./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qlge--qlge.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qlge--qlge.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8e14f2a21a56a60e783d0aab2506240481fbe23123ec2497fb50b7b6292e33af --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:26:16,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:26:16,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:26:16,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:26:16,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:26:16,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:26:16,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:26:16,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:26:16,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:26:16,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:26:16,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:26:16,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:26:16,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:26:16,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:26:16,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:26:16,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:26:16,932 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:26:16,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:26:16,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:26:16,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:26:16,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:26:16,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:26:16,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:26:16,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:26:16,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:26:16,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:26:16,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:26:16,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:26:16,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:26:16,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:26:16,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:26:16,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:26:16,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:26:16,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:26:16,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:26:16,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:26:16,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:26:16,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:26:16,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:26:16,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:26:16,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:26:16,983 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:26:17,023 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:26:17,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:26:17,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:26:17,024 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:26:17,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:26:17,025 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:26:17,025 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:26:17,025 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:26:17,026 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:26:17,026 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:26:17,026 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:26:17,027 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:26:17,027 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:26:17,027 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:26:17,027 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:26:17,028 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:26:17,028 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:26:17,028 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:26:17,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:26:17,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:26:17,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:26:17,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:26:17,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:26:17,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:26:17,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:26:17,031 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:26:17,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:26:17,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:26:17,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:26:17,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:26:17,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:26:17,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:26:17,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:26:17,033 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:26:17,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:26:17,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:26:17,034 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:26:17,034 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:26:17,035 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_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e14f2a21a56a60e783d0aab2506240481fbe23123ec2497fb50b7b6292e33af [2021-11-21 00:26:17,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:26:17,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:26:17,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:26:17,337 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:26:17,338 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:26:17,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qlge--qlge.ko-entry_point.cil.out.i [2021-11-21 00:26:17,416 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/data/2b75a11aa/daaeb23d3f7c426585d0db5d72f1758a/FLAGe935f6d17 [2021-11-21 00:26:18,769 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:26:18,770 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qlge--qlge.ko-entry_point.cil.out.i [2021-11-21 00:26:18,856 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/data/2b75a11aa/daaeb23d3f7c426585d0db5d72f1758a/FLAGe935f6d17 [2021-11-21 00:26:18,903 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/data/2b75a11aa/daaeb23d3f7c426585d0db5d72f1758a [2021-11-21 00:26:18,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:26:18,909 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:26:18,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:26:18,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:26:18,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:26:18,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:26:18" (1/1) ... [2021-11-21 00:26:18,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@438aeb51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:26:18, skipping insertion in model container [2021-11-21 00:26:18,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:26:18" (1/1) ... [2021-11-21 00:26:18,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:26:19,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:26:20,064 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6571] [2021-11-21 00:26:20,065 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6572-6573] [2021-11-21 00:26:21,119 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_857bae1a-5ff8-4ccf-8139-890445cc4e2d/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qlge--qlge.ko-entry_point.cil.out.i[202382,202395] [2021-11-21 00:26:25,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:26:25,780 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:26:25,978 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6571] [2021-11-21 00:26:25,978 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6572-6573] [2021-11-21 00:26:25,990 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_857bae1a-5ff8-4ccf-8139-890445cc4e2d/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qlge--qlge.ko-entry_point.cil.out.i[202382,202395] [2021-11-21 00:26:26,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:26:27,105 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:26:27,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:26:27 WrapperNode [2021-11-21 00:26:27,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:26:27,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:26:27,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:26:27,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:26:27,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:26:27" (1/1) ... [2021-11-21 00:26:27,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:26:27" (1/1) ... [2021-11-21 00:26:27,931 INFO L137 Inliner]: procedures = 615, calls = 7318, calls flagged for inlining = 278, calls inlined = 266, statements flattened = 14805 [2021-11-21 00:26:27,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:26:27,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:26:27,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:26:27,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:26:27,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:26:27" (1/1) ... [2021-11-21 00:26:27,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:26:27" (1/1) ... [2021-11-21 00:26:28,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:26:27" (1/1) ... [2021-11-21 00:26:28,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:26:27" (1/1) ... [2021-11-21 00:26:28,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:26:27" (1/1) ... [2021-11-21 00:26:28,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:26:27" (1/1) ... [2021-11-21 00:26:28,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:26:27" (1/1) ... [2021-11-21 00:26:28,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:26:28,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:26:28,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:26:28,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:26:28,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:26:27" (1/1) ... [2021-11-21 00:26:28,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:26:29,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:26:29,051 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:26:29,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:26:29,152 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-21 00:26:29,152 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-21 00:26:29,153 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-21 00:26:29,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-21 00:26:29,154 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-21 00:26:29,154 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-21 00:26:29,161 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-21 00:26:29,162 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_irq [2021-11-21 00:26:29,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_irq [2021-11-21 00:26:29,162 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-21 00:26:29,162 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-21 00:26:29,162 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-21 00:26:29,162 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-21 00:26:29,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-21 00:26:29,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-21 00:26:29,163 INFO L130 BoogieDeclarations]: Found specification of procedure ql_enable_completion_interrupt [2021-11-21 00:26:29,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_enable_completion_interrupt [2021-11-21 00:26:29,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:26:29,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:26:29,178 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_both_serdes [2021-11-21 00:26:29,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_both_serdes [2021-11-21 00:26:29,178 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_xgmac_reg [2021-11-21 00:26:29,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_xgmac_reg [2021-11-21 00:26:29,179 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_reset [2021-11-21 00:26:29,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_reset [2021-11-21 00:26:29,179 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2021-11-21 00:26:29,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2021-11-21 00:26:29,179 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-21 00:26:29,179 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-21 00:26:29,180 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2021-11-21 00:26:29,180 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2021-11-21 00:26:29,180 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_send [2021-11-21 00:26:29,180 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_send [2021-11-21 00:26:29,181 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2021-11-21 00:26:29,181 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2021-11-21 00:26:29,181 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-21 00:26:29,181 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-21 00:26:29,181 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2021-11-21 00:26:29,181 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2021-11-21 00:26:29,182 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 00:26:29,182 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 00:26:29,182 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-21 00:26:29,182 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-21 00:26:29,183 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 00:26:29,183 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 00:26:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_regs_len [2021-11-21 00:26:29,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_regs_len [2021-11-21 00:26:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_vlan_rx_kill_vid [2021-11-21 00:26:29,185 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_vlan_rx_kill_vid [2021-11-21 00:26:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 00:26:29,185 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 00:26:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure PageTail [2021-11-21 00:26:29,185 INFO L138 BoogieDeclarations]: Found implementation of procedure PageTail [2021-11-21 00:26:29,186 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_shutdown [2021-11-21 00:26:29,186 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_shutdown [2021-11-21 00:26:29,186 INFO L130 BoogieDeclarations]: Found specification of procedure ql_release_all [2021-11-21 00:26:29,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_release_all [2021-11-21 00:26:29,187 INFO L130 BoogieDeclarations]: Found specification of procedure ql_update_mac_hdr_len [2021-11-21 00:26:29,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_update_mac_hdr_len [2021-11-21 00:26:29,187 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mailbox_command [2021-11-21 00:26:29,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mailbox_command [2021-11-21 00:26:29,188 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_none_assert [2021-11-21 00:26:29,188 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_none_assert [2021-11-21 00:26:29,189 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 00:26:29,189 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 00:26:29,189 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_irq_mask [2021-11-21 00:26:29,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_irq_mask [2021-11-21 00:26:29,189 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 00:26:29,190 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 00:26:29,190 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-21 00:26:29,190 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-21 00:26:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure ql_dump_risc_ram_area [2021-11-21 00:26:29,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_dump_risc_ram_area [2021-11-21 00:26:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 00:26:29,191 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 00:26:29,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-21 00:26:29,192 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_other_func_reg [2021-11-21 00:26:29,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_other_func_reg [2021-11-21 00:26:29,192 INFO L130 BoogieDeclarations]: Found specification of procedure __qlge_vlan_rx_add_vid [2021-11-21 00:26:29,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __qlge_vlan_rx_add_vid [2021-11-21 00:26:29,193 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-21 00:26:29,193 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-21 00:26:29,193 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-21 00:26:29,193 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-21 00:26:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:26:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-21 00:26:29,195 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-21 00:26:29,195 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_xgmac_regs [2021-11-21 00:26:29,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_xgmac_regs [2021-11-21 00:26:29,196 INFO L130 BoogieDeclarations]: Found specification of procedure ql_queue_asic_error [2021-11-21 00:26:29,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_queue_asic_error [2021-11-21 00:26:29,196 INFO L130 BoogieDeclarations]: Found specification of procedure ql_update_buffer_queues [2021-11-21 00:26:29,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_update_buffer_queues [2021-11-21 00:26:29,197 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_cam_entries [2021-11-21 00:26:29,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_cam_entries [2021-11-21 00:26:29,197 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_mem_resources [2021-11-21 00:26:29,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_mem_resources [2021-11-21 00:26:29,197 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_xgmac_reg [2021-11-21 00:26:29,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_xgmac_reg [2021-11-21 00:26:29,198 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-21 00:26:29,198 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-21 00:26:29,210 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_up [2021-11-21 00:26:29,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_up [2021-11-21 00:26:29,211 INFO L130 BoogieDeclarations]: Found specification of procedure ql_eeh_close [2021-11-21 00:26:29,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_eeh_close [2021-11-21 00:26:29,211 INFO L130 BoogieDeclarations]: Found specification of procedure netif_receive_skb [2021-11-21 00:26:29,212 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_receive_skb [2021-11-21 00:26:29,212 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 00:26:29,216 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 00:26:29,216 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_mac_addr_reg [2021-11-21 00:26:29,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_mac_addr_reg [2021-11-21 00:26:29,216 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 00:26:29,218 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 00:26:29,219 INFO L130 BoogieDeclarations]: Found specification of procedure skb_record_rx_queue [2021-11-21 00:26:29,219 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_record_rx_queue [2021-11-21 00:26:29,219 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2021-11-21 00:26:29,219 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2021-11-21 00:26:29,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 00:26:29,224 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_serdes_reg [2021-11-21 00:26:29,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_serdes_reg [2021-11-21 00:26:29,224 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-21 00:26:29,224 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-21 00:26:29,225 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 00:26:29,225 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 00:26:29,225 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 00:26:29,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 00:26:29,225 INFO L130 BoogieDeclarations]: Found specification of procedure ql_build_coredump_seg_header [2021-11-21 00:26:29,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_build_coredump_seg_header [2021-11-21 00:26:29,225 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_close [2021-11-21 00:26:29,225 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_close [2021-11-21 00:26:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_mb_sts [2021-11-21 00:26:29,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_mb_sts [2021-11-21 00:26:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 00:26:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_open [2021-11-21 00:26:29,226 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_open [2021-11-21 00:26:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:26:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 00:26:29,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 00:26:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2021-11-21 00:26:29,227 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2021-11-21 00:26:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2021-11-21 00:26:29,227 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2021-11-21 00:26:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 00:26:29,227 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 00:26:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-21 00:26:29,227 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-21 00:26:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_probe [2021-11-21 00:26:29,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_probe [2021-11-21 00:26:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_offset [2021-11-21 00:26:29,228 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_offset [2021-11-21 00:26:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-21 00:26:29,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-21 00:26:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_rx_buffers [2021-11-21 00:26:29,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_rx_buffers [2021-11-21 00:26:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2021-11-21 00:26:29,229 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2021-11-21 00:26:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-21 00:26:29,229 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-21 00:26:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write32 [2021-11-21 00:26:29,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write32 [2021-11-21 00:26:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2021-11-21 00:26:29,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2021-11-21 00:26:29,231 INFO L130 BoogieDeclarations]: Found specification of procedure ql_cam_route_initialize [2021-11-21 00:26:29,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_cam_route_initialize [2021-11-21 00:26:29,231 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-21 00:26:29,231 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-21 00:26:29,231 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 00:26:29,232 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 00:26:29,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-21 00:26:29,232 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_other_func_reg_rdy [2021-11-21 00:26:29,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_other_func_reg_rdy [2021-11-21 00:26:29,232 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_trylock [2021-11-21 00:26:29,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_trylock [2021-11-21 00:26:29,232 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mb_set_port_cfg [2021-11-21 00:26:29,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mb_set_port_cfg [2021-11-21 00:26:29,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:26:29,233 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_mpi_reg [2021-11-21 00:26:29,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_mpi_reg [2021-11-21 00:26:29,233 INFO L130 BoogieDeclarations]: Found specification of procedure __get_order [2021-11-21 00:26:29,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __get_order [2021-11-21 00:26:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_spinlock [2021-11-21 00:26:29,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_spinlock [2021-11-21 00:26:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:26:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-21 00:26:29,234 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-21 00:26:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_get_stats [2021-11-21 00:26:29,235 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_get_stats [2021-11-21 00:26:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 00:26:29,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 00:26:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:26:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 00:26:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_unlock [2021-11-21 00:26:29,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_unlock [2021-11-21 00:26:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_8012_flash_params [2021-11-21 00:26:29,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_8012_flash_params [2021-11-21 00:26:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:26:29,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:26:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_io_slot_reset [2021-11-21 00:26:29,236 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_io_slot_reset [2021-11-21 00:26:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-21 00:26:29,237 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-21 00:26:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_other_func_serdes_reg [2021-11-21 00:26:29,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_other_func_serdes_reg [2021-11-21 00:26:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 00:26:29,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 00:26:29,238 INFO L130 BoogieDeclarations]: Found specification of procedure ql_disable_completion_interrupt [2021-11-21 00:26:29,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_disable_completion_interrupt [2021-11-21 00:26:29,238 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_fill_page_desc [2021-11-21 00:26:29,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_fill_page_desc [2021-11-21 00:26:29,238 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-21 00:26:29,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-21 00:26:29,239 INFO L130 BoogieDeclarations]: Found specification of procedure ql_clear_routing_entries [2021-11-21 00:26:29,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_clear_routing_entries [2021-11-21 00:26:29,239 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-21 00:26:29,239 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-21 00:26:29,239 INFO L130 BoogieDeclarations]: Found specification of procedure ql_link_off [2021-11-21 00:26:29,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_link_off [2021-11-21 00:26:29,240 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 00:26:29,240 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 00:26:29,240 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-21 00:26:29,240 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-21 00:26:29,240 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-21 00:26:29,240 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-21 00:26:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_tx_timeout [2021-11-21 00:26:29,241 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_tx_timeout [2021-11-21 00:26:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure ql_8000_port_initialize [2021-11-21 00:26:29,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_8000_port_initialize [2021-11-21 00:26:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-11-21 00:26:29,241 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-11-21 00:26:29,242 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_mpi_regs [2021-11-21 00:26:29,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_mpi_regs [2021-11-21 00:26:29,242 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-21 00:26:29,242 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-21 00:26:29,242 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 00:26:29,244 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 00:26:29,260 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_set_mac_address [2021-11-21 00:26:29,261 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_set_mac_address [2021-11-21 00:26:29,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:26:29,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:26:29,261 INFO L130 BoogieDeclarations]: Found specification of procedure ql_8012_port_initialize [2021-11-21 00:26:29,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_8012_port_initialize [2021-11-21 00:26:29,262 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-21 00:26:29,262 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-21 00:26:29,262 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_flash_word [2021-11-21 00:26:29,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_flash_word [2021-11-21 00:26:29,262 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_subqueue [2021-11-21 00:26:29,262 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_subqueue [2021-11-21 00:26:29,263 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-21 00:26:29,263 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-21 00:26:29,263 INFO L130 BoogieDeclarations]: Found specification of procedure ql_release_adapter_resources [2021-11-21 00:26:29,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_release_adapter_resources [2021-11-21 00:26:29,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 00:26:29,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:26:29,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 00:26:29,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 00:26:29,264 INFO L130 BoogieDeclarations]: Found specification of procedure csum_tcpudp_magic [2021-11-21 00:26:29,264 INFO L138 BoogieDeclarations]: Found implementation of procedure csum_tcpudp_magic [2021-11-21 00:26:29,264 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-21 00:26:29,264 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-21 00:26:29,264 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-21 00:26:29,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-21 00:26:29,265 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_rx_resources [2021-11-21 00:26:29,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_rx_resources [2021-11-21 00:26:29,265 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2021-11-21 00:26:29,265 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2021-11-21 00:26:29,265 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-21 00:26:29,266 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-21 00:26:29,266 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 00:26:29,266 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 00:26:29,266 INFO L130 BoogieDeclarations]: Found specification of procedure ql_disable_interrupts [2021-11-21 00:26:29,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_disable_interrupts [2021-11-21 00:26:29,266 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-21 00:26:29,267 INFO L130 BoogieDeclarations]: Found specification of procedure ql_soft_reset_mpi_risc [2021-11-21 00:26:29,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_soft_reset_mpi_risc [2021-11-21 00:26:29,267 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-21 00:26:29,267 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-21 00:26:29,267 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_remove [2021-11-21 00:26:29,267 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_remove [2021-11-21 00:26:29,267 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_cq_idx [2021-11-21 00:26:29,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_cq_idx [2021-11-21 00:26:29,268 INFO L130 BoogieDeclarations]: Found specification of procedure ql_link_on [2021-11-21 00:26:29,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_link_on [2021-11-21 00:26:29,268 INFO L130 BoogieDeclarations]: Found specification of procedure napi_gro_receive [2021-11-21 00:26:29,268 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_gro_receive [2021-11-21 00:26:29,268 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_set_multicast_list [2021-11-21 00:26:29,269 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_set_multicast_list [2021-11-21 00:26:29,269 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-21 00:26:29,269 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-21 00:26:29,269 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2021-11-21 00:26:29,269 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2021-11-21 00:26:29,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-21 00:26:29,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-21 00:26:29,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2021-11-21 00:26:29,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2021-11-21 00:26:29,270 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-11-21 00:26:29,270 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-11-21 00:26:29,270 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-21 00:26:29,270 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-21 00:26:29,271 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-21 00:26:29,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-21 00:26:29,271 INFO L130 BoogieDeclarations]: Found specification of procedure ql_tx_ring_clean [2021-11-21 00:26:29,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_tx_ring_clean [2021-11-21 00:26:29,271 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-21 00:26:29,271 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-21 00:26:29,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 00:26:29,272 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 00:26:29,272 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2021-11-21 00:26:29,272 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2021-11-21 00:26:29,272 INFO L130 BoogieDeclarations]: Found specification of procedure skb_fill_page_desc [2021-11-21 00:26:29,272 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_fill_page_desc [2021-11-21 00:26:29,272 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 00:26:29,273 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 00:26:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_mpi_reg [2021-11-21 00:26:29,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_mpi_reg [2021-11-21 00:26:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-21 00:26:29,273 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-21 00:26:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure ql_clean_inbound_rx_ring [2021-11-21 00:26:29,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_clean_inbound_rx_ring [2021-11-21 00:26:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure ql_update_cq [2021-11-21 00:26:29,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_update_cq [2021-11-21 00:26:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-21 00:26:29,274 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-21 00:26:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_subqueue [2021-11-21 00:26:29,274 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_subqueue [2021-11-21 00:26:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 00:26:29,275 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 00:26:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-21 00:26:29,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-21 00:26:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_set_features [2021-11-21 00:26:29,275 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_set_features [2021-11-21 00:26:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:26:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 00:26:29,276 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 00:26:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_curr_sbuf [2021-11-21 00:26:29,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_curr_sbuf [2021-11-21 00:26:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-21 00:26:29,277 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-21 00:26:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure ql_realign_skb [2021-11-21 00:26:29,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_realign_skb [2021-11-21 00:26:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-21 00:26:29,277 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-21 00:26:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_io_error_detected [2021-11-21 00:26:29,277 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_io_error_detected [2021-11-21 00:26:29,278 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_routing_entries [2021-11-21 00:26:29,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_routing_entries [2021-11-21 00:26:29,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:26:29,278 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-21 00:26:29,278 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-21 00:26:29,278 INFO L130 BoogieDeclarations]: Found specification of procedure ql_process_mac_split_rx_intr [2021-11-21 00:26:29,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_process_mac_split_rx_intr [2021-11-21 00:26:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_suspend [2021-11-21 00:26:29,279 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_suspend [2021-11-21 00:26:29,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-11-21 00:26:29,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-11-21 00:26:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2021-11-21 00:26:29,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2021-11-21 00:26:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-21 00:26:29,302 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-21 00:26:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:26:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure __vlan_hwaccel_put_tag [2021-11-21 00:26:29,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __vlan_hwaccel_put_tag [2021-11-21 00:26:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure ql_validate_flash [2021-11-21 00:26:29,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_validate_flash [2021-11-21 00:26:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-21 00:26:29,303 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-21 00:26:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure ql_cancel_all_work_sync [2021-11-21 00:26:29,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_cancel_all_work_sync [2021-11-21 00:26:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-21 00:26:29,303 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-21 00:26:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 00:26:29,304 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 00:26:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-21 00:26:29,304 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-21 00:26:29,305 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_8000_flash_params [2021-11-21 00:26:29,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_8000_flash_params [2021-11-21 00:26:29,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 00:26:29,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 00:26:29,306 INFO L130 BoogieDeclarations]: Found specification of procedure ql_check_lb_frame [2021-11-21 00:26:29,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_check_lb_frame [2021-11-21 00:26:29,306 INFO L130 BoogieDeclarations]: Found specification of procedure pci_restore_state [2021-11-21 00:26:29,306 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_restore_state [2021-11-21 00:26:29,306 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2021-11-21 00:26:29,306 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2021-11-21 00:26:29,306 INFO L130 BoogieDeclarations]: Found specification of procedure ql_categorize_rx_err [2021-11-21 00:26:29,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_categorize_rx_err [2021-11-21 00:26:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-21 00:26:29,307 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-21 00:26:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 00:26:29,307 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 00:26:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-21 00:26:29,307 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-21 00:26:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_initialize [2021-11-21 00:26:29,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_initialize [2021-11-21 00:26:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-11-21 00:26:29,307 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-11-21 00:26:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_sh_reg [2021-11-21 00:26:29,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_sh_reg [2021-11-21 00:26:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-11-21 00:26:29,308 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-11-21 00:26:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 00:26:29,308 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 00:26:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-21 00:26:29,308 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-21 00:26:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_db_reg [2021-11-21 00:26:29,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_db_reg [2021-11-21 00:26:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 00:26:29,309 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 00:26:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mb_get_port_cfg [2021-11-21 00:26:29,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mb_get_port_cfg [2021-11-21 00:26:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_vlan_rx_add_vid [2021-11-21 00:26:29,309 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_vlan_rx_add_vid [2021-11-21 00:26:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:26:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-11-21 00:26:29,310 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-11-21 00:26:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-11-21 00:26:29,310 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-11-21 00:26:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 00:26:29,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 00:26:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_change_mtu [2021-11-21 00:26:29,310 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_change_mtu [2021-11-21 00:26:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_fix_features [2021-11-21 00:26:29,311 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_fix_features [2021-11-21 00:26:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_down [2021-11-21 00:26:29,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_down [2021-11-21 00:26:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 00:26:29,311 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 00:26:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-21 00:26:29,311 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-21 00:26:29,312 INFO L130 BoogieDeclarations]: Found specification of procedure ql_queue_fw_error [2021-11-21 00:26:29,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_queue_fw_error [2021-11-21 00:26:29,312 INFO L130 BoogieDeclarations]: Found specification of procedure ql_unmap_send [2021-11-21 00:26:29,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_unmap_send [2021-11-21 00:26:29,312 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-21 00:26:29,312 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-21 00:26:29,312 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mpi_handler [2021-11-21 00:26:29,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mpi_handler [2021-11-21 00:26:29,313 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_xgmac_reg64 [2021-11-21 00:26:29,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_xgmac_reg64 [2021-11-21 00:26:29,313 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-21 00:26:29,313 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-21 00:26:29,313 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mb_set_mgmnt_traffic_ctl [2021-11-21 00:26:29,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mb_set_mgmnt_traffic_ctl [2021-11-21 00:26:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_other_func_reg [2021-11-21 00:26:29,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_other_func_reg [2021-11-21 00:26:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-21 00:26:29,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-21 00:26:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_reg_rdy [2021-11-21 00:26:29,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_reg_rdy [2021-11-21 00:26:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_routing_reg [2021-11-21 00:26:29,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_routing_reg [2021-11-21 00:26:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-21 00:26:29,315 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-21 00:26:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-21 00:26:29,315 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-21 00:26:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mb_set_led_cfg [2021-11-21 00:26:29,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mb_set_led_cfg [2021-11-21 00:26:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_cfg [2021-11-21 00:26:29,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_cfg [2021-11-21 00:26:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_mac_addr_reg [2021-11-21 00:26:29,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_mac_addr_reg [2021-11-21 00:26:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure ql_lbq_block_size [2021-11-21 00:26:29,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_lbq_block_size [2021-11-21 00:26:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-21 00:26:29,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-21 00:26:29,317 INFO L130 BoogieDeclarations]: Found specification of procedure ql_own_firmware [2021-11-21 00:26:29,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_own_firmware [2021-11-21 00:26:29,317 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-21 00:26:29,317 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-21 00:26:29,317 INFO L130 BoogieDeclarations]: Found specification of procedure netif_get_num_default_rss_queues [2021-11-21 00:26:29,317 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_get_num_default_rss_queues [2021-11-21 00:26:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_curr_lchunk [2021-11-21 00:26:29,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_curr_lchunk [2021-11-21 00:26:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_ets_regs [2021-11-21 00:26:29,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_ets_regs [2021-11-21 00:26:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_cfg [2021-11-21 00:26:29,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_cfg [2021-11-21 00:26:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-21 00:26:29,319 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-21 00:26:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-21 00:26:29,319 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-21 00:26:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:26:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read32 [2021-11-21 00:26:29,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read32 [2021-11-21 00:26:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_mac_addr [2021-11-21 00:26:29,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_mac_addr [2021-11-21 00:26:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_intr_states [2021-11-21 00:26:29,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_intr_states [2021-11-21 00:26:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2021-11-21 00:26:29,320 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2021-11-21 00:26:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_resume [2021-11-21 00:26:29,320 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_resume [2021-11-21 00:26:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure ql_core_dump [2021-11-21 00:26:29,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_core_dump [2021-11-21 00:26:30,961 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:26:30,969 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:26:31,085 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 00:27:02,658 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:27:09,273 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:27:09,274 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 00:27:09,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:27:09 BoogieIcfgContainer [2021-11-21 00:27:09,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:27:09,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:27:09,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:27:09,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:27:09,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:26:18" (1/3) ... [2021-11-21 00:27:09,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c906b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:27:09, skipping insertion in model container [2021-11-21 00:27:09,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:26:27" (2/3) ... [2021-11-21 00:27:09,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c906b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:27:09, skipping insertion in model container [2021-11-21 00:27:09,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:27:09" (3/3) ... [2021-11-21 00:27:09,294 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qlge--qlge.ko-entry_point.cil.out.i [2021-11-21 00:27:09,300 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:27:09,301 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:27:09,377 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:27:09,385 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:27:09,385 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:27:09,502 INFO L276 IsEmpty]: Start isEmpty. Operand has 3704 states, 2260 states have (on average 1.331858407079646) internal successors, (3010), 2334 states have internal predecessors, (3010), 1207 states have call successors, (1207), 236 states have call predecessors, (1207), 235 states have return successors, (1197), 1182 states have call predecessors, (1197), 1197 states have call successors, (1197) [2021-11-21 00:27:09,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-21 00:27:09,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:27:09,554 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:27:09,555 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:27:09,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:27:09,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1405795938, now seen corresponding path program 1 times [2021-11-21 00:27:09,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:27:09,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563388521] [2021-11-21 00:27:09,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:27:09,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:27:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:27:10,994 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-21 00:27:10,995 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:27:10,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563388521] [2021-11-21 00:27:10,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563388521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:27:10,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:27:10,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:27:11,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406789186] [2021-11-21 00:27:11,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:27:11,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:27:11,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:27:11,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:27:11,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:27:11,066 INFO L87 Difference]: Start difference. First operand has 3704 states, 2260 states have (on average 1.331858407079646) internal successors, (3010), 2334 states have internal predecessors, (3010), 1207 states have call successors, (1207), 236 states have call predecessors, (1207), 235 states have return successors, (1197), 1182 states have call predecessors, (1197), 1197 states have call successors, (1197) Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-21 00:27:14,222 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:27:17,686 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:27:20,207 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:27:23,338 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:27:25,233 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:27:31,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:27:31,927 INFO L93 Difference]: Finished difference Result 10796 states and 15827 transitions. [2021-11-21 00:27:31,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:27:31,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 121 [2021-11-21 00:27:31,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:27:32,032 INFO L225 Difference]: With dead ends: 10796 [2021-11-21 00:27:32,033 INFO L226 Difference]: Without dead ends: 7068 [2021-11-21 00:27:32,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:27:32,079 INFO L933 BasicCegarLoop]: 6415 mSDtfsCounter, 4983 mSDsluCounter, 5262 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 8 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4988 SdHoareTripleChecker+Valid, 11069 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:27:32,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4988 Valid, 11069 Invalid, 1461 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 1450 Invalid, 3 Unknown, 0 Unchecked, 20.1s Time] [2021-11-21 00:27:32,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7068 states. [2021-11-21 00:27:32,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7068 to 7059. [2021-11-21 00:27:32,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7059 states, 4300 states have (on average 1.3213953488372092) internal successors, (5682), 4429 states have internal predecessors, (5682), 2300 states have call successors, (2300), 460 states have call predecessors, (2300), 458 states have return successors, (2303), 2261 states have call predecessors, (2303), 2298 states have call successors, (2303) [2021-11-21 00:27:33,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7059 states to 7059 states and 10285 transitions. [2021-11-21 00:27:33,028 INFO L78 Accepts]: Start accepts. Automaton has 7059 states and 10285 transitions. Word has length 121 [2021-11-21 00:27:33,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:27:33,031 INFO L470 AbstractCegarLoop]: Abstraction has 7059 states and 10285 transitions. [2021-11-21 00:27:33,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-21 00:27:33,034 INFO L276 IsEmpty]: Start isEmpty. Operand 7059 states and 10285 transitions. [2021-11-21 00:27:33,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-21 00:27:33,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:27:33,047 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:27:33,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:27:33,051 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:27:33,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:27:33,055 INFO L85 PathProgramCache]: Analyzing trace with hash 105927183, now seen corresponding path program 1 times [2021-11-21 00:27:33,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:27:33,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847233165] [2021-11-21 00:27:33,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:27:33,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:27:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:27:33,888 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-21 00:27:33,889 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:27:33,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847233165] [2021-11-21 00:27:33,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847233165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:27:33,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:27:33,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:27:33,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698479469] [2021-11-21 00:27:33,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:27:33,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:27:33,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:27:33,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:27:33,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:27:33,894 INFO L87 Difference]: Start difference. First operand 7059 states and 10285 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-21 00:27:36,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:27:37,795 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:27:42,390 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:27:44,906 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:27:46,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:27:48,884 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:27:50,939 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:27:52,694 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:27:55,852 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:27:57,147 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:27:58,678 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:01,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:28:01,980 INFO L93 Difference]: Finished difference Result 20893 states and 30421 transitions. [2021-11-21 00:28:01,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:28:01,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 130 [2021-11-21 00:28:01,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:28:02,132 INFO L225 Difference]: With dead ends: 20893 [2021-11-21 00:28:02,133 INFO L226 Difference]: Without dead ends: 13853 [2021-11-21 00:28:02,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:28:02,189 INFO L933 BasicCegarLoop]: 6019 mSDtfsCounter, 5138 mSDsluCounter, 5333 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5141 SdHoareTripleChecker+Valid, 10740 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:28:02,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5141 Valid, 10740 Invalid, 1293 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1287 Invalid, 5 Unknown, 0 Unchecked, 27.3s Time] [2021-11-21 00:28:02,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13853 states. [2021-11-21 00:28:02,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13853 to 13846. [2021-11-21 00:28:03,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13846 states, 8438 states have (on average 1.320929130125622) internal successors, (11146), 8694 states have internal predecessors, (11146), 4499 states have call successors, (4499), 911 states have call predecessors, (4499), 908 states have return successors, (4511), 4420 states have call predecessors, (4511), 4497 states have call successors, (4511) [2021-11-21 00:28:03,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13846 states to 13846 states and 20156 transitions. [2021-11-21 00:28:03,108 INFO L78 Accepts]: Start accepts. Automaton has 13846 states and 20156 transitions. Word has length 130 [2021-11-21 00:28:03,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:28:03,111 INFO L470 AbstractCegarLoop]: Abstraction has 13846 states and 20156 transitions. [2021-11-21 00:28:03,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-21 00:28:03,112 INFO L276 IsEmpty]: Start isEmpty. Operand 13846 states and 20156 transitions. [2021-11-21 00:28:03,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-21 00:28:03,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:28:03,136 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 00:28:03,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:28:03,136 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:28:03,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:28:03,137 INFO L85 PathProgramCache]: Analyzing trace with hash -674229498, now seen corresponding path program 1 times [2021-11-21 00:28:03,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:28:03,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984924060] [2021-11-21 00:28:03,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:28:03,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:28:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:28:03,935 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-21 00:28:03,936 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:28:03,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984924060] [2021-11-21 00:28:03,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984924060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:28:03,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:28:03,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:28:03,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279492781] [2021-11-21 00:28:03,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:28:03,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:28:03,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:28:03,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:28:03,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:28:03,939 INFO L87 Difference]: Start difference. First operand 13846 states and 20156 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-21 00:28:06,139 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:08,749 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:11,763 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:28:18,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:20,020 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:21,437 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:25,492 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:27,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:28:27,208 INFO L93 Difference]: Finished difference Result 39778 states and 57921 transitions. [2021-11-21 00:28:27,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:28:27,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 151 [2021-11-21 00:28:27,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:28:27,435 INFO L225 Difference]: With dead ends: 39778 [2021-11-21 00:28:27,435 INFO L226 Difference]: Without dead ends: 25951 [2021-11-21 00:28:27,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:28:27,532 INFO L933 BasicCegarLoop]: 6562 mSDtfsCounter, 4918 mSDsluCounter, 5336 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4922 SdHoareTripleChecker+Valid, 11289 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:28:27,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4922 Valid, 11289 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1363 Invalid, 5 Unknown, 0 Unchecked, 22.4s Time] [2021-11-21 00:28:27,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25951 states. [2021-11-21 00:28:29,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25951 to 25943. [2021-11-21 00:28:29,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25943 states, 15832 states have (on average 1.3228903486609398) internal successors, (20944), 16305 states have internal predecessors, (20944), 8407 states have call successors, (8407), 1706 states have call predecessors, (8407), 1703 states have return successors, (8431), 8268 states have call predecessors, (8431), 8405 states have call successors, (8431) [2021-11-21 00:28:29,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25943 states to 25943 states and 37782 transitions. [2021-11-21 00:28:29,279 INFO L78 Accepts]: Start accepts. Automaton has 25943 states and 37782 transitions. Word has length 151 [2021-11-21 00:28:29,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:28:29,280 INFO L470 AbstractCegarLoop]: Abstraction has 25943 states and 37782 transitions. [2021-11-21 00:28:29,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-21 00:28:29,280 INFO L276 IsEmpty]: Start isEmpty. Operand 25943 states and 37782 transitions. [2021-11-21 00:28:29,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-21 00:28:29,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:28:29,307 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 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] [2021-11-21 00:28:29,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:28:29,307 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:28:29,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:28:29,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1747239250, now seen corresponding path program 1 times [2021-11-21 00:28:29,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:28:29,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388281419] [2021-11-21 00:28:29,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:28:29,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:28:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:28:30,371 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-11-21 00:28:30,373 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:28:30,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388281419] [2021-11-21 00:28:30,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388281419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:28:30,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:28:30,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:28:30,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083594770] [2021-11-21 00:28:30,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:28:30,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:28:30,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:28:30,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:28:30,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:28:30,378 INFO L87 Difference]: Start difference. First operand 25943 states and 37782 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-21 00:28:32,587 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:35,315 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:37,762 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:28:39,906 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:43,836 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:47,881 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:50,551 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:52,607 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:56,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:28:56,409 INFO L93 Difference]: Finished difference Result 64759 states and 94304 transitions. [2021-11-21 00:28:56,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:28:56,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 192 [2021-11-21 00:28:56,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:28:56,798 INFO L225 Difference]: With dead ends: 64759 [2021-11-21 00:28:56,799 INFO L226 Difference]: Without dead ends: 38835 [2021-11-21 00:28:56,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:28:56,926 INFO L933 BasicCegarLoop]: 8445 mSDtfsCounter, 5228 mSDsluCounter, 5321 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 16 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5233 SdHoareTripleChecker+Valid, 13158 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:28:56,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5233 Valid, 13158 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1699 Invalid, 5 Unknown, 0 Unchecked, 24.7s Time] [2021-11-21 00:28:56,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38835 states. [2021-11-21 00:28:59,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38835 to 38827. [2021-11-21 00:28:59,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38827 states, 23696 states have (on average 1.3219530722484807) internal successors, (31325), 24400 states have internal predecessors, (31325), 12570 states have call successors, (12570), 2564 states have call predecessors, (12570), 2560 states have return successors, (12608), 12363 states have call predecessors, (12608), 12568 states have call successors, (12608) [2021-11-21 00:28:59,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38827 states to 38827 states and 56503 transitions. [2021-11-21 00:28:59,403 INFO L78 Accepts]: Start accepts. Automaton has 38827 states and 56503 transitions. Word has length 192 [2021-11-21 00:28:59,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:28:59,404 INFO L470 AbstractCegarLoop]: Abstraction has 38827 states and 56503 transitions. [2021-11-21 00:28:59,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-21 00:28:59,405 INFO L276 IsEmpty]: Start isEmpty. Operand 38827 states and 56503 transitions. [2021-11-21 00:28:59,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-21 00:28:59,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:28:59,441 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 9, 9, 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] [2021-11-21 00:28:59,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:28:59,442 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:28:59,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:28:59,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1415797862, now seen corresponding path program 1 times [2021-11-21 00:28:59,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:28:59,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711208714] [2021-11-21 00:28:59,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:28:59,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:28:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:00,354 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-21 00:29:00,355 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:29:00,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711208714] [2021-11-21 00:29:00,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711208714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:29:00,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:29:00,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:29:00,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092905274] [2021-11-21 00:29:00,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:29:00,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:29:00,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:29:00,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:29:00,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:29:00,358 INFO L87 Difference]: Start difference. First operand 38827 states and 56503 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-21 00:29:02,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:05,109 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:07,576 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:29:11,701 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:14,369 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:16,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:19,660 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:24,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:29:24,779 INFO L93 Difference]: Finished difference Result 101089 states and 146350 transitions. [2021-11-21 00:29:24,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:29:24,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 213 [2021-11-21 00:29:24,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:29:25,462 INFO L225 Difference]: With dead ends: 101089 [2021-11-21 00:29:25,462 INFO L226 Difference]: Without dead ends: 62281 [2021-11-21 00:29:25,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:29:25,656 INFO L933 BasicCegarLoop]: 7224 mSDtfsCounter, 3568 mSDsluCounter, 5311 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3574 SdHoareTripleChecker+Valid, 11933 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:29:25,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3574 Valid, 11933 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1576 Invalid, 5 Unknown, 0 Unchecked, 22.5s Time] [2021-11-21 00:29:25,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62281 states. [2021-11-21 00:29:29,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62281 to 62274. [2021-11-21 00:29:29,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62274 states, 38230 states have (on average 1.3200627779230971) internal successors, (50466), 39359 states have internal predecessors, (50466), 19651 states have call successors, (19651), 4399 states have call predecessors, (19651), 4392 states have return successors, (19740), 19330 states have call predecessors, (19740), 19649 states have call successors, (19740) [2021-11-21 00:29:30,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62274 states to 62274 states and 89857 transitions. [2021-11-21 00:29:30,038 INFO L78 Accepts]: Start accepts. Automaton has 62274 states and 89857 transitions. Word has length 213 [2021-11-21 00:29:30,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:29:30,038 INFO L470 AbstractCegarLoop]: Abstraction has 62274 states and 89857 transitions. [2021-11-21 00:29:30,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-21 00:29:30,039 INFO L276 IsEmpty]: Start isEmpty. Operand 62274 states and 89857 transitions. [2021-11-21 00:29:30,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-21 00:29:30,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:29:30,112 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:29:30,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:29:30,112 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:29:30,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:29:30,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2088933976, now seen corresponding path program 1 times [2021-11-21 00:29:30,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:29:30,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898976351] [2021-11-21 00:29:30,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:30,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:29:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:31,006 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-11-21 00:29:31,006 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:29:31,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898976351] [2021-11-21 00:29:31,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898976351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:29:31,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:29:31,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:29:31,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311940188] [2021-11-21 00:29:31,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:29:31,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:29:31,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:29:31,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:29:31,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:29:31,010 INFO L87 Difference]: Start difference. First operand 62274 states and 89857 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 00:29:33,036 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:35,128 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:37,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:38,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:41,493 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:44,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:29:52,628 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:55,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:57,384 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:07,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:07,194 INFO L93 Difference]: Finished difference Result 124721 states and 181345 transitions. [2021-11-21 00:30:07,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:30:07,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 206 [2021-11-21 00:30:07,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:07,903 INFO L225 Difference]: With dead ends: 124721 [2021-11-21 00:30:07,903 INFO L226 Difference]: Without dead ends: 62466 [2021-11-21 00:30:08,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:30:08,227 INFO L933 BasicCegarLoop]: 4752 mSDtfsCounter, 5 mSDsluCounter, 16085 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18996 SdHoareTripleChecker+Invalid, 2477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:08,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 18996 Invalid, 2477 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2468 Invalid, 6 Unknown, 0 Unchecked, 33.5s Time] [2021-11-21 00:30:08,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62466 states. [2021-11-21 00:30:11,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62466 to 62370. [2021-11-21 00:30:11,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62370 states, 38302 states have (on average 1.3194611247454442) internal successors, (50538), 39431 states have internal predecessors, (50538), 19651 states have call successors, (19651), 4399 states have call predecessors, (19651), 4416 states have return successors, (20086), 19354 states have call predecessors, (20086), 19649 states have call successors, (20086) [2021-11-21 00:30:12,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62370 states to 62370 states and 90275 transitions. [2021-11-21 00:30:12,541 INFO L78 Accepts]: Start accepts. Automaton has 62370 states and 90275 transitions. Word has length 206 [2021-11-21 00:30:12,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:12,543 INFO L470 AbstractCegarLoop]: Abstraction has 62370 states and 90275 transitions. [2021-11-21 00:30:12,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 00:30:12,544 INFO L276 IsEmpty]: Start isEmpty. Operand 62370 states and 90275 transitions. [2021-11-21 00:30:12,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-21 00:30:12,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:12,623 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:30:12,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:30:12,624 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:30:12,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:12,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1156798312, now seen corresponding path program 1 times [2021-11-21 00:30:12,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:12,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143078864] [2021-11-21 00:30:12,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:12,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:13,152 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-11-21 00:30:13,152 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:13,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143078864] [2021-11-21 00:30:13,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143078864] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:30:13,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680211132] [2021-11-21 00:30:13,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:13,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:30:13,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:30:13,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:30:13,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:30:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:16,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 8770 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 00:30:16,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:30:17,165 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-11-21 00:30:17,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:30:17,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680211132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:17,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:30:17,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2021-11-21 00:30:17,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888906811] [2021-11-21 00:30:17,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:17,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:30:17,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:17,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:30:17,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:30:17,168 INFO L87 Difference]: Start difference. First operand 62370 states and 90275 transitions. Second operand has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 states have internal predecessors, (89), 5 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) [2021-11-21 00:30:19,422 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:22,735 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:26,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:30:33,697 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:37,487 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:40,282 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:43,300 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:50,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:50,628 INFO L93 Difference]: Finished difference Result 125081 states and 184021 transitions. [2021-11-21 00:30:50,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:30:50,629 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 states have internal predecessors, (89), 5 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) Word has length 211 [2021-11-21 00:30:50,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:51,016 INFO L225 Difference]: With dead ends: 125081 [2021-11-21 00:30:51,016 INFO L226 Difference]: Without dead ends: 62610 [2021-11-21 00:30:51,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:30:51,578 INFO L933 BasicCegarLoop]: 4739 mSDtfsCounter, 16 mSDsluCounter, 15978 mSDsCounter, 0 mSdLazyCounter, 2606 mSolverCounterSat, 23 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 18877 SdHoareTripleChecker+Invalid, 2633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2606 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:51,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 18877 Invalid, 2633 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 2606 Invalid, 4 Unknown, 0 Unchecked, 31.0s Time] [2021-11-21 00:30:51,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62610 states. [2021-11-21 00:30:53,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62610 to 62586. [2021-11-21 00:30:54,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62586 states, 38410 states have (on average 1.319187711533455) internal successors, (50670), 39575 states have internal predecessors, (50670), 19723 states have call successors, (19723), 4399 states have call predecessors, (19723), 4452 states have return successors, (20218), 19426 states have call predecessors, (20218), 19721 states have call successors, (20218) [2021-11-21 00:30:54,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62586 states to 62586 states and 90611 transitions. [2021-11-21 00:30:54,476 INFO L78 Accepts]: Start accepts. Automaton has 62586 states and 90611 transitions. Word has length 211 [2021-11-21 00:30:54,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:54,477 INFO L470 AbstractCegarLoop]: Abstraction has 62586 states and 90611 transitions. [2021-11-21 00:30:54,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 states have internal predecessors, (89), 5 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) [2021-11-21 00:30:54,477 INFO L276 IsEmpty]: Start isEmpty. Operand 62586 states and 90611 transitions. [2021-11-21 00:30:54,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-21 00:30:54,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:54,538 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:30:54,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:30:54,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:30:54,766 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:30:54,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:54,766 INFO L85 PathProgramCache]: Analyzing trace with hash -442095770, now seen corresponding path program 1 times [2021-11-21 00:30:54,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:54,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640912664] [2021-11-21 00:30:54,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:54,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:55,539 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-11-21 00:30:55,540 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:55,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640912664] [2021-11-21 00:30:55,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640912664] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:30:55,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119473461] [2021-11-21 00:30:55,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:55,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:30:55,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:30:55,546 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:30:55,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:30:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:57,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 8772 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 00:30:57,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:30:58,399 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-11-21 00:30:58,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:30:58,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119473461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:58,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:30:58,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2021-11-21 00:30:58,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513338016] [2021-11-21 00:30:58,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:58,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:30:58,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:58,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:30:58,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:30:58,401 INFO L87 Difference]: Start difference. First operand 62586 states and 90611 transitions. Second operand has 7 states, 6 states have (on average 15.0) internal successors, (90), 7 states have internal predecessors, (90), 5 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) [2021-11-21 00:30:59,681 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:01,769 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:03,844 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:06,029 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:08,097 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:10,156 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:13,553 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:17,100 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:31:21,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:24,201 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:27,182 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:33,031 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:35,751 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:37,802 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:40,755 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:42,811 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:51,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:31:51,736 INFO L93 Difference]: Finished difference Result 125513 states and 184717 transitions. [2021-11-21 00:31:51,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:31:51,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.0) internal successors, (90), 7 states have internal predecessors, (90), 5 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) Word has length 212 [2021-11-21 00:31:51,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:31:52,384 INFO L225 Difference]: With dead ends: 125513 [2021-11-21 00:31:52,385 INFO L226 Difference]: Without dead ends: 62826 [2021-11-21 00:31:52,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:31:52,610 INFO L933 BasicCegarLoop]: 4724 mSDtfsCounter, 37 mSDsluCounter, 26601 mSDsCounter, 0 mSdLazyCounter, 3920 mSolverCounterSat, 32 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 28254 SdHoareTripleChecker+Invalid, 3964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3920 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:31:52,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 28254 Invalid, 3964 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 3920 Invalid, 12 Unknown, 0 Unchecked, 51.2s Time] [2021-11-21 00:31:52,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62826 states. [2021-11-21 00:31:54,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62826 to 62586. [2021-11-21 00:31:54,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62586 states, 38410 states have (on average 1.319187711533455) internal successors, (50670), 39575 states have internal predecessors, (50670), 19723 states have call successors, (19723), 4399 states have call predecessors, (19723), 4452 states have return successors, (20218), 19426 states have call predecessors, (20218), 19721 states have call successors, (20218) [2021-11-21 00:31:54,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62586 states to 62586 states and 90611 transitions. [2021-11-21 00:31:54,885 INFO L78 Accepts]: Start accepts. Automaton has 62586 states and 90611 transitions. Word has length 212 [2021-11-21 00:31:54,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:31:54,886 INFO L470 AbstractCegarLoop]: Abstraction has 62586 states and 90611 transitions. [2021-11-21 00:31:54,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.0) internal successors, (90), 7 states have internal predecessors, (90), 5 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) [2021-11-21 00:31:54,887 INFO L276 IsEmpty]: Start isEmpty. Operand 62586 states and 90611 transitions. [2021-11-21 00:31:54,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-21 00:31:54,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:31:54,924 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:31:54,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:31:55,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:31:55,150 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:31:55,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:31:55,151 INFO L85 PathProgramCache]: Analyzing trace with hash -2004636643, now seen corresponding path program 1 times [2021-11-21 00:31:55,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:31:55,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523932352] [2021-11-21 00:31:55,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:55,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:31:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:55,824 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-11-21 00:31:55,825 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:31:55,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523932352] [2021-11-21 00:31:55,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523932352] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:31:55,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561599998] [2021-11-21 00:31:55,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:55,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:31:55,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:31:55,830 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:31:55,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:31:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:58,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 8774 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 00:31:58,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:31:58,671 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-11-21 00:31:58,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:31:58,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561599998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:31:58,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:31:58,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2021-11-21 00:31:58,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335333725] [2021-11-21 00:31:58,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:31:58,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:31:58,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:31:58,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:31:58,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:31:58,674 INFO L87 Difference]: Start difference. First operand 62586 states and 90611 transitions. Second operand has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) [2021-11-21 00:32:00,798 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:03,934 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:07,892 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:32:10,666 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:32:12,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:32:21,948 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:25,031 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:27,091 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:28,341 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:31,113 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:35,355 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:38,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:38,694 INFO L93 Difference]: Finished difference Result 125535 states and 184641 transitions. [2021-11-21 00:32:38,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:32:38,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) Word has length 213 [2021-11-21 00:32:38,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:39,433 INFO L225 Difference]: With dead ends: 125535 [2021-11-21 00:32:39,433 INFO L226 Difference]: Without dead ends: 62948 [2021-11-21 00:32:39,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:32:39,711 INFO L933 BasicCegarLoop]: 4723 mSDtfsCounter, 40 mSDsluCounter, 21269 mSDsCounter, 0 mSdLazyCounter, 3277 mSolverCounterSat, 34 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 23536 SdHoareTripleChecker+Invalid, 3321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3277 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:39,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 23536 Invalid, 3321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3277 Invalid, 10 Unknown, 0 Unchecked, 38.1s Time] [2021-11-21 00:32:39,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62948 states. [2021-11-21 00:32:41,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62948 to 62894. [2021-11-21 00:32:41,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62894 states, 38586 states have (on average 1.318872129788006) internal successors, (50890), 39773 states have internal predecessors, (50890), 19811 states have call successors, (19811), 4421 states have call predecessors, (19811), 4496 states have return successors, (20376), 19514 states have call predecessors, (20376), 19809 states have call successors, (20376) [2021-11-21 00:32:42,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62894 states to 62894 states and 91077 transitions. [2021-11-21 00:32:42,457 INFO L78 Accepts]: Start accepts. Automaton has 62894 states and 91077 transitions. Word has length 213 [2021-11-21 00:32:42,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:42,458 INFO L470 AbstractCegarLoop]: Abstraction has 62894 states and 91077 transitions. [2021-11-21 00:32:42,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) [2021-11-21 00:32:42,458 INFO L276 IsEmpty]: Start isEmpty. Operand 62894 states and 91077 transitions. [2021-11-21 00:32:42,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-21 00:32:42,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:42,507 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:32:42,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:32:42,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:32:42,734 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:32:42,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:42,735 INFO L85 PathProgramCache]: Analyzing trace with hash 395143656, now seen corresponding path program 1 times [2021-11-21 00:32:42,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:42,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027884925] [2021-11-21 00:32:42,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:42,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:43,134 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-11-21 00:32:43,134 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:43,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027884925] [2021-11-21 00:32:43,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027884925] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:32:43,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888571940] [2021-11-21 00:32:43,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:43,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:32:43,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:32:43,141 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:32:43,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 00:32:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:45,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 8716 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 00:32:45,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:32:46,042 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-11-21 00:32:46,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:32:46,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888571940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:46,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:32:46,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 13 [2021-11-21 00:32:46,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372577419] [2021-11-21 00:32:46,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:46,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 00:32:46,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:46,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 00:32:46,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-11-21 00:32:46,044 INFO L87 Difference]: Start difference. First operand 62894 states and 91077 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 2 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (28), 5 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-21 00:32:48,163 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:51,616 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:55,783 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:33:06,807 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:08,598 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:13,062 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:14,136 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:16,617 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:19,183 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:20,932 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:23,174 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:24,656 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:28,880 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:34,144 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:37,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:43,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:43,132 INFO L93 Difference]: Finished difference Result 126053 states and 183635 transitions. [2021-11-21 00:33:43,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:33:43,133 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 2 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (28), 5 states have call predecessors, (28), 2 states have call successors, (28) Word has length 208 [2021-11-21 00:33:43,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:43,413 INFO L225 Difference]: With dead ends: 126053 [2021-11-21 00:33:43,413 INFO L226 Difference]: Without dead ends: 63178 [2021-11-21 00:33:43,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-11-21 00:33:43,817 INFO L933 BasicCegarLoop]: 4768 mSDtfsCounter, 6 mSDsluCounter, 48399 mSDsCounter, 0 mSdLazyCounter, 6206 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 47655 SdHoareTripleChecker+Invalid, 6215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6206 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:43,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 47655 Invalid, 6215 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 6206 Invalid, 7 Unknown, 0 Unchecked, 55.0s Time] [2021-11-21 00:33:43,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63178 states. [2021-11-21 00:33:45,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63178 to 63064. [2021-11-21 00:33:45,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63064 states, 38713 states have (on average 1.317206106475861) internal successors, (50993), 39901 states have internal predecessors, (50993), 19811 states have call successors, (19811), 4421 states have call predecessors, (19811), 4539 states have return successors, (20497), 19556 states have call predecessors, (20497), 19809 states have call successors, (20497) [2021-11-21 00:33:46,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63064 states to 63064 states and 91301 transitions. [2021-11-21 00:33:46,275 INFO L78 Accepts]: Start accepts. Automaton has 63064 states and 91301 transitions. Word has length 208 [2021-11-21 00:33:46,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:46,276 INFO L470 AbstractCegarLoop]: Abstraction has 63064 states and 91301 transitions. [2021-11-21 00:33:46,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 2 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (28), 5 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-21 00:33:46,276 INFO L276 IsEmpty]: Start isEmpty. Operand 63064 states and 91301 transitions. [2021-11-21 00:33:46,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-21 00:33:46,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:46,313 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:46,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 00:33:46,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-21 00:33:46,530 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:33:46,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:46,530 INFO L85 PathProgramCache]: Analyzing trace with hash -598153428, now seen corresponding path program 1 times [2021-11-21 00:33:46,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:46,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070285085] [2021-11-21 00:33:46,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:46,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:46,926 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-11-21 00:33:46,926 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:46,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070285085] [2021-11-21 00:33:46,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070285085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:46,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:46,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:33:46,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341300107] [2021-11-21 00:33:46,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:46,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:33:46,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:46,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:33:46,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:33:46,929 INFO L87 Difference]: Start difference. First operand 63064 states and 91301 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-21 00:33:49,663 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:52,267 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:55,071 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:33:58,192 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:00,941 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:03,746 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:05,808 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:11,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:11,141 INFO L93 Difference]: Finished difference Result 126301 states and 183959 transitions. [2021-11-21 00:34:11,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:34:11,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 219 [2021-11-21 00:34:11,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:11,473 INFO L225 Difference]: With dead ends: 126301 [2021-11-21 00:34:11,473 INFO L226 Difference]: Without dead ends: 63256 [2021-11-21 00:34:12,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:34:12,078 INFO L933 BasicCegarLoop]: 4754 mSDtfsCounter, 5 mSDsluCounter, 5362 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 9502 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:12,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 9502 Invalid, 1238 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 1233 Invalid, 5 Unknown, 0 Unchecked, 22.0s Time] [2021-11-21 00:34:12,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63256 states. [2021-11-21 00:34:14,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63256 to 63088. [2021-11-21 00:34:14,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63088 states, 38737 states have (on average 1.3170095774066137) internal successors, (51017), 39925 states have internal predecessors, (51017), 19811 states have call successors, (19811), 4421 states have call predecessors, (19811), 4539 states have return successors, (20497), 19556 states have call predecessors, (20497), 19809 states have call successors, (20497) [2021-11-21 00:34:14,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63088 states to 63088 states and 91325 transitions. [2021-11-21 00:34:14,687 INFO L78 Accepts]: Start accepts. Automaton has 63088 states and 91325 transitions. Word has length 219 [2021-11-21 00:34:14,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:14,688 INFO L470 AbstractCegarLoop]: Abstraction has 63088 states and 91325 transitions. [2021-11-21 00:34:14,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-21 00:34:14,688 INFO L276 IsEmpty]: Start isEmpty. Operand 63088 states and 91325 transitions. [2021-11-21 00:34:14,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-21 00:34:14,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:14,725 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:34:14,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 00:34:14,725 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:34:14,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:14,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1436520391, now seen corresponding path program 1 times [2021-11-21 00:34:14,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:34:14,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970090661] [2021-11-21 00:34:14,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:14,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:34:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:15,391 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-11-21 00:34:15,391 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:34:15,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970090661] [2021-11-21 00:34:15,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970090661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:15,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:15,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:34:15,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174763201] [2021-11-21 00:34:15,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:15,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:34:15,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:34:15,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:34:15,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:34:15,397 INFO L87 Difference]: Start difference. First operand 63088 states and 91325 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-21 00:34:17,598 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:20,169 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:22,914 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:34:30,061 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:32,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:35,099 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:38,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:38,512 INFO L93 Difference]: Finished difference Result 133729 states and 195032 transitions. [2021-11-21 00:34:38,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:34:38,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 213 [2021-11-21 00:34:38,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:38,880 INFO L225 Difference]: With dead ends: 133729 [2021-11-21 00:34:38,880 INFO L226 Difference]: Without dead ends: 70660 [2021-11-21 00:34:39,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:34:39,123 INFO L933 BasicCegarLoop]: 5457 mSDtfsCounter, 602 mSDsluCounter, 5473 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 9 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 10320 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:39,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [784 Valid, 10320 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1306 Invalid, 6 Unknown, 0 Unchecked, 21.1s Time] [2021-11-21 00:34:39,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70660 states. [2021-11-21 00:34:41,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70660 to 63100. [2021-11-21 00:34:41,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63100 states, 38749 states have (on average 1.3169114041652688) internal successors, (51029), 39937 states have internal predecessors, (51029), 19811 states have call successors, (19811), 4421 states have call predecessors, (19811), 4539 states have return successors, (20497), 19556 states have call predecessors, (20497), 19809 states have call successors, (20497) [2021-11-21 00:34:41,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63100 states to 63100 states and 91337 transitions. [2021-11-21 00:34:41,986 INFO L78 Accepts]: Start accepts. Automaton has 63100 states and 91337 transitions. Word has length 213 [2021-11-21 00:34:41,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:41,986 INFO L470 AbstractCegarLoop]: Abstraction has 63100 states and 91337 transitions. [2021-11-21 00:34:41,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-21 00:34:41,987 INFO L276 IsEmpty]: Start isEmpty. Operand 63100 states and 91337 transitions. [2021-11-21 00:34:42,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-21 00:34:42,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:42,018 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:34:42,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 00:34:42,018 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:34:42,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:42,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1725664921, now seen corresponding path program 1 times [2021-11-21 00:34:42,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:34:42,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533978236] [2021-11-21 00:34:42,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:42,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:34:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-11-21 00:34:42,410 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:34:42,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533978236] [2021-11-21 00:34:42,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533978236] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:34:42,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501578261] [2021-11-21 00:34:42,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:42,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:34:42,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:34:42,414 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:34:42,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 00:34:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:44,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 8837 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 00:34:44,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:34:45,208 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-11-21 00:34:45,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:34:45,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501578261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:45,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:34:45,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-21 00:34:45,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027209917] [2021-11-21 00:34:45,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:45,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:34:45,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:34:45,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:34:45,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:34:45,210 INFO L87 Difference]: Start difference. First operand 63100 states and 91337 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-21 00:34:47,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:50,083 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:53,798 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:35:01,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:03,161 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:05,213 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:07,259 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:09,315 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:16,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:35:16,267 INFO L93 Difference]: Finished difference Result 126809 states and 186689 transitions. [2021-11-21 00:35:16,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:35:16,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 227 [2021-11-21 00:35:16,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:35:16,570 INFO L225 Difference]: With dead ends: 126809 [2021-11-21 00:35:16,570 INFO L226 Difference]: Without dead ends: 63728 [2021-11-21 00:35:16,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:35:16,803 INFO L933 BasicCegarLoop]: 4780 mSDtfsCounter, 5 mSDsluCounter, 16164 mSDsCounter, 0 mSdLazyCounter, 2469 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 19103 SdHoareTripleChecker+Invalid, 2476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2469 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:35:16,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 19103 Invalid, 2476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2469 Invalid, 7 Unknown, 0 Unchecked, 28.8s Time] [2021-11-21 00:35:16,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63728 states. [2021-11-21 00:35:18,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63728 to 63264. [2021-11-21 00:35:18,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63264 states, 38889 states have (on average 1.3157705263699246) internal successors, (51169), 40043 states have internal predecessors, (51169), 19811 states have call successors, (19811), 4421 states have call predecessors, (19811), 4563 states have return successors, (20579), 19614 states have call predecessors, (20579), 19809 states have call successors, (20579) [2021-11-21 00:35:19,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63264 states to 63264 states and 91559 transitions. [2021-11-21 00:35:19,453 INFO L78 Accepts]: Start accepts. Automaton has 63264 states and 91559 transitions. Word has length 227 [2021-11-21 00:35:19,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:35:19,454 INFO L470 AbstractCegarLoop]: Abstraction has 63264 states and 91559 transitions. [2021-11-21 00:35:19,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-21 00:35:19,455 INFO L276 IsEmpty]: Start isEmpty. Operand 63264 states and 91559 transitions. [2021-11-21 00:35:19,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-21 00:35:19,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:35:19,487 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:35:19,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-21 00:35:19,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:35:19,688 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:35:19,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:35:19,689 INFO L85 PathProgramCache]: Analyzing trace with hash -76636266, now seen corresponding path program 1 times [2021-11-21 00:35:19,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:35:19,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799881587] [2021-11-21 00:35:19,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:35:19,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:35:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:35:20,091 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-21 00:35:20,092 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:35:20,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799881587] [2021-11-21 00:35:20,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799881587] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:35:20,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979555197] [2021-11-21 00:35:20,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:35:20,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:35:20,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:35:20,094 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:35:20,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 00:35:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:35:22,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 8897 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 00:35:22,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:35:22,937 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-11-21 00:35:22,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:35:22,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979555197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:35:22,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:35:22,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2021-11-21 00:35:22,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417031601] [2021-11-21 00:35:22,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:35:22,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:35:22,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:35:22,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:35:22,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:35:22,939 INFO L87 Difference]: Start difference. First operand 63264 states and 91559 transitions. Second operand has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 7 states have internal predecessors, (103), 4 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-21 00:35:25,060 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:28,304 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:31,877 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:35:37,065 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:38,291 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:42,668 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:45,515 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:47,717 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:49,384 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:51,529 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:53,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:56,108 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:59,573 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:04,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:36:04,740 INFO L93 Difference]: Finished difference Result 126941 states and 185824 transitions. [2021-11-21 00:36:04,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:36:04,741 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 7 states have internal predecessors, (103), 4 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) Word has length 233 [2021-11-21 00:36:04,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:36:05,034 INFO L225 Difference]: With dead ends: 126941 [2021-11-21 00:36:05,034 INFO L226 Difference]: Without dead ends: 63696 [2021-11-21 00:36:05,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:36:05,258 INFO L933 BasicCegarLoop]: 4722 mSDtfsCounter, 38 mSDsluCounter, 26585 mSDsCounter, 0 mSdLazyCounter, 3913 mSolverCounterSat, 37 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 28246 SdHoareTripleChecker+Invalid, 3957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3913 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:36:05,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 28246 Invalid, 3957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3913 Invalid, 7 Unknown, 0 Unchecked, 39.7s Time] [2021-11-21 00:36:05,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63696 states. [2021-11-21 00:36:07,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63696 to 63648. [2021-11-21 00:36:07,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63648 states, 39129 states have (on average 1.3150604411050628) internal successors, (51457), 40283 states have internal predecessors, (51457), 19907 states have call successors, (19907), 4445 states have call predecessors, (19907), 4611 states have return successors, (20717), 19734 states have call predecessors, (20717), 19905 states have call successors, (20717) [2021-11-21 00:36:07,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63648 states to 63648 states and 92081 transitions. [2021-11-21 00:36:07,902 INFO L78 Accepts]: Start accepts. Automaton has 63648 states and 92081 transitions. Word has length 233 [2021-11-21 00:36:07,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:36:07,903 INFO L470 AbstractCegarLoop]: Abstraction has 63648 states and 92081 transitions. [2021-11-21 00:36:07,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 7 states have internal predecessors, (103), 4 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-21 00:36:07,904 INFO L276 IsEmpty]: Start isEmpty. Operand 63648 states and 92081 transitions. [2021-11-21 00:36:07,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-21 00:36:07,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:36:07,944 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:36:07,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 00:36:08,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:36:08,145 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:36:08,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:36:08,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2039072415, now seen corresponding path program 1 times [2021-11-21 00:36:08,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:36:08,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319725356] [2021-11-21 00:36:08,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:36:08,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:36:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:36:08,497 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-21 00:36:08,497 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:36:08,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319725356] [2021-11-21 00:36:08,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319725356] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:36:08,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352557662] [2021-11-21 00:36:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:36:08,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:36:08,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:36:08,499 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:36:08,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 00:36:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:36:10,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 8899 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 