./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6d6f0e-010c-4ca7-ae98-5600ca3d2e90/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6d6f0e-010c-4ca7-ae98-5600ca3d2e90/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6d6f0e-010c-4ca7-ae98-5600ca3d2e90/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6d6f0e-010c-4ca7-ae98-5600ca3d2e90/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6d6f0e-010c-4ca7-ae98-5600ca3d2e90/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6d6f0e-010c-4ca7-ae98-5600ca3d2e90/bin/utaipan-EQgc7hIp5V --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 29824587617da9a02b15e9129afbb9cf5ee59d8d3dbb506aa4fe0ed84097e2f1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:34:23,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:34:23,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:34:23,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:34:23,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:34:23,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:34:23,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:34:23,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:34:23,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:34:23,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:34:23,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:34:23,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:34:23,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:34:23,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:34:23,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:34:23,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:34:23,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:34:23,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:34:23,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:34:23,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:34:23,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:34:23,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:34:23,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:34:23,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:34:23,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:34:23,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:34:23,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:34:23,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:34:23,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:34:23,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:34:23,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:34:23,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:34:23,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:34:23,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:34:23,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:34:23,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:34:23,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:34:23,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:34:23,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:34:23,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:34:23,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:34:23,327 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6d6f0e-010c-4ca7-ae98-5600ca3d2e90/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:34:23,382 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:34:23,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:34:23,382 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:34:23,383 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:34:23,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:34:23,384 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:34:23,384 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:34:23,385 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:34:23,385 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:34:23,385 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:34:23,385 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:34:23,386 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:34:23,386 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:34:23,386 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:34:23,386 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:34:23,387 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:34:23,387 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:34:23,387 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:34:23,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:34:23,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:34:23,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:34:23,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:34:23,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:34:23,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:34:23,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:34:23,390 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:34:23,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:34:23,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:34:23,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:34:23,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:34:23,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:34:23,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:34:23,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:34:23,393 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:34:23,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:34:23,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:34:23,394 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:34:23,394 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:34:23,395 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6d6f0e-010c-4ca7-ae98-5600ca3d2e90/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6d6f0e-010c-4ca7-ae98-5600ca3d2e90/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29824587617da9a02b15e9129afbb9cf5ee59d8d3dbb506aa4fe0ed84097e2f1 [2021-11-23 02:34:23,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:34:23,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:34:23,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:34:23,719 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:34:23,720 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:34:23,721 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6d6f0e-010c-4ca7-ae98-5600ca3d2e90/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i [2021-11-23 02:34:23,825 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6d6f0e-010c-4ca7-ae98-5600ca3d2e90/bin/utaipan-EQgc7hIp5V/data/30a380cf0/f59c5792b9464cd39bb054c809a226a8/FLAGbb47671b3 [2021-11-23 02:34:24,868 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:34:24,869 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6d6f0e-010c-4ca7-ae98-5600ca3d2e90/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i [2021-11-23 02:34:24,930 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6d6f0e-010c-4ca7-ae98-5600ca3d2e90/bin/utaipan-EQgc7hIp5V/data/30a380cf0/f59c5792b9464cd39bb054c809a226a8/FLAGbb47671b3 [2021-11-23 02:34:25,204 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6d6f0e-010c-4ca7-ae98-5600ca3d2e90/bin/utaipan-EQgc7hIp5V/data/30a380cf0/f59c5792b9464cd39bb054c809a226a8 [2021-11-23 02:34:25,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:34:25,209 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:34:25,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:34:25,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:34:25,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:34:25,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:34:25" (1/1) ... [2021-11-23 02:34:25,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b6fe8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:25, skipping insertion in model container [2021-11-23 02:34:25,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:34:25" (1/1) ... [2021-11-23 02:34:25,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:34:25,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:34:28,568 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6d6f0e-010c-4ca7-ae98-5600ca3d2e90/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i[314027,314040] [2021-11-23 02:34:28,996 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:34:29,085 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:34:29,697 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6d6f0e-010c-4ca7-ae98-5600ca3d2e90/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i[314027,314040] [2021-11-23 02:34:29,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:34:30,011 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:34:30,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:30 WrapperNode [2021-11-23 02:34:30,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:34:30,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:34:30,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:34:30,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:34:30,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:30" (1/1) ... [2021-11-23 02:34:30,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:30" (1/1) ... [2021-11-23 02:34:30,467 INFO L137 Inliner]: procedures = 451, calls = 4094, calls flagged for inlining = 167, calls inlined = 83, statements flattened = 4783 [2021-11-23 02:34:30,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:34:30,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:34:30,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:34:30,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:34:30,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:30" (1/1) ... [2021-11-23 02:34:30,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:30" (1/1) ... [2021-11-23 02:34:30,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:30" (1/1) ... [2021-11-23 02:34:30,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:30" (1/1) ... [2021-11-23 02:34:30,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:30" (1/1) ... [2021-11-23 02:34:30,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:30" (1/1) ... [2021-11-23 02:34:30,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:30" (1/1) ... [2021-11-23 02:34:30,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:34:30,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:34:30,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:34:30,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:34:30,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:30" (1/1) ... [2021-11-23 02:34:30,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:34:30,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6d6f0e-010c-4ca7-ae98-5600ca3d2e90/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:34:30,836 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6d6f0e-010c-4ca7-ae98-5600ca3d2e90/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:34:30,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6d6f0e-010c-4ca7-ae98-5600ca3d2e90/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:34:30,893 INFO L130 BoogieDeclarations]: Found specification of procedure smi_stats_proc_open [2021-11-23 02:34:30,893 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_stats_proc_open [2021-11-23 02:34:30,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:34:30,894 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:34:30,894 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-23 02:34:30,894 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-23 02:34:30,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:34:30,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:34:30,895 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~bool~0~TO~VOID [2021-11-23 02:34:30,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~bool~0~TO~VOID [2021-11-23 02:34:30,896 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_poll [2021-11-23 02:34:30,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_poll [2021-11-23 02:34:30,896 INFO L130 BoogieDeclarations]: Found specification of procedure handle_lan_get_msg_cmd [2021-11-23 02:34:30,896 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_lan_get_msg_cmd [2021-11-23 02:34:30,897 INFO L130 BoogieDeclarations]: Found specification of procedure handle_bmc_rsp [2021-11-23 02:34:30,897 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_bmc_rsp [2021-11-23 02:34:30,897 INFO L130 BoogieDeclarations]: Found specification of procedure __write_once_size [2021-11-23 02:34:30,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __write_once_size [2021-11-23 02:34:30,897 INFO L130 BoogieDeclarations]: Found specification of procedure format_lan_msg [2021-11-23 02:34:30,898 INFO L138 BoogieDeclarations]: Found implementation of procedure format_lan_msg [2021-11-23 02:34:30,898 INFO L130 BoogieDeclarations]: Found specification of procedure copy_event_into_recv_msg [2021-11-23 02:34:30,898 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_event_into_recv_msg [2021-11-23 02:34:30,898 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_panic_request_and_wait [2021-11-23 02:34:30,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_panic_request_and_wait [2021-11-23 02:34:30,899 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 02:34:30,899 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 02:34:30,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_cmd_rcvrs_mutex_of_ipmi_smi [2021-11-23 02:34:30,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_cmd_rcvrs_mutex_of_ipmi_smi [2021-11-23 02:34:30,900 INFO L130 BoogieDeclarations]: Found specification of procedure handle_oem_get_msg_cmd [2021-11-23 02:34:30,900 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_oem_get_msg_cmd [2021-11-23 02:34:30,900 INFO L130 BoogieDeclarations]: Found specification of procedure need_waiter [2021-11-23 02:34:30,900 INFO L138 BoogieDeclarations]: Found implementation of procedure need_waiter [2021-11-23 02:34:30,901 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-23 02:34:30,901 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 02:34:30,901 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 02:34:30,901 INFO L130 BoogieDeclarations]: Found specification of procedure smi_send [2021-11-23 02:34:30,902 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_send [2021-11-23 02:34:30,902 INFO L130 BoogieDeclarations]: Found specification of procedure smi_add_send_msg [2021-11-23 02:34:30,902 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_add_send_msg [2021-11-23 02:34:30,902 INFO L130 BoogieDeclarations]: Found specification of procedure intf_next_seq [2021-11-23 02:34:30,903 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_next_seq [2021-11-23 02:34:30,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:34:30,903 INFO L130 BoogieDeclarations]: Found specification of procedure PDE_DATA [2021-11-23 02:34:30,903 INFO L138 BoogieDeclarations]: Found implementation of procedure PDE_DATA [2021-11-23 02:34:30,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_cmd_rcvrs_mutex_of_ipmi_smi [2021-11-23 02:34:30,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_cmd_rcvrs_mutex_of_ipmi_smi [2021-11-23 02:34:30,904 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-23 02:34:30,904 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-23 02:34:30,904 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 02:34:30,905 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 02:34:30,905 INFO L130 BoogieDeclarations]: Found specification of procedure i_ipmi_request [2021-11-23 02:34:30,905 INFO L138 BoogieDeclarations]: Found implementation of procedure i_ipmi_request [2021-11-23 02:34:30,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:34:30,906 INFO L130 BoogieDeclarations]: Found specification of procedure free_smi_msg_list [2021-11-23 02:34:30,906 INFO L138 BoogieDeclarations]: Found implementation of procedure free_smi_msg_list [2021-11-23 02:34:30,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:34:30,906 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~ipmi_smi_t~0~X~$Pointer$~TO~VOID [2021-11-23 02:34:30,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~ipmi_smi_t~0~X~$Pointer$~TO~VOID [2021-11-23 02:34:30,907 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2021-11-23 02:34:30,907 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2021-11-23 02:34:30,907 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2021-11-23 02:34:30,908 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2021-11-23 02:34:30,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:34:30,908 INFO L130 BoogieDeclarations]: Found specification of procedure deliver_err_response [2021-11-23 02:34:30,908 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver_err_response [2021-11-23 02:34:30,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:34:30,909 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:34:30,909 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-23 02:34:30,909 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-23 02:34:30,909 INFO L130 BoogieDeclarations]: Found specification of procedure maintenance_mode_update [2021-11-23 02:34:30,910 INFO L138 BoogieDeclarations]: Found implementation of procedure maintenance_mode_update [2021-11-23 02:34:30,910 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-23 02:34:30,910 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-23 02:34:30,910 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-23 02:34:30,910 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-23 02:34:30,911 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2021-11-23 02:34:30,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2021-11-23 02:34:30,911 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2021-11-23 02:34:30,911 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2021-11-23 02:34:30,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-23 02:34:30,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-23 02:34:30,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:34:30,912 INFO L130 BoogieDeclarations]: Found specification of procedure smi_version_proc_open [2021-11-23 02:34:30,912 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_version_proc_open [2021-11-23 02:34:30,913 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2021-11-23 02:34:30,913 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2021-11-23 02:34:30,913 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-23 02:34:30,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-23 02:34:30,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:34:30,914 INFO L130 BoogieDeclarations]: Found specification of procedure send_channel_info_cmd [2021-11-23 02:34:30,914 INFO L138 BoogieDeclarations]: Found implementation of procedure send_channel_info_cmd [2021-11-23 02:34:30,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:34:30,915 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 02:34:30,915 INFO L130 BoogieDeclarations]: Found specification of procedure handle_one_recv_msg [2021-11-23 02:34:30,915 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_one_recv_msg [2021-11-23 02:34:30,915 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:34:30,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:34:30,916 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-23 02:34:30,916 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-23 02:34:30,916 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_smi_msg [2021-11-23 02:34:30,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_smi_msg [2021-11-23 02:34:30,917 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-23 02:34:30,917 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-23 02:34:30,917 INFO L130 BoogieDeclarations]: Found specification of procedure handle_new_recv_msgs [2021-11-23 02:34:30,917 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_new_recv_msgs [2021-11-23 02:34:30,918 INFO L130 BoogieDeclarations]: Found specification of procedure is_lan_addr [2021-11-23 02:34:30,918 INFO L138 BoogieDeclarations]: Found implementation of procedure is_lan_addr [2021-11-23 02:34:30,918 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 02:34:30,918 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 02:34:30,918 INFO L130 BoogieDeclarations]: Found specification of procedure intf_free [2021-11-23 02:34:30,919 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_free [2021-11-23 02:34:30,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:34:30,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:34:30,920 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2021-11-23 02:34:30,920 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-23 02:34:30,920 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-23 02:34:30,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:34:30,921 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_smi_msg_received [2021-11-23 02:34:30,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_smi_msg_received [2021-11-23 02:34:30,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:34:30,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:34:30,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:34:30,922 INFO L130 BoogieDeclarations]: Found specification of procedure intf_find_seq [2021-11-23 02:34:30,922 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_find_seq [2021-11-23 02:34:30,922 INFO L130 BoogieDeclarations]: Found specification of procedure handle_read_event_rsp [2021-11-23 02:34:30,923 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_read_event_rsp [2021-11-23 02:34:30,923 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2021-11-23 02:34:30,923 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2021-11-23 02:34:30,923 INFO L130 BoogieDeclarations]: Found specification of procedure handle_ipmb_get_msg_cmd [2021-11-23 02:34:30,923 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_ipmb_get_msg_cmd [2021-11-23 02:34:30,924 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 02:34:30,924 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 02:34:30,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 02:34:30,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 02:34:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 02:34:30,925 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 02:34:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:34:30,925 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:34:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_smi_msg [2021-11-23 02:34:30,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_smi_msg [2021-11-23 02:34:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-23 02:34:30,926 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-23 02:34:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2021-11-23 02:34:30,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2021-11-23 02:34:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:34:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 02:34:30,927 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 02:34:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure proc_mkdir [2021-11-23 02:34:30,928 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_mkdir [2021-11-23 02:34:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:34:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2021-11-23 02:34:30,928 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2021-11-23 02:34:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:34:30,929 INFO L130 BoogieDeclarations]: Found specification of procedure find_cmd_rcvr [2021-11-23 02:34:30,929 INFO L138 BoogieDeclarations]: Found implementation of procedure find_cmd_rcvr [2021-11-23 02:34:30,929 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-23 02:34:30,929 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-23 02:34:30,929 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_init_msghandler [2021-11-23 02:34:30,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_init_msghandler [2021-11-23 02:34:30,930 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-23 02:34:30,930 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-23 02:34:30,930 INFO L130 BoogieDeclarations]: Found specification of procedure clean_up_interface_data [2021-11-23 02:34:30,931 INFO L138 BoogieDeclarations]: Found implementation of procedure clean_up_interface_data [2021-11-23 02:34:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_recv_msg [2021-11-23 02:34:30,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_recv_msg [2021-11-23 02:34:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure handle_ipmb_get_msg_rsp [2021-11-23 02:34:30,931 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_ipmb_get_msg_rsp [2021-11-23 02:34:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2021-11-23 02:34:30,932 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2021-11-23 02:34:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_rcu [2021-11-23 02:34:30,932 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_rcu [2021-11-23 02:34:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2021-11-23 02:34:30,933 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2021-11-23 02:34:30,933 INFO L130 BoogieDeclarations]: Found specification of procedure smi_ipmb_proc_open [2021-11-23 02:34:30,933 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_ipmb_proc_open [2021-11-23 02:34:30,933 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:34:30,933 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:34:30,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:34:30,934 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2021-11-23 02:34:30,934 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2021-11-23 02:34:30,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:34:30,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:34:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_addr [2021-11-23 02:34:30,935 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_addr [2021-11-23 02:34:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure handle_lan_get_msg_rsp [2021-11-23 02:34:30,935 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_lan_get_msg_rsp [2021-11-23 02:34:30,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-23 02:34:30,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-23 02:34:30,937 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_bcast_addr [2021-11-23 02:34:30,938 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_bcast_addr [2021-11-23 02:34:30,938 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-23 02:34:30,938 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-23 02:34:30,938 INFO L130 BoogieDeclarations]: Found specification of procedure format_ipmb_msg [2021-11-23 02:34:30,938 INFO L138 BoogieDeclarations]: Found implementation of procedure format_ipmb_msg [2021-11-23 02:34:30,939 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-23 02:34:30,939 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-23 02:34:30,939 INFO L130 BoogieDeclarations]: Found specification of procedure free_recv_msg_list [2021-11-23 02:34:30,939 INFO L138 BoogieDeclarations]: Found implementation of procedure free_recv_msg_list [2021-11-23 02:34:30,940 INFO L130 BoogieDeclarations]: Found specification of procedure intf_err_seq [2021-11-23 02:34:30,940 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_err_seq [2021-11-23 02:34:30,940 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-23 02:34:30,940 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-23 02:34:30,940 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-23 02:34:30,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-23 02:34:30,941 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_timeout [2021-11-23 02:34:30,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_timeout [2021-11-23 02:34:30,941 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2021-11-23 02:34:30,941 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2021-11-23 02:34:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure smi_recv_tasklet [2021-11-23 02:34:30,942 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_recv_tasklet [2021-11-23 02:34:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure ipmb_checksum [2021-11-23 02:34:30,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmb_checksum [2021-11-23 02:34:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure deliver_response [2021-11-23 02:34:30,943 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver_response [2021-11-23 02:34:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2021-11-23 02:34:30,943 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2021-11-23 02:34:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:34:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-23 02:34:30,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-23 02:34:30,944 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_recv_msg [2021-11-23 02:34:30,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_recv_msg [2021-11-23 02:34:30,945 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-23 02:34:32,158 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:34:32,163 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:34:32,916 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:34:45,881 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:34:47,824 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:34:47,824 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:34:47,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:34:47 BoogieIcfgContainer [2021-11-23 02:34:47,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:34:47,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:34:47,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:34:47,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:34:47,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:34:25" (1/3) ... [2021-11-23 02:34:47,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aedccbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:34:47, skipping insertion in model container [2021-11-23 02:34:47,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:30" (2/3) ... [2021-11-23 02:34:47,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aedccbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:34:47, skipping insertion in model container [2021-11-23 02:34:47,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:34:47" (3/3) ... [2021-11-23 02:34:47,842 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i [2021-11-23 02:34:47,849 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:34:47,849 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:34:47,942 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:34:47,966 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:34:47,967 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:34:48,065 INFO L276 IsEmpty]: Start isEmpty. Operand has 1473 states, 896 states have (on average 1.3850446428571428) internal successors, (1241), 991 states have internal predecessors, (1241), 475 states have call successors, (475), 101 states have call predecessors, (475), 100 states have return successors, (457), 437 states have call predecessors, (457), 457 states have call successors, (457) [2021-11-23 02:34:48,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2021-11-23 02:34:48,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:34:48,117 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:34:48,118 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:34:48,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:34:48,124 INFO L85 PathProgramCache]: Analyzing trace with hash 783187336, now seen corresponding path program 1 times [2021-11-23 02:34:48,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:34:48,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761297089] [2021-11-23 02:34:48,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:34:48,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:34:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:34:49,598 INFO L134 CoverageAnalysis]: Checked inductivity of 7965 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7965 trivial. 0 not checked. [2021-11-23 02:34:49,599 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:34:49,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761297089] [2021-11-23 02:34:49,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761297089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:34:49,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:34:49,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:34:49,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816508768] [2021-11-23 02:34:49,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:34:49,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:34:49,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:34:49,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:34:49,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:34:49,655 INFO L87 Difference]: Start difference. First operand has 1473 states, 896 states have (on average 1.3850446428571428) internal successors, (1241), 991 states have internal predecessors, (1241), 475 states have call successors, (475), 101 states have call predecessors, (475), 100 states have return successors, (457), 437 states have call predecessors, (457), 457 states have call successors, (457) Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2021-11-23 02:34:51,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:34:53,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:34:53,768 INFO L93 Difference]: Finished difference Result 4132 states and 6232 transitions. [2021-11-23 02:34:53,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:34:53,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) Word has length 551 [2021-11-23 02:34:53,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:34:53,827 INFO L225 Difference]: With dead ends: 4132 [2021-11-23 02:34:53,828 INFO L226 Difference]: Without dead ends: 2725 [2021-11-23 02:34:53,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:34:53,848 INFO L933 BasicCegarLoop]: 2366 mSDtfsCounter, 1925 mSDsluCounter, 2118 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1925 SdHoareTripleChecker+Valid, 4320 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:34:53,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1925 Valid, 4320 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-23 02:34:53,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2725 states. [2021-11-23 02:34:54,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2725 to 2721. [2021-11-23 02:34:54,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 1693 states have (on average 1.3738924985233314) internal successors, (2326), 1833 states have internal predecessors, (2326), 834 states have call successors, (834), 194 states have call predecessors, (834), 193 states have return successors, (824), 784 states have call predecessors, (824), 824 states have call successors, (824) [2021-11-23 02:34:54,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 3984 transitions. [2021-11-23 02:34:54,212 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 3984 transitions. Word has length 551 [2021-11-23 02:34:54,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:34:54,225 INFO L470 AbstractCegarLoop]: Abstraction has 2721 states and 3984 transitions. [2021-11-23 02:34:54,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2021-11-23 02:34:54,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 3984 transitions. [2021-11-23 02:34:54,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2021-11-23 02:34:54,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:34:54,256 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:34:54,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:34:54,257 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:34:54,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:34:54,259 INFO L85 PathProgramCache]: Analyzing trace with hash 748791414, now seen corresponding path program 1 times [2021-11-23 02:34:54,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:34:54,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436644751] [2021-11-23 02:34:54,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:34:54,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:34:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:34:55,407 INFO L134 CoverageAnalysis]: Checked inductivity of 7965 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7965 trivial. 0 not checked. [2021-11-23 02:34:55,408 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:34:55,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436644751] [2021-11-23 02:34:55,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436644751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:34:55,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:34:55,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:34:55,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291404186] [2021-11-23 02:34:55,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:34:55,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:34:55,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:34:55,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:34:55,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:34:55,417 INFO L87 Difference]: Start difference. First operand 2721 states and 3984 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (55), 3 states have call predecessors, (55), 2 states have return successors, (54), 3 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-23 02:35:10,027 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:35:11,951 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:35:16,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:35:17,420 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:35:20,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:35:22,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:35:24,152 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:35:24,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:35:24,746 INFO L93 Difference]: Finished difference Result 7923 states and 11603 transitions. [2021-11-23 02:35:24,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:35:24,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (55), 3 states have call predecessors, (55), 2 states have return successors, (54), 3 states have call predecessors, (54), 2 states have call successors, (54) Word has length 558 [2021-11-23 02:35:24,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:35:24,801 INFO L225 Difference]: With dead ends: 7923 [2021-11-23 02:35:24,802 INFO L226 Difference]: Without dead ends: 5308 [2021-11-23 02:35:24,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:35:24,828 INFO L933 BasicCegarLoop]: 1565 mSDtfsCounter, 2967 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 4911 mSolverCounterSat, 1907 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3354 SdHoareTripleChecker+Valid, 2588 SdHoareTripleChecker+Invalid, 6823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1907 IncrementalHoareTripleChecker+Valid, 4911 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:35:24,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3354 Valid, 2588 Invalid, 6823 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1907 Valid, 4911 Invalid, 5 Unknown, 0 Unchecked, 28.6s Time] [2021-11-23 02:35:24,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5308 states. [2021-11-23 02:35:25,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5308 to 5287. [2021-11-23 02:35:25,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5287 states, 3306 states have (on average 1.3790078644888082) internal successors, (4559), 3577 states have internal predecessors, (4559), 1597 states have call successors, (1597), 383 states have call predecessors, (1597), 383 states have return successors, (1590), 1507 states have call predecessors, (1590), 1587 states have call successors, (1590) [2021-11-23 02:35:25,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5287 states to 5287 states and 7746 transitions. [2021-11-23 02:35:25,207 INFO L78 Accepts]: Start accepts. Automaton has 5287 states and 7746 transitions. Word has length 558 [2021-11-23 02:35:25,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:35:25,210 INFO L470 AbstractCegarLoop]: Abstraction has 5287 states and 7746 transitions. [2021-11-23 02:35:25,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (55), 3 states have call predecessors, (55), 2 states have return successors, (54), 3 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-23 02:35:25,211 INFO L276 IsEmpty]: Start isEmpty. Operand 5287 states and 7746 transitions. [2021-11-23 02:35:25,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2021-11-23 02:35:25,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:35:25,228 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:35:25,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:35:25,229 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:35:25,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:35:25,230 INFO L85 PathProgramCache]: Analyzing trace with hash 2082821007, now seen corresponding path program 1 times [2021-11-23 02:35:25,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:35:25,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634023907] [2021-11-23 02:35:25,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:35:25,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:35:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:35:25,984 INFO L134 CoverageAnalysis]: Checked inductivity of 7965 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7965 trivial. 0 not checked. [2021-11-23 02:35:25,984 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:35:25,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634023907] [2021-11-23 02:35:25,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634023907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:35:25,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:35:25,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:35:25,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512085987] [2021-11-23 02:35:25,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:35:25,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:35:25,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:35:25,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:35:25,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:35:25,990 INFO L87 Difference]: Start difference. First operand 5287 states and 7746 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2021-11-23 02:35:27,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:35:27,850 INFO L93 Difference]: Finished difference Result 9199 states and 13473 transitions. [2021-11-23 02:35:27,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:35:27,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) Word has length 559 [2021-11-23 02:35:27,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:35:27,903 INFO L225 Difference]: With dead ends: 9199 [2021-11-23 02:35:27,903 INFO L226 Difference]: Without dead ends: 4018 [2021-11-23 02:35:27,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:35:27,941 INFO L933 BasicCegarLoop]: 1949 mSDtfsCounter, 2119 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2119 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:35:27,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2119 Valid, 1949 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-23 02:35:27,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4018 states. [2021-11-23 02:35:28,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4018 to 4018. [2021-11-23 02:35:28,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4018 states, 2507 states have (on average 1.3749501396090946) internal successors, (3447), 2713 states have internal predecessors, (3447), 1220 states have call successors, (1220), 290 states have call predecessors, (1220), 290 states have return successors, (1213), 1150 states have call predecessors, (1213), 1210 states have call successors, (1213) [2021-11-23 02:35:28,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4018 states to 4018 states and 5880 transitions. [2021-11-23 02:35:28,303 INFO L78 Accepts]: Start accepts. Automaton has 4018 states and 5880 transitions. Word has length 559 [2021-11-23 02:35:28,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:35:28,305 INFO L470 AbstractCegarLoop]: Abstraction has 4018 states and 5880 transitions. [2021-11-23 02:35:28,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2021-11-23 02:35:28,305 INFO L276 IsEmpty]: Start isEmpty. Operand 4018 states and 5880 transitions. [2021-11-23 02:35:28,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2021-11-23 02:35:28,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:35:28,329 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:35:28,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:35:28,330 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:35:28,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:35:28,331 INFO L85 PathProgramCache]: Analyzing trace with hash -584307417, now seen corresponding path program 1 times [2021-11-23 02:35:28,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:35:28,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587436891] [2021-11-23 02:35:28,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:35:28,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:35:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:35:29,082 INFO L134 CoverageAnalysis]: Checked inductivity of 7969 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2021-11-23 02:35:29,082 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:35:29,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587436891] [2021-11-23 02:35:29,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587436891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:35:29,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:35:29,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:35:29,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101758179] [2021-11-23 02:35:29,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:35:29,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:35:29,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:35:29,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:35:29,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:35:29,086 INFO L87 Difference]: Start difference. First operand 4018 states and 5880 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-23 02:35:37,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:35:37,778 INFO L93 Difference]: Finished difference Result 15742 states and 23298 transitions. [2021-11-23 02:35:37,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:35:37,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 610 [2021-11-23 02:35:37,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:35:37,905 INFO L225 Difference]: With dead ends: 15742 [2021-11-23 02:35:37,906 INFO L226 Difference]: Without dead ends: 11830 [2021-11-23 02:35:37,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:35:37,939 INFO L933 BasicCegarLoop]: 2766 mSDtfsCounter, 4066 mSDsluCounter, 4405 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4066 SdHoareTripleChecker+Valid, 6766 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:35:37,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4066 Valid, 6766 Invalid, 1561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2021-11-23 02:35:37,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11830 states. [2021-11-23 02:35:38,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11830 to 11768. [2021-11-23 02:35:38,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11768 states, 7381 states have (on average 1.3786749762904755) internal successors, (10176), 7969 states have internal predecessors, (10176), 3524 states have call successors, (3524), 860 states have call predecessors, (3524), 862 states have return successors, (3784), 3338 states have call predecessors, (3784), 3514 states have call successors, (3784) [2021-11-23 02:35:38,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11768 states to 11768 states and 17484 transitions. [2021-11-23 02:35:38,856 INFO L78 Accepts]: Start accepts. Automaton has 11768 states and 17484 transitions. Word has length 610 [2021-11-23 02:35:38,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:35:38,858 INFO L470 AbstractCegarLoop]: Abstraction has 11768 states and 17484 transitions. [2021-11-23 02:35:38,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-23 02:35:38,860 INFO L276 IsEmpty]: Start isEmpty. Operand 11768 states and 17484 transitions. [2021-11-23 02:35:38,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2021-11-23 02:35:38,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:35:38,885 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:35:38,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:35:38,886 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:35:38,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:35:38,887 INFO L85 PathProgramCache]: Analyzing trace with hash 2118715650, now seen corresponding path program 1 times [2021-11-23 02:35:38,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:35:38,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71269694] [2021-11-23 02:35:38,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:35:38,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:35:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:35:39,755 INFO L134 CoverageAnalysis]: Checked inductivity of 7969 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2021-11-23 02:35:39,758 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:35:39,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71269694] [2021-11-23 02:35:39,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71269694] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:35:39,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:35:39,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:35:39,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145530675] [2021-11-23 02:35:39,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:35:39,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:35:39,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:35:39,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:35:39,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:35:39,763 INFO L87 Difference]: Start difference. First operand 11768 states and 17484 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-23 02:35:48,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:35:48,450 INFO L93 Difference]: Finished difference Result 46730 states and 70704 transitions. [2021-11-23 02:35:48,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:35:48,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 611 [2021-11-23 02:35:48,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:35:48,737 INFO L225 Difference]: With dead ends: 46730 [2021-11-23 02:35:48,737 INFO L226 Difference]: Without dead ends: 35068 [2021-11-23 02:35:48,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:35:48,823 INFO L933 BasicCegarLoop]: 2748 mSDtfsCounter, 5209 mSDsluCounter, 3258 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 804 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5209 SdHoareTripleChecker+Valid, 5678 SdHoareTripleChecker+Invalid, 2219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 804 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:35:48,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5209 Valid, 5678 Invalid, 2219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [804 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2021-11-23 02:35:48,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35068 states. [2021-11-23 02:35:51,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35068 to 35006. [2021-11-23 02:35:51,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35006 states, 22003 states have (on average 1.3792664636640457) internal successors, (30348), 23725 states have internal predecessors, (30348), 10424 states have call successors, (10424), 2570 states have call predecessors, (10424), 2578 states have return successors, (12499), 9902 states have call predecessors, (12499), 10414 states have call successors, (12499) [2021-11-23 02:35:51,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35006 states to 35006 states and 53271 transitions. [2021-11-23 02:35:51,695 INFO L78 Accepts]: Start accepts. Automaton has 35006 states and 53271 transitions. Word has length 611 [2021-11-23 02:35:51,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:35:51,697 INFO L470 AbstractCegarLoop]: Abstraction has 35006 states and 53271 transitions. [2021-11-23 02:35:51,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-23 02:35:51,698 INFO L276 IsEmpty]: Start isEmpty. Operand 35006 states and 53271 transitions. [2021-11-23 02:35:51,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2021-11-23 02:35:51,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:35:51,709 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:35:51,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:35:51,710 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:35:51,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:35:51,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1790283343, now seen corresponding path program 1 times [2021-11-23 02:35:51,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:35:51,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704143330] [2021-11-23 02:35:51,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:35:51,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:35:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:35:52,628 INFO L134 CoverageAnalysis]: Checked inductivity of 7969 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2021-11-23 02:35:52,629 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:35:52,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704143330] [2021-11-23 02:35:52,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704143330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:35:52,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:35:52,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:35:52,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875699909] [2021-11-23 02:35:52,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:35:52,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:35:52,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:35:52,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:35:52,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:35:52,633 INFO L87 Difference]: Start difference. First operand 35006 states and 53271 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-23 02:35:55,044 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:03,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:36:03,596 INFO L93 Difference]: Finished difference Result 139646 states and 218106 transitions. [2021-11-23 02:36:03,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:36:03,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 612 [2021-11-23 02:36:03,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:36:04,742 INFO L225 Difference]: With dead ends: 139646 [2021-11-23 02:36:04,744 INFO L226 Difference]: Without dead ends: 104746 [2021-11-23 02:36:04,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:36:04,946 INFO L933 BasicCegarLoop]: 2756 mSDtfsCounter, 5207 mSDsluCounter, 3258 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 804 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5207 SdHoareTripleChecker+Valid, 5686 SdHoareTripleChecker+Invalid, 2219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 804 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:36:04,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5207 Valid, 5686 Invalid, 2219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [804 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2021-11-23 02:36:05,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104746 states. [2021-11-23 02:36:11,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104746 to 104684. [2021-11-23 02:36:11,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104684 states, 65869 states have (on average 1.378827673108746) internal successors, (90822), 70957 states have internal predecessors, (90822), 31088 states have call successors, (31088), 7700 states have call predecessors, (31088), 7726 states have return successors, (42934), 29594 states have call predecessors, (42934), 31078 states have call successors, (42934) [2021-11-23 02:36:13,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104684 states to 104684 states and 164844 transitions. [2021-11-23 02:36:13,303 INFO L78 Accepts]: Start accepts. Automaton has 104684 states and 164844 transitions. Word has length 612 [2021-11-23 02:36:13,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:36:13,304 INFO L470 AbstractCegarLoop]: Abstraction has 104684 states and 164844 transitions. [2021-11-23 02:36:13,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-23 02:36:13,305 INFO L276 IsEmpty]: Start isEmpty. Operand 104684 states and 164844 transitions. [2021-11-23 02:36:13,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2021-11-23 02:36:13,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:36:13,315 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:36:13,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:36:13,316 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:36:13,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:36:13,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1976014954, now seen corresponding path program 1 times [2021-11-23 02:36:13,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:36:13,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590417032] [2021-11-23 02:36:13,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:13,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:36:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:36:13,913 INFO L134 CoverageAnalysis]: Checked inductivity of 7969 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2021-11-23 02:36:13,913 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:36:13,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590417032] [2021-11-23 02:36:13,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590417032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:36:13,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:36:13,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:36:13,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030675370] [2021-11-23 02:36:13,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:36:13,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:36:13,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:36:13,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:36:13,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:36:13,917 INFO L87 Difference]: Start difference. First operand 104684 states and 164844 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-23 02:36:33,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:36:33,003 INFO L93 Difference]: Finished difference Result 415960 states and 680207 transitions. [2021-11-23 02:36:33,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:36:33,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 613 [2021-11-23 02:36:33,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:36:35,376 INFO L225 Difference]: With dead ends: 415960 [2021-11-23 02:36:35,376 INFO L226 Difference]: Without dead ends: 311382 [2021-11-23 02:36:36,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:36:36,537 INFO L933 BasicCegarLoop]: 2744 mSDtfsCounter, 4063 mSDsluCounter, 5208 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4063 SdHoareTripleChecker+Valid, 7464 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:36:36,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4063 Valid, 7464 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1626 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-11-23 02:36:36,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311382 states.