./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW --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 fa9ec5014a93fa4ada80c2707ca9ad7bdd1ffda04a5a3c96f283fdf229b22b41 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:22:16,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:22:16,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:22:16,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:22:16,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:22:16,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:22:16,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:22:16,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:22:16,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:22:16,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:22:16,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:22:16,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:22:16,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:22:16,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:22:16,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:22:16,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:22:16,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:22:16,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:22:16,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:22:16,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:22:16,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:22:16,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:22:16,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:22:16,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:22:16,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:22:17,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:22:17,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:22:17,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:22:17,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:22:17,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:22:17,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:22:17,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:22:17,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:22:17,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:22:17,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:22:17,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:22:17,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:22:17,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:22:17,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:22:17,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:22:17,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:22:17,024 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:22:17,091 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:22:17,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:22:17,092 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:22:17,092 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:22:17,093 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:22:17,094 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:22:17,094 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:22:17,094 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:22:17,094 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:22:17,095 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:22:17,096 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:22:17,096 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:22:17,097 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:22:17,097 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:22:17,097 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:22:17,097 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:22:17,098 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:22:17,098 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:22:17,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:22:17,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:22:17,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:22:17,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:22:17,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:22:17,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:22:17,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:22:17,101 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:22:17,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:22:17,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:22:17,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:22:17,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:22:17,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:22:17,103 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:22:17,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:22:17,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:22:17,104 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:22:17,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:22:17,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:22:17,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:22:17,105 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa9ec5014a93fa4ada80c2707ca9ad7bdd1ffda04a5a3c96f283fdf229b22b41 [2022-11-23 14:22:17,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:22:17,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:22:17,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:22:17,473 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:22:17,473 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:22:17,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i [2022-11-23 14:22:20,940 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:22:21,868 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:22:21,869 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i [2022-11-23 14:22:21,950 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/data/b3bc8ce3a/e7a928ea98fc426d9b9f29e8253b05ff/FLAG9817a9474 [2022-11-23 14:22:21,973 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/data/b3bc8ce3a/e7a928ea98fc426d9b9f29e8253b05ff [2022-11-23 14:22:21,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:22:21,982 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:22:21,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:22:21,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:22:21,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:22:21,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:22:21" (1/1) ... [2022-11-23 14:22:21,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@315991ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:21, skipping insertion in model container [2022-11-23 14:22:21,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:22:21" (1/1) ... [2022-11-23 14:22:22,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:22:22,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:22:24,329 WARN L237 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_cc8694f5-c5f8-4769-97f9-22a213bf3f07/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i[223336,223349] [2022-11-23 14:22:26,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:22:26,732 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:22:26,947 WARN L237 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_cc8694f5-c5f8-4769-97f9-22a213bf3f07/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i[223336,223349] [2022-11-23 14:22:27,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:22:27,540 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:22:27,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:27 WrapperNode [2022-11-23 14:22:27,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:22:27,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:22:27,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:22:27,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:22:27,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:27" (1/1) ... [2022-11-23 14:22:27,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:27" (1/1) ... [2022-11-23 14:22:28,259 INFO L138 Inliner]: procedures = 418, calls = 3784, calls flagged for inlining = 181, calls inlined = 158, statements flattened = 7733 [2022-11-23 14:22:28,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:22:28,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:22:28,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:22:28,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:22:28,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:27" (1/1) ... [2022-11-23 14:22:28,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:27" (1/1) ... [2022-11-23 14:22:28,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:27" (1/1) ... [2022-11-23 14:22:28,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:27" (1/1) ... [2022-11-23 14:22:28,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:27" (1/1) ... [2022-11-23 14:22:28,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:27" (1/1) ... [2022-11-23 14:22:28,857 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:27" (1/1) ... [2022-11-23 14:22:28,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:27" (1/1) ... [2022-11-23 14:22:28,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:22:28,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:22:28,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:22:28,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:22:28,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:27" (1/1) ... [2022-11-23 14:22:28,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:22:28,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:22:29,001 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:22:29,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:22:29,046 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_radio_disable [2022-11-23 14:22:29,046 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_radio_disable [2022-11-23 14:22:29,046 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_set_key [2022-11-23 14:22:29,046 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_set_key [2022-11-23 14:22:29,047 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_use_fixed_rate_ap [2022-11-23 14:22:29,047 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_use_fixed_rate_ap [2022-11-23 14:22:29,047 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-23 14:22:29,047 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-23 14:22:29,047 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_set_rts_threshold [2022-11-23 14:22:29,048 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_set_rts_threshold [2022-11-23 14:22:29,048 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-23 14:22:29,048 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-23 14:22:29,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:22:29,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:22:29,049 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_remove_interface [2022-11-23 14:22:29,049 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_remove_interface [2022-11-23 14:22:29,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-11-23 14:22:29,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-11-23 14:22:29,049 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-23 14:22:29,049 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-23 14:22:29,050 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2022-11-23 14:22:29,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2022-11-23 14:22:29,050 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-23 14:22:29,050 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-23 14:22:29,050 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-23 14:22:29,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-23 14:22:29,051 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-23 14:22:29,051 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-23 14:22:29,051 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_prepare_multicast [2022-11-23 14:22:29,051 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_prepare_multicast [2022-11-23 14:22:29,052 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_feed_fw_image [2022-11-23 14:22:29,052 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_feed_fw_image [2022-11-23 14:22:29,052 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_release_firmware [2022-11-23 14:22:29,052 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_release_firmware [2022-11-23 14:22:29,052 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-23 14:22:29,053 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-23 14:22:29,053 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-23 14:22:29,053 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_radio_enable [2022-11-23 14:22:29,053 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_radio_enable [2022-11-23 14:22:29,053 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_is_mgmt [2022-11-23 14:22:29,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_is_mgmt [2022-11-23 14:22:29,054 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxd_ap_process [2022-11-23 14:22:29,054 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxd_ap_process [2022-11-23 14:22:29,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-11-23 14:22:29,054 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_fw_unlock [2022-11-23 14:22:29,055 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_fw_unlock [2022-11-23 14:22:29,055 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_get_stats [2022-11-23 14:22:29,055 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_get_stats [2022-11-23 14:22:29,055 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-23 14:22:29,055 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-23 14:22:29,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:22:29,056 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-23 14:22:29,056 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-23 14:22:29,056 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 14:22:29,056 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 14:22:29,056 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_configure_filter [2022-11-23 14:22:29,057 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_configure_filter [2022-11-23 14:22:29,057 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_set_ht_caps [2022-11-23 14:22:29,057 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_set_ht_caps [2022-11-23 14:22:29,057 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_start [2022-11-23 14:22:29,057 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_start [2022-11-23 14:22:29,058 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_request_fw [2022-11-23 14:22:29,058 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_request_fw [2022-11-23 14:22:29,058 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 14:22:29,058 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 14:22:29,058 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-23 14:22:29,058 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-23 14:22:29,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 14:22:29,059 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 14:22:29,059 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 14:22:29,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:22:29,059 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_load_firmware [2022-11-23 14:22:29,060 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_load_firmware [2022-11-23 14:22:29,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:22:29,060 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-23 14:22:29,060 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-23 14:22:29,060 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2022-11-23 14:22:29,060 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2022-11-23 14:22:29,061 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_probe_hw [2022-11-23 14:22:29,061 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_probe_hw [2022-11-23 14:22:29,061 INFO L130 BoogieDeclarations]: Found specification of procedure SET_IEEE80211_PERM_ADDR [2022-11-23 14:22:29,061 INFO L138 BoogieDeclarations]: Found implementation of procedure SET_IEEE80211_PERM_ADDR [2022-11-23 14:22:29,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 14:22:29,062 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 14:22:29,062 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_name [2022-11-23 14:22:29,062 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_name [2022-11-23 14:22:29,062 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_tx [2022-11-23 14:22:29,062 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_tx [2022-11-23 14:22:29,066 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-11-23 14:22:29,067 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-11-23 14:22:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2022-11-23 14:22:29,067 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2022-11-23 14:22:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_sw_scan_start [2022-11-23 14:22:29,068 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_sw_scan_start [2022-11-23 14:22:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-23 14:22:29,068 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-23 14:22:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-23 14:22:29,068 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-23 14:22:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxd_ap_refill [2022-11-23 14:22:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxd_ap_refill [2022-11-23 14:22:29,069 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_set_caps [2022-11-23 14:22:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_set_caps [2022-11-23 14:22:29,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2022-11-23 14:22:29,069 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2022-11-23 14:22:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2022-11-23 14:22:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_set_wmm_mode [2022-11-23 14:22:29,070 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_set_wmm_mode [2022-11-23 14:22:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:22:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_get_survey [2022-11-23 14:22:29,070 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_get_survey [2022-11-23 14:22:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2022-11-23 14:22:29,071 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2022-11-23 14:22:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:22:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2022-11-23 14:22:29,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2022-11-23 14:22:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 14:22:29,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 14:22:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:22:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 14:22:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_add_stream [2022-11-23 14:22:29,073 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_add_stream [2022-11-23 14:22:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxd_sta_init [2022-11-23 14:22:29,073 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxd_sta_init [2022-11-23 14:22:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure _cond_resched [2022-11-23 14:22:29,073 INFO L138 BoogieDeclarations]: Found implementation of procedure _cond_resched [2022-11-23 14:22:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-23 14:22:29,074 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-23 14:22:29,074 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_radio_control [2022-11-23 14:22:29,074 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_radio_control [2022-11-23 14:22:29,075 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 14:22:29,075 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 14:22:29,075 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_queue_work [2022-11-23 14:22:29,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_queue_work [2022-11-23 14:22:29,075 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_post_pervif_cmd [2022-11-23 14:22:29,075 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_post_pervif_cmd [2022-11-23 14:22:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:22:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:22:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_wake_queues [2022-11-23 14:22:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_wake_queues [2022-11-23 14:22:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-23 14:22:29,077 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-23 14:22:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-23 14:22:29,077 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-23 14:22:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_hw_reset [2022-11-23 14:22:29,077 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_hw_reset [2022-11-23 14:22:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_bss_start [2022-11-23 14:22:29,078 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_bss_start [2022-11-23 14:22:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 14:22:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 14:22:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_get_chandef_type [2022-11-23 14:22:29,078 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_get_chandef_type [2022-11-23 14:22:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 14:22:29,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 14:22:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_enable_bsses [2022-11-23 14:22:29,079 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_enable_bsses [2022-11-23 14:22:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_interrupt [2022-11-23 14:22:29,079 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_interrupt [2022-11-23 14:22:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-23 14:22:29,080 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-23 14:22:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-23 14:22:29,080 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-23 14:22:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2022-11-23 14:22:29,080 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2022-11-23 14:22:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_conf_tx [2022-11-23 14:22:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_conf_tx [2022-11-23 14:22:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_set_pre_scan [2022-11-23 14:22:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_set_pre_scan [2022-11-23 14:22:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_is_data [2022-11-23 14:22:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_is_data [2022-11-23 14:22:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_set_post_scan [2022-11-23 14:22:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_set_post_scan [2022-11-23 14:22:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_load_fw_image [2022-11-23 14:22:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_load_fw_image [2022-11-23 14:22:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_init_txqs [2022-11-23 14:22:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_init_txqs [2022-11-23 14:22:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_remove_vif [2022-11-23 14:22:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_remove_vif [2022-11-23 14:22:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 14:22:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 14:22:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_is_data_qos [2022-11-23 14:22:29,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_is_data_qos [2022-11-23 14:22:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight32 [2022-11-23 14:22:29,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight32 [2022-11-23 14:22:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 14:22:29,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 14:22:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-23 14:22:29,085 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-23 14:22:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_hdrlen [2022-11-23 14:22:29,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_hdrlen [2022-11-23 14:22:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_init_firmware [2022-11-23 14:22:29,085 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_init_firmware [2022-11-23 14:22:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-23 14:22:29,086 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-23 14:22:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_enable_sniffer [2022-11-23 14:22:29,086 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_enable_sniffer [2022-11-23 14:22:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 14:22:29,086 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 14:22:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2022-11-23 14:22:29,087 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2022-11-23 14:22:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2022-11-23 14:22:29,087 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2022-11-23 14:22:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_bbp_reg_access [2022-11-23 14:22:29,088 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_bbp_reg_access [2022-11-23 14:22:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 14:22:29,088 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 14:22:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-23 14:22:29,088 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-23 14:22:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2022-11-23 14:22:29,089 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2022-11-23 14:22:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_rf_antenna [2022-11-23 14:22:29,089 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_rf_antenna [2022-11-23 14:22:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_reload_firmware [2022-11-23 14:22:29,089 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_reload_firmware [2022-11-23 14:22:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-23 14:22:29,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-23 14:22:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:22:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_channel_to_frequency [2022-11-23 14:22:29,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_channel_to_frequency [2022-11-23 14:22:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:22:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-23 14:22:29,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-23 14:22:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_add_dma_header [2022-11-23 14:22:29,091 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_add_dma_header [2022-11-23 14:22:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_bss_info_changed [2022-11-23 14:22:29,091 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_bss_info_changed [2022-11-23 14:22:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_remove_stream [2022-11-23 14:22:29,092 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_remove_stream [2022-11-23 14:22:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_sw_scan_complete [2022-11-23 14:22:29,092 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_sw_scan_complete [2022-11-23 14:22:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_txq_reclaim [2022-11-23 14:22:29,092 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_txq_reclaim [2022-11-23 14:22:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_set_radio_preamble [2022-11-23 14:22:29,093 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_set_radio_preamble [2022-11-23 14:22:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_config [2022-11-23 14:22:29,093 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_config [2022-11-23 14:22:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:22:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-23 14:22:29,094 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-23 14:22:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-11-23 14:22:29,094 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-11-23 14:22:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_txq_deinit [2022-11-23 14:22:29,094 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_txq_deinit [2022-11-23 14:22:29,095 INFO L130 BoogieDeclarations]: Found specification of procedure rxq_refill [2022-11-23 14:22:29,095 INFO L138 BoogieDeclarations]: Found implementation of procedure rxq_refill [2022-11-23 14:22:29,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-23 14:22:29,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-23 14:22:29,095 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxd_sta_process [2022-11-23 14:22:29,095 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxd_sta_process [2022-11-23 14:22:29,096 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_fw_lock [2022-11-23 14:22:29,096 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_fw_lock [2022-11-23 14:22:29,096 INFO L130 BoogieDeclarations]: Found specification of procedure __mwl8k_cmd_mac_multicast_adr [2022-11-23 14:22:29,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __mwl8k_cmd_mac_multicast_adr [2022-11-23 14:22:29,096 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxd_ap_init [2022-11-23 14:22:29,096 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxd_ap_init [2022-11-23 14:22:29,097 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-23 14:22:29,097 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-23 14:22:29,097 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-11-23 14:22:29,097 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-11-23 14:22:29,097 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_destroy_ba [2022-11-23 14:22:29,098 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_destroy_ba [2022-11-23 14:22:29,098 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_disable [2022-11-23 14:22:29,098 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_disable [2022-11-23 14:22:29,098 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2022-11-23 14:22:29,098 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2022-11-23 14:22:29,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-11-23 14:22:29,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-11-23 14:22:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_sta_remove [2022-11-23 14:22:29,099 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_sta_remove [2022-11-23 14:22:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_tx_start [2022-11-23 14:22:29,099 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_tx_start [2022-11-23 14:22:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_remove_dma_header [2022-11-23 14:22:29,100 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_remove_dma_header [2022-11-23 14:22:29,100 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_stop [2022-11-23 14:22:29,100 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_stop [2022-11-23 14:22:29,100 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_update_mac_addr [2022-11-23 14:22:29,100 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_update_mac_addr [2022-11-23 14:22:29,100 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 14:22:29,101 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 14:22:29,101 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-11-23 14:22:29,101 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-11-23 14:22:29,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:22:29,101 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-11-23 14:22:29,101 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-11-23 14:22:29,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 14:22:29,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 14:22:29,102 INFO L130 BoogieDeclarations]: Found specification of procedure __ilog2_u32 [2022-11-23 14:22:29,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __ilog2_u32 [2022-11-23 14:22:29,102 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_stop_queues [2022-11-23 14:22:29,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_stop_queues [2022-11-23 14:22:29,103 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_encryption_set_cmd_info [2022-11-23 14:22:29,103 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_encryption_set_cmd_info [2022-11-23 14:22:29,103 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-23 14:22:29,103 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-23 14:22:29,103 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_sta_add [2022-11-23 14:22:29,103 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_sta_add [2022-11-23 14:22:29,104 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-23 14:22:29,104 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-23 14:22:29,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-23 14:22:29,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-23 14:22:29,104 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_set_mac_addr [2022-11-23 14:22:29,104 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_set_mac_addr [2022-11-23 14:22:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_add_interface [2022-11-23 14:22:29,105 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_add_interface [2022-11-23 14:22:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2022-11-23 14:22:29,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2022-11-23 14:22:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-23 14:22:29,105 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-23 14:22:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure legacy_rate_mask_to_array [2022-11-23 14:22:29,106 INFO L138 BoogieDeclarations]: Found implementation of procedure legacy_rate_mask_to_array [2022-11-23 14:22:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_ampdu_action [2022-11-23 14:22:29,106 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_ampdu_action [2022-11-23 14:22:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxd_sta_refill [2022-11-23 14:22:29,106 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxd_sta_refill [2022-11-23 14:22:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2022-11-23 14:22:29,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ffs [2022-11-23 14:22:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-23 14:22:29,107 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-23 14:22:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-23 14:22:29,107 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-23 14:22:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_release_fw [2022-11-23 14:22:29,108 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_release_fw [2022-11-23 14:22:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxq_deinit [2022-11-23 14:22:29,108 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxq_deinit [2022-11-23 14:22:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-23 14:22:29,108 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-23 14:22:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_send_fw_load_cmd [2022-11-23 14:22:29,109 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_send_fw_load_cmd [2022-11-23 14:22:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2022-11-23 14:22:29,109 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2022-11-23 14:22:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:22:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_set_new_stn_del [2022-11-23 14:22:29,110 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_set_new_stn_del [2022-11-23 14:22:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_post_cmd [2022-11-23 14:22:29,110 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_post_cmd [2022-11-23 14:22:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_lookup_stream [2022-11-23 14:22:29,110 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_lookup_stream [2022-11-23 14:22:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2022-11-23 14:22:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2022-11-23 14:22:29,111 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2022-11-23 14:22:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_enable [2022-11-23 14:22:29,111 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_enable [2022-11-23 14:22:30,575 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:22:30,585 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:22:36,322 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 14:22:51,651 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:22:55,073 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:22:55,075 INFO L300 CfgBuilder]: Removed 35 assume(true) statements. [2022-11-23 14:22:55,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:22:55 BoogieIcfgContainer [2022-11-23 14:22:55,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:22:55,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:22:55,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:22:55,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:22:55,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:22:21" (1/3) ... [2022-11-23 14:22:55,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4efca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:22:55, skipping insertion in model container [2022-11-23 14:22:55,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:27" (2/3) ... [2022-11-23 14:22:55,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4efca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:22:55, skipping insertion in model container [2022-11-23 14:22:55,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:22:55" (3/3) ... [2022-11-23 14:22:55,094 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i [2022-11-23 14:22:55,115 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:22:55,115 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:22:55,253 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:22:55,265 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5abe0db3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:22:55,266 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:22:55,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 2486 states, 1603 states have (on average 1.3786650031191516) internal successors, (2210), 1673 states have internal predecessors, (2210), 722 states have call successors, (722), 160 states have call predecessors, (722), 159 states have return successors, (712), 702 states have call predecessors, (712), 712 states have call successors, (712) [2022-11-23 14:22:55,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-23 14:22:55,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:55,322 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:22:55,323 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:22:55,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:55,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1257764889, now seen corresponding path program 1 times [2022-11-23 14:22:55,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:55,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413904060] [2022-11-23 14:22:55,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:55,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:56,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-23 14:22:56,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:56,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413904060] [2022-11-23 14:22:56,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413904060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:56,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:56,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:22:56,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165564307] [2022-11-23 14:22:56,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:56,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:22:56,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:56,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:22:56,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:22:56,656 INFO L87 Difference]: Start difference. First operand has 2486 states, 1603 states have (on average 1.3786650031191516) internal successors, (2210), 1673 states have internal predecessors, (2210), 722 states have call successors, (722), 160 states have call predecessors, (722), 159 states have return successors, (712), 702 states have call predecessors, (712), 712 states have call successors, (712) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2022-11-23 14:22:58,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:23:00,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:23:03,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:23:10,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:23:11,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:11,335 INFO L93 Difference]: Finished difference Result 7314 states and 10772 transitions. [2022-11-23 14:23:11,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:23:11,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 186 [2022-11-23 14:23:11,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:11,412 INFO L225 Difference]: With dead ends: 7314 [2022-11-23 14:23:11,413 INFO L226 Difference]: Without dead ends: 4839 [2022-11-23 14:23:11,439 INFO L412 NwaCegarLoop]: 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 [2022-11-23 14:23:11,443 INFO L413 NwaCegarLoop]: 4238 mSDtfsCounter, 3511 mSDsluCounter, 3357 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3513 SdHoareTripleChecker+Valid, 7595 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:11,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3513 Valid, 7595 Invalid, 572 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 561 Invalid, 2 Unknown, 0 Unchecked, 14.0s Time] [2022-11-23 14:23:11,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4839 states. [2022-11-23 14:23:11,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4839 to 4836. [2022-11-23 14:23:11,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4836 states, 3132 states have (on average 1.36845466155811) internal successors, (4286), 3250 states have internal predecessors, (4286), 1387 states have call successors, (1387), 317 states have call predecessors, (1387), 316 states have return successors, (1388), 1364 states have call predecessors, (1388), 1386 states have call successors, (1388) [2022-11-23 14:23:11,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4836 states to 4836 states and 7061 transitions. [2022-11-23 14:23:11,939 INFO L78 Accepts]: Start accepts. Automaton has 4836 states and 7061 transitions. Word has length 186 [2022-11-23 14:23:11,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:11,940 INFO L495 AbstractCegarLoop]: Abstraction has 4836 states and 7061 transitions. [2022-11-23 14:23:11,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2022-11-23 14:23:11,941 INFO L276 IsEmpty]: Start isEmpty. Operand 4836 states and 7061 transitions. [2022-11-23 14:23:11,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-23 14:23:11,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:11,960 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:23:11,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:23:11,961 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:23:11,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:11,962 INFO L85 PathProgramCache]: Analyzing trace with hash -543044277, now seen corresponding path program 1 times [2022-11-23 14:23:11,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:11,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657832232] [2022-11-23 14:23:11,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:11,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:13,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-23 14:23:13,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:13,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657832232] [2022-11-23 14:23:13,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657832232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:13,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:13,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:23:13,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626143039] [2022-11-23 14:23:13,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:13,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:23:13,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:13,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:23:13,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:23:13,316 INFO L87 Difference]: Start difference. First operand 4836 states and 7061 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-23 14:23:15,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:23:17,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:23:24,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:23:31,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:23:34,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:34,093 INFO L93 Difference]: Finished difference Result 9611 states and 14079 transitions. [2022-11-23 14:23:34,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:23:34,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 189 [2022-11-23 14:23:34,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:34,180 INFO L225 Difference]: With dead ends: 9611 [2022-11-23 14:23:34,181 INFO L226 Difference]: Without dead ends: 9606 [2022-11-23 14:23:34,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:23:34,193 INFO L413 NwaCegarLoop]: 4176 mSDtfsCounter, 3558 mSDsluCounter, 7423 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3558 SdHoareTripleChecker+Valid, 11599 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:34,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3558 Valid, 11599 Invalid, 863 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 861 Invalid, 1 Unknown, 0 Unchecked, 20.2s Time] [2022-11-23 14:23:34,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9606 states. [2022-11-23 14:23:34,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9606 to 9598. [2022-11-23 14:23:34,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9598 states, 6222 states have (on average 1.370138219222115) internal successors, (8525), 6458 states have internal predecessors, (8525), 2743 states have call successors, (2743), 633 states have call predecessors, (2743), 632 states have return successors, (2794), 2698 states have call predecessors, (2794), 2742 states have call successors, (2794) [2022-11-23 14:23:34,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9598 states to 9598 states and 14062 transitions. [2022-11-23 14:23:34,966 INFO L78 Accepts]: Start accepts. Automaton has 9598 states and 14062 transitions. Word has length 189 [2022-11-23 14:23:34,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:34,967 INFO L495 AbstractCegarLoop]: Abstraction has 9598 states and 14062 transitions. [2022-11-23 14:23:34,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-23 14:23:34,969 INFO L276 IsEmpty]: Start isEmpty. Operand 9598 states and 14062 transitions. [2022-11-23 14:23:34,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-11-23 14:23:34,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:34,988 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 7, 7, 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] [2022-11-23 14:23:34,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:23:34,993 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:23:34,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:35,004 INFO L85 PathProgramCache]: Analyzing trace with hash -501564301, now seen corresponding path program 1 times [2022-11-23 14:23:35,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:35,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783113659] [2022-11-23 14:23:35,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:35,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:35,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-23 14:23:35,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:35,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783113659] [2022-11-23 14:23:35,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783113659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:35,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:35,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:23:35,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921639515] [2022-11-23 14:23:35,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:35,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:23:35,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:35,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:23:35,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:23:35,483 INFO L87 Difference]: Start difference. First operand 9598 states and 14062 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-23 14:23:37,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:23:42,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:23:47,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:47,092 INFO L93 Difference]: Finished difference Result 21742 states and 31551 transitions. [2022-11-23 14:23:47,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:23:47,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 224 [2022-11-23 14:23:47,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:47,175 INFO L225 Difference]: With dead ends: 21742 [2022-11-23 14:23:47,175 INFO L226 Difference]: Without dead ends: 12205 [2022-11-23 14:23:47,229 INFO L412 NwaCegarLoop]: 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 [2022-11-23 14:23:47,230 INFO L413 NwaCegarLoop]: 3541 mSDtfsCounter, 976 mSDsluCounter, 3119 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 6660 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:47,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 6660 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2022-11-23 14:23:47,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12205 states. [2022-11-23 14:23:47,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12205 to 12198. [2022-11-23 14:23:47,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12198 states, 7880 states have (on average 1.3607868020304568) internal successors, (10723), 8186 states have internal predecessors, (10723), 3395 states have call successors, (3395), 923 states have call predecessors, (3395), 922 states have return successors, (3452), 3348 states have call predecessors, (3452), 3394 states have call successors, (3452) [2022-11-23 14:23:47,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12198 states to 12198 states and 17570 transitions. [2022-11-23 14:23:47,907 INFO L78 Accepts]: Start accepts. Automaton has 12198 states and 17570 transitions. Word has length 224 [2022-11-23 14:23:47,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:47,909 INFO L495 AbstractCegarLoop]: Abstraction has 12198 states and 17570 transitions. [2022-11-23 14:23:47,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-23 14:23:47,911 INFO L276 IsEmpty]: Start isEmpty. Operand 12198 states and 17570 transitions. [2022-11-23 14:23:47,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-23 14:23:47,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:47,934 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 7, 7, 3, 3, 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] [2022-11-23 14:23:47,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:23:47,935 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:23:47,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:47,937 INFO L85 PathProgramCache]: Analyzing trace with hash -198819522, now seen corresponding path program 1 times [2022-11-23 14:23:47,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:47,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984577773] [2022-11-23 14:23:47,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:47,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:48,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1480 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 1467 trivial. 0 not checked. [2022-11-23 14:23:48,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:48,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984577773] [2022-11-23 14:23:48,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984577773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:48,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:48,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:23:48,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238113009] [2022-11-23 14:23:48,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:48,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:23:48,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:48,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:23:48,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:23:48,413 INFO L87 Difference]: Start difference. First operand 12198 states and 17570 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-23 14:23:50,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:23:52,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:23:57,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:23:58,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:24:03,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:24:03,115 INFO L93 Difference]: Finished difference Result 33570 states and 48549 transitions. [2022-11-23 14:24:03,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:24:03,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 256 [2022-11-23 14:24:03,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:24:03,239 INFO L225 Difference]: With dead ends: 33570 [2022-11-23 14:24:03,239 INFO L226 Difference]: Without dead ends: 21433 [2022-11-23 14:24:03,307 INFO L412 NwaCegarLoop]: 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 [2022-11-23 14:24:03,308 INFO L413 NwaCegarLoop]: 4566 mSDtfsCounter, 3369 mSDsluCounter, 3163 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 72 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3369 SdHoareTripleChecker+Valid, 7729 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:24:03,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3369 Valid, 7729 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 729 Invalid, 1 Unknown, 0 Unchecked, 13.9s Time] [2022-11-23 14:24:03,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21433 states. [2022-11-23 14:24:04,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21433 to 21426. [2022-11-23 14:24:04,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21426 states, 13914 states have (on average 1.3591346844904413) internal successors, (18911), 14458 states have internal predecessors, (18911), 5957 states have call successors, (5957), 1555 states have call predecessors, (5957), 1554 states have return successors, (6048), 5864 states have call predecessors, (6048), 5956 states have call successors, (6048) [2022-11-23 14:24:04,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21426 states to 21426 states and 30916 transitions. [2022-11-23 14:24:04,646 INFO L78 Accepts]: Start accepts. Automaton has 21426 states and 30916 transitions. Word has length 256 [2022-11-23 14:24:04,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:24:04,647 INFO L495 AbstractCegarLoop]: Abstraction has 21426 states and 30916 transitions. [2022-11-23 14:24:04,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-23 14:24:04,648 INFO L276 IsEmpty]: Start isEmpty. Operand 21426 states and 30916 transitions. [2022-11-23 14:24:04,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-23 14:24:04,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:24:04,677 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 7, 7, 3, 3, 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] [2022-11-23 14:24:04,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:24:04,677 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:24:04,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:24:04,679 INFO L85 PathProgramCache]: Analyzing trace with hash -807844078, now seen corresponding path program 1 times [2022-11-23 14:24:04,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:24:04,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742713780] [2022-11-23 14:24:04,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:24:04,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:24:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:24:05,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1480 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1470 trivial. 0 not checked. [2022-11-23 14:24:05,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:24:05,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742713780] [2022-11-23 14:24:05,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742713780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:24:05,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:24:05,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:24:05,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59489833] [2022-11-23 14:24:05,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:24:05,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:24:05,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:24:05,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:24:05,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:24:05,208 INFO L87 Difference]: Start difference. First operand 21426 states and 30916 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 1 states have call successors, (37) [2022-11-23 14:24:06,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:24:10,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:24:11,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:24:13,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 14:24:16,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:24:18,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:24:18,184 INFO L93 Difference]: Finished difference Result 32146 states and 46500 transitions. [2022-11-23 14:24:18,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:24:18,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 1 states have call successors, (37) Word has length 256 [2022-11-23 14:24:18,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:24:18,319 INFO L225 Difference]: With dead ends: 32146 [2022-11-23 14:24:18,319 INFO L226 Difference]: Without dead ends: 21450 [2022-11-23 14:24:18,371 INFO L412 NwaCegarLoop]: 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 [2022-11-23 14:24:18,372 INFO L413 NwaCegarLoop]: 3316 mSDtfsCounter, 4 mSDsluCounter, 3310 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6626 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:24:18,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6626 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2022-11-23 14:24:18,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21450 states. [2022-11-23 14:24:19,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21450 to 21450. [2022-11-23 14:24:19,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21450 states, 13932 states have (on average 1.3586706861900661) internal successors, (18929), 14482 states have internal predecessors, (18929), 5957 states have call successors, (5957), 1555 states have call predecessors, (5957), 1560 states have return successors, (6054), 5864 states have call predecessors, (6054), 5956 states have call successors, (6054) [2022-11-23 14:24:19,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21450 states to 21450 states and 30940 transitions. [2022-11-23 14:24:19,547 INFO L78 Accepts]: Start accepts. Automaton has 21450 states and 30940 transitions. Word has length 256 [2022-11-23 14:24:19,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:24:19,552 INFO L495 AbstractCegarLoop]: Abstraction has 21450 states and 30940 transitions. [2022-11-23 14:24:19,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 1 states have call successors, (37) [2022-11-23 14:24:19,553 INFO L276 IsEmpty]: Start isEmpty. Operand 21450 states and 30940 transitions. [2022-11-23 14:24:19,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-11-23 14:24:19,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:24:19,574 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 7, 7, 3, 3, 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] [2022-11-23 14:24:19,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:24:19,575 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:24:19,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:24:19,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1148018435, now seen corresponding path program 1 times [2022-11-23 14:24:19,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:24:19,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240638390] [2022-11-23 14:24:19,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:24:19,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:24:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:24:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1480 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1470 trivial. 0 not checked. [2022-11-23 14:24:21,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:24:21,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240638390] [2022-11-23 14:24:21,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240638390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:24:21,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:24:21,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 14:24:21,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594181748] [2022-11-23 14:24:21,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:24:21,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 14:24:21,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:24:21,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 14:24:21,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:24:21,061 INFO L87 Difference]: Start difference. First operand 21450 states and 30940 transitions. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 8 states have internal predecessors, (90), 4 states have call successors, (38), 4 states have call predecessors, (38), 2 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-23 14:24:22,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:24:35,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:24:43,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:24:47,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:25:24,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:25:26,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:25:31,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:25:32,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:25:34,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:25:40,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:25:42,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:25:42,373 INFO L93 Difference]: Finished difference Result 49797 states and 71653 transitions. [2022-11-23 14:25:42,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:25:42,374 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 8 states have internal predecessors, (90), 4 states have call successors, (38), 4 states have call predecessors, (38), 2 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) Word has length 257 [2022-11-23 14:25:42,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:25:42,563 INFO L225 Difference]: With dead ends: 49797 [2022-11-23 14:25:42,564 INFO L226 Difference]: Without dead ends: 28408 [2022-11-23 14:25:42,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:25:42,653 INFO L413 NwaCegarLoop]: 1745 mSDtfsCounter, 7415 mSDsluCounter, 4986 mSDsCounter, 0 mSdLazyCounter, 21538 mSolverCounterSat, 2852 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8474 SdHoareTripleChecker+Valid, 6731 SdHoareTripleChecker+Invalid, 24393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 2852 IncrementalHoareTripleChecker+Valid, 21538 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:25:42,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8474 Valid, 6731 Invalid, 24393 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [2852 Valid, 21538 Invalid, 3 Unknown, 0 Unchecked, 79.1s Time] [2022-11-23 14:25:42,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28408 states. [2022-11-23 14:25:43,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28408 to 28028. [2022-11-23 14:25:43,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28028 states, 18026 states have (on average 1.3397869743703539) internal successors, (24151), 18710 states have internal predecessors, (24151), 7829 states have call successors, (7829), 2119 states have call predecessors, (7829), 2172 states have return successors, (8130), 7740 states have call predecessors, (8130), 7828 states have call successors, (8130) [2022-11-23 14:25:44,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28028 states to 28028 states and 40110 transitions. [2022-11-23 14:25:44,378 INFO L78 Accepts]: Start accepts. Automaton has 28028 states and 40110 transitions. Word has length 257 [2022-11-23 14:25:44,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:25:44,379 INFO L495 AbstractCegarLoop]: Abstraction has 28028 states and 40110 transitions. [2022-11-23 14:25:44,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 8 states have internal predecessors, (90), 4 states have call successors, (38), 4 states have call predecessors, (38), 2 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-23 14:25:44,379 INFO L276 IsEmpty]: Start isEmpty. Operand 28028 states and 40110 transitions. [2022-11-23 14:25:44,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-11-23 14:25:44,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:25:44,470 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 7, 7, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:25:44,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:25:44,471 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:25:44,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:25:44,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1002481891, now seen corresponding path program 1 times [2022-11-23 14:25:44,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:25:44,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754151854] [2022-11-23 14:25:44,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:25:44,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:25:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:25:45,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1632 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1622 trivial. 0 not checked. [2022-11-23 14:25:45,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:25:45,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754151854] [2022-11-23 14:25:45,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754151854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:25:45,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:25:45,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:25:45,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61257531] [2022-11-23 14:25:45,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:25:45,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:25:45,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:25:45,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:25:45,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:25:45,462 INFO L87 Difference]: Start difference. First operand 28028 states and 40110 transitions. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-23 14:25:46,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:25:47,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:25:48,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:25:55,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:25:58,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:26:03,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:26:04,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:04,161 INFO L93 Difference]: Finished difference Result 56251 states and 80617 transitions. [2022-11-23 14:26:04,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:26:04,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 432 [2022-11-23 14:26:04,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:04,318 INFO L225 Difference]: With dead ends: 56251 [2022-11-23 14:26:04,318 INFO L226 Difference]: Without dead ends: 28284 [2022-11-23 14:26:04,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:26:04,440 INFO L413 NwaCegarLoop]: 3321 mSDtfsCounter, 16 mSDsluCounter, 6629 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 9950 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:04,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 9950 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 830 Invalid, 1 Unknown, 0 Unchecked, 17.4s Time] [2022-11-23 14:26:04,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28284 states. [2022-11-23 14:26:05,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28284 to 28060. [2022-11-23 14:26:06,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28060 states, 18058 states have (on average 1.3391848488204674) internal successors, (24183), 18742 states have internal predecessors, (24183), 7829 states have call successors, (7829), 2119 states have call predecessors, (7829), 2172 states have return successors, (8130), 7740 states have call predecessors, (8130), 7828 states have call successors, (8130) [2022-11-23 14:26:06,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28060 states to 28060 states and 40142 transitions. [2022-11-23 14:26:06,204 INFO L78 Accepts]: Start accepts. Automaton has 28060 states and 40142 transitions. Word has length 432 [2022-11-23 14:26:06,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:06,205 INFO L495 AbstractCegarLoop]: Abstraction has 28060 states and 40142 transitions. [2022-11-23 14:26:06,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-23 14:26:06,206 INFO L276 IsEmpty]: Start isEmpty. Operand 28060 states and 40142 transitions. [2022-11-23 14:26:06,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2022-11-23 14:26:06,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:06,313 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 7, 7, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:26:06,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:26:06,313 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:26:06,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:06,314 INFO L85 PathProgramCache]: Analyzing trace with hash 195293462, now seen corresponding path program 1 times [2022-11-23 14:26:06,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:06,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352262340] [2022-11-23 14:26:06,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:06,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:07,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1632 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1622 trivial. 0 not checked. [2022-11-23 14:26:07,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:07,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352262340] [2022-11-23 14:26:07,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352262340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:07,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:07,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:26:07,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684163418] [2022-11-23 14:26:07,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:07,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:26:07,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:07,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:26:07,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:26:07,840 INFO L87 Difference]: Start difference. First operand 28060 states and 40142 transitions. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-23 14:26:10,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:26:17,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:26:19,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:26:24,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:26:29,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:26:30,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:30,215 INFO L93 Difference]: Finished difference Result 56411 states and 80841 transitions. [2022-11-23 14:26:30,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:26:30,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 433 [2022-11-23 14:26:30,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:30,333 INFO L225 Difference]: With dead ends: 56411 [2022-11-23 14:26:30,333 INFO L226 Difference]: Without dead ends: 28412 [2022-11-23 14:26:30,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:26:30,422 INFO L413 NwaCegarLoop]: 3326 mSDtfsCounter, 29 mSDsluCounter, 9948 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 13274 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:30,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 13274 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1119 Invalid, 2 Unknown, 0 Unchecked, 21.2s Time] [2022-11-23 14:26:30,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28412 states. [2022-11-23 14:26:31,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28412 to 28076. [2022-11-23 14:26:31,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28076 states, 18074 states have (on average 1.339769835122275) internal successors, (24215), 18758 states have internal predecessors, (24215), 7829 states have call successors, (7829), 2119 states have call predecessors, (7829), 2172 states have return successors, (8130), 7740 states have call predecessors, (8130), 7828 states have call successors, (8130) [2022-11-23 14:26:32,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28076 states to 28076 states and 40174 transitions. [2022-11-23 14:26:32,018 INFO L78 Accepts]: Start accepts. Automaton has 28076 states and 40174 transitions. Word has length 433 [2022-11-23 14:26:32,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:32,021 INFO L495 AbstractCegarLoop]: Abstraction has 28076 states and 40174 transitions. [2022-11-23 14:26:32,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-23 14:26:32,022 INFO L276 IsEmpty]: Start isEmpty. Operand 28076 states and 40174 transitions. [2022-11-23 14:26:32,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-11-23 14:26:32,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:32,102 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 7, 7, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:26:32,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:26:32,103 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:26:32,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:32,104 INFO L85 PathProgramCache]: Analyzing trace with hash -185143139, now seen corresponding path program 1 times [2022-11-23 14:26:32,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:32,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430880942] [2022-11-23 14:26:32,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:32,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:33,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1632 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1622 trivial. 0 not checked. [2022-11-23 14:26:33,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:33,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430880942] [2022-11-23 14:26:33,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430880942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:33,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:33,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:26:33,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107212128] [2022-11-23 14:26:33,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:33,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:26:33,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:33,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:26:33,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:26:33,158 INFO L87 Difference]: Start difference. First operand 28076 states and 40174 transitions. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-23 14:26:35,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:26:39,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:26:41,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:26:43,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:26:49,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:26:50,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:50,983 INFO L93 Difference]: Finished difference Result 56163 states and 80461 transitions. [2022-11-23 14:26:50,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:26:50,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 432 [2022-11-23 14:26:50,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:51,092 INFO L225 Difference]: With dead ends: 56163 [2022-11-23 14:26:51,092 INFO L226 Difference]: Without dead ends: 28148 [2022-11-23 14:26:51,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:26:51,167 INFO L413 NwaCegarLoop]: 3319 mSDtfsCounter, 7 mSDsluCounter, 6607 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 9926 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:51,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 9926 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 846 Invalid, 3 Unknown, 0 Unchecked, 16.5s Time] [2022-11-23 14:26:51,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28148 states. [2022-11-23 14:26:52,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28148 to 28116. [2022-11-23 14:26:52,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28116 states, 18106 states have (on average 1.339169336131669) internal successors, (24247), 18794 states have internal predecessors, (24247), 7833 states have call successors, (7833), 2119 states have call predecessors, (7833), 2176 states have return successors, (8138), 7744 states have call predecessors, (8138), 7832 states have call successors, (8138) [2022-11-23 14:26:52,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28116 states to 28116 states and 40218 transitions. [2022-11-23 14:26:52,490 INFO L78 Accepts]: Start accepts. Automaton has 28116 states and 40218 transitions. Word has length 432 [2022-11-23 14:26:52,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:52,491 INFO L495 AbstractCegarLoop]: Abstraction has 28116 states and 40218 transitions. [2022-11-23 14:26:52,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-23 14:26:52,491 INFO L276 IsEmpty]: Start isEmpty. Operand 28116 states and 40218 transitions. [2022-11-23 14:26:52,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-11-23 14:26:52,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:52,565 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 8, 8, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:26:52,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:26:52,565 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:26:52,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:52,566 INFO L85 PathProgramCache]: Analyzing trace with hash 764572588, now seen corresponding path program 1 times [2022-11-23 14:26:52,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:52,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067918609] [2022-11-23 14:26:52,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:52,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:52,943 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:26:52,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [303231637] [2022-11-23 14:26:52,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:52,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:26:52,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:26:52,947 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:26:52,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:26:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:55,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 5564 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:26:55,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:26:55,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 1509 trivial. 0 not checked. [2022-11-23 14:26:55,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:26:55,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:55,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067918609] [2022-11-23 14:26:55,350 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:26:55,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303231637] [2022-11-23 14:26:55,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303231637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:55,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:55,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:26:55,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133265125] [2022-11-23 14:26:55,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:55,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:26:55,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:55,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:26:55,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:26:55,354 INFO L87 Difference]: Start difference. First operand 28116 states and 40218 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 2 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2022-11-23 14:26:57,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:02,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:08,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:09,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:09,290 INFO L93 Difference]: Finished difference Result 56231 states and 80557 transitions. [2022-11-23 14:27:09,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:27:09,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 2 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 445 [2022-11-23 14:27:09,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:09,441 INFO L225 Difference]: With dead ends: 56231 [2022-11-23 14:27:09,441 INFO L226 Difference]: Without dead ends: 28176 [2022-11-23 14:27:09,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:27:09,654 INFO L413 NwaCegarLoop]: 3318 mSDtfsCounter, 3 mSDsluCounter, 3314 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6632 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:09,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 6632 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2022-11-23 14:27:09,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28176 states. [2022-11-23 14:27:10,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28176 to 28128. [2022-11-23 14:27:10,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28128 states, 18118 states have (on average 1.3389446958825477) internal successors, (24259), 18806 states have internal predecessors, (24259), 7833 states have call successors, (7833), 2119 states have call predecessors, (7833), 2176 states have return successors, (8138), 7744 states have call predecessors, (8138), 7832 states have call successors, (8138) [2022-11-23 14:27:10,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28128 states to 28128 states and 40230 transitions. [2022-11-23 14:27:10,913 INFO L78 Accepts]: Start accepts. Automaton has 28128 states and 40230 transitions. Word has length 445 [2022-11-23 14:27:10,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:10,914 INFO L495 AbstractCegarLoop]: Abstraction has 28128 states and 40230 transitions. [2022-11-23 14:27:10,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 2 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2022-11-23 14:27:10,915 INFO L276 IsEmpty]: Start isEmpty. Operand 28128 states and 40230 transitions. [2022-11-23 14:27:10,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2022-11-23 14:27:10,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:10,988 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 8, 8, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:27:11,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:11,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 14:27:11,211 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:27:11,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:11,212 INFO L85 PathProgramCache]: Analyzing trace with hash 322355984, now seen corresponding path program 1 times [2022-11-23 14:27:11,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:11,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561731987] [2022-11-23 14:27:11,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:11,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:11,671 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:27:11,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048433872] [2022-11-23 14:27:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:11,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:27:11,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:27:11,691 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:27:11,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:27:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:14,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 5649 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:27:14,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:14,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 1507 trivial. 0 not checked. [2022-11-23 14:27:14,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:14,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:14,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561731987] [2022-11-23 14:27:14,300 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:27:14,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048433872] [2022-11-23 14:27:14,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048433872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:14,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:14,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:27:14,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252949385] [2022-11-23 14:27:14,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:14,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:27:14,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:14,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:27:14,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:27:14,303 INFO L87 Difference]: Start difference. First operand 28128 states and 40230 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2022-11-23 14:27:16,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:20,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:22,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:26,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:29,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:30,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:31,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:31,252 INFO L93 Difference]: Finished difference Result 56259 states and 80545 transitions. [2022-11-23 14:27:31,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:27:31,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 451 [2022-11-23 14:27:31,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:31,372 INFO L225 Difference]: With dead ends: 56259 [2022-11-23 14:27:31,373 INFO L226 Difference]: Without dead ends: 28192 [2022-11-23 14:27:31,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:27:31,461 INFO L413 NwaCegarLoop]: 3316 mSDtfsCounter, 1 mSDsluCounter, 3312 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6628 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:31,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6628 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 550 Invalid, 2 Unknown, 0 Unchecked, 15.8s Time] [2022-11-23 14:27:31,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28192 states. [2022-11-23 14:27:32,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28192 to 28160. [2022-11-23 14:27:32,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28160 states, 18150 states have (on average 1.3383471074380164) internal successors, (24291), 18838 states have internal predecessors, (24291), 7833 states have call successors, (7833), 2119 states have call predecessors, (7833), 2176 states have return successors, (8138), 7744 states have call predecessors, (8138), 7832 states have call successors, (8138) [2022-11-23 14:27:32,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28160 states to 28160 states and 40262 transitions. [2022-11-23 14:27:32,734 INFO L78 Accepts]: Start accepts. Automaton has 28160 states and 40262 transitions. Word has length 451 [2022-11-23 14:27:32,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:32,735 INFO L495 AbstractCegarLoop]: Abstraction has 28160 states and 40262 transitions. [2022-11-23 14:27:32,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2022-11-23 14:27:32,736 INFO L276 IsEmpty]: Start isEmpty. Operand 28160 states and 40262 transitions. [2022-11-23 14:27:32,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2022-11-23 14:27:32,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:32,795 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 8, 8, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:27:32,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:33,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:27:33,014 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:27:33,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:33,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1253011819, now seen corresponding path program 1 times [2022-11-23 14:27:33,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:33,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332105442] [2022-11-23 14:27:33,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:33,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:33,271 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:27:33,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [233075826] [2022-11-23 14:27:33,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:33,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:27:33,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:27:33,273 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:27:33,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8694f5-c5f8-4769-97f9-22a213bf3f07/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:27:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:35,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 5980 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:27:35,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:35,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1667 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 1515 trivial. 0 not checked. [2022-11-23 14:27:35,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:27:36,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1667 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 1652 trivial. 0 not checked. [2022-11-23 14:27:36,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:36,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332105442] [2022-11-23 14:27:36,840 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:27:36,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233075826] [2022-11-23 14:27:36,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233075826] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:27:36,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [559025229] [2022-11-23 14:27:36,895 INFO L159 IcfgInterpreter]: Started Sifa with 304 locations of interest [2022-11-23 14:27:36,895 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:27:36,903 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:27:36,910 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:27:36,911 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:27:45,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 1260 treesize of output 1009 [2022-11-23 14:27:47,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:27:48,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:27:49,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:27:49,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:27:49,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:27:49,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:27:49,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:27:51,295 INFO L217 Elim1Store]: Index analysis took 4451 ms