00:36:10,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:36:11,420 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-11-21 00:36:11,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:36:11,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352557662] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:36:11,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:36:11,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2021-11-21 00:36:11,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607387215] [2021-11-21 00:36:11,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:36:11,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:36:11,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:36:11,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:36:11,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:36:11,423 INFO L87 Difference]: Start difference. First operand 63648 states and 92081 transitions. Second operand has 7 states, 6 states have (on average 17.333333333333332) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-21 00:36:13,547 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:16,548 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:20,519 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:36:30,216 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:33,097 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:34,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:36,595 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:45,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:36:45,935 INFO L93 Difference]: Finished difference Result 127709 states and 186720 transitions. [2021-11-21 00:36:45,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:36:45,936 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.333333333333332) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) Word has length 234 [2021-11-21 00:36:45,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:36:46,441 INFO L225 Difference]: With dead ends: 127709 [2021-11-21 00:36:46,441 INFO L226 Difference]: Without dead ends: 64080 [2021-11-21 00:36:46,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:36:46,641 INFO L933 BasicCegarLoop]: 4719 mSDtfsCounter, 42 mSDsluCounter, 21257 mSDsCounter, 0 mSdLazyCounter, 3271 mSolverCounterSat, 39 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 23524 SdHoareTripleChecker+Invalid, 3315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3271 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:36:46,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 23524 Invalid, 3315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3271 Invalid, 5 Unknown, 0 Unchecked, 32.7s Time] [2021-11-21 00:36:46,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64080 states. [2021-11-21 00:36:48,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64080 to 64032. [2021-11-21 00:36:48,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64032 states, 39369 states have (on average 1.3143590134369683) internal successors, (51745), 40523 states have internal predecessors, (51745), 20003 states have call successors, (20003), 4469 states have call predecessors, (20003), 4659 states have return successors, (20955), 19854 states have call predecessors, (20955), 20001 states have call successors, (20955) [2021-11-21 00:36:49,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64032 states to 64032 states and 92703 transitions. [2021-11-21 00:36:49,220 INFO L78 Accepts]: Start accepts. Automaton has 64032 states and 92703 transitions. Word has length 234 [2021-11-21 00:36:49,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:36:49,221 INFO L470 AbstractCegarLoop]: Abstraction has 64032 states and 92703 transitions. [2021-11-21 00:36:49,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.333333333333332) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-21 00:36:49,221 INFO L276 IsEmpty]: Start isEmpty. Operand 64032 states and 92703 transitions. [2021-11-21 00:36:49,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-21 00:36:49,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:36:49,263 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:36:49,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 00:36:49,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-21 00:36:49,464 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:36:49,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:36:49,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1130061830, now seen corresponding path program 1 times [2021-11-21 00:36:49,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:36:49,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583697862] [2021-11-21 00:36:49,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:36:49,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:36:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:36:49,891 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2021-11-21 00:36:49,891 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:36:49,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583697862] [2021-11-21 00:36:49,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583697862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:36:49,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:36:49,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:36:49,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337590097] [2021-11-21 00:36:49,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:36:49,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:36:49,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:36:49,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:36:49,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:36:49,894 INFO L87 Difference]: Start difference. First operand 64032 states and 92703 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-21 00:36:52,069 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:54,681 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:58,636 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:37:06,379 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:08,834 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:10,818 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:14,271 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:20,568 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:23,542 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:24,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:37:24,753 INFO L93 Difference]: Finished difference Result 151229 states and 223436 transitions. [2021-11-21 00:37:24,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:37:24,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 215 [2021-11-21 00:37:24,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:37:25,186 INFO L225 Difference]: With dead ends: 151229 [2021-11-21 00:37:25,187 INFO L226 Difference]: Without dead ends: 87216 [2021-11-21 00:37:25,629 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 [2021-11-21 00:37:25,631 INFO L933 BasicCegarLoop]: 6757 mSDtfsCounter, 1834 mSDsluCounter, 13039 mSDsCounter, 0 mSdLazyCounter, 2196 mSolverCounterSat, 370 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2210 SdHoareTripleChecker+Valid, 18418 SdHoareTripleChecker+Invalid, 2572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 2196 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:37:25,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2210 Valid, 18418 Invalid, 2572 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [370 Valid, 2196 Invalid, 6 Unknown, 0 Unchecked, 32.1s Time] [2021-11-21 00:37:25,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87216 states. [2021-11-21 00:37:28,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87216 to 64056. [2021-11-21 00:37:28,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64056 states, 39393 states have (on average 1.3141674916863402) internal successors, (51769), 40547 states have internal predecessors, (51769), 20003 states have call successors, (20003), 4469 states have call predecessors, (20003), 4659 states have return successors, (20955), 19854 states have call predecessors, (20955), 20001 states have call successors, (20955) [2021-11-21 00:37:28,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64056 states to 64056 states and 92727 transitions. [2021-11-21 00:37:28,396 INFO L78 Accepts]: Start accepts. Automaton has 64056 states and 92727 transitions. Word has length 215 [2021-11-21 00:37:28,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:37:28,397 INFO L470 AbstractCegarLoop]: Abstraction has 64056 states and 92727 transitions. [2021-11-21 00:37:28,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-21 00:37:28,397 INFO L276 IsEmpty]: Start isEmpty. Operand 64056 states and 92727 transitions. [2021-11-21 00:37:28,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-21 00:37:28,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:37:28,716 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:37:28,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-21 00:37:28,738 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:37:28,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:37:28,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1542738223, now seen corresponding path program 1 times [2021-11-21 00:37:28,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:37:28,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806721600] [2021-11-21 00:37:28,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:37:28,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:37:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:37:29,148 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-21 00:37:29,148 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:37:29,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806721600] [2021-11-21 00:37:29,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806721600] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:37:29,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957882649] [2021-11-21 00:37:29,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:37:29,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:37:29,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:37:29,154 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:37:29,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-21 00:37:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:37:31,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 8901 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 00:37:31,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:37:32,201 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-11-21 00:37:32,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:37:32,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957882649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:37:32,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:37:32,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2021-11-21 00:37:32,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45156997] [2021-11-21 00:37:32,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:37:32,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:37:32,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:37:32,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:37:32,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:37:32,204 INFO L87 Difference]: Start difference. First operand 64056 states and 92727 transitions. Second operand has 7 states, 6 states have (on average 17.5) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-21 00:37:34,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:37,840 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:42,251 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:37:54,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:57,138 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:59,739 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:38:01,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:38:03,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:38:13,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:38:13,349 INFO L93 Difference]: Finished difference Result 128501 states and 188024 transitions. [2021-11-21 00:38:13,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:38:13,350 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.5) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) Word has length 235 [2021-11-21 00:38:13,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:38:13,653 INFO L225 Difference]: With dead ends: 128501 [2021-11-21 00:38:13,653 INFO L226 Difference]: Without dead ends: 64320 [2021-11-21 00:38:13,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:38:13,872 INFO L933 BasicCegarLoop]: 4718 mSDtfsCounter, 36 mSDsluCounter, 26579 mSDsCounter, 0 mSdLazyCounter, 3917 mSolverCounterSat, 41 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 28231 SdHoareTripleChecker+Invalid, 3963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3917 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:38:13,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 28231 Invalid, 3963 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [41 Valid, 3917 Invalid, 5 Unknown, 0 Unchecked, 39.0s Time] [2021-11-21 00:38:13,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64320 states. [2021-11-21 00:38:16,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64320 to 64212. [2021-11-21 00:38:16,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64212 states, 39489 states have (on average 1.3140114968725467) internal successors, (51889), 40643 states have internal predecessors, (51889), 20051 states have call successors, (20051), 4469 states have call predecessors, (20051), 4671 states have return successors, (21147), 19914 states have call predecessors, (21147), 20049 states have call successors, (21147) [2021-11-21 00:38:16,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64212 states to 64212 states and 93087 transitions. [2021-11-21 00:38:16,704 INFO L78 Accepts]: Start accepts. Automaton has 64212 states and 93087 transitions. Word has length 235 [2021-11-21 00:38:16,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:38:16,705 INFO L470 AbstractCegarLoop]: Abstraction has 64212 states and 93087 transitions. [2021-11-21 00:38:16,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.5) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-21 00:38:16,705 INFO L276 IsEmpty]: Start isEmpty. Operand 64212 states and 93087 transitions. [2021-11-21 00:38:16,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-11-21 00:38:16,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:38:16,747 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:38:16,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-21 00:38:16,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-21 00:38:16,948 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:38:16,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:38:16,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1359021318, now seen corresponding path program 1 times [2021-11-21 00:38:16,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:38:16,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265354919] [2021-11-21 00:38:16,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:38:16,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:38:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:38:17,308 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-21 00:38:17,308 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:38:17,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265354919] [2021-11-21 00:38:17,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265354919] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:38:17,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199499166] [2021-11-21 00:38:17,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:38:17,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:38:17,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:38:17,310 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:38:17,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857bae1a-5ff8-4ccf-8139-890445cc4e2d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-21 00:38:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:38:19,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 8903 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 00:38:19,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:38:20,202 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-11-21 00:38:20,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:38:20,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199499166] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:38:20,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:38:20,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4] total 14 [2021-11-21 00:38:20,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070029448] [2021-11-21 00:38:20,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:38:20,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:38:20,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:38:20,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:38:20,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:38:20,204 INFO L87 Difference]: Start difference. First operand 64212 states and 93087 transitions. Second operand has 12 states, 11 states have (on average 9.272727272727273) internal successors, (102), 9 states have internal predecessors, (102), 3 states have call successors, (37), 2 states have call predecessors, (37), 5 states have return successors, (34), 6 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-21 00:38:22,326 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:38:25,943 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:38:31,479 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []