have call successors, (8332) [2021-11-25 20:25:03,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25665 states to 25665 states and 37095 transitions. [2021-11-25 20:25:03,025 INFO L78 Accepts]: Start accepts. Automaton has 25665 states and 37095 transitions. Word has length 476 [2021-11-25 20:25:03,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:25:03,026 INFO L470 AbstractCegarLoop]: Abstraction has 25665 states and 37095 transitions. [2021-11-25 20:25:03,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2021-11-25 20:25:03,026 INFO L276 IsEmpty]: Start isEmpty. Operand 25665 states and 37095 transitions. [2021-11-25 20:25:03,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2021-11-25 20:25:03,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:25:03,060 INFO L514 BasicCegarLoop]: trace histogram [28, 21, 21, 21, 21, 21, 21, 11, 11, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:25:03,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 20:25:03,060 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:25:03,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:25:03,062 INFO L85 PathProgramCache]: Analyzing trace with hash -455714584, now seen corresponding path program 1 times [2021-11-25 20:25:03,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:25:03,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964875746] [2021-11-25 20:25:03,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:25:03,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:25:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:25:04,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2232 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2232 trivial. 0 not checked. [2021-11-25 20:25:04,017 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:25:04,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964875746] [2021-11-25 20:25:04,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964875746] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:25:04,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:25:04,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:25:04,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608316097] [2021-11-25 20:25:04,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:25:04,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:25:04,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:25:04,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:25:04,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:25:04,022 INFO L87 Difference]: Start difference. First operand 25665 states and 37095 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-25 20:25:08,009 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:25:09,176 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:25:11,751 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:25:15,331 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:25:17,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:25:22,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:25:22,099 INFO L93 Difference]: Finished difference Result 55055 states and 80090 transitions. [2021-11-25 20:25:22,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:25:22,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 455 [2021-11-25 20:25:22,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:25:22,251 INFO L225 Difference]: With dead ends: 55055 [2021-11-25 20:25:22,252 INFO L226 Difference]: Without dead ends: 29427 [2021-11-25 20:25:22,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:25:22,350 INFO L933 BasicCegarLoop]: 5169 mSDtfsCounter, 599 mSDsluCounter, 5527 mSDsCounter, 0 mSdLazyCounter, 1612 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 9924 SdHoareTripleChecker+Invalid, 1624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1612 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:25:22,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 9924 Invalid, 1624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1612 Invalid, 3 Unknown, 0 Unchecked, 17.3s Time] [2021-11-25 20:25:22,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29427 states. [2021-11-25 20:25:23,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29427 to 25667. [2021-11-25 20:25:23,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25667 states, 15696 states have (on average 1.3157492354740061) internal successors, (20652), 16134 states have internal predecessors, (20652), 8113 states have call successors, (8113), 1828 states have call predecessors, (8113), 1856 states have return successors, (8332), 8016 states have call predecessors, (8332), 8113 states have call successors, (8332) [2021-11-25 20:25:23,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25667 states to 25667 states and 37097 transitions. [2021-11-25 20:25:23,833 INFO L78 Accepts]: Start accepts. Automaton has 25667 states and 37097 transitions. Word has length 455 [2021-11-25 20:25:23,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:25:23,834 INFO L470 AbstractCegarLoop]: Abstraction has 25667 states and 37097 transitions. [2021-11-25 20:25:23,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-25 20:25:23,835 INFO L276 IsEmpty]: Start isEmpty. Operand 25667 states and 37097 transitions. [2021-11-25 20:25:23,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2021-11-25 20:25:23,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:25:23,866 INFO L514 BasicCegarLoop]: trace histogram [28, 21, 21, 21, 21, 21, 21, 11, 11, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:25:23,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 20:25:23,867 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:25:23,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:25:23,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1427320516, now seen corresponding path program 1 times [2021-11-25 20:25:23,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:25:23,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417585227] [2021-11-25 20:25:23,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:25:23,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:25:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:25:25,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2230 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2230 trivial. 0 not checked. [2021-11-25 20:25:25,015 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:25:25,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417585227] [2021-11-25 20:25:25,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417585227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:25:25,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:25:25,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:25:25,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106804951] [2021-11-25 20:25:25,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:25:25,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:25:25,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:25:25,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:25:25,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:25:25,019 INFO L87 Difference]: Start difference. First operand 25667 states and 37097 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-25 20:25:29,442 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:25:32,900 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:25:37,760 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:25:39,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:25:40,828 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:25:48,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:25:48,980 INFO L93 Difference]: Finished difference Result 58893 states and 86165 transitions. [2021-11-25 20:25:48,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:25:48,981 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), 2 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 457 [2021-11-25 20:25:48,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:25:49,107 INFO L225 Difference]: With dead ends: 58893 [2021-11-25 20:25:49,108 INFO L226 Difference]: Without dead ends: 33263 [2021-11-25 20:25:49,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:25:49,181 INFO L933 BasicCegarLoop]: 6186 mSDtfsCounter, 1227 mSDsluCounter, 12135 mSDsCounter, 0 mSdLazyCounter, 2659 mSolverCounterSat, 516 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 