./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9 --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 3d776a54fbebbd358d59ab0126298feae1e40360b6fb5e6158cd54ba5ef877f7 --- 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-6b4ec56 [2022-11-20 21:29:14,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:29:14,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:29:15,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:29:15,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:29:15,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:29:15,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:29:15,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:29:15,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:29:15,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:29:15,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:29:15,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:29:15,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:29:15,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:29:15,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:29:15,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:29:15,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:29:15,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:29:15,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:29:15,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:29:15,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:29:15,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:29:15,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:29:15,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:29:15,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:29:15,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:29:15,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:29:15,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:29:15,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:29:15,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:29:15,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:29:15,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:29:15,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:29:15,086 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:29:15,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:29:15,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:29:15,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:29:15,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:29:15,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:29:15,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:29:15,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:29:15,094 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 21:29:15,134 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:29:15,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:29:15,135 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:29:15,135 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:29:15,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:29:15,136 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:29:15,137 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:29:15,137 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:29:15,137 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:29:15,137 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 21:29:15,138 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:29:15,139 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:29:15,139 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 21:29:15,139 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 21:29:15,139 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:29:15,140 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 21:29:15,140 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 21:29:15,140 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 21:29:15,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:29:15,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 21:29:15,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:29:15,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:29:15,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:29:15,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:29:15,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:29:15,142 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:29:15,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:29:15,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:29:15,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:29:15,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:29:15,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:29:15,144 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 21:29:15,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:29:15,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:29:15,145 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 21:29:15,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 21:29:15,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:29:15,145 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:29:15,146 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_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d776a54fbebbd358d59ab0126298feae1e40360b6fb5e6158cd54ba5ef877f7 [2022-11-20 21:29:15,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:29:15,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:29:15,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:29:15,472 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:29:15,473 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:29:15,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2022-11-20 21:29:18,581 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:29:19,302 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:29:19,302 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2022-11-20 21:29:19,352 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9/data/401f0b893/41b834ac7c6f49b58f9c7fecf40bb1bf/FLAGd85baec45 [2022-11-20 21:29:19,367 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9/data/401f0b893/41b834ac7c6f49b58f9c7fecf40bb1bf [2022-11-20 21:29:19,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:29:19,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:29:19,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:29:19,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:29:19,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:29:19,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:29:19" (1/1) ... [2022-11-20 21:29:19,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e3443b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:19, skipping insertion in model container [2022-11-20 21:29:19,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:29:19" (1/1) ... [2022-11-20 21:29:19,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:29:19,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:29:22,934 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_b6d27170-3e77-4b56-96ca-802a32b56f38/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2022-11-20 21:29:23,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:29:23,174 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:29:23,717 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_b6d27170-3e77-4b56-96ca-802a32b56f38/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2022-11-20 21:29:23,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:29:23,934 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:29:23,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:23 WrapperNode [2022-11-20 21:29:23,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:29:23,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:29:23,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:29:23,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:29:23,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:23" (1/1) ... [2022-11-20 21:29:24,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:23" (1/1) ... [2022-11-20 21:29:24,301 INFO L138 Inliner]: procedures = 445, calls = 3488, calls flagged for inlining = 226, calls inlined = 196, statements flattened = 7816 [2022-11-20 21:29:24,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:29:24,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:29:24,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:29:24,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:29:24,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:23" (1/1) ... [2022-11-20 21:29:24,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:23" (1/1) ... [2022-11-20 21:29:24,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:23" (1/1) ... [2022-11-20 21:29:24,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:23" (1/1) ... [2022-11-20 21:29:24,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:23" (1/1) ... [2022-11-20 21:29:24,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:23" (1/1) ... [2022-11-20 21:29:24,678 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:23" (1/1) ... [2022-11-20 21:29:24,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:23" (1/1) ... [2022-11-20 21:29:24,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:29:24,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:29:24,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:29:24,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:29:24,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:23" (1/1) ... [2022-11-20 21:29:24,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:29:24,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:29:24,792 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:29:24,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:29:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2022-11-20 21:29:24,840 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2022-11-20 21:29:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2022-11-20 21:29:24,840 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2022-11-20 21:29:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-20 21:29:24,841 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-20 21:29:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 21:29:24,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 21:29:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2022-11-20 21:29:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_release_fabric_acl [2022-11-20 21:29:24,841 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_release_fabric_acl [2022-11-20 21:29:24,842 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-20 21:29:24,842 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-20 21:29:24,842 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_access_ok [2022-11-20 21:29:24,842 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_access_ok [2022-11-20 21:29:24,842 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_close_session [2022-11-20 21:29:24,842 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_close_session [2022-11-20 21:29:24,843 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2022-11-20 21:29:24,843 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2022-11-20 21:29:24,843 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2022-11-20 21:29:24,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 21:29:24,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tcm_vhost_mutex [2022-11-20 21:29:24,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tcm_vhost_mutex [2022-11-20 21:29:24,844 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-20 21:29:24,844 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-20 21:29:24,845 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-20 21:29:24,845 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-20 21:29:24,845 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2022-11-20 21:29:24,846 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2022-11-20 21:29:24,846 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2022-11-20 21:29:24,846 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2022-11-20 21:29:24,846 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_tpg [2022-11-20 21:29:24,847 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_tpg [2022-11-20 21:29:24,847 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-20 21:29:24,847 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-20 21:29:24,847 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-20 21:29:24,847 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-20 21:29:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_open [2022-11-20 21:29:24,848 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_open [2022-11-20 21:29:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-20 21:29:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-20 21:29:24,848 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-20 21:29:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2022-11-20 21:29:24,849 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2022-11-20 21:29:24,849 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2022-11-20 21:29:24,849 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2022-11-20 21:29:24,849 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-20 21:29:24,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-20 21:29:24,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 21:29:24,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 21:29:24,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 21:29:24,851 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 21:29:24,851 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2022-11-20 21:29:24,851 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2022-11-20 21:29:24,851 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2022-11-20 21:29:24,851 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-20 21:29:24,851 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-20 21:29:24,851 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_complete_cmd [2022-11-20 21:29:24,852 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_complete_cmd [2022-11-20 21:29:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-20 21:29:24,852 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-20 21:29:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2022-11-20 21:29:24,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2022-11-20 21:29:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2022-11-20 21:29:24,853 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2022-11-20 21:29:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2022-11-20 21:29:24,853 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2022-11-20 21:29:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-20 21:29:24,854 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-20 21:29:24,854 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_pr_transport_id [2022-11-20 21:29:24,854 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_pr_transport_id [2022-11-20 21:29:24,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tv_tpg_mutex [2022-11-20 21:29:24,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tv_tpg_mutex [2022-11-20 21:29:24,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 21:29:24,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 21:29:24,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 21:29:24,856 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 21:29:24,856 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2022-11-20 21:29:24,856 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2022-11-20 21:29:24,857 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 21:29:24,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 21:29:24,857 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-20 21:29:24,858 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-20 21:29:24,858 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2022-11-20 21:29:24,858 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2022-11-20 21:29:24,858 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2022-11-20 21:29:24,858 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2022-11-20 21:29:24,859 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-20 21:29:24,859 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-20 21:29:24,859 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2022-11-20 21:29:24,859 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2022-11-20 21:29:24,860 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user [2022-11-20 21:29:24,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user [2022-11-20 21:29:24,860 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2022-11-20 21:29:24,861 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2022-11-20 21:29:24,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2022-11-20 21:29:24,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2022-11-20 21:29:24,861 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2022-11-20 21:29:24,861 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2022-11-20 21:29:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-20 21:29:24,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-20 21:29:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_alloc_fabric_acl [2022-11-20 21:29:24,862 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_alloc_fabric_acl [2022-11-20 21:29:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_tcm_vhost_mutex [2022-11-20 21:29:24,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_tcm_vhost_mutex [2022-11-20 21:29:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_ioctl [2022-11-20 21:29:24,863 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_ioctl [2022-11-20 21:29:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-20 21:29:24,863 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-20 21:29:24,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:29:24,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:29:24,867 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_tport [2022-11-20 21:29:24,868 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_tport [2022-11-20 21:29:24,868 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-20 21:29:24,868 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-20 21:29:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-20 21:29:24,869 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-20 21:29:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2022-11-20 21:29:24,871 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2022-11-20 21:29:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 21:29:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2022-11-20 21:29:24,877 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2022-11-20 21:29:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 21:29:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2022-11-20 21:29:24,878 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2022-11-20 21:29:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-20 21:29:24,878 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-20 21:29:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2022-11-20 21:29:24,878 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2022-11-20 21:29:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-20 21:29:24,878 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-20 21:29:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2022-11-20 21:29:24,879 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2022-11-20 21:29:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 21:29:24,879 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 21:29:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 21:29:24,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 21:29:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-20 21:29:24,880 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-20 21:29:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2022-11-20 21:29:24,880 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2022-11-20 21:29:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-20 21:29:24,880 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-20 21:29:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-20 21:29:24,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-20 21:29:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2022-11-20 21:29:24,881 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2022-11-20 21:29:24,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 21:29:24,881 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-20 21:29:24,881 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-20 21:29:24,881 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2022-11-20 21:29:24,881 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2022-11-20 21:29:24,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 21:29:24,882 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2022-11-20 21:29:24,882 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2022-11-20 21:29:24,882 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_release_cmd [2022-11-20 21:29:24,882 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_release_cmd [2022-11-20 21:29:24,882 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_set_default_node_attrs [2022-11-20 21:29:24,882 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_set_default_node_attrs [2022-11-20 21:29:24,882 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_nexus [2022-11-20 21:29:24,883 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_nexus [2022-11-20 21:29:24,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 21:29:24,883 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2022-11-20 21:29:24,883 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2022-11-20 21:29:24,884 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-20 21:29:24,884 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-20 21:29:24,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_tv_tpg_mutex [2022-11-20 21:29:24,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_tv_tpg_mutex [2022-11-20 21:29:24,884 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-20 21:29:24,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-20 21:29:24,884 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-20 21:29:24,885 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-20 21:29:24,885 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_fabric_proto_ident [2022-11-20 21:29:24,885 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_fabric_proto_ident [2022-11-20 21:29:24,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-20 21:29:24,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-20 21:29:24,885 INFO L130 BoogieDeclarations]: Found specification of procedure get_user_pages_fast [2022-11-20 21:29:24,885 INFO L138 BoogieDeclarations]: Found implementation of procedure get_user_pages_fast [2022-11-20 21:29:24,886 INFO L130 BoogieDeclarations]: Found specification of procedure transport_generic_free_cmd [2022-11-20 21:29:24,886 INFO L138 BoogieDeclarations]: Found implementation of procedure transport_generic_free_cmd [2022-11-20 21:29:24,886 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_deregister [2022-11-20 21:29:24,886 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_deregister [2022-11-20 21:29:24,886 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-20 21:29:24,886 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-20 21:29:24,886 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2022-11-20 21:29:24,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2022-11-20 21:29:24,887 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_command_size [2022-11-20 21:29:24,887 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_command_size [2022-11-20 21:29:24,887 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_dump_proto_id [2022-11-20 21:29:24,887 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_dump_proto_id [2022-11-20 21:29:24,887 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2022-11-20 21:29:24,887 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2022-11-20 21:29:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 21:29:24,888 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 21:29:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 21:29:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2022-11-20 21:29:24,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2022-11-20 21:29:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_clear_endpoint [2022-11-20 21:29:24,888 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_clear_endpoint [2022-11-20 21:29:24,889 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2022-11-20 21:29:24,889 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2022-11-20 21:29:24,889 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-20 21:29:24,889 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-20 21:29:24,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 21:29:24,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 21:29:24,889 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_flush_vq [2022-11-20 21:29:24,889 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_flush_vq [2022-11-20 21:29:24,890 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2022-11-20 21:29:24,890 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2022-11-20 21:29:24,890 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2022-11-20 21:29:24,890 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2022-11-20 21:29:24,890 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-20 21:29:24,890 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-20 21:29:24,890 INFO L130 BoogieDeclarations]: Found specification of procedure sas_parse_pr_out_transport_id [2022-11-20 21:29:24,891 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_parse_pr_out_transport_id [2022-11-20 21:29:24,891 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2022-11-20 21:29:24,891 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2022-11-20 21:29:24,891 INFO L130 BoogieDeclarations]: Found specification of procedure utsname [2022-11-20 21:29:24,891 INFO L138 BoogieDeclarations]: Found implementation of procedure utsname [2022-11-20 21:29:24,891 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2022-11-20 21:29:24,891 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2022-11-20 21:29:24,892 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-20 21:29:24,892 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-20 21:29:24,892 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2022-11-20 21:29:24,892 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2022-11-20 21:29:24,892 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-11-20 21:29:24,892 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-11-20 21:29:24,892 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used [2022-11-20 21:29:24,893 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used [2022-11-20 21:29:24,893 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-20 21:29:24,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-20 21:29:24,893 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-20 21:29:24,893 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-20 21:29:24,893 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-11-20 21:29:24,893 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-11-20 21:29:24,894 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_nodeacl [2022-11-20 21:29:24,894 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_nodeacl [2022-11-20 21:29:24,895 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2022-11-20 21:29:24,898 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2022-11-20 21:29:24,898 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_release [2022-11-20 21:29:24,899 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_release [2022-11-20 21:29:24,899 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2022-11-20 21:29:24,899 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2022-11-20 21:29:24,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 21:29:24,899 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_pr_transport_id_len [2022-11-20 21:29:24,899 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_pr_transport_id_len [2022-11-20 21:29:24,899 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_port_link [2022-11-20 21:29:24,900 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_port_link [2022-11-20 21:29:26,050 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:29:26,053 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:29:32,843 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7455: assume #t~switch210;#res := ~ret~1; [2022-11-20 21:29:32,843 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7455: assume !#t~switch210;#t~switch210 := #t~switch210 || 4 == ~size; [2022-11-20 21:29:32,843 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7488: assume 0 != ~tmp___1~4;#res := ~ret~1; [2022-11-20 21:29:32,843 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7488: assume !(0 != ~tmp___1~4);#res := ~ret~1; [2022-11-20 21:29:32,844 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7449: havoc #t~switch210; [2022-11-20 21:29:32,844 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7474: SUMMARY for call #t~ret211 := ldv__builtin_expect((if 0 != ~ret~1 then 1 else 0), 0); srcloc: null [2022-11-20 21:29:32,844 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7470: assume #t~switch210; [2022-11-20 21:29:32,844 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7470: assume !#t~switch210;#t~switch210 := #t~switch210 || 16 == ~size; [2022-11-20 21:29:32,844 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7474-1: assume -9223372036854775808 <= #t~ret211 && #t~ret211 <= 9223372036854775807;~tmp___0~9 := #t~ret211;havoc #t~ret211; [2022-11-20 21:29:32,844 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume #t~switch210;#res := ~ret~1; [2022-11-20 21:29:32,844 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7497-1: ~tmp___2~3 := #t~ret213;havoc #t~ret213;#res := (if ~tmp___2~3 % 18446744073709551616 % 4294967296 <= 2147483647 then ~tmp___2~3 % 18446744073709551616 % 4294967296 else ~tmp___2~3 % 18446744073709551616 % 4294967296 - 4294967296); [2022-11-20 21:29:32,844 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7497: SUMMARY for call #t~ret213 := copy_user_generic(~dst.base, ~dst.offset, ~src.base, ~src.offset, ~size); srcloc: null [2022-11-20 21:29:32,844 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !#t~switch210;#t~switch210 := #t~switch210 || 2 == ~size; [2022-11-20 21:29:32,845 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7460: assume #t~switch210;#res := ~ret~1; [2022-11-20 21:29:32,845 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7460: assume !#t~switch210;#t~switch210 := #t~switch210 || 8 == ~size; [2022-11-20 21:29:32,845 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7487-1: assume -9223372036854775808 <= #t~ret212 && #t~ret212 <= 9223372036854775807;~tmp___1~4 := #t~ret212;havoc #t~ret212; [2022-11-20 21:29:32,845 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7487: SUMMARY for call #t~ret212 := ldv__builtin_expect((if 0 != ~ret~1 then 1 else 0), 0); srcloc: null [2022-11-20 21:29:32,845 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7483: assume #t~switch210; [2022-11-20 21:29:32,845 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7483: assume !#t~switch210;#t~switch210 := true; [2022-11-20 21:29:32,845 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7475: assume 0 != ~tmp___0~9;#res := ~ret~1; [2022-11-20 21:29:32,845 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7475: assume !(0 != ~tmp___0~9);#res := ~ret~1; [2022-11-20 21:29:32,845 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7496: assume #t~switch210; [2022-11-20 21:29:32,845 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7496: assume !#t~switch210; [2022-11-20 21:29:32,845 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7465: assume #t~switch210;#res := ~ret~1; [2022-11-20 21:29:32,846 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7465: assume !#t~switch210;#t~switch210 := #t~switch210 || 10 == ~size; [2022-11-20 21:29:38,668 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:29:40,479 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:29:40,479 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 21:29:40,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:29:40 BoogieIcfgContainer [2022-11-20 21:29:40,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:29:40,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:29:40,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:29:40,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:29:40,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:29:19" (1/3) ... [2022-11-20 21:29:40,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34dd03e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:29:40, skipping insertion in model container [2022-11-20 21:29:40,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:23" (2/3) ... [2022-11-20 21:29:40,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34dd03e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:29:40, skipping insertion in model container [2022-11-20 21:29:40,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:29:40" (3/3) ... [2022-11-20 21:29:40,498 INFO L112 eAbstractionObserver]: Analyzing ICFG main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2022-11-20 21:29:40,517 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:29:40,518 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 21:29:40,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:29:40,633 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;@206048, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:29:40,633 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 21:29:40,646 INFO L276 IsEmpty]: Start isEmpty. Operand has 1965 states, 1207 states have (on average 1.3413421706710853) internal successors, (1619), 1257 states have internal predecessors, (1619), 642 states have call successors, (642), 114 states have call predecessors, (642), 114 states have return successors, (642), 630 states have call predecessors, (642), 642 states have call successors, (642) [2022-11-20 21:29:40,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 21:29:40,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:29:40,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:29:40,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:29:40,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:29:40,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1132120312, now seen corresponding path program 1 times [2022-11-20 21:29:40,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:29:40,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114779782] [2022-11-20 21:29:40,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:29:40,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:29:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:29:41,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:29:41,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:29:41,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114779782] [2022-11-20 21:29:41,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114779782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:29:41,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:29:41,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:29:41,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321336374] [2022-11-20 21:29:41,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:29:41,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:29:41,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:29:41,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:29:41,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:29:41,386 INFO L87 Difference]: Start difference. First operand has 1965 states, 1207 states have (on average 1.3413421706710853) internal successors, (1619), 1257 states have internal predecessors, (1619), 642 states have call successors, (642), 114 states have call predecessors, (642), 114 states have return successors, (642), 630 states have call predecessors, (642), 642 states have call successors, (642) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 21:29:43,730 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 [] [2022-11-20 21:29:45,771 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 [] [2022-11-20 21:29:48,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:29:48,015 INFO L93 Difference]: Finished difference Result 5825 states and 8736 transitions. [2022-11-20 21:29:48,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:29:48,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-20 21:29:48,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:29:48,059 INFO L225 Difference]: With dead ends: 5825 [2022-11-20 21:29:48,059 INFO L226 Difference]: Without dead ends: 3871 [2022-11-20 21:29:48,075 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 [2022-11-20 21:29:48,078 INFO L413 NwaCegarLoop]: 3281 mSDtfsCounter, 2871 mSDsluCounter, 2569 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2873 SdHoareTripleChecker+Valid, 5850 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:29:48,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2873 Valid, 5850 Invalid, 555 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 552 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2022-11-20 21:29:48,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3871 states. [2022-11-20 21:29:48,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3871 to 3862. [2022-11-20 21:29:48,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3862 states, 2372 states have (on average 1.3338954468802697) internal successors, (3164), 2456 states have internal predecessors, (3164), 1264 states have call successors, (1264), 226 states have call predecessors, (1264), 225 states have return successors, (1252), 1228 states have call predecessors, (1252), 1252 states have call successors, (1252) [2022-11-20 21:29:48,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3862 states to 3862 states and 5680 transitions. [2022-11-20 21:29:48,581 INFO L78 Accepts]: Start accepts. Automaton has 3862 states and 5680 transitions. Word has length 13 [2022-11-20 21:29:48,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:29:48,582 INFO L495 AbstractCegarLoop]: Abstraction has 3862 states and 5680 transitions. [2022-11-20 21:29:48,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 21:29:48,582 INFO L276 IsEmpty]: Start isEmpty. Operand 3862 states and 5680 transitions. [2022-11-20 21:29:48,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 21:29:48,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:29:48,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:29:48,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 21:29:48,584 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:29:48,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:29:48,585 INFO L85 PathProgramCache]: Analyzing trace with hash -737141477, now seen corresponding path program 1 times [2022-11-20 21:29:48,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:29:48,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105041934] [2022-11-20 21:29:48,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:29:48,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:29:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:29:48,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:29:48,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:29:48,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105041934] [2022-11-20 21:29:48,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105041934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:29:48,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:29:48,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:29:48,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385706322] [2022-11-20 21:29:48,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:29:48,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:29:48,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:29:48,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:29:48,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:29:48,888 INFO L87 Difference]: Start difference. First operand 3862 states and 5680 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 21:29:51,131 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 [] [2022-11-20 21:29:53,160 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 [] [2022-11-20 21:29:55,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:29:55,319 INFO L93 Difference]: Finished difference Result 3875 states and 5692 transitions. [2022-11-20 21:29:55,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:29:55,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-11-20 21:29:55,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:29:55,344 INFO L225 Difference]: With dead ends: 3875 [2022-11-20 21:29:55,345 INFO L226 Difference]: Without dead ends: 3872 [2022-11-20 21:29:55,348 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 [2022-11-20 21:29:55,349 INFO L413 NwaCegarLoop]: 3251 mSDtfsCounter, 2848 mSDsluCounter, 2554 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2850 SdHoareTripleChecker+Valid, 5805 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:29:55,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2850 Valid, 5805 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 552 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2022-11-20 21:29:55,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2022-11-20 21:29:55,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 3863. [2022-11-20 21:29:55,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3863 states, 2373 states have (on average 1.3337547408343868) internal successors, (3165), 2457 states have internal predecessors, (3165), 1264 states have call successors, (1264), 226 states have call predecessors, (1264), 225 states have return successors, (1252), 1228 states have call predecessors, (1252), 1252 states have call successors, (1252) [2022-11-20 21:29:55,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3863 states to 3863 states and 5681 transitions. [2022-11-20 21:29:55,687 INFO L78 Accepts]: Start accepts. Automaton has 3863 states and 5681 transitions. Word has length 14 [2022-11-20 21:29:55,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:29:55,688 INFO L495 AbstractCegarLoop]: Abstraction has 3863 states and 5681 transitions. [2022-11-20 21:29:55,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 21:29:55,688 INFO L276 IsEmpty]: Start isEmpty. Operand 3863 states and 5681 transitions. [2022-11-20 21:29:55,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 21:29:55,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:29:55,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:29:55,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 21:29:55,690 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:29:55,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:29:55,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1377694613, now seen corresponding path program 1 times [2022-11-20 21:29:55,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:29:55,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120258818] [2022-11-20 21:29:55,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:29:55,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:29:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:29:55,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:29:55,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:29:55,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120258818] [2022-11-20 21:29:55,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120258818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:29:55,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:29:55,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:29:55,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574193718] [2022-11-20 21:29:55,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:29:55,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:29:55,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:29:55,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:29:55,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:29:55,927 INFO L87 Difference]: Start difference. First operand 3863 states and 5681 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 21:29:58,167 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 [] [2022-11-20 21:30:00,192 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 [] [2022-11-20 21:30:02,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:30:02,189 INFO L93 Difference]: Finished difference Result 3876 states and 5693 transitions. [2022-11-20 21:30:02,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:30:02,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-20 21:30:02,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:30:02,210 INFO L225 Difference]: With dead ends: 3876 [2022-11-20 21:30:02,210 INFO L226 Difference]: Without dead ends: 3873 [2022-11-20 21:30:02,214 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 [2022-11-20 21:30:02,215 INFO L413 NwaCegarLoop]: 3262 mSDtfsCounter, 2845 mSDsluCounter, 2557 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2847 SdHoareTripleChecker+Valid, 5819 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:30:02,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2847 Valid, 5819 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 551 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2022-11-20 21:30:02,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3873 states. [2022-11-20 21:30:02,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3873 to 3864. [2022-11-20 21:30:02,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3864 states, 2374 states have (on average 1.3336141533277168) internal successors, (3166), 2458 states have internal predecessors, (3166), 1264 states have call successors, (1264), 226 states have call predecessors, (1264), 225 states have return successors, (1252), 1228 states have call predecessors, (1252), 1252 states have call successors, (1252) [2022-11-20 21:30:02,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3864 states to 3864 states and 5682 transitions. [2022-11-20 21:30:02,516 INFO L78 Accepts]: Start accepts. Automaton has 3864 states and 5682 transitions. Word has length 15 [2022-11-20 21:30:02,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:30:02,517 INFO L495 AbstractCegarLoop]: Abstraction has 3864 states and 5682 transitions. [2022-11-20 21:30:02,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 21:30:02,517 INFO L276 IsEmpty]: Start isEmpty. Operand 3864 states and 5682 transitions. [2022-11-20 21:30:02,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 21:30:02,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:30:02,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:30:02,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 21:30:02,519 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:30:02,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:30:02,521 INFO L85 PathProgramCache]: Analyzing trace with hash 239999518, now seen corresponding path program 1 times [2022-11-20 21:30:02,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:30:02,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727559279] [2022-11-20 21:30:02,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:30:02,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:30:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:30:02,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:30:02,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:30:02,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727559279] [2022-11-20 21:30:02,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727559279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:30:02,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:30:02,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:30:02,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042145462] [2022-11-20 21:30:02,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:30:02,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:30:02,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:30:02,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:30:02,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:30:02,860 INFO L87 Difference]: Start difference. First operand 3864 states and 5682 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 21:30:05,161 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 [] [2022-11-20 21:30:07,214 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 [] [2022-11-20 21:30:09,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:30:09,388 INFO L93 Difference]: Finished difference Result 9378 states and 13634 transitions. [2022-11-20 21:30:09,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:30:09,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-20 21:30:09,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:30:09,426 INFO L225 Difference]: With dead ends: 9378 [2022-11-20 21:30:09,427 INFO L226 Difference]: Without dead ends: 5553 [2022-11-20 21:30:09,447 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 [2022-11-20 21:30:09,449 INFO L413 NwaCegarLoop]: 2997 mSDtfsCounter, 1565 mSDsluCounter, 2438 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 5435 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:30:09,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1567 Valid, 5435 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 560 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2022-11-20 21:30:09,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5553 states. [2022-11-20 21:30:09,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5553 to 5525. [2022-11-20 21:30:09,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5525 states, 3353 states have (on average 1.3197136892335222) internal successors, (4425), 3495 states have internal predecessors, (4425), 1771 states have call successors, (1771), 404 states have call predecessors, (1771), 400 states have return successors, (1770), 1699 states have call predecessors, (1770), 1755 states have call successors, (1770) [2022-11-20 21:30:09,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5525 states to 5525 states and 7966 transitions. [2022-11-20 21:30:09,848 INFO L78 Accepts]: Start accepts. Automaton has 5525 states and 7966 transitions. Word has length 16 [2022-11-20 21:30:09,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:30:09,848 INFO L495 AbstractCegarLoop]: Abstraction has 5525 states and 7966 transitions. [2022-11-20 21:30:09,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 21:30:09,849 INFO L276 IsEmpty]: Start isEmpty. Operand 5525 states and 7966 transitions. [2022-11-20 21:30:09,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 21:30:09,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:30:09,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:30:09,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 21:30:09,857 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:30:09,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:30:09,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1151085106, now seen corresponding path program 1 times [2022-11-20 21:30:09,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:30:09,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360971562] [2022-11-20 21:30:09,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:30:09,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:30:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:30:10,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:30:10,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:30:10,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360971562] [2022-11-20 21:30:10,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360971562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:30:10,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:30:10,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:30:10,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753021331] [2022-11-20 21:30:10,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:30:10,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:30:10,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:30:10,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:30:10,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:30:10,054 INFO L87 Difference]: Start difference. First operand 5525 states and 7966 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 21:30:12,371 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 [] [2022-11-20 21:30:14,404 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 [] [2022-11-20 21:30:16,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:30:16,466 INFO L93 Difference]: Finished difference Result 8296 states and 11968 transitions. [2022-11-20 21:30:16,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:30:16,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-20 21:30:16,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:30:16,519 INFO L225 Difference]: With dead ends: 8296 [2022-11-20 21:30:16,519 INFO L226 Difference]: Without dead ends: 8292 [2022-11-20 21:30:16,525 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 [2022-11-20 21:30:16,526 INFO L413 NwaCegarLoop]: 3189 mSDtfsCounter, 2792 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2794 SdHoareTripleChecker+Valid, 5650 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:30:16,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2794 Valid, 5650 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 550 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2022-11-20 21:30:16,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8292 states. [2022-11-20 21:30:16,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8292 to 8264. [2022-11-20 21:30:17,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8264 states, 5036 states have (on average 1.3230738681493248) internal successors, (6663), 5250 states have internal predecessors, (6663), 2623 states have call successors, (2623), 613 states have call predecessors, (2623), 604 states have return successors, (2647), 2510 states have call predecessors, (2647), 2607 states have call successors, (2647) [2022-11-20 21:30:17,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8264 states to 8264 states and 11933 transitions. [2022-11-20 21:30:17,045 INFO L78 Accepts]: Start accepts. Automaton has 8264 states and 11933 transitions. Word has length 17 [2022-11-20 21:30:17,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:30:17,045 INFO L495 AbstractCegarLoop]: Abstraction has 8264 states and 11933 transitions. [2022-11-20 21:30:17,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 21:30:17,046 INFO L276 IsEmpty]: Start isEmpty. Operand 8264 states and 11933 transitions. [2022-11-20 21:30:17,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 21:30:17,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:30:17,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:30:17,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 21:30:17,047 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:30:17,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:30:17,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1325030623, now seen corresponding path program 1 times [2022-11-20 21:30:17,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:30:17,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628948316] [2022-11-20 21:30:17,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:30:17,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:30:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:30:17,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:30:17,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:30:17,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628948316] [2022-11-20 21:30:17,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628948316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:30:17,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:30:17,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:30:17,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622340331] [2022-11-20 21:30:17,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:30:17,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:30:17,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:30:17,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:30:17,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:30:17,335 INFO L87 Difference]: Start difference. First operand 8264 states and 11933 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 21:30:19,608 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 [] [2022-11-20 21:30:21,650 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 [] [2022-11-20 21:30:23,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:30:23,808 INFO L93 Difference]: Finished difference Result 13701 states and 19836 transitions. [2022-11-20 21:30:23,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:30:23,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-20 21:30:23,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:30:23,887 INFO L225 Difference]: With dead ends: 13701 [2022-11-20 21:30:23,887 INFO L226 Difference]: Without dead ends: 13680 [2022-11-20 21:30:23,899 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 [2022-11-20 21:30:23,900 INFO L413 NwaCegarLoop]: 3198 mSDtfsCounter, 2785 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2787 SdHoareTripleChecker+Valid, 5672 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:30:23,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2787 Valid, 5672 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 548 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2022-11-20 21:30:23,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13680 states. [2022-11-20 21:30:24,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13680 to 13651. [2022-11-20 21:30:24,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13651 states, 8345 states have (on average 1.3260635110844816) internal successors, (11066), 8711 states have internal predecessors, (11066), 4313 states have call successors, (4313), 1019 states have call predecessors, (4313), 992 states have return successors, (4391), 4102 states have call predecessors, (4391), 4297 states have call successors, (4391) [2022-11-20 21:30:24,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13651 states to 13651 states and 19770 transitions. [2022-11-20 21:30:24,835 INFO L78 Accepts]: Start accepts. Automaton has 13651 states and 19770 transitions. Word has length 18 [2022-11-20 21:30:24,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:30:24,836 INFO L495 AbstractCegarLoop]: Abstraction has 13651 states and 19770 transitions. [2022-11-20 21:30:24,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 21:30:24,836 INFO L276 IsEmpty]: Start isEmpty. Operand 13651 states and 19770 transitions. [2022-11-20 21:30:24,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-20 21:30:24,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:30:24,841 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 21:30:24,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 21:30:24,841 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:30:24,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:30:24,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1394210988, now seen corresponding path program 1 times [2022-11-20 21:30:24,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:30:24,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966065545] [2022-11-20 21:30:24,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:30:24,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:30:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:30:25,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 21:30:25,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:30:25,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966065545] [2022-11-20 21:30:25,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966065545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:30:25,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:30:25,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:30:25,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128695808] [2022-11-20 21:30:25,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:30:25,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:30:25,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:30:25,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:30:25,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:30:25,432 INFO L87 Difference]: Start difference. First operand 13651 states and 19770 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 21:30:27,838 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 [] [2022-11-20 21:30:29,890 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 [] [2022-11-20 21:30:33,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:30:33,090 INFO L93 Difference]: Finished difference Result 28818 states and 42787 transitions. [2022-11-20 21:30:33,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:30:33,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2022-11-20 21:30:33,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:30:33,184 INFO L225 Difference]: With dead ends: 28818 [2022-11-20 21:30:33,185 INFO L226 Difference]: Without dead ends: 17795 [2022-11-20 21:30:33,353 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 [2022-11-20 21:30:33,354 INFO L413 NwaCegarLoop]: 3078 mSDtfsCounter, 492 mSDsluCounter, 5495 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 199 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 8573 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-20 21:30:33,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 8573 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 874 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2022-11-20 21:30:33,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17795 states. [2022-11-20 21:30:34,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17795 to 13653. [2022-11-20 21:30:34,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13653 states, 8347 states have (on average 1.3259853839702886) internal successors, (11068), 8713 states have internal predecessors, (11068), 4313 states have call successors, (4313), 1019 states have call predecessors, (4313), 992 states have return successors, (4391), 4102 states have call predecessors, (4391), 4297 states have call successors, (4391) [2022-11-20 21:30:34,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13653 states to 13653 states and 19772 transitions. [2022-11-20 21:30:34,456 INFO L78 Accepts]: Start accepts. Automaton has 13653 states and 19772 transitions. Word has length 35 [2022-11-20 21:30:34,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:30:34,457 INFO L495 AbstractCegarLoop]: Abstraction has 13653 states and 19772 transitions. [2022-11-20 21:30:34,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 21:30:34,457 INFO L276 IsEmpty]: Start isEmpty. Operand 13653 states and 19772 transitions. [2022-11-20 21:30:34,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-20 21:30:34,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:30:34,462 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:30:34,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 21:30:34,463 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:30:34,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:30:34,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1475383019, now seen corresponding path program 1 times [2022-11-20 21:30:34,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:30:34,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242408569] [2022-11-20 21:30:34,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:30:34,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:30:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:30:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 21:30:34,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:30:34,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242408569] [2022-11-20 21:30:34,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242408569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:30:34,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:30:34,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:30:34,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40012983] [2022-11-20 21:30:34,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:30:34,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:30:34,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:30:34,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:30:34,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:30:34,997 INFO L87 Difference]: Start difference. First operand 13653 states and 19772 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 21:30:37,345 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 [] [2022-11-20 21:30:39,391 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 [] [2022-11-20 21:30:41,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:30:41,949 INFO L93 Difference]: Finished difference Result 15868 states and 23493 transitions. [2022-11-20 21:30:41,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:30:41,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2022-11-20 21:30:41,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:30:42,123 INFO L225 Difference]: With dead ends: 15868 [2022-11-20 21:30:42,124 INFO L226 Difference]: Without dead ends: 15853 [2022-11-20 21:30:42,130 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 [2022-11-20 21:30:42,130 INFO L413 NwaCegarLoop]: 2972 mSDtfsCounter, 474 mSDsluCounter, 5119 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 193 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 8091 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:30:42,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 8091 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 828 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2022-11-20 21:30:42,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15853 states. [2022-11-20 21:30:43,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15853 to 13655. [2022-11-20 21:30:43,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13655 states, 8349 states have (on average 1.325907294286741) internal successors, (11070), 8715 states have internal predecessors, (11070), 4313 states have call successors, (4313), 1019 states have call predecessors, (4313), 992 states have return successors, (4391), 4102 states have call predecessors, (4391), 4297 states have call successors, (4391) [2022-11-20 21:30:43,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13655 states to 13655 states and 19774 transitions. [2022-11-20 21:30:43,113 INFO L78 Accepts]: Start accepts. Automaton has 13655 states and 19774 transitions. Word has length 39 [2022-11-20 21:30:43,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:30:43,114 INFO L495 AbstractCegarLoop]: Abstraction has 13655 states and 19774 transitions. [2022-11-20 21:30:43,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 21:30:43,114 INFO L276 IsEmpty]: Start isEmpty. Operand 13655 states and 19774 transitions. [2022-11-20 21:30:43,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 21:30:43,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:30:43,120 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 21:30:43,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 21:30:43,120 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:30:43,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:30:43,121 INFO L85 PathProgramCache]: Analyzing trace with hash 445578916, now seen corresponding path program 1 times [2022-11-20 21:30:43,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:30:43,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309979643] [2022-11-20 21:30:43,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:30:43,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:30:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:30:43,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 21:30:43,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:30:43,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309979643] [2022-11-20 21:30:43,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309979643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:30:43,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:30:43,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:30:43,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180515010] [2022-11-20 21:30:43,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:30:43,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:30:43,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:30:43,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:30:43,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:30:43,557 INFO L87 Difference]: Start difference. First operand 13655 states and 19774 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 21:30:45,801 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 [] [2022-11-20 21:30:47,836 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 [] [2022-11-20 21:30:49,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:30:49,052 INFO L93 Difference]: Finished difference Result 13657 states and 19775 transitions. [2022-11-20 21:30:49,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:30:49,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2022-11-20 21:30:49,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:30:49,118 INFO L225 Difference]: With dead ends: 13657 [2022-11-20 21:30:49,118 INFO L226 Difference]: Without dead ends: 13654 [2022-11-20 21:30:49,129 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 [2022-11-20 21:30:49,130 INFO L413 NwaCegarLoop]: 2591 mSDtfsCounter, 2841 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2843 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:30:49,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2843 Valid, 2591 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 275 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2022-11-20 21:30:49,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13654 states. [2022-11-20 21:30:50,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13654 to 13654. [2022-11-20 21:30:50,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13654 states, 8349 states have (on average 1.3249490957000838) internal successors, (11062), 8714 states have internal predecessors, (11062), 4312 states have call successors, (4312), 1019 states have call predecessors, (4312), 992 states have return successors, (4391), 4102 states have call predecessors, (4391), 4297 states have call successors, (4391) [2022-11-20 21:30:50,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13654 states to 13654 states and 19765 transitions. [2022-11-20 21:30:50,222 INFO L78 Accepts]: Start accepts. Automaton has 13654 states and 19765 transitions. Word has length 43 [2022-11-20 21:30:50,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:30:50,223 INFO L495 AbstractCegarLoop]: Abstraction has 13654 states and 19765 transitions. [2022-11-20 21:30:50,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 21:30:50,223 INFO L276 IsEmpty]: Start isEmpty. Operand 13654 states and 19765 transitions. [2022-11-20 21:30:50,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 21:30:50,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:30:50,226 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 21:30:50,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 21:30:50,226 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:30:50,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:30:50,227 INFO L85 PathProgramCache]: Analyzing trace with hash 926894335, now seen corresponding path program 1 times [2022-11-20 21:30:50,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:30:50,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795209302] [2022-11-20 21:30:50,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:30:50,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:30:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:30:50,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 21:30:50,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:30:50,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795209302] [2022-11-20 21:30:50,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795209302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:30:50,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:30:50,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:30:50,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882901646] [2022-11-20 21:30:50,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:30:50,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:30:50,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:30:50,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:30:50,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:30:50,513 INFO L87 Difference]: Start difference. First operand 13654 states and 19765 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 21:30:52,837 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 [] [2022-11-20 21:30:54,868 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 [] [2022-11-20 21:30:56,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:30:56,046 INFO L93 Difference]: Finished difference Result 13656 states and 19766 transitions. [2022-11-20 21:30:56,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:30:56,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 44 [2022-11-20 21:30:56,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:30:56,111 INFO L225 Difference]: With dead ends: 13656 [2022-11-20 21:30:56,112 INFO L226 Difference]: Without dead ends: 13653 [2022-11-20 21:30:56,122 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 [2022-11-20 21:30:56,123 INFO L413 NwaCegarLoop]: 2589 mSDtfsCounter, 2838 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2840 SdHoareTripleChecker+Valid, 2589 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-20 21:30:56,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2840 Valid, 2589 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 275 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2022-11-20 21:30:56,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13653 states. [2022-11-20 21:30:57,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13653 to 13653. [2022-11-20 21:30:57,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13653 states, 8349 states have (on average 1.3239908971134267) internal successors, (11054), 8713 states have internal predecessors, (11054), 4311 states have call successors, (4311), 1019 states have call predecessors, (4311), 992 states have return successors, (4391), 4102 states have call predecessors, (4391), 4297 states have call successors, (4391) [2022-11-20 21:30:57,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13653 states to 13653 states and 19756 transitions. [2022-11-20 21:30:57,197 INFO L78 Accepts]: Start accepts. Automaton has 13653 states and 19756 transitions. Word has length 44 [2022-11-20 21:30:57,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:30:57,200 INFO L495 AbstractCegarLoop]: Abstraction has 13653 states and 19756 transitions. [2022-11-20 21:30:57,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 21:30:57,200 INFO L276 IsEmpty]: Start isEmpty. Operand 13653 states and 19756 transitions. [2022-11-20 21:30:57,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 21:30:57,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:30:57,207 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 21:30:57,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 21:30:57,207 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:30:57,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:30:57,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1332191993, now seen corresponding path program 1 times [2022-11-20 21:30:57,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:30:57,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198245255] [2022-11-20 21:30:57,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:30:57,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:30:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:30:57,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 21:30:57,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:30:57,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198245255] [2022-11-20 21:30:57,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198245255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:30:57,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:30:57,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:30:57,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699793584] [2022-11-20 21:30:57,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:30:57,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:30:57,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:30:57,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:30:57,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:30:57,492 INFO L87 Difference]: Start difference. First operand 13653 states and 19756 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 21:30:59,730 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 [] [2022-11-20 21:31:01,767 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 [] [2022-11-20 21:31:03,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:31:03,006 INFO L93 Difference]: Finished difference Result 13655 states and 19757 transitions. [2022-11-20 21:31:03,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:31:03,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 45 [2022-11-20 21:31:03,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:31:03,068 INFO L225 Difference]: With dead ends: 13655 [2022-11-20 21:31:03,068 INFO L226 Difference]: Without dead ends: 13634 [2022-11-20 21:31:03,077 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 [2022-11-20 21:31:03,078 INFO L413 NwaCegarLoop]: 2587 mSDtfsCounter, 2835 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2837 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-20 21:31:03,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2837 Valid, 2587 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 275 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2022-11-20 21:31:03,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13634 states. [2022-11-20 21:31:04,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13634 to 13634. [2022-11-20 21:31:04,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13634 states, 8337 states have (on average 1.3232577665827037) internal successors, (11032), 8700 states have internal predecessors, (11032), 4306 states have call successors, (4306), 1017 states have call predecessors, (4306), 990 states have return successors, (4387), 4098 states have call predecessors, (4387), 4293 states have call successors, (4387) [2022-11-20 21:31:04,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13634 states to 13634 states and 19725 transitions. [2022-11-20 21:31:04,360 INFO L78 Accepts]: Start accepts. Automaton has 13634 states and 19725 transitions. Word has length 45 [2022-11-20 21:31:04,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:31:04,360 INFO L495 AbstractCegarLoop]: Abstraction has 13634 states and 19725 transitions. [2022-11-20 21:31:04,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 21:31:04,361 INFO L276 IsEmpty]: Start isEmpty. Operand 13634 states and 19725 transitions. [2022-11-20 21:31:04,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 21:31:04,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:31:04,364 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 21:31:04,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 21:31:04,364 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:31:04,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:31:04,365 INFO L85 PathProgramCache]: Analyzing trace with hash 2089256632, now seen corresponding path program 1 times [2022-11-20 21:31:04,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:31:04,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957167716] [2022-11-20 21:31:04,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:31:04,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:31:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:31:04,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 21:31:04,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:31:04,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957167716] [2022-11-20 21:31:04,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957167716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:31:04,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:31:04,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:31:04,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844665131] [2022-11-20 21:31:04,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:31:04,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:31:04,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:31:04,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:31:04,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:31:04,681 INFO L87 Difference]: Start difference. First operand 13634 states and 19725 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 21:31:07,002 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 [] [2022-11-20 21:31:09,037 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 [] [2022-11-20 21:31:10,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:31:10,712 INFO L93 Difference]: Finished difference Result 22359 states and 31441 transitions. [2022-11-20 21:31:10,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:31:10,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-11-20 21:31:10,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:31:10,765 INFO L225 Difference]: With dead ends: 22359 [2022-11-20 21:31:10,765 INFO L226 Difference]: Without dead ends: 13002 [2022-11-20 21:31:10,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:31:10,807 INFO L413 NwaCegarLoop]: 2491 mSDtfsCounter, 1345 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 3781 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:31:10,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 3781 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 484 Invalid, 2 Unknown, 0 Unchecked, 5.3s Time] [2022-11-20 21:31:10,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13002 states. [2022-11-20 21:31:11,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13002 to 12975. [2022-11-20 21:31:11,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12975 states, 7867 states have (on average 1.3027837803482902) internal successors, (10249), 8163 states have internal predecessors, (10249), 3996 states have call successors, (3996), 1141 states have call predecessors, (3996), 1111 states have return successors, (4054), 3825 states have call predecessors, (4054), 3984 states have call successors, (4054) [2022-11-20 21:31:11,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12975 states to 12975 states and 18299 transitions. [2022-11-20 21:31:11,767 INFO L78 Accepts]: Start accepts. Automaton has 12975 states and 18299 transitions. Word has length 46 [2022-11-20 21:31:11,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:31:11,768 INFO L495 AbstractCegarLoop]: Abstraction has 12975 states and 18299 transitions. [2022-11-20 21:31:11,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 21:31:11,768 INFO L276 IsEmpty]: Start isEmpty. Operand 12975 states and 18299 transitions. [2022-11-20 21:31:11,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 21:31:11,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:31:11,771 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 21:31:11,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 21:31:11,772 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:31:11,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:31:11,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1650580738, now seen corresponding path program 1 times [2022-11-20 21:31:11,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:31:11,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069468716] [2022-11-20 21:31:11,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:31:11,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:31:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:31:12,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 21:31:12,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:31:12,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069468716] [2022-11-20 21:31:12,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069468716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:31:12,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:31:12,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:31:12,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919864088] [2022-11-20 21:31:12,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:31:12,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:31:12,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:31:12,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:31:12,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:31:12,102 INFO L87 Difference]: Start difference. First operand 12975 states and 18299 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 21:31:14,354 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 [] [2022-11-20 21:31:16,397 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 [] [2022-11-20 21:31:18,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:31:18,019 INFO L93 Difference]: Finished difference Result 12980 states and 18302 transitions. [2022-11-20 21:31:18,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:31:18,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2022-11-20 21:31:18,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:31:18,072 INFO L225 Difference]: With dead ends: 12980 [2022-11-20 21:31:18,072 INFO L226 Difference]: Without dead ends: 12957 [2022-11-20 21:31:18,080 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 [2022-11-20 21:31:18,081 INFO L413 NwaCegarLoop]: 2405 mSDtfsCounter, 1431 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 3618 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:31:18,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1433 Valid, 3618 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 409 Invalid, 2 Unknown, 0 Unchecked, 5.3s Time] [2022-11-20 21:31:18,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12957 states. [2022-11-20 21:31:18,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12957 to 12867. [2022-11-20 21:31:18,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12867 states, 7802 states have (on average 1.3040246090745962) internal successors, (10174), 8088 states have internal predecessors, (10174), 3959 states have call successors, (3959), 1127 states have call predecessors, (3959), 1105 states have return successors, (4018), 3806 states have call predecessors, (4018), 3948 states have call successors, (4018) [2022-11-20 21:31:18,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 18151 transitions. [2022-11-20 21:31:18,888 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 18151 transitions. Word has length 46 [2022-11-20 21:31:18,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:31:18,888 INFO L495 AbstractCegarLoop]: Abstraction has 12867 states and 18151 transitions. [2022-11-20 21:31:18,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 21:31:18,889 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 18151 transitions. [2022-11-20 21:31:18,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 21:31:18,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:31:18,892 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 21:31:18,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 21:31:18,893 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:31:18,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:31:18,893 INFO L85 PathProgramCache]: Analyzing trace with hash -372740246, now seen corresponding path program 1 times [2022-11-20 21:31:18,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:31:18,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556941259] [2022-11-20 21:31:18,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:31:18,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:31:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:31:19,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 21:31:19,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:31:19,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556941259] [2022-11-20 21:31:19,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556941259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:31:19,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:31:19,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:31:19,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50212971] [2022-11-20 21:31:19,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:31:19,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:31:19,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:31:19,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:31:19,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:31:19,194 INFO L87 Difference]: Start difference. First operand 12867 states and 18151 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 21:31:21,421 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 [] [2022-11-20 21:31:23,464 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 [] [2022-11-20 21:31:25,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:31:25,199 INFO L93 Difference]: Finished difference Result 12905 states and 18176 transitions. [2022-11-20 21:31:25,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:31:25,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2022-11-20 21:31:25,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:31:25,253 INFO L225 Difference]: With dead ends: 12905 [2022-11-20 21:31:25,253 INFO L226 Difference]: Without dead ends: 12877 [2022-11-20 21:31:25,263 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 [2022-11-20 21:31:25,264 INFO L413 NwaCegarLoop]: 2343 mSDtfsCounter, 2515 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2517 SdHoareTripleChecker+Valid, 2408 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:31:25,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2517 Valid, 2408 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 275 Invalid, 2 Unknown, 0 Unchecked, 5.2s Time] [2022-11-20 21:31:25,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12877 states. [2022-11-20 21:31:26,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12877 to 12825. [2022-11-20 21:31:26,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12825 states, 7779 states have (on average 1.3037665509705618) internal successors, (10142), 8058 states have internal predecessors, (10142), 3931 states have call successors, (3931), 1129 states have call predecessors, (3931), 1114 states have return successors, (3992), 3792 states have call predecessors, (3992), 3922 states have call successors, (3992) [2022-11-20 21:31:26,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12825 states to 12825 states and 18065 transitions. [2022-11-20 21:31:26,273 INFO L78 Accepts]: Start accepts. Automaton has 12825 states and 18065 transitions. Word has length 47 [2022-11-20 21:31:26,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:31:26,274 INFO L495 AbstractCegarLoop]: Abstraction has 12825 states and 18065 transitions. [2022-11-20 21:31:26,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 21:31:26,274 INFO L276 IsEmpty]: Start isEmpty. Operand 12825 states and 18065 transitions. [2022-11-20 21:31:26,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 21:31:26,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:31:26,278 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 21:31:26,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 21:31:26,278 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:31:26,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:31:26,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1328823557, now seen corresponding path program 1 times [2022-11-20 21:31:26,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:31:26,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452506706] [2022-11-20 21:31:26,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:31:26,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:31:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:31:26,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 21:31:26,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:31:26,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452506706] [2022-11-20 21:31:26,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452506706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:31:26,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:31:26,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:31:26,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841429429] [2022-11-20 21:31:26,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:31:26,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:31:26,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:31:26,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:31:26,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:31:26,561 INFO L87 Difference]: Start difference. First operand 12825 states and 18065 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 21:31:28,817 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 [] [2022-11-20 21:31:30,854 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 [] [2022-11-20 21:31:32,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:31:32,069 INFO L93 Difference]: Finished difference Result 12839 states and 18072 transitions. [2022-11-20 21:31:32,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:31:32,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2022-11-20 21:31:32,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:31:32,108 INFO L225 Difference]: With dead ends: 12839 [2022-11-20 21:31:32,108 INFO L226 Difference]: Without dead ends: 12797 [2022-11-20 21:31:32,115 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 [2022-11-20 21:31:32,116 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 2511 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2513 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-20 21:31:32,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2513 Valid, 2397 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 271 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2022-11-20 21:31:32,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12797 states. [2022-11-20 21:31:32,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12797 to 12754. [2022-11-20 21:31:32,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12754 states, 7736 states have (on average 1.3031282316442605) internal successors, (10081), 8014 states have internal predecessors, (10081), 3900 states have call successors, (3900), 1121 states have call predecessors, (3900), 1117 states have return successors, (3963), 3773 states have call predecessors, (3963), 3893 states have call successors, (3963) [2022-11-20 21:31:32,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12754 states to 12754 states and 17944 transitions. [2022-11-20 21:31:32,920 INFO L78 Accepts]: Start accepts. Automaton has 12754 states and 17944 transitions. Word has length 48 [2022-11-20 21:31:32,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:31:32,920 INFO L495 AbstractCegarLoop]: Abstraction has 12754 states and 17944 transitions. [2022-11-20 21:31:32,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 21:31:32,920 INFO L276 IsEmpty]: Start isEmpty. Operand 12754 states and 17944 transitions. [2022-11-20 21:31:32,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 21:31:32,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:31:32,924 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 21:31:32,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 21:31:32,925 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:31:32,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:31:32,926 INFO L85 PathProgramCache]: Analyzing trace with hash -527922708, now seen corresponding path program 1 times [2022-11-20 21:31:32,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:31:32,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855452409] [2022-11-20 21:31:32,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:31:32,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:31:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:31:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 21:31:33,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:31:33,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855452409] [2022-11-20 21:31:33,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855452409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:31:33,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:31:33,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 21:31:33,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147443852] [2022-11-20 21:31:33,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:31:33,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:31:33,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:31:33,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:31:33,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:31:33,273 INFO L87 Difference]: Start difference. First operand 12754 states and 17944 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 21:31:35,762 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 [] [2022-11-20 21:31:37,814 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 [] [2022-11-20 21:31:40,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:31:40,469 INFO L93 Difference]: Finished difference Result 14714 states and 20692 transitions. [2022-11-20 21:31:40,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:31:40,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 55 [2022-11-20 21:31:40,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:31:40,501 INFO L225 Difference]: With dead ends: 14714 [2022-11-20 21:31:40,501 INFO L226 Difference]: Without dead ends: 12754 [2022-11-20 21:31:40,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:31:40,508 INFO L413 NwaCegarLoop]: 2317 mSDtfsCounter, 3 mSDsluCounter, 6942 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 9259 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-20 21:31:40,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 9259 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1051 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2022-11-20 21:31:40,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12754 states. [2022-11-20 21:31:41,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12754 to 12754. [2022-11-20 21:31:41,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12754 states, 7736 states have (on average 1.3029989658738366) internal successors, (10080), 8013 states have internal predecessors, (10080), 3900 states have call successors, (3900), 1121 states have call predecessors, (3900), 1117 states have return successors, (3963), 3773 states have call predecessors, (3963), 3893 states have call successors, (3963) [2022-11-20 21:31:41,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12754 states to 12754 states and 17943 transitions. [2022-11-20 21:31:41,148 INFO L78 Accepts]: Start accepts. Automaton has 12754 states and 17943 transitions. Word has length 55 [2022-11-20 21:31:41,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:31:41,149 INFO L495 AbstractCegarLoop]: Abstraction has 12754 states and 17943 transitions. [2022-11-20 21:31:41,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 21:31:41,149 INFO L276 IsEmpty]: Start isEmpty. Operand 12754 states and 17943 transitions. [2022-11-20 21:31:41,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-20 21:31:41,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:31:41,153 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 21:31:41,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 21:31:41,154 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:31:41,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:31:41,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1727714039, now seen corresponding path program 1 times [2022-11-20 21:31:41,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:31:41,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816532611] [2022-11-20 21:31:41,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:31:41,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:31:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:31:41,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 21:31:41,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:31:41,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816532611] [2022-11-20 21:31:41,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816532611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:31:41,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:31:41,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 21:31:41,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131676593] [2022-11-20 21:31:41,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:31:41,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:31:41,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:31:41,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:31:41,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:31:41,638 INFO L87 Difference]: Start difference. First operand 12754 states and 17943 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 21:31:43,760 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 [] [2022-11-20 21:31:45,960 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 [] [2022-11-20 21:31:48,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:31:48,713 INFO L93 Difference]: Finished difference Result 25457 states and 35822 transitions. [2022-11-20 21:31:48,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:31:48,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2022-11-20 21:31:48,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:31:48,769 INFO L225 Difference]: With dead ends: 25457 [2022-11-20 21:31:48,769 INFO L226 Difference]: Without dead ends: 12736 [2022-11-20 21:31:48,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:31:48,803 INFO L413 NwaCegarLoop]: 2316 mSDtfsCounter, 4 mSDsluCounter, 6937 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 9253 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:31:48,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 9253 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1047 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2022-11-20 21:31:48,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12736 states. [2022-11-20 21:31:49,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12736 to 12736. [2022-11-20 21:31:49,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12736 states, 7726 states have (on average 1.302873414444732) internal successors, (10066), 8003 states have internal predecessors, (10066), 3896 states have call successors, (3896), 1117 states have call predecessors, (3896), 1113 states have return successors, (3959), 3769 states have call predecessors, (3959), 3889 states have call successors, (3959) [2022-11-20 21:31:49,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12736 states to 12736 states and 17921 transitions. [2022-11-20 21:31:49,673 INFO L78 Accepts]: Start accepts. Automaton has 12736 states and 17921 transitions. Word has length 59 [2022-11-20 21:31:49,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:31:49,674 INFO L495 AbstractCegarLoop]: Abstraction has 12736 states and 17921 transitions. [2022-11-20 21:31:49,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 21:31:49,674 INFO L276 IsEmpty]: Start isEmpty. Operand 12736 states and 17921 transitions. [2022-11-20 21:31:49,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 21:31:49,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:31:49,681 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 21:31:49,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 21:31:49,681 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:31:49,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:31:49,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1599025133, now seen corresponding path program 1 times [2022-11-20 21:31:49,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:31:49,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129102908] [2022-11-20 21:31:49,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:31:49,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:31:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:31:54,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 21:31:54,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:31:54,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129102908] [2022-11-20 21:31:54,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129102908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:31:54,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:31:54,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-20 21:31:54,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317072840] [2022-11-20 21:31:54,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:31:54,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 21:31:54,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:31:54,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 21:31:54,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-11-20 21:31:54,513 INFO L87 Difference]: Start difference. First operand 12736 states and 17921 transitions. Second operand has 16 states, 9 states have (on average 6.0) internal successors, (54), 12 states have internal predecessors, (54), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-20 21:31:57,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:32:00,115 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 [] [2022-11-20 21:32:11,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:32:11,303 INFO L93 Difference]: Finished difference Result 12761 states and 17940 transitions. [2022-11-20 21:32:11,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 21:32:11,304 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 9 states have (on average 6.0) internal successors, (54), 12 states have internal predecessors, (54), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 80 [2022-11-20 21:32:11,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:32:11,330 INFO L225 Difference]: With dead ends: 12761 [2022-11-20 21:32:11,330 INFO L226 Difference]: Without dead ends: 10796 [2022-11-20 21:32:11,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2022-11-20 21:32:11,338 INFO L413 NwaCegarLoop]: 2185 mSDtfsCounter, 13 mSDsluCounter, 28219 mSDsCounter, 0 mSdLazyCounter, 5494 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 30404 SdHoareTripleChecker+Invalid, 5502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 5494 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-11-20 21:32:11,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 30404 Invalid, 5502 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 5494 Invalid, 2 Unknown, 0 Unchecked, 15.6s Time] [2022-11-20 21:32:11,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10796 states. [2022-11-20 21:32:11,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10796 to 10796. [2022-11-20 21:32:11,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10796 states, 6549 states have (on average 1.3038631852191174) internal successors, (8539), 6792 states have internal predecessors, (8539), 3292 states have call successors, (3292), 958 states have call predecessors, (3292), 954 states have return successors, (3355), 3177 states have call predecessors, (3355), 3285 states have call successors, (3355) [2022-11-20 21:32:11,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10796 states to 10796 states and 15186 transitions. [2022-11-20 21:32:11,855 INFO L78 Accepts]: Start accepts. Automaton has 10796 states and 15186 transitions. Word has length 80 [2022-11-20 21:32:11,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:32:11,856 INFO L495 AbstractCegarLoop]: Abstraction has 10796 states and 15186 transitions. [2022-11-20 21:32:11,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 9 states have (on average 6.0) internal successors, (54), 12 states have internal predecessors, (54), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-20 21:32:11,856 INFO L276 IsEmpty]: Start isEmpty. Operand 10796 states and 15186 transitions. [2022-11-20 21:32:11,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 21:32:11,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:32:11,860 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-20 21:32:11,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 21:32:11,861 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:32:11,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:32:11,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1948494321, now seen corresponding path program 1 times [2022-11-20 21:32:11,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:32:11,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260670640] [2022-11-20 21:32:11,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:32:11,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:32:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 21:32:14,794 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 21:32:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 21:32:20,767 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-20 21:32:20,768 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 21:32:20,770 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 21:32:20,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 21:32:20,778 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:32:20,784 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 21:32:20,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:32:20 BoogieIcfgContainer [2022-11-20 21:32:20,961 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 21:32:20,961 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 21:32:20,961 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 21:32:20,962 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 21:32:20,962 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:29:40" (3/4) ... [2022-11-20 21:32:20,965 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 21:32:20,965 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 21:32:20,966 INFO L158 Benchmark]: Toolchain (without parser) took 181592.05ms. Allocated memory was 174.1MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 111.8MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 937.7MB. Max. memory is 16.1GB. [2022-11-20 21:32:20,966 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 132.1MB. Free memory is still 109.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:32:20,967 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4556.92ms. Allocated memory was 174.1MB in the beginning and 234.9MB in the end (delta: 60.8MB). Free memory was 111.5MB in the beginning and 148.3MB in the end (delta: -36.8MB). Peak memory consumption was 109.2MB. Max. memory is 16.1GB. [2022-11-20 21:32:20,967 INFO L158 Benchmark]: Boogie Procedure Inliner took 366.58ms. Allocated memory is still 234.9MB. Free memory was 148.3MB in the beginning and 105.3MB in the end (delta: 43.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2022-11-20 21:32:20,967 INFO L158 Benchmark]: Boogie Preprocessor took 455.23ms. Allocated memory is still 234.9MB. Free memory was 105.3MB in the beginning and 100.0MB in the end (delta: 5.3MB). Peak memory consumption was 48.3MB. Max. memory is 16.1GB. [2022-11-20 21:32:20,968 INFO L158 Benchmark]: RCFGBuilder took 15728.03ms. Allocated memory was 234.9MB in the beginning and 641.7MB in the end (delta: 406.8MB). Free memory was 100.0MB in the beginning and 381.5MB in the end (delta: -281.5MB). Peak memory consumption was 367.1MB. Max. memory is 16.1GB. [2022-11-20 21:32:20,968 INFO L158 Benchmark]: TraceAbstraction took 160470.70ms. Allocated memory was 641.7MB in the beginning and 2.3GB in the end (delta: 1.6GB). Free memory was 380.5MB in the beginning and 1.3GB in the end (delta: -896.0MB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2022-11-20 21:32:20,968 INFO L158 Benchmark]: Witness Printer took 4.42ms. Allocated memory is still 2.3GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:32:20,970 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 132.1MB. Free memory is still 109.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4556.92ms. Allocated memory was 174.1MB in the beginning and 234.9MB in the end (delta: 60.8MB). Free memory was 111.5MB in the beginning and 148.3MB in the end (delta: -36.8MB). Peak memory consumption was 109.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 366.58ms. Allocated memory is still 234.9MB. Free memory was 148.3MB in the beginning and 105.3MB in the end (delta: 43.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 455.23ms. Allocated memory is still 234.9MB. Free memory was 105.3MB in the beginning and 100.0MB in the end (delta: 5.3MB). Peak memory consumption was 48.3MB. Max. memory is 16.1GB. * RCFGBuilder took 15728.03ms. Allocated memory was 234.9MB in the beginning and 641.7MB in the end (delta: 406.8MB). Free memory was 100.0MB in the beginning and 381.5MB in the end (delta: -281.5MB). Peak memory consumption was 367.1MB. Max. memory is 16.1GB. * TraceAbstraction took 160470.70ms. Allocated memory was 641.7MB in the beginning and 2.3GB in the end (delta: 1.6GB). Free memory was 380.5MB in the beginning and 1.3GB in the end (delta: -896.0MB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Witness Printer took 4.42ms. Allocated memory is still 2.3GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13668]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 12798, overapproximation of bitwiseAnd at line 12804. Possible FailurePath: [L7687] static unsigned int vhost_zcopy_mask ; [L10792] static struct target_fabric_configfs *tcm_vhost_fabric_configfs ; [L10793] static struct workqueue_struct *tcm_vhost_workqueue ; [L10794-L10797] static struct mutex tcm_vhost_mutex = {{1}, {{{{{0U}}, 3735899821U, 4294967295U, 0xffffffffffffffffUL, {0, {0, 0}, "tcm_vhost_mutex.wait_lock", 0, 0UL}}}}, {& tcm_vhost_mutex.wait_list, & tcm_vhost_mutex.wait_list}, 0, 0, (void *)(& tcm_vhost_mutex), {0, {0, 0}, "tcm_vhost_mutex", 0, 0UL}}; [L10798] static struct list_head tcm_vhost_list = {& tcm_vhost_list, & tcm_vhost_list}; [L12183-L12186] static struct file_operations const vhost_scsi_fops = {& __this_module, & noop_llseek, 0, 0, 0, 0, 0, 0, & vhost_scsi_ioctl, & vhost_scsi_compat_ioctl, 0, & vhost_scsi_open, 0, & vhost_scsi_release, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; [L12187-L12188] static struct miscdevice vhost_scsi_misc = {255, "vhost-scsi", & vhost_scsi_fops, {0, 0}, 0, 0, 0, (unsigned short)0}; [L12540] static struct target_fabric_tpg_attribute tcm_vhost_tpg_nexus = {{"nexus", & __this_module, 420U}, & tcm_vhost_tpg_show_nexus, & tcm_vhost_tpg_store_nexus}; [L12541] static struct configfs_attribute *tcm_vhost_tpg_attrs[2U] = { & tcm_vhost_tpg_nexus.attr, 0}; [L12732] static struct target_fabric_wwn_attribute tcm_vhost_wwn_version = {{"version", & __this_module, 292U}, & tcm_vhost_wwn_show_attr_version, 0}; [L12733] static struct configfs_attribute *tcm_vhost_wwn_attrs[2U] = { & tcm_vhost_wwn_version.attr, 0}; [L12734-L12745] static struct target_core_fabric_ops tcm_vhost_ops = {0, & tcm_vhost_get_fabric_name, & tcm_vhost_get_fabric_proto_ident, & tcm_vhost_get_fabric_wwn, & tcm_vhost_get_tag, & tcm_vhost_get_default_depth, & tcm_vhost_get_pr_transport_id, & tcm_vhost_get_pr_transport_id_len, & tcm_vhost_parse_pr_out_transport_id, & tcm_vhost_check_true, & tcm_vhost_check_true, & tcm_vhost_check_false, & tcm_vhost_check_false, 0, & tcm_vhost_alloc_fabric_acl, & tcm_vhost_release_fabric_acl, & tcm_vhost_tpg_get_inst_index, 0, & tcm_vhost_release_cmd, 0, & tcm_vhost_shutdown_session, & tcm_vhost_close_session, & tcm_vhost_sess_get_index, 0, & tcm_vhost_write_pending, & tcm_vhost_write_pending_status, & tcm_vhost_set_default_node_attrs, & tcm_vhost_get_task_tag, & tcm_vhost_get_cmd_state, & tcm_vhost_queue_data_in, & tcm_vhost_queue_status, & tcm_vhost_queue_tm_rsp, & tcm_vhost_make_tport, & tcm_vhost_drop_tport, & tcm_vhost_make_tpg, & tcm_vhost_drop_tpg, & tcm_vhost_port_link, & tcm_vhost_port_unlink, 0, 0, & tcm_vhost_make_nodeacl, & tcm_vhost_drop_nodeacl}; [L12885] int LDV_IN_INTERRUPT ; [L13678] static int ldv_mutex_cred_guard_mutex ; [L13785] static int ldv_mutex_lock ; [L13892] static int ldv_mutex_mtx ; [L13999] static int ldv_mutex_mutex ; [L14106] static int ldv_mutex_tcm_vhost_mutex ; [L14213] static int ldv_mutex_tv_tpg_mutex ; [L12888] struct inode *var_group1 ; [L12889] struct file *var_group2 ; [L12890] unsigned int var_vhost_scsi_ioctl_44_p1 ; [L12891] unsigned long var_vhost_scsi_ioctl_44_p2 ; [L12892] unsigned int var_vhost_scsi_compat_ioctl_45_p1 ; [L12893] unsigned long var_vhost_scsi_compat_ioctl_45_p2 ; [L12894] int res_vhost_scsi_open_39 ; [L12895] struct se_portal_group *var_group3 ; [L12896] struct se_node_acl *var_group4 ; [L12897] struct t10_pr_registration *var_tcm_vhost_get_pr_transport_id_7_p2 ; [L12898] int *var_tcm_vhost_get_pr_transport_id_7_p3 ; [L12899] unsigned char *var_tcm_vhost_get_pr_transport_id_7_p4 ; [L12900] struct t10_pr_registration *var_tcm_vhost_get_pr_transport_id_len_8_p2 ; [L12901] int *var_tcm_vhost_get_pr_transport_id_len_8_p3 ; [L12902] char const *var_tcm_vhost_parse_pr_out_transport_id_9_p1 ; [L12903] u32 *var_tcm_vhost_parse_pr_out_transport_id_9_p2 ; [L12904] char **var_tcm_vhost_parse_pr_out_transport_id_9_p3 ; [L12905] struct se_cmd *var_group5 ; [L12906] struct se_session *var_group6 ; [L12907] struct target_fabric_configfs *var_group7 ; [L12908] struct config_group *var_group8 ; [L12909] char const *var_tcm_vhost_make_tport_59_p2 ; [L12910] struct se_wwn *var_group9 ; [L12911] char const *var_tcm_vhost_make_tpg_57_p2 ; [L12912] struct se_lun *var_group10 ; [L12913] char const *var_tcm_vhost_make_nodeacl_51_p2 ; [L12914] int ldv_s_vhost_scsi_fops_file_operations ; [L12915] int tmp ; [L12916] int tmp___0 ; [L12917] int tmp___1 ; [L12919] ldv_s_vhost_scsi_fops_file_operations = 0 [L12920] LDV_IN_INTERRUPT = 1 [L12921] CALL ldv_initialize() [L14323] ldv_mutex_cred_guard_mutex = 1 [L14324] ldv_mutex_lock = 1 [L14325] ldv_mutex_mtx = 1 [L14326] ldv_mutex_mutex = 1 [L14327] ldv_mutex_tcm_vhost_mutex = 1 [L14328] ldv_mutex_tv_tpg_mutex = 1 [L12921] RET ldv_initialize() [L12922] FCALL ldv_handler_precall() VAL [__this_module={36893488147419103247:36893488147419103292}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ldv_s_vhost_scsi_fops_file_operations=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={0:0}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L12923] CALL, EXPR tcm_vhost_init() [L12839] int ret ; [L12840] struct lock_class_key __key ; [L12841] char const *__lock_name ; [L12842] struct workqueue_struct *tmp ; [L12844] ret = -12 [L12845] __lock_name = "tcm_vhost" [L12846] tmp = __alloc_workqueue_key("tcm_vhost", 0U, 0, & __key, __lock_name) [L12847] tcm_vhost_workqueue = tmp VAL [__alloc_workqueue_key("tcm_vhost", 0U, 0, & __key, __lock_name)={365:-364}, __key={363:0}, __lock_name={351:0}, __this_module={36893488147419103247:36893488147419103292}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ret=-12, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, tmp={365:-364}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L12848] COND FALSE !((unsigned long )tcm_vhost_workqueue == (unsigned long )((struct workqueue_struct *)0)) [L12852] CALL, EXPR vhost_scsi_register() [L12191] int tmp ; [L12193] CALL, EXPR misc_register(& vhost_scsi_misc) [L14561] return __VERIFIER_nondet_int(); [L12193] RET, EXPR misc_register(& vhost_scsi_misc) [L12193] tmp = misc_register(& vhost_scsi_misc) [L12194] return (tmp); [L12852] RET, EXPR vhost_scsi_register() [L12852] ret = vhost_scsi_register() [L12853] COND FALSE !(ret < 0) [L12857] CALL, EXPR tcm_vhost_register_configfs() [L12748] struct target_fabric_configfs *fabric ; [L12749] int ret ; [L12750] struct _ddebug descriptor ; [L12751] struct new_utsname *tmp ; [L12752] struct new_utsname *tmp___0 ; [L12753] long tmp___1 ; [L12754] long tmp___2 ; [L12755] long tmp___3 ; [L12756] struct _ddebug descriptor___0 ; [L12757] long tmp___4 ; [L12759] descriptor.modname = "tcm_vhost" [L12760] descriptor.function = "tcm_vhost_register_configfs" [L12761] descriptor.filename = "/work/vladimir/UFO/Work/test/work/current--X--drivers/vhost/tcm_vhost.ko--X--defaultlinux-3.7.3--X--32_7a--X--ufo/linux-3.7.3/csd_deg_dscv/12/dscv_tempdir/dscv/ri/32_7a/drivers/vhost/tcm_vhost.c.prepared" [L12762] descriptor.format = "TCM_VHOST fabric module %s on %s/%s on 3.7.3\n" [L12763] descriptor.lineno = 1561U [L12764] descriptor.flags = 0U [L12765] EXPR descriptor.flags VAL [__this_module={36893488147419103247:36893488147419103292}, descriptor={367:0}, descriptor.flags=0, descriptor___0={366:0}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L12765] CALL, EXPR ldv__builtin_expect((long )descriptor.flags & 1L, 0L) VAL [\old(c)=0, \old(exp)=0, __this_module={36893488147419103247:36893488147419103292}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L13675] return (exp); [L12765] RET, EXPR ldv__builtin_expect((long )descriptor.flags & 1L, 0L) VAL [__this_module={36893488147419103247:36893488147419103292}, descriptor={367:0}, descriptor.flags=0, descriptor___0={366:0}, ldv__builtin_expect((long )descriptor.flags & 1L, 0L)=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L12765] tmp___1 = ldv__builtin_expect((long )descriptor.flags & 1L, 0L) [L12766] COND FALSE !(tmp___1 != 0L) VAL [__this_module={36893488147419103247:36893488147419103292}, descriptor={367:0}, descriptor___0={366:0}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, tmp___1=0, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L12773] CALL, EXPR target_fabric_configfs_init(& __this_module, "vhost") [L14636] CALL, EXPR ldv_malloc(sizeof(struct target_fabric_configfs)) VAL [__this_module={36893488147419103247:36893488147419103292}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L7220] COND FALSE !(__VERIFIER_nondet_int()) [L7225] return ((void *)0); [L14636] RET, EXPR ldv_malloc(sizeof(struct target_fabric_configfs)) VAL [__this_module={36893488147419103247:36893488147419103292}, arg0={36893488147419103247:36893488147419103292}, arg0={36893488147419103247:36893488147419103292}, arg1={338:0}, arg1={338:0}, LDV_IN_INTERRUPT=1, ldv_malloc(sizeof(struct target_fabric_configfs))={0:0}, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L14636] return ldv_malloc(sizeof(struct target_fabric_configfs)); [L12773] RET, EXPR target_fabric_configfs_init(& __this_module, "vhost") [L12773] fabric = target_fabric_configfs_init(& __this_module, "vhost") [L12774] CALL, EXPR IS_ERR((void const *)fabric) VAL [__this_module={36893488147419103247:36893488147419103292}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ptr={0:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L6795] long tmp ; VAL [__this_module={36893488147419103247:36893488147419103292}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ptr={0:0}, ptr={0:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L6797] CALL, EXPR ldv__builtin_expect((unsigned long )ptr > 0xfffffffffffff000UL, 0L) VAL [\old(c)=0, \old(exp)=0, __this_module={36893488147419103247:36893488147419103292}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L13675] return (exp); [L6797] RET, EXPR ldv__builtin_expect((unsigned long )ptr > 0xfffffffffffff000UL, 0L) VAL [__this_module={36893488147419103247:36893488147419103292}, ldv__builtin_expect((unsigned long )ptr > 0xfffffffffffff000UL, 0L)=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ptr={0:0}, ptr={0:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L6797] tmp = ldv__builtin_expect((unsigned long )ptr > 0xfffffffffffff000UL, 0L) [L6798] return (tmp); [L12774] RET, EXPR IS_ERR((void const *)fabric) VAL [__this_module={36893488147419103247:36893488147419103292}, descriptor={367:0}, descriptor___0={366:0}, fabric={0:0}, IS_ERR((void const *)fabric)=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, tmp___1=0, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L12774] tmp___3 = IS_ERR((void const *)fabric) [L12775] COND FALSE !(tmp___3 != 0L) [L12781] fabric->tf_ops = tcm_vhost_ops [L12782] fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = (struct configfs_attribute **)(& tcm_vhost_wwn_attrs) [L12783] fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = (struct configfs_attribute **)(& tcm_vhost_tpg_attrs) [L12784] fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = 0 [L12785] fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = 0 [L12786] fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = 0 [L12787] fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = 0 [L12788] fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = 0 [L12789] fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = 0 [L12790] fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = 0 [L12791] CALL, EXPR target_fabric_configfs_register(fabric) [L14640] return __VERIFIER_nondet_int(); [L12791] RET, EXPR target_fabric_configfs_register(fabric) [L12791] ret = target_fabric_configfs_register(fabric) [L12792] COND FALSE !(ret < 0) [L12797] tcm_vhost_fabric_configfs = fabric [L12798] descriptor___0.modname = "tcm_vhost" [L12799] descriptor___0.function = "tcm_vhost_register_configfs" [L12800] descriptor___0.filename = "/work/vladimir/UFO/Work/test/work/current--X--drivers/vhost/tcm_vhost.ko--X--defaultlinux-3.7.3--X--32_7a--X--ufo/linux-3.7.3/csd_deg_dscv/12/dscv_tempdir/dscv/ri/32_7a/drivers/vhost/tcm_vhost.c.prepared" [L12801] descriptor___0.format = "TCM_VHOST[0] - Set fabric -> tcm_vhost_fabric_configfs\n" [L12802] descriptor___0.lineno = 1599U [L12803] descriptor___0.flags = 0U [L12804] EXPR descriptor___0.flags VAL [__this_module={36893488147419103247:36893488147419103292}, descriptor={367:0}, descriptor___0={366:0}, descriptor___0.flags=0, fabric={0:0}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ret=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, tmp___1=0, tmp___3=0, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L12804] CALL, EXPR ldv__builtin_expect((long )descriptor___0.flags & 1L, 0L) VAL [\old(c)=0, \old(exp)=0, __this_module={36893488147419103247:36893488147419103292}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L13675] return (exp); [L12804] RET, EXPR ldv__builtin_expect((long )descriptor___0.flags & 1L, 0L) VAL [__this_module={36893488147419103247:36893488147419103292}, descriptor={367:0}, descriptor___0={366:0}, descriptor___0.flags=0, fabric={0:0}, ldv__builtin_expect((long )descriptor___0.flags & 1L, 0L)=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ret=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, tmp___1=0, tmp___3=0, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L12804] tmp___4 = ldv__builtin_expect((long )descriptor___0.flags & 1L, 0L) [L12805] COND FALSE !(tmp___4 != 0L) [L12809] return (0); [L12809] return (0); [L12809] return (0); VAL [\result=0, __dynamic_pr_debug(& descriptor___0, "TCM_VHOST[0] - Set fabric -> tcm_vhost_fabric_configfs\n")=36893488147419103249, __this_module={36893488147419103247:36893488147419103292}, fabric={0:0}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ret=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, tmp___1=0, tmp___3=0, tmp___4=0, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L12857] RET, EXPR tcm_vhost_register_configfs() [L12857] ret = tcm_vhost_register_configfs() [L12858] COND FALSE !(ret < 0) [L12862] return (0); [L12862] return (0); VAL [\result=0, __alloc_workqueue_key("tcm_vhost", 0U, 0, & __key, __lock_name)={365:-364}, __lock_name={351:0}, __this_module={36893488147419103247:36893488147419103292}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ret=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, tmp={365:-364}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L12923] RET, EXPR tcm_vhost_init() [L12923] tmp = tcm_vhost_init() [L12924] COND FALSE !(tmp != 0) VAL [__this_module={36893488147419103247:36893488147419103292}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ldv_s_vhost_scsi_fops_file_operations=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, tmp=0, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L13102] tmp___1 = __VERIFIER_nondet_int() [L13103] COND TRUE tmp___1 != 0 || ldv_s_vhost_scsi_fops_file_operations != 0 [L12930] tmp___0 = __VERIFIER_nondet_int() [L12932] case 0: [L12945] case 1: [L12953] case 2: VAL [__this_module={36893488147419103247:36893488147419103292}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ldv_s_vhost_scsi_fops_file_operations=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, tmp=0, tmp___0=2, tmp___1=1, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L12954] FCALL ldv_handler_precall() VAL [__this_module={36893488147419103247:36893488147419103292}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ldv_s_vhost_scsi_fops_file_operations=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, tmp=0, tmp___0=2, tmp___1=1, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L12955] CALL vhost_scsi_ioctl(var_group2, var_vhost_scsi_ioctl_44_p1, var_vhost_scsi_ioctl_44_p2) VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103247:36893488147419103292}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L12095] struct vhost_scsi *vs ; [L12096] struct vhost_scsi_target backend ; [L12097] void *argp ; [L12098] u64 *featurep ; [L12099] u64 features ; [L12100] int r ; [L12101] int abi_version ; [L12102] unsigned long tmp ; [L12103] int tmp___0 ; [L12104] unsigned long tmp___1 ; [L12105] int tmp___2 ; [L12106] int tmp___3 ; [L12107] int tmp___4 ; [L12108] unsigned long tmp___5 ; [L12109] int tmp___6 ; [L12110] long tmp___7 ; [L12112] EXPR f->private_data [L12112] vs = (struct vhost_scsi *)f->private_data [L12113] argp = (void *)arg [L12114] featurep = (u64 *)argp [L12115] abi_version = 0 [L12117] case 1088991040U: [L12129] case 1088991041U: [L12141] case 1074048834U: [L12148] case 2148052736U: [L12156] case 1074310912U: [L12164] default: [L12165] CALL ldv_mutex_lock_44(& vs->dev.mutex) [L13467] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103247:36893488147419103292}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, lock={36893488147419103235:401}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L14037] COND TRUE ldv_mutex_mutex == 1 VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103247:36893488147419103292}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, lock={36893488147419103235:401}, lock={36893488147419103235:401}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L14041] ldv_mutex_mutex = 2 [L13467] RET ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103247:36893488147419103292}, ldv_func_arg1={36893488147419103235:401}, ldv_func_arg1={36893488147419103235:401}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L13468] FCALL mutex_lock(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103247:36893488147419103292}, ldv_func_arg1={36893488147419103235:401}, ldv_func_arg1={36893488147419103235:401}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L12165] RET ldv_mutex_lock_44(& vs->dev.mutex) [L12166] CALL vhost_dev_ioctl(& vs->dev, ioctl, arg) [L8943] void *argp ; [L8944] struct file *eventfp ; [L8945] struct file *filep ; [L8946] struct eventfd_ctx *ctx ; [L8947] u64 p ; [L8948] long r ; [L8949] int i ; [L8950] int fd ; [L8951] unsigned long tmp ; [L8952] struct vhost_virtqueue *vq ; [L8953] void *base ; [L8954] int tmp___0 ; [L8955] int __ret_gu ; [L8956] unsigned long __val_gu ; [L8957] struct file *tmp___1 ; [L8958] long tmp___2 ; [L8959] struct eventfd_ctx *tmp___3 ; [L8961] argp = (void *)arg [L8962] filep = 0 [L8963] ctx = 0 VAL [\old(arg)=18446744073709551614, \old(ioctl)=2147483648, \old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103247:36893488147419103292}, arg=18446744073709551614, argp={0:-2}, ctx={0:0}, d={36893488147419103235:385}, d={36893488147419103235:385}, filep={0:0}, ioctl=2147483648, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, p={371:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L8964] COND FALSE !(ioctl == 44801U) [L8969] CALL, EXPR vhost_dev_check_owner(d) [L8126] struct task_struct *tmp ; VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103247:36893488147419103292}, dev={36893488147419103235:385}, dev={36893488147419103235:385}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L8128] CALL, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103247:36893488147419103292}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L6751] struct task_struct *pfo_ret__ ; [L6754] case 1UL: [L6757] case 2UL: [L6760] case 4UL: [L6763] case 8UL: [L6770] return (pfo_ret__); [L8128] RET, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103247:36893488147419103292}, dev={36893488147419103235:385}, dev={36893488147419103235:385}, get_current()={36893488147419103242:-3}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L8128] tmp = get_current() [L8129] EXPR dev->mm [L8129] EXPR tmp->mm [L8129] return ((unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L); [L8969] RET, EXPR vhost_dev_check_owner(d) [L8969] r = vhost_dev_check_owner(d) [L8970] COND FALSE !(r != 0L) [L8975] case 1074310915U: [L8978] case 1074310916U: [L9009] case 1074048775U: [L9080] default: [L9081] CALL vhost_set_vring(d, (int )ioctl, argp) [L8658] struct file *eventfp ; [L8659] struct file *filep ; [L8660] bool pollstart ; [L8661] bool pollstop ; [L8662] struct eventfd_ctx *ctx ; [L8663] u32 *idxp ; [L8664] struct vhost_virtqueue *vq ; [L8665] struct vhost_vring_state s ; [L8666] struct vhost_vring_file f ; [L8667] struct vhost_vring_addr a ; [L8668] u32 idx ; [L8669] long r ; [L8670] int __ret_gu ; [L8671] unsigned long __val_gu ; [L8672] unsigned long tmp ; [L8673] unsigned long tmp___0 ; [L8674] int tmp___1 ; [L8675] unsigned long tmp___2 ; [L8676] int tmp___3 ; [L8677] int tmp___4 ; [L8678] unsigned long tmp___5 ; [L8679] struct file *tmp___6 ; [L8680] long tmp___7 ; [L8681] struct file *tmp___8 ; [L8682] unsigned long tmp___9 ; [L8683] struct file *tmp___10 ; [L8684] long tmp___11 ; [L8685] struct eventfd_ctx *tmp___12 ; [L8686] unsigned long tmp___13 ; [L8687] struct file *tmp___14 ; [L8688] long tmp___15 ; [L8689] struct eventfd_ctx *tmp___16 ; [L8691] filep = 0 [L8692] pollstart = 0 [L8693] pollstop = 0 [L8694] ctx = 0 [L8695] idxp = (u32 *)argp VAL [\old(ioctl)=2147483648, \old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103247:36893488147419103292}, a={362:0}, argp={0:-2}, argp={0:-2}, ctx={0:0}, d={36893488147419103235:385}, d={36893488147419103235:385}, f={374:0}, filep={0:0}, idxp={0:-2}, ioctl=2147483648, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, pollstart=0, pollstop=0, s={373:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L8696] FCALL might_fault() VAL [\old(ioctl)=2147483648, \old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103247:36893488147419103292}, a={362:0}, argp={0:-2}, argp={0:-2}, ctx={0:0}, d={36893488147419103235:385}, d={36893488147419103235:385}, f={374:0}, filep={0:0}, idxp={0:-2}, ioctl=2147483648, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, pollstart=0, pollstop=0, s={373:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L8698] case 1UL: [L8701] case 2UL: [L8704] case 4UL: [L8715] idx = (unsigned int )__val_gu [L8716] r = (long )__ret_gu VAL [\old(ioctl)=2147483648, \old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __ret_gu=375, __this_module={36893488147419103247:36893488147419103292}, __val_gu=4294967297, a={362:0}, argp={0:-2}, argp={0:-2}, ctx={0:0}, d={36893488147419103235:385}, d={36893488147419103235:385}, f={374:0}, filep={0:0}, idx=1, idxp={0:-2}, ioctl=2147483648, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, pollstart=0, pollstop=0, r=375, s={373:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L8717] COND FALSE !(r < 0L) [L8721] EXPR d->nvqs VAL [\old(ioctl)=2147483648, \old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __ret_gu=375, __this_module={36893488147419103247:36893488147419103292}, __val_gu=4294967297, a={362:0}, argp={0:-2}, argp={0:-2}, ctx={0:0}, d={36893488147419103235:385}, d={36893488147419103235:385}, d->nvqs=8589934591, f={374:0}, filep={0:0}, idx=1, idxp={0:-2}, ioctl=2147483648, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, pollstart=0, pollstop=0, r=375, s={373:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L8721] COND FALSE !((u32 )d->nvqs <= idx) [L8725] EXPR d->vqs [L8725] vq = d->vqs + (unsigned long )idx [L8726] CALL ldv_mutex_lock_14(& vq->mutex) [L13227] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=2, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103247:36893488147419103292}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, lock={36893488147419103248:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L14037] COND FALSE !(ldv_mutex_mutex == 1) VAL [\old(ldv_mutex_mutex)=2, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103247:36893488147419103292}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, lock={36893488147419103248:0}, lock={36893488147419103248:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L14039] CALL ldv_error() VAL [\old(ldv_mutex_mutex)=2, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103247:36893488147419103292}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] [L13668] reach_error() VAL [\old(ldv_mutex_mutex)=2, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103247:36893488147419103292}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={354:0}, tcm_vhost_mutex={353:0}, tcm_vhost_ops={361:0}, tcm_vhost_tpg_attrs={358:0}, tcm_vhost_tpg_nexus={357:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={360:0}, tcm_vhost_wwn_version={359:0}, vhost_scsi_fops={355:0}, vhost_scsi_misc={356:0}, vhost_zcopy_mask=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 115 procedures, 1965 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 160.2s, OverallIterations: 19, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 125.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 mSolverCounterUnknown, 33229 SdHoareTripleChecker+Valid, 113.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33008 mSDsluCounter, 119782 SdHoareTripleChecker+Invalid, 109.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 70389 mSDsCounter, 422 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14871 IncrementalHoareTripleChecker+Invalid, 15329 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 422 mSolverCounterUnsat, 49393 mSDtfsCounter, 14871 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13655occurred in iteration=8, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 14.1s AutomataMinimizationTime, 18 MinimizatonAttempts, 6664 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 4.6s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 761 NumberOfCodeBlocks, 761 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 662 ConstructedInterpolants, 0 QuantifiedInterpolants, 1366 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 36/36 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-20 21:32:21,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9 --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 3d776a54fbebbd358d59ab0126298feae1e40360b6fb5e6158cd54ba5ef877f7 --- 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-6b4ec56 [2022-11-20 21:32:23,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:32:23,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:32:23,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:32:23,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:32:23,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:32:23,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:32:23,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:32:23,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:32:23,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:32:23,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:32:23,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:32:23,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:32:23,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:32:23,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:32:23,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:32:23,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:32:23,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:32:23,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:32:23,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:32:23,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:32:23,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:32:23,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:32:23,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:32:23,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:32:23,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:32:23,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:32:23,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:32:23,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:32:23,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:32:23,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:32:23,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:32:23,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:32:23,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:32:23,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:32:23,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:32:23,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:32:23,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:32:23,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:32:23,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:32:23,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:32:23,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-20 21:32:23,835 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:32:23,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:32:23,838 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:32:23,838 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:32:23,839 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:32:23,840 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:32:23,840 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:32:23,840 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:32:23,840 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:32:23,840 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:32:23,842 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:32:23,842 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:32:23,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:32:23,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:32:23,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:32:23,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:32:23,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:32:23,844 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 21:32:23,844 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 21:32:23,844 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 21:32:23,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:32:23,845 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:32:23,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:32:23,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:32:23,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 21:32:23,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:32:23,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:32:23,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:32:23,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:32:23,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:32:23,847 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 21:32:23,847 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 21:32:23,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:32:23,848 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:32:23,848 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 21:32:23,848 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d776a54fbebbd358d59ab0126298feae1e40360b6fb5e6158cd54ba5ef877f7 [2022-11-20 21:32:24,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:32:24,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:32:24,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:32:24,266 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:32:24,266 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:32:24,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2022-11-20 21:32:27,504 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:32:28,298 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:32:28,299 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2022-11-20 21:32:28,382 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9/data/f68d2e557/54ddd8a3c3d2488f82667c29c6d46fb5/FLAG9ba9e5aa9 [2022-11-20 21:32:28,404 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d27170-3e77-4b56-96ca-802a32b56f38/bin/utaipan-6cKwYrpEi9/data/f68d2e557/54ddd8a3c3d2488f82667c29c6d46fb5 [2022-11-20 21:32:28,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:32:28,408 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:32:28,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:32:28,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:32:28,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:32:28,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:32:28" (1/1) ... [2022-11-20 21:32:28,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@613fbfd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:28, skipping insertion in model container [2022-11-20 21:32:28,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:32:28" (1/1) ... [2022-11-20 21:32:28,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:32:28,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:32:32,008 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: de.uni_freiburg.informatik.ultimate.boogie.typechecker.TypeCheckException: Type check failed for C: snprintf(page, 4096UL, "%s\n", (char *)(& ((tv_nexus->tvn_se_sess)->se_node_acl)->initiatorname)) [12438] at de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) at de.uni_freiburg.informatik.ultimate.boogie.typechecker.TypeCheckHelper.typeCheckBinaryExpression(TypeCheckHelper.java:207) at de.uni_freiburg.informatik.ultimate.boogie.ExpressionFactory.constructBinaryExpression(ExpressionFactory.java:617) at de.uni_freiburg.informatik.ultimate.boogie.ExpressionFactory.newBinaryExpression(ExpressionFactory.java:172) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleSnPrintF(StandardFunctionHandler.java:959) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.lambda$21(StandardFunctionHandler.java:305) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:242) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1463) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:728) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1413) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1489) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3314) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-20 21:32:32,018 INFO L158 Benchmark]: Toolchain (without parser) took 3608.62ms. Allocated memory was 77.6MB in the beginning and 107.0MB in the end (delta: 29.4MB). Free memory was 37.2MB in the beginning and 37.7MB in the end (delta: -558.2kB). Peak memory consumption was 41.3MB. Max. memory is 16.1GB. [2022-11-20 21:32:32,019 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 77.6MB. Free memory is still 54.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:32:32,020 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3605.76ms. Allocated memory was 77.6MB in the beginning and 107.0MB in the end (delta: 29.4MB). Free memory was 36.9MB in the beginning and 37.7MB in the end (delta: -801.9kB). Peak memory consumption was 41.3MB. Max. memory is 16.1GB. [2022-11-20 21:32:32,022 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 77.6MB. Free memory is still 54.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3605.76ms. Allocated memory was 77.6MB in the beginning and 107.0MB in the end (delta: 29.4MB). Free memory was 36.9MB in the beginning and 37.7MB in the end (delta: -801.9kB). Peak memory consumption was 41.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: TypeCheckException: Type check failed for C: snprintf(page, 4096UL, "%s\n", (char *)(& ((tv_nexus->tvn_se_sess)->se_node_acl)->initiatorname)) [12438] de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: TypeCheckException: Type check failed for C: snprintf(page, 4096UL, "%s\n", (char *)(& ((tv_nexus->tvn_se_sess)->se_node_acl)->initiatorname)) [12438]: de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: TypeCheckException: Type check failed for C: snprintf(page, 4096UL, "%s\n", (char *)(& ((tv_nexus->tvn_se_sess)->se_node_acl)->initiatorname)) [12438]