16715 SdHoareTripleChecker+Invalid, 3178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 2659 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:25:49,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1492 Valid, 16715 Invalid, 3178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 2659 Invalid, 3 Unknown, 0 Unchecked, 22.9s Time] [2021-11-25 20:25:49,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33263 states. [2021-11-25 20:25:50,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33263 to 25671. [2021-11-25 20:25:50,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25671 states, 15700 states have (on average 1.3156687898089172) internal successors, (20656), 16138 states have internal predecessors, (20656), 8113 states have call successors, (8113), 1828 states have call predecessors, (8113), 1856 states have return successors, (8332), 8016 states have call predecessors, (8332), 8113 states have call successors, (8332) [2021-11-25 20:25:50,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25671 states to 25671 states and 37101 transitions. [2021-11-25 20:25:50,490 INFO L78 Accepts]: Start accepts. Automaton has 25671 states and 37101 transitions. Word has length 457 [2021-11-25 20:25:50,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:25:50,491 INFO L470 AbstractCegarLoop]: Abstraction has 25671 states and 37101 transitions. [2021-11-25 20:25:50,492 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), 2 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-25 20:25:50,492 INFO L276 IsEmpty]: Start isEmpty. Operand 25671 states and 37101 transitions. [2021-11-25 20:25:50,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2021-11-25 20:25:50,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:25:50,514 INFO L514 BasicCegarLoop]: trace histogram [27, 19, 19, 19, 19, 19, 19, 11, 11, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:25:50,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 20:25:50,515 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:25:50,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:25:50,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1872078672, now seen corresponding path program 1 times [2021-11-25 20:25:50,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:25:50,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110872399] [2021-11-25 20:25:50,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:25:50,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:25:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:25:51,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2021-11-25 20:25:51,403 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:25:51,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110872399] [2021-11-25 20:25:51,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110872399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:25:51,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:25:51,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:25:51,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543276254] [2021-11-25 20:25:51,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:25:51,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:25:51,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:25:51,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:25:51,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:25:51,406 INFO L87 Difference]: Start difference. First operand 25671 states and 37101 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2021-11-25 20:25:54,905 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:25:56,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:25:57,916 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:25:59,948 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:26:04,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:26:06,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:26:09,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:09,868 INFO L93 Difference]: Finished difference Result 51401 states and 74663 transitions. [2021-11-25 20:26:09,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:26:09,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 450 [2021-11-25 20:26:09,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:09,953 INFO L225 Difference]: With dead ends: 51401 [2021-11-25 20:26:09,953 INFO L226 Difference]: Without dead ends: 25767 [2021-11-25 20:26:10,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:26:10,019 INFO L933 BasicCegarLoop]: 4717 mSDtfsCounter, 5 mSDsluCounter, 5487 mSDsCounter, 0 mSdLazyCounter, 1557 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 9428 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1557 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:10,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 9428 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1557 Invalid, 3 Unknown, 0 Unchecked, 17.7s Time] [2021-11-25 20:26:10,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25767 states. [2021-11-25 20:26:10,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25767 to 25683. [2021-11-25 20:26:10,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25683 states, 15712 states have (on average 1.315427698574338) internal successors, (20668), 16150 states have internal predecessors, (20668), 8113 states have call successors, (8113), 1828 states have call predecessors, (8113), 1856 states have return successors, (8332), 8016 states have call predecessors, (8332), 8113 states have call successors, (8332) [2021-11-25 20:26:11,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25683 states to 25683 states and 37113 transitions. [2021-11-25 20:26:11,007 INFO L78 Accepts]: Start accepts. Automaton has 25683 states and 37113 transitions. Word has length 450 [2021-11-25 20:26:11,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:11,008 INFO L470 AbstractCegarLoop]: Abstraction has 25683 states and 37113 transitions. [2021-11-25 20:26:11,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2021-11-25 20:26:11,008 INFO L276 IsEmpty]: Start isEmpty. Operand 25683 states and 37113 transitions. [2021-11-25 20:26:11,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2021-11-25 20:26:11,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:11,024 INFO L514 BasicCegarLoop]: trace histogram [27, 19, 19, 19, 19, 19, 19, 11, 11, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:11,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 20:26:11,025 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:11,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:11,025 INFO L85 PathProgramCache]: Analyzing trace with hash -249595906, now seen corresponding path program 1 times [2021-11-25 20:26:11,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:11,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452416978] [2021-11-25 20:26:11,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:11,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:11,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2021-11-25 20:26:11,949 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:11,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452416978] [2021-11-25 20:26:11,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452416978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:11,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:26:11,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:26:11,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071617658] [2021-11-25 20:26:11,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:11,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:26:11,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:11,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:26:11,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:26:11,952 INFO L87 Difference]: Start difference. First operand 25683 states and 37113 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (61), 2 states have call predecessors, (61), 3 states have return successors, (58), 3 states have call predecessors, (58), 2 states have call successors, (58) [2021-11-25 20:26:16,164 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:26:20,202 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:26:21,924 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:26:27,161 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:26:28,925 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:26:30,751 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:26:32,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:26:33,948 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:26:36,299 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 20:26:41,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:41,183 INFO L93 Difference]: Finished difference Result 51473 states and 75507 transitions. [2021-11-25 20:26:41,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:26:41,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (61), 2 states have call predecessors, (61), 3 states have return successors, (58), 3 states have call predecessors, (58), 2 states have call successors, (58) Word has length 458 [2021-11-25 20:26:41,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:41,314 INFO L225 Difference]: With dead ends: 51473 [2021-11-25 20:26:41,315 INFO L226 Difference]: Without dead ends: 25827 [2021-11-25 20:26:41,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:26:41,428 INFO L933 BasicCegarLoop]: 4738 mSDtfsCounter, 5 mSDsluCounter, 16525 mSDsCounter, 0 mSdLazyCounter, 3110 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 18942 SdHoareTripleChecker+Invalid, 3115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3110 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:41,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 18942 Invalid, 3115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3110 Invalid, 5 Unknown, 0 Unchecked, 28.4s Time] [2021-11-25 20:26:41,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25827 states. [2021-11-25 20:26:42,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25827 to 25731. [2021-11-25 20:26:42,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25731 states, 15748 states have (on average 1.3147066294132588) internal successors, (20704), 16186 states have internal predecessors, (20704), 8113 states have call successors, (8113), 1828 states have call predecessors, (8113), 1868 states have return successors, (8356), 8028 states have call predecessors, (8356), 8113 states have call successors, (8356) [2021-11-25 20:26:42,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25731 states to 25731 states and 37173 transitions. [2021-11-25 20:26:42,417 INFO L78 Accepts]: Start accepts. Automaton has 25731 states and 37173 transitions. Word has length 458 [2021-11-25 20:26:42,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:42,418 INFO L470 AbstractCegarLoop]: Abstraction has 25731 states and 37173 transitions. [2021-11-25 20:26:42,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (61), 2 states have call predecessors, (61), 3 states have return successors, (58), 3 states have call predecessors, (58), 2 states have call successors, (58) [2021-11-25 20:26:42,419 INFO L276 IsEmpty]: Start isEmpty. Operand 25731 states and 37173 transitions. [2021-11-25 20:26:42,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2021-11-25 20:26:42,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:42,433 INFO L514 BasicCegarLoop]: trace histogram [27, 19, 19, 19, 19, 19, 19, 11, 11, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:42,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 20:26:42,433 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:42,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:42,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1122475525, now seen corresponding path program 1 times [2021-11-25 20:26:42,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:42,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823459159] [2021-11-25 20:26:42,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:42,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:43,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1944 trivial. 0 not checked. [2021-11-25 20:26:43,558 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:43,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823459159] [2021-11-25 20:26:43,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823459159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:43,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:26:43,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:26:43,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804675289] [2021-11-25 20:26:43,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:43,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 20:26:43,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:43,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 20:26:43,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:26:43,560 INFO L87 Difference]: Start difference. First operand 25731 states and 37173 transitions. Second operand has 12 states, 11 states have (on average 13.0) internal successors, (143), 9 states have internal predecessors, (143), 3 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (60), 6 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-25 20:26:51,035 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:26:52,660 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:26:59,458 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:27:05,144 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:27:11,478 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:27:12,828 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:27:14,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:27:16,763 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:27:17,881 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:27:20,673 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:27:22,115 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:27:24,751 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:27:26,305 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:27:28,365 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:27:33,906 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:27:45,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:27:45,116 INFO L93 Difference]: Finished difference Result 51585 states and 74985 transitions. [2021-11-25 20:27:45,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 20:27:45,117 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 13.0) internal successors, (143), 9 states have internal predecessors, (143), 3 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (60), 6 states have call predecessors, (60), 3 states have call successors, (60) Word has length 462 [2021-11-25 20:27:45,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:27:45,210 INFO L225 Difference]: With dead ends: 51585 [2021-11-25 20:27:45,210 INFO L226 Difference]: Without dead ends: 25891 [2021-11-25 20:27:45,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-25 20:27:45,281 INFO L933 BasicCegarLoop]: 4723 mSDtfsCounter, 26 mSDsluCounter, 54895 mSDsCounter, 0 mSdLazyCounter, 8598 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 51906 SdHoareTripleChecker+Invalid, 8607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8598 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:27:45,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 51906 Invalid, 8607 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 8598 Invalid, 7 Unknown, 0 Unchecked, 60.5s Time] [2021-11-25 20:27:45,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25891 states. [2021-11-25 20:27:46,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25891 to 25795. [2021-11-25 20:27:46,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25795 states, 15792 states have (on average 1.3138297872340425) internal successors, (20748), 16230 states have internal predecessors, (20748), 8121 states have call successors, (8121), 1828 states have call predecessors, (8121), 1880 states have return successors, (8476), 8048 states have call predecessors, (8476), 8121 states have call successors, (8476) [2021-11-25 20:27:46,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25795 states to 25795 states and 37345 transitions. [2021-11-25 20:27:46,225 INFO L78 Accepts]: Start accepts. Automaton has 25795 states and 37345 transitions. Word has length 462 [2021-11-25 20:27:46,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:27:46,226 INFO L470 AbstractCegarLoop]: Abstraction has 25795 states and 37345 transitions. [2021-11-25 20:27:46,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 13.0) internal successors, (143), 9 states have internal predecessors, (143), 3 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (60), 6 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-25 20:27:46,227 INFO L276 IsEmpty]: Start isEmpty. Operand 25795 states and 37345 transitions. [2021-11-25 20:27:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2021-11-25 20:27:46,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:27:46,246 INFO L514 BasicCegarLoop]: trace histogram [28, 21, 21, 21, 21, 21, 21, 11, 11, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:27:46,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 20:27:46,246 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:27:46,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:27:46,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1359820554, now seen corresponding path program 1 times [2021-11-25 20:27:46,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:27:46,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094756319] [2021-11-25 20:27:46,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:27:46,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:27:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:27:47,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2230 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2227 trivial. 0 not checked. [2021-11-25 20:27:47,193 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:27:47,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094756319] [2021-11-25 20:27:47,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094756319] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:27:47,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271756715] [2021-11-25 20:27:47,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:27:47,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:27:47,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab7ea27-58eb-463b-9b27-e83f231161c6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:27:47,196 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab7ea27-58eb-463b-9b27-e83f231161c6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:27:47,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab7ea27-58eb-463b-9b27-e83f231161c6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:27:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:27:50,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 11214 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:27:50,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:27:51,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2230 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2230 trivial. 0 not checked. [2021-11-25 20:27:51,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:27:51,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271756715] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:27:51,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:27:51,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 20:27:51,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771430408] [2021-11-25 20:27:51,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:27:51,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:27:51,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:27:51,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:27:51,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:27:51,014 INFO L87 Difference]: Start difference. First operand 25795 states and 37345 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-25 20:27:54,311 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:27:56,427 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:28:01,378 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:28:03,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:28:05,134 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:28:08,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:28:08,585 INFO L93 Difference]: Finished difference Result 51661 states and 76825 transitions. [2021-11-25 20:28:08,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:28:08,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 470 [2021-11-25 20:28:08,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:28:08,831 INFO L225 Difference]: With dead ends: 51661 [2021-11-25 20:28:08,831 INFO L226 Difference]: Without dead ends: 25903 [2021-11-25 20:28:08,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:28:08,904 INFO L933 BasicCegarLoop]: 4714 mSDtfsCounter, 7 mSDsluCounter, 5485 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 9425 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:28:08,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 9425 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1553 Invalid, 4 Unknown, 0 Unchecked, 16.7s Time] [2021-11-25 20:28:08,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25903 states. [2021-11-25 20:28:09,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25903 to 25807. [2021-11-25 20:28:09,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25807 states, 15804 states have (on average 1.3135914958238422) internal successors, (20760), 16242 states have internal predecessors, (20760), 8121 states have call successors, (8121), 1828 states have call predecessors, (8121), 1880 states have return successors, (8476), 8048 states have call predecessors, (8476), 8121 states have call successors, (8476) [2021-11-25 20:28:09,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25807 states to 25807 states and 37357 transitions. [2021-11-25 20:28:09,786 INFO L78 Accepts]: Start accepts. Automaton has 25807 states and 37357 transitions. Word has length 470 [2021-11-25 20:28:09,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:28:09,787 INFO L470 AbstractCegarLoop]: Abstraction has 25807 states and 37357 transitions. [2021-11-25 20:28:09,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-25 20:28:09,787 INFO L276 IsEmpty]: Start isEmpty. Operand 25807 states and 37357 transitions. [2021-11-25 20:28:09,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2021-11-25 20:28:09,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:28:09,807 INFO L514 BasicCegarLoop]: trace histogram [28, 21, 21, 21, 21, 21, 21, 11, 11, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:28:09,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab7ea27-58eb-463b-9b27-e83f231161c6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:28:10,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab7ea27-58eb-463b-9b27-e83f231161c6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-25 20:28:10,021 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:28:10,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:28:10,022 INFO L85 PathProgramCache]: Analyzing trace with hash -230100233, now seen corresponding path program 1 times [2021-11-25 20:28:10,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:28:10,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571619765] [2021-11-25 20:28:10,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:28:10,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:28:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:28:10,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2232 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2232 trivial. 0 not checked. [2021-11-25 20:28:10,823 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:28:10,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571619765] [2021-11-25 20:28:10,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571619765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:28:10,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:28:10,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:28:10,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487274659] [2021-11-25 20:28:10,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:28:10,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:28:10,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:28:10,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:28:10,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:28:10,826 INFO L87 Difference]: Start difference. First operand 25807 states and 37357 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2021-11-25 20:28:15,048 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:28:17,193 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:28:20,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:28:24,819 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:28:26,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:28:28,604 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:28:31,540 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:28:34,743 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:28:40,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:28:40,180 INFO L93 Difference]: Finished difference Result 59173 states and 86685 transitions. [2021-11-25 20:28:40,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:28:40,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) Word has length 475 [2021-11-25 20:28:40,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:28:40,298 INFO L225 Difference]: With dead ends: 59173 [2021-11-25 20:28:40,298 INFO L226 Difference]: Without dead ends: 33403 [2021-11-25 20:28:40,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:28:40,368 INFO L933 BasicCegarLoop]: 6181 mSDtfsCounter, 1227 mSDsluCounter, 12122 mSDsCounter, 0 mSdLazyCounter, 2642 mSolverCounterSat, 517 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 16704 SdHoareTripleChecker+Invalid, 3164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 2642 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:28:40,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1492 Valid, 16704 Invalid, 3164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 2642 Invalid, 5 Unknown, 0 Unchecked, 28.1s Time] [2021-11-25 20:28:40,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33403 states. [2021-11-25 20:28:41,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33403 to 25807. [2021-11-25 20:28:41,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25807 states, 15804 states have (on average 1.3135914958238422) internal successors, (20760), 16242 states have internal predecessors, (20760), 8121 states have call successors, (8121), 1828 states have call predecessors, (8121), 1880 states have return successors, (8476), 8048 states have call predecessors, (8476), 8121 states have call successors, (8476) [2021-11-25 20:28:41,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25807 states to 25807 states and 37357 transitions. [2021-11-25 20:28:41,544 INFO L78 Accepts]: Start accepts. Automaton has 25807 states and 37357 transitions. Word has length 475 [2021-11-25 20:28:41,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:28:41,545 INFO L470 AbstractCegarLoop]: Abstraction has 25807 states and 37357 transitions. [2021-11-25 20:28:41,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2021-11-25 20:28:41,545 INFO L276 IsEmpty]: Start isEmpty. Operand 25807 states and 37357 transitions. [2021-11-25 20:28:41,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2021-11-25 20:28:41,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:28:41,563 INFO L514 BasicCegarLoop]: trace histogram [27, 19, 19, 19, 19, 19, 19, 11, 11, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:28:41,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 20:28:41,564 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:28:41,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:28:41,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1606655600, now seen corresponding path program 1 times [2021-11-25 20:28:41,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:28:41,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374687002] [2021-11-25 20:28:41,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:28:41,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:28:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:28:42,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1944 trivial. 0 not checked. [2021-11-25 20:28:42,695 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:28:42,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374687002] [2021-11-25 20:28:42,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374687002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:28:42,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:28:42,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:28:42,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694277140] [2021-11-25 20:28:42,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:28:42,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 20:28:42,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:28:42,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 20:28:42,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:28:42,698 INFO L87 Difference]: Start difference. First operand 25807 states and 37357 transitions. Second operand has 12 states, 11 states have (on average 13.727272727272727) internal successors, (151), 9 states have internal predecessors, (151), 3 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (60), 6 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-25 20:28:49,256 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:28:51,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:29:07,682 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:29:09,090 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:29:10,379 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:29:12,369 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:29:14,511 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:29:15,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:29:17,497 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:29:19,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:29:21,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:29:28,423 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 20:29:35,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:29:35,516 INFO L93 Difference]: Finished difference Result 51803 states and 75490 transitions. [2021-11-25 20:29:35,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 20:29:35,517 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 13.727272727272727) internal successors, (151), 9 states have internal predecessors, (151), 3 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (60), 6 states have call predecessors, (60), 3 states have call successors, (60) Word has length 470 [2021-11-25 20:29:35,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:29:35,611 INFO L225 Difference]: With dead ends: 51803 [2021-11-25 20:29:35,611 INFO L226 Difference]: Without dead ends: 26033 [2021-11-25 20:29:35,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-25 20:29:35,678 INFO L933 BasicCegarLoop]: 4726 mSDtfsCounter, 28 mSDsluCounter, 54915 mSDsCounter, 0 mSdLazyCounter, 8590 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 51939 SdHoareTripleChecker+Invalid, 8597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8590 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:29:35,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 51939 Invalid, 8597 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 8590 Invalid, 4 Unknown, 0 Unchecked, 51.8s Time] [2021-11-25 20:29:35,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26033 states. [2021-11-25 20:29:36,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26033 to 25807. [2021-11-25 20:29:36,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25807 states, 15804 states have (on average 1.3135914958238422) internal successors, (20760), 16242 states have internal predecessors, (20760), 8121 states have call successors, (8121), 1828 states have call predecessors, (8121), 1880 states have return successors, (8476), 8048 states have call predecessors, (8476), 8121 states have call successors, (8476) [2021-11-25 20:29:36,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25807 states to 25807 states and 37357 transitions. [2021-11-25 20:29:36,677 INFO L78 Accepts]: Start accepts. Automaton has 25807 states and 37357 transitions. Word has length 470 [2021-11-25 20:29:36,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:29:36,678 INFO L470 AbstractCegarLoop]: Abstraction has 25807 states and 37357 transitions. [2021-11-25 20:29:36,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 13.727272727272727) internal successors, (151), 9 states have internal predecessors, (151), 3 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (60), 6 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-25 20:29:36,678 INFO L276 IsEmpty]: Start isEmpty. Operand 25807 states and 37357 transitions. [2021-11-25 20:29:36,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2021-11-25 20:29:36,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:29:36,691 INFO L514 BasicCegarLoop]: trace histogram [27, 19, 19, 19, 19, 19, 19, 11, 11, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:29:36,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 20:29:36,691 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:29:36,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:29:36,692 INFO L85 PathProgramCache]: Analyzing trace with hash 555545604, now seen corresponding path program 1 times [2021-11-25 20:29:36,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:29:36,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335376602] [2021-11-25 20:29:36,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:29:36,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:29:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:29:37,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1948 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1948 trivial. 0 not checked. [2021-11-25 20:29:37,572 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:29:37,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335376602] [2021-11-25 20:29:37,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335376602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:29:37,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:29:37,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-25 20:29:37,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058623217] [2021-11-25 20:29:37,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:29:37,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 20:29:37,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:29:37,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 20:29:37,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-11-25 20:29:37,575 INFO L87 Difference]: Start difference. First operand 25807 states and 37357 transitions. Second operand has 14 states, 13 states have (on average 11.538461538461538) internal successors, (150), 10 states have internal predecessors, (150), 3 states have call successors, (65), 2 states have call predecessors, (65), 5 states have return successors, (62), 7 states have call predecessors, (62), 3 states have call successors, (62) [2021-11-25 20:29:46,067 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:29:48,460 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:29:52,096 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:30:07,858 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:30:09,486 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:30:12,169 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:30:13,902 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:30:16,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:30:18,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:30:19,895 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:30:21,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:30:23,712 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:30:25,782 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:30:27,861 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:30:45,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:30:45,137 INFO L93 Difference]: Finished difference Result 51915 states and 76101 transitions. [2021-11-25 20:30:45,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:30:45,138 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 11.538461538461538) internal successors, (150), 10 states have internal predecessors, (150), 3 states have call successors, (65), 2 states have call predecessors, (65), 5 states have return successors, (62), 7 states have call predecessors, (62), 3 states have call successors, (62) Word has length 474 [2021-11-25 20:30:45,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:30:45,250 INFO L225 Difference]: With dead ends: 51915 [2021-11-25 20:30:45,251 INFO L226 Difference]: Without dead ends: 26145 [2021-11-25 20:30:45,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-11-25 20:30:45,449 INFO L933 BasicCegarLoop]: 4720 mSDtfsCounter, 28 mSDsluCounter, 65848 mSDsCounter, 0 mSdLazyCounter, 10183 mSolverCounterSat, 5 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 61312 SdHoareTripleChecker+Invalid, 10195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10183 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:30:45,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 61312 Invalid, 10195 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 10183 Invalid, 7 Unknown, 0 Unchecked, 66.6s Time] [2021-11-25 20:30:45,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26145 states. [2021-11-25 20:30:46,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26145 to 25855. [2021-11-25 20:30:46,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25855 states, 15840 states have (on average 1.312878787878788) internal successors, (20796), 16278 states have internal predecessors, (20796), 8121 states have call successors, (8121), 1828 states have call predecessors, (8121), 1892 states have return successors, (8742), 8060 states have call predecessors, (8742), 8121 states have call successors, (8742) [2021-11-25 20:30:46,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25855 states to 25855 states and 37659 transitions. [2021-11-25 20:30:46,473 INFO L78 Accepts]: Start accepts. Automaton has 25855 states and 37659 transitions. Word has length 474 [2021-11-25 20:30:46,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:30:46,474 INFO L470 AbstractCegarLoop]: Abstraction has 25855 states and 37659 transitions. [2021-11-25 20:30:46,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 11.538461538461538) internal successors, (150), 10 states have internal predecessors, (150), 3 states have call successors, (65), 2 states have call predecessors, (65), 5 states have return successors, (62), 7 states have call predecessors, (62), 3 states have call successors, (62) [2021-11-25 20:30:46,475 INFO L276 IsEmpty]: Start isEmpty. Operand 25855 states and 37659 transitions. [2021-11-25 20:30:46,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2021-11-25 20:30:46,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:30:46,488 INFO L514 BasicCegarLoop]: trace histogram [27, 19, 19, 19, 19, 19, 19, 11, 11, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:30:46,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 20:30:46,488 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:30:46,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:30:46,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1799866341, now seen corresponding path program 1 times [2021-11-25 20:30:46,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:30:46,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173826064] [2021-11-25 20:30:46,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:30:46,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:30:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:30:47,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1948 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1948 trivial. 0 not checked. [2021-11-25 20:30:47,252 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:30:47,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173826064] [2021-11-25 20:30:47,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173826064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:30:47,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:30:47,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:30:47,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853334268] [2021-11-25 20:30:47,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:30:47,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:30:47,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:30:47,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:30:47,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:30:47,255 INFO L87 Difference]: Start difference. First operand 25855 states and 37659 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (65), 2 states have call predecessors, (65), 3 states have return successors, (62), 3 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-25 20:30:51,280 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:30:54,941 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:30:58,660 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:31:01,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:31:03,538 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:31:05,218 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:31:14,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:31:14,397 INFO L93 Difference]: Finished difference Result 51673 states and 75796 transitions. [2021-11-25 20:31:14,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:31:14,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (65), 2 states have call predecessors, (65), 3 states have return successors, (62), 3 states have call predecessors, (62), 2 states have call successors, (62) Word has length 475 [2021-11-25 20:31:14,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:31:14,507 INFO L225 Difference]: With dead ends: 51673 [2021-11-25 20:31:14,507 INFO L226 Difference]: Without dead ends: 25855 [2021-11-25 20:31:14,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:31:14,589 INFO L933 BasicCegarLoop]: 4754 mSDtfsCounter, 4 mSDsluCounter, 16569 mSDsCounter, 0 mSdLazyCounter, 3108 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 19006 SdHoareTripleChecker+Invalid, 3111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3108 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:31:14,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 19006 Invalid, 3111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3108 Invalid, 3 Unknown, 0 Unchecked, 26.3s Time] [2021-11-25 20:31:14,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25855 states. [2021-11-25 20:31:15,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25855 to 25855. [2021-11-25 20:31:15,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25855 states, 15840 states have (on average 1.312121212121212) internal successors, (20784), 16278 states have internal predecessors, (20784), 8121 states have call successors, (8121), 1828 states have call predecessors, (8121), 1892 states have return successors, (8742), 8060 states have call predecessors, (8742), 8121 states have call successors, (8742) [2021-11-25 20:31:15,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25855 states to 25855 states and 37647 transitions. [2021-11-25 20:31:15,674 INFO L78 Accepts]: Start accepts. Automaton has 25855 states and 37647 transitions. Word has length 475 [2021-11-25 20:31:15,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:31:15,675 INFO L470 AbstractCegarLoop]: Abstraction has 25855 states and 37647 transitions. [2021-11-25 20:31:15,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (65), 2 states have call predecessors, (65), 3 states have return successors, (62), 3 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-25 20:31:15,675 INFO L276 IsEmpty]: Start isEmpty. Operand 25855 states and 37647 transitions. [2021-11-25 20:31:15,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2021-11-25 20:31:15,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:31:15,691 INFO L514 BasicCegarLoop]: trace histogram [28, 21, 21, 21, 21, 21, 21, 11, 11, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:31:15,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 20:31:15,692 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:31:15,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:31:15,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1891481158, now seen corresponding path program 1 times [2021-11-25 20:31:15,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:31:15,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083496481] [2021-11-25 20:31:15,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:31:15,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:31:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:31:16,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2236 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2236 trivial. 0 not checked. [2021-11-25 20:31:16,672 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:31:16,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083496481] [2021-11-25 20:31:16,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083496481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:31:16,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:31:16,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:31:16,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266858268] [2021-11-25 20:31:16,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:31:16,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:31:16,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:31:16,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:31:16,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:31:16,675 INFO L87 Difference]: Start difference. First operand 25855 states and 37647 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-25 20:31:19,958 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:31:23,777 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:31:26,193 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:31:28,257 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:31:32,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:31:32,432 INFO L93 Difference]: Finished difference Result 62851 states and 91143 transitions. [2021-11-25 20:31:32,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:31:32,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 479 [2021-11-25 20:31:32,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:31:32,595 INFO L225 Difference]: With dead ends: 62851 [2021-11-25 20:31:32,595 INFO L226 Difference]: Without dead ends: 37033 [2021-11-25 20:31:32,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:31:32,673 INFO L933 BasicCegarLoop]: 5192 mSDtfsCounter, 5289 mSDsluCounter, 2261 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5295 SdHoareTripleChecker+Valid, 7103 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:31:32,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5295 Valid, 7103 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1127 Invalid, 4 Unknown, 0 Unchecked, 14.6s Time] [2021-11-25 20:31:32,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37033 states. [2021-11-25 20:31:33,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37033 to 37028. [2021-11-25 20:31:33,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37028 states, 22679 states have (on average 1.3075532430883197) internal successors, (29654), 23332 states have internal predecessors, (29654), 11459 states have call successors, (11459), 2782 states have call predecessors, (11459), 2889 states have return successors, (12431), 11384 states have call predecessors, (12431), 11459 states have call successors, (12431) [2021-11-25 20:31:34,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37028 states to 37028 states and 53544 transitions. [2021-11-25 20:31:34,147 INFO L78 Accepts]: Start accepts. Automaton has 37028 states and 53544 transitions. Word has length 479 [2021-11-25 20:31:34,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:31:34,147 INFO L470 AbstractCegarLoop]: Abstraction has 37028 states and 53544 transitions. [2021-11-25 20:31:34,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-25 20:31:34,148 INFO L276 IsEmpty]: Start isEmpty. Operand 37028 states and 53544 transitions. [2021-11-25 20:31:34,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2021-11-25 20:31:34,163 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:31:34,163 INFO L514 BasicCegarLoop]: trace histogram [27, 19, 19, 19, 19, 19, 19, 11, 11, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:31:34,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 20:31:34,163 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:31:34,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:31:34,164 INFO L85 PathProgramCache]: Analyzing trace with hash 974340889, now seen corresponding path program 1 times [2021-11-25 20:31:34,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:31:34,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979809097] [2021-11-25 20:31:34,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:31:34,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:31:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:31:34,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1978 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1978 trivial. 0 not checked. [2021-11-25 20:31:34,991 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:31:34,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979809097] [2021-11-25 20:31:34,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979809097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:31:34,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:31:34,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 20:31:34,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646998499] [2021-11-25 20:31:34,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:31:34,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:31:34,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:31:34,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:31:34,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:31:34,995 INFO L87 Difference]: Start difference. First operand 37028 states and 53544 transitions. Second operand has 8 states, 7 states have (on average 21.857142857142858) internal successors, (153), 6 states have internal predecessors, (153), 3 states have call successors, (67), 2 states have call predecessors, (67), 4 states have return successors, (64), 5 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-25 20:31:40,627 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:31:41,738 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:31:43,779 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:31:46,288 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:31:48,327 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:31:50,371 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:32:02,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:32:04,916 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:32:06,964 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:32:09,004 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:32:11,054 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:32:13,098 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:32:15,134 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:32:17,835 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:32:19,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:32:33,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:33,092 INFO L93 Difference]: Finished difference Result 74035 states and 107609 transitions. [2021-11-25 20:32:33,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:32:33,093 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 21.857142857142858) internal successors, (153), 6 states have internal predecessors, (153), 3 states have call successors, (67), 2 states have call predecessors, (67), 4 states have return successors, (64), 5 states have call predecessors, (64), 3 states have call successors, (64) Word has length 491 [2021-11-25 20:32:33,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:33,242 INFO L225 Difference]: With dead ends: 74035 [2021-11-25 20:32:33,242 INFO L226 Difference]: Without dead ends: 37044 [2021-11-25 20:32:33,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-25 20:32:33,529 INFO L933 BasicCegarLoop]: 4743 mSDtfsCounter, 6 mSDsluCounter, 33064 mSDsCounter, 0 mSdLazyCounter, 5444 mSolverCounterSat, 2 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 33176 SdHoareTripleChecker+Invalid, 5458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5444 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:33,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 33176 Invalid, 5458 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 5444 Invalid, 12 Unknown, 0 Unchecked, 56.8s Time] [2021-11-25 20:32:33,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37044 states. [2021-11-25 20:32:34,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37044 to 37028. [2021-11-25 20:32:34,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37028 states, 22679 states have (on average 1.3067154636447815) internal successors, (29635), 23332 states have internal predecessors, (29635), 11459 states have call successors, (11459), 2782 states have call predecessors, (11459), 2889 states have return successors, (12431), 11384 states have call predecessors, (12431), 11459 states have call successors, (12431) [2021-11-25 20:32:34,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37028 states to 37028 states and 53525 transitions. [2021-11-25 20:32:34,980 INFO L78 Accepts]: Start accepts. Automaton has 37028 states and 53525 transitions. Word has length 491 [2021-11-25 20:32:34,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:34,981 INFO L470 AbstractCegarLoop]: Abstraction has 37028 states and 53525 transitions. [2021-11-25 20:32:34,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 21.857142857142858) internal successors, (153), 6 states have internal predecessors, (153), 3 states have call successors, (67), 2 states have call predecessors, (67), 4 states have return successors, (64), 5 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-25 20:32:34,981 INFO L276 IsEmpty]: Start isEmpty. Operand 37028 states and 53525 transitions. [2021-11-25 20:32:34,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2021-11-25 20:32:34,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:34,995 INFO L514 BasicCegarLoop]: trace histogram [27, 19, 19, 19, 19, 19, 19, 11, 11, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:32:34,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 20:32:34,995 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:32:34,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:34,995 INFO L85 PathProgramCache]: Analyzing trace with hash 281439457, now seen corresponding path program 1 times [2021-11-25 20:32:34,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:32:34,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75305716] [2021-11-25 20:32:34,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:34,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:32:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:35,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1979 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1978 trivial. 0 not checked. [2021-11-25 20:32:35,660 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:32:35,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75305716] [2021-11-25 20:32:35,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75305716] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:32:35,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227871231] [2021-11-25 20:32:35,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:35,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:32:35,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab7ea27-58eb-463b-9b27-e83f231161c6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:32:35,663 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab7ea27-58eb-463b-9b27-e83f231161c6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:32:35,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab7ea27-58eb-463b-9b27-e83f231161c6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:32:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:38,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 11355 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:32:38,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:39,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1979 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 1956 trivial. 0 not checked. [2021-11-25 20:32:39,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:32:40,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1979 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1978 trivial. 0 not checked. [2021-11-25 20:32:40,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227871231] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:32:40,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [69313253] [2021-11-25 20:32:40,369 INFO L159 IcfgInterpreter]: Started Sifa with 242 locations of interest [2021-11-25 20:32:40,370 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:32:40,375 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:32:40,380 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:32:40,389 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs