./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-43_2a-drivers--scsi--fcoe--fcoe.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_3be9bb18-1d25-4372-92dd-6f1172e0988e/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3be9bb18-1d25-4372-92dd-6f1172e0988e/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_3be9bb18-1d25-4372-92dd-6f1172e0988e/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3be9bb18-1d25-4372-92dd-6f1172e0988e/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3be9bb18-1d25-4372-92dd-6f1172e0988e/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_3be9bb18-1d25-4372-92dd-6f1172e0988e/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 b09307eff68471b13f9f4af8ca37265160c175233f57a4afa3e4fdd6d6503a6b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:51:12,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:51:12,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:51:12,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:51:12,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:51:12,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:51:12,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:51:12,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:51:12,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:51:12,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:51:12,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:51:12,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:51:12,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:51:12,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:51:12,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:51:12,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:51:12,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:51:12,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:51:12,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:51:12,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:51:12,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:51:12,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:51:12,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:51:12,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:51:12,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:51:12,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:51:12,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:51:12,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:51:12,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:51:12,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:51:12,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:51:12,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:51:12,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:51:12,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:51:12,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:51:12,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:51:12,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:51:12,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:51:12,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:51:12,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:51:12,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:51:12,499 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3be9bb18-1d25-4372-92dd-6f1172e0988e/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:51:12,551 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:51:12,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:51:12,552 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:51:12,552 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:51:12,553 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:51:12,554 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:51:12,554 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:51:12,554 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:51:12,554 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:51:12,555 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:51:12,556 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:51:12,556 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:51:12,557 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:51:12,557 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:51:12,557 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:51:12,558 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:51:12,558 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:51:12,558 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:51:12,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:51:12,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:51:12,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:51:12,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:51:12,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:51:12,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:51:12,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:51:12,561 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:51:12,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:51:12,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:51:12,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:51:12,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:51:12,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:51:12,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:51:12,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:51:12,563 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:51:12,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:51:12,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:51:12,564 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:51:12,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:51:12,565 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_3be9bb18-1d25-4372-92dd-6f1172e0988e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3be9bb18-1d25-4372-92dd-6f1172e0988e/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b09307eff68471b13f9f4af8ca37265160c175233f57a4afa3e4fdd6d6503a6b [2021-11-23 02:51:12,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:51:12,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:51:12,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:51:12,953 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:51:12,954 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:51:12,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3be9bb18-1d25-4372-92dd-6f1172e0988e/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i [2021-11-23 02:51:13,043 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3be9bb18-1d25-4372-92dd-6f1172e0988e/bin/utaipan-EQgc7hIp5V/data/669e068f3/3ac527487f15484a9dae85fed440239d/FLAGb7486f606 [2021-11-23 02:51:14,438 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:51:14,439 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3be9bb18-1d25-4372-92dd-6f1172e0988e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i [2021-11-23 02:51:14,524 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3be9bb18-1d25-4372-92dd-6f1172e0988e/bin/utaipan-EQgc7hIp5V/data/669e068f3/3ac527487f15484a9dae85fed440239d/FLAGb7486f606 [2021-11-23 02:51:14,548 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3be9bb18-1d25-4372-92dd-6f1172e0988e/bin/utaipan-EQgc7hIp5V/data/669e068f3/3ac527487f15484a9dae85fed440239d [2021-11-23 02:51:14,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:51:14,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:51:14,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:51:14,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:51:14,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:51:14,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:51:14" (1/1) ... [2021-11-23 02:51:14,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e1d6bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:14, skipping insertion in model container [2021-11-23 02:51:14,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:51:14" (1/1) ... [2021-11-23 02:51:14,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:51:14,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:51:19,117 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_3be9bb18-1d25-4372-92dd-6f1172e0988e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i[416808,416821] [2021-11-23 02:51:19,204 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:51:19,245 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:51:19,971 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_3be9bb18-1d25-4372-92dd-6f1172e0988e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i[416808,416821] [2021-11-23 02:51:19,988 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:51:20,272 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:51:20,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:20 WrapperNode [2021-11-23 02:51:20,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:51:20,274 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:51:20,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:51:20,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:51:20,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:20" (1/1) ... [2021-11-23 02:51:20,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:20" (1/1) ... [2021-11-23 02:51:20,698 INFO L137 Inliner]: procedures = 426, calls = 2211, calls flagged for inlining = 204, calls inlined = 184, statements flattened = 6226 [2021-11-23 02:51:20,699 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:51:20,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:51:20,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:51:20,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:51:20,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:20" (1/1) ... [2021-11-23 02:51:20,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:20" (1/1) ... [2021-11-23 02:51:20,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:20" (1/1) ... [2021-11-23 02:51:20,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:20" (1/1) ... [2021-11-23 02:51:20,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:20" (1/1) ... [2021-11-23 02:51:21,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:20" (1/1) ... [2021-11-23 02:51:21,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:20" (1/1) ... [2021-11-23 02:51:21,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:51:21,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:51:21,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:51:21,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:51:21,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:20" (1/1) ... [2021-11-23 02:51:21,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:51:21,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3be9bb18-1d25-4372-92dd-6f1172e0988e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:51:21,273 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3be9bb18-1d25-4372-92dd-6f1172e0988e/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:51:21,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3be9bb18-1d25-4372-92dd-6f1172e0988e/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:51:21,339 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ddp_done [2021-11-23 02:51:21,339 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ddp_done [2021-11-23 02:51:21,339 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_get_wwn [2021-11-23 02:51:21,340 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_get_wwn [2021-11-23 02:51:21,340 INFO L130 BoogieDeclarations]: Found specification of procedure fc_lport_bsg_request [2021-11-23 02:51:21,340 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_lport_bsg_request [2021-11-23 02:51:21,340 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-23 02:51:21,340 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_hostlist_del [2021-11-23 02:51:21,341 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_hostlist_del [2021-11-23 02:51:21,341 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-11-23 02:51:21,341 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-11-23 02:51:21,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:51:21,341 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:51:21,342 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-11-23 02:51:21,342 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-11-23 02:51:21,342 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-23 02:51:21,342 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-23 02:51:21,342 INFO L130 BoogieDeclarations]: Found specification of procedure fc_frame_header_get [2021-11-23 02:51:21,343 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_frame_header_get [2021-11-23 02:51:21,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-23 02:51:21,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-23 02:51:21,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:51:21,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:51:21,344 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_netdev [2021-11-23 02:51:21,344 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_netdev [2021-11-23 02:51:21,344 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_recv_flogi [2021-11-23 02:51:21,344 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_recv_flogi [2021-11-23 02:51:21,344 INFO L130 BoogieDeclarations]: Found specification of procedure fc_vport_setlink [2021-11-23 02:51:21,345 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_vport_setlink [2021-11-23 02:51:21,345 INFO L130 BoogieDeclarations]: Found specification of procedure fc_eh_abort [2021-11-23 02:51:21,345 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_eh_abort [2021-11-23 02:51:21,345 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-11-23 02:51:21,345 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-11-23 02:51:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_dev_from_skb [2021-11-23 02:51:21,346 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_dev_from_skb [2021-11-23 02:51:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_4 [2021-11-23 02:51:21,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_4 [2021-11-23 02:51:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_percpu_thread_create [2021-11-23 02:51:21,347 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_percpu_thread_create [2021-11-23 02:51:21,347 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_device_priv [2021-11-23 02:51:21,347 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_device_priv [2021-11-23 02:51:21,347 INFO L130 BoogieDeclarations]: Found specification of procedure __preempt_count_sub [2021-11-23 02:51:21,347 INFO L138 BoogieDeclarations]: Found implementation of procedure __preempt_count_sub [2021-11-23 02:51:21,348 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_link_ok [2021-11-23 02:51:21,348 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_link_ok [2021-11-23 02:51:21,348 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_vport_destroy [2021-11-23 02:51:21,349 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_vport_destroy [2021-11-23 02:51:21,349 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_alloc [2021-11-23 02:51:21,349 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_alloc [2021-11-23 02:51:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure fc_get_host_port_state [2021-11-23 02:51:21,351 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_get_host_port_state [2021-11-23 02:51:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure fc_release_transport [2021-11-23 02:51:21,352 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_release_transport [2021-11-23 02:51:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_reset [2021-11-23 02:51:21,352 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_reset [2021-11-23 02:51:21,353 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-23 02:51:21,353 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-23 02:51:21,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 02:51:21,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 02:51:21,354 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_link_speed_update [2021-11-23 02:51:21,355 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_link_speed_update [2021-11-23 02:51:21,355 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_xmit [2021-11-23 02:51:21,355 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_xmit [2021-11-23 02:51:21,355 INFO L130 BoogieDeclarations]: Found specification of procedure fc_fabric_logoff [2021-11-23 02:51:21,355 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_fabric_logoff [2021-11-23 02:51:21,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:51:21,356 INFO L130 BoogieDeclarations]: Found specification of procedure fc_frame_payload_get [2021-11-23 02:51:21,356 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_frame_payload_get [2021-11-23 02:51:21,356 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-23 02:51:21,356 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-23 02:51:21,357 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_remove [2021-11-23 02:51:21,357 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_remove [2021-11-23 02:51:21,357 INFO L130 BoogieDeclarations]: Found specification of procedure fc_exch_mgr_alloc [2021-11-23 02:51:21,358 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_exch_mgr_alloc [2021-11-23 02:51:21,358 INFO L130 BoogieDeclarations]: Found specification of procedure is_fip_mode [2021-11-23 02:51:21,358 INFO L138 BoogieDeclarations]: Found implementation of procedure is_fip_mode [2021-11-23 02:51:21,359 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-23 02:51:21,359 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-23 02:51:21,359 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_check_wait_queue [2021-11-23 02:51:21,359 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_check_wait_queue [2021-11-23 02:51:21,359 INFO L130 BoogieDeclarations]: Found specification of procedure fc_fabric_login [2021-11-23 02:51:21,360 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_fabric_login [2021-11-23 02:51:21,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:51:21,360 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_maps_update_done [2021-11-23 02:51:21,361 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_maps_update_done [2021-11-23 02:51:21,361 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ddp_target [2021-11-23 02:51:21,361 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ddp_target [2021-11-23 02:51:21,362 INFO L130 BoogieDeclarations]: Found specification of procedure fc_set_rport_loss_tmo [2021-11-23 02:51:21,362 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_set_rport_loss_tmo [2021-11-23 02:51:21,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:51:21,363 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ddp_setup [2021-11-23 02:51:21,363 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ddp_setup [2021-11-23 02:51:21,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:51:21,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:51:21,365 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:51:21,365 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_wwn_from_mac [2021-11-23 02:51:21,366 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_wwn_from_mac [2021-11-23 02:51:21,366 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-23 02:51:21,366 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-23 02:51:21,367 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-23 02:51:21,367 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-23 02:51:21,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-23 02:51:21,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-23 02:51:21,367 INFO L130 BoogieDeclarations]: Found specification of procedure fc_attach_transport [2021-11-23 02:51:21,367 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_attach_transport [2021-11-23 02:51:21,368 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_hostlist_lookup_port [2021-11-23 02:51:21,368 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_hostlist_lookup_port [2021-11-23 02:51:21,368 INFO L130 BoogieDeclarations]: Found specification of procedure dcb_getapp [2021-11-23 02:51:21,369 INFO L138 BoogieDeclarations]: Found implementation of procedure dcb_getapp [2021-11-23 02:51:21,369 INFO L130 BoogieDeclarations]: Found specification of procedure fc_rport_terminate_io [2021-11-23 02:51:21,370 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_rport_terminate_io [2021-11-23 02:51:21,370 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2021-11-23 02:51:21,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2021-11-23 02:51:21,374 INFO L130 BoogieDeclarations]: Found specification of procedure _fcoe_create [2021-11-23 02:51:21,374 INFO L138 BoogieDeclarations]: Found implementation of procedure _fcoe_create [2021-11-23 02:51:21,374 INFO L130 BoogieDeclarations]: Found specification of procedure fc_exch_mgr_free [2021-11-23 02:51:21,376 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_exch_mgr_free [2021-11-23 02:51:21,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-23 02:51:21,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-23 02:51:21,378 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2021-11-23 02:51:21,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2021-11-23 02:51:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:51:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure dcb_ieee_getapp_mask [2021-11-23 02:51:21,387 INFO L138 BoogieDeclarations]: Found implementation of procedure dcb_ieee_getapp_mask [2021-11-23 02:51:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:51:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure fc_set_mfs [2021-11-23 02:51:21,388 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_set_mfs [2021-11-23 02:51:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:51:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 02:51:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2021-11-23 02:51:21,388 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2021-11-23 02:51:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:51:21,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:51:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_link_up [2021-11-23 02:51:21,388 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_link_up [2021-11-23 02:51:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure lport_priv [2021-11-23 02:51:21,389 INFO L138 BoogieDeclarations]: Found implementation of procedure lport_priv [2021-11-23 02:51:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_netdev_features_change [2021-11-23 02:51:21,389 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_netdev_features_change [2021-11-23 02:51:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_disable [2021-11-23 02:51:21,389 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_disable [2021-11-23 02:51:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 02:51:21,389 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 02:51:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure fc_vport_set_state [2021-11-23 02:51:21,389 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_vport_set_state [2021-11-23 02:51:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_clean_pending_queue [2021-11-23 02:51:21,389 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_clean_pending_queue [2021-11-23 02:51:21,390 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_net [2021-11-23 02:51:21,390 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_net [2021-11-23 02:51:21,390 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_enabled [2021-11-23 02:51:21,390 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_enabled [2021-11-23 02:51:21,390 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_link_down [2021-11-23 02:51:21,390 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_link_down [2021-11-23 02:51:21,390 INFO L130 BoogieDeclarations]: Found specification of procedure shost_priv [2021-11-23 02:51:21,390 INFO L138 BoogieDeclarations]: Found implementation of procedure shost_priv [2021-11-23 02:51:21,390 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-23 02:51:21,390 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-23 02:51:21,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:51:21,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:51:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure eth_hdr [2021-11-23 02:51:21,391 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_hdr [2021-11-23 02:51:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-23 02:51:21,391 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-23 02:51:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-23 02:51:21,391 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-23 02:51:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure fc_frame_payload_op [2021-11-23 02:51:21,391 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_frame_payload_op [2021-11-23 02:51:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_get_lesb [2021-11-23 02:51:21,392 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_get_lesb [2021-11-23 02:51:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:51:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:51:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:51:21,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:51:21,393 INFO L130 BoogieDeclarations]: Found specification of procedure fc_elsct_send [2021-11-23 02:51:21,393 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_elsct_send [2021-11-23 02:51:21,393 INFO L130 BoogieDeclarations]: Found specification of procedure vlan_dev_vlan_id [2021-11-23 02:51:21,393 INFO L138 BoogieDeclarations]: Found implementation of procedure vlan_dev_vlan_id [2021-11-23 02:51:21,393 INFO L130 BoogieDeclarations]: Found specification of procedure fc_queuecommand [2021-11-23 02:51:21,393 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_queuecommand [2021-11-23 02:51:21,394 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-23 02:51:21,394 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-23 02:51:21,394 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-23 02:51:21,394 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-23 02:51:21,394 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-23 02:51:21,394 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-11-23 02:51:21,395 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-11-23 02:51:21,395 INFO L130 BoogieDeclarations]: Found specification of procedure fc_get_host_speed [2021-11-23 02:51:21,395 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_get_host_speed [2021-11-23 02:51:21,395 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_head_init [2021-11-23 02:51:21,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_head_init [2021-11-23 02:51:21,395 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_create [2021-11-23 02:51:21,396 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_create [2021-11-23 02:51:21,396 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 02:51:21,396 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 02:51:21,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 02:51:21,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 02:51:21,397 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_destroy [2021-11-23 02:51:21,397 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_destroy [2021-11-23 02:51:21,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:51:21,397 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:51:21,397 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:51:21,397 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:51:21,398 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_priv [2021-11-23 02:51:21,398 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_priv [2021-11-23 02:51:21,398 INFO L130 BoogieDeclarations]: Found specification of procedure dev_uc_del [2021-11-23 02:51:21,398 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_uc_del [2021-11-23 02:51:21,398 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_destroy [2021-11-23 02:51:21,398 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_destroy [2021-11-23 02:51:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-23 02:51:21,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-23 02:51:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2021-11-23 02:51:21,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2021-11-23 02:51:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure fc_eh_device_reset [2021-11-23 02:51:21,400 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_eh_device_reset [2021-11-23 02:51:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:51:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 02:51:21,400 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 02:51:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure fc_set_wwpn [2021-11-23 02:51:21,400 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_set_wwpn [2021-11-23 02:51:21,401 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2021-11-23 02:51:21,401 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2021-11-23 02:51:21,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:51:21,401 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-11-23 02:51:21,401 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-11-23 02:51:21,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-11-23 02:51:21,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-11-23 02:51:21,402 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2021-11-23 02:51:21,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2021-11-23 02:51:21,402 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_percpu_thread_destroy [2021-11-23 02:51:21,402 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_percpu_thread_destroy [2021-11-23 02:51:21,402 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2021-11-23 02:51:21,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2021-11-23 02:51:21,403 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2021-11-23 02:51:21,403 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2021-11-23 02:51:21,403 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_cleanup [2021-11-23 02:51:21,403 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_cleanup [2021-11-23 02:51:21,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:51:21,404 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u16~0~X~$Pointer$~X~int~TO~int [2021-11-23 02:51:21,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u16~0~X~$Pointer$~X~int~TO~int [2021-11-23 02:51:21,404 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-23 02:51:21,404 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-23 02:51:21,404 INFO L130 BoogieDeclarations]: Found specification of procedure dev_add_pack [2021-11-23 02:51:21,404 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_add_pack [2021-11-23 02:51:21,405 INFO L130 BoogieDeclarations]: Found specification of procedure fc_set_wwnn [2021-11-23 02:51:21,405 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_set_wwnn [2021-11-23 02:51:21,405 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-11-23 02:51:21,405 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-11-23 02:51:21,405 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-23 02:51:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-23 02:51:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure fc_get_host_stats [2021-11-23 02:51:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_get_host_stats [2021-11-23 02:51:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_46 [2021-11-23 02:51:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_46 [2021-11-23 02:51:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_enable [2021-11-23 02:51:21,407 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_enable [2021-11-23 02:51:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure ntoh24 [2021-11-23 02:51:21,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ntoh24 [2021-11-23 02:51:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure dev_uc_add [2021-11-23 02:51:21,407 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_uc_add [2021-11-23 02:51:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-11-23 02:51:21,408 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-11-23 02:51:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u16~0~TO~int [2021-11-23 02:51:21,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u16~0~TO~int [2021-11-23 02:51:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_if_destroy [2021-11-23 02:51:21,408 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_if_destroy [2021-11-23 02:51:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure dev_put [2021-11-23 02:51:21,409 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_put [2021-11-23 02:51:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_setup [2021-11-23 02:51:21,409 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_setup [2021-11-23 02:51:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_2 [2021-11-23 02:51:21,409 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_2 [2021-11-23 02:51:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:51:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_if_create [2021-11-23 02:51:21,410 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_if_create [2021-11-23 02:51:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_device_delete [2021-11-23 02:51:21,410 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_device_delete [2021-11-23 02:51:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:51:21,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:51:21,411 INFO L130 BoogieDeclarations]: Found specification of procedure dev_mc_add [2021-11-23 02:51:21,411 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_mc_add [2021-11-23 02:51:21,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-23 02:51:21,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-23 02:51:21,411 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2021-11-23 02:51:21,412 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2021-11-23 02:51:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-23 02:51:21,412 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-23 02:51:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure __preempt_count_add [2021-11-23 02:51:21,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __preempt_count_add [2021-11-23 02:51:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_port_send [2021-11-23 02:51:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_port_send [2021-11-23 02:51:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure fc_eh_host_reset [2021-11-23 02:51:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_eh_host_reset [2021-11-23 02:51:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_destroy_work [2021-11-23 02:51:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_destroy_work [2021-11-23 02:51:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-11-23 02:51:21,414 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-11-23 02:51:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_check [2021-11-23 02:51:21,414 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_check [2021-11-23 02:51:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2021-11-23 02:51:21,414 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2021-11-23 02:51:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure fc_slave_alloc [2021-11-23 02:51:21,415 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_slave_alloc [2021-11-23 02:51:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-23 02:51:21,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ffs [2021-11-23 02:51:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_elsct_send [2021-11-23 02:51:21,415 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_elsct_send [2021-11-23 02:51:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure vlan_dev_real_dev [2021-11-23 02:51:21,416 INFO L138 BoogieDeclarations]: Found implementation of procedure vlan_dev_real_dev [2021-11-23 02:51:21,416 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_maps_update_begin [2021-11-23 02:51:21,416 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_maps_update_begin [2021-11-23 02:51:21,416 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-11-23 02:51:21,416 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-11-23 02:51:21,416 INFO L130 BoogieDeclarations]: Found specification of procedure dev_mc_del [2021-11-23 02:51:21,417 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_mc_del [2021-11-23 02:51:21,417 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_remove_pack [2021-11-23 02:51:21,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_remove_pack [2021-11-23 02:51:21,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:51:21,417 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-11-23 02:51:21,417 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-11-23 02:51:22,671 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:51:22,677 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:51:23,417 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:51:30,339 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:51:33,408 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:51:33,408 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:51:33,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:51:33 BoogieIcfgContainer [2021-11-23 02:51:33,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:51:33,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:51:33,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:51:33,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:51:33,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:51:14" (1/3) ... [2021-11-23 02:51:33,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74514589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:51:33, skipping insertion in model container [2021-11-23 02:51:33,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:20" (2/3) ... [2021-11-23 02:51:33,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74514589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:51:33, skipping insertion in model container [2021-11-23 02:51:33,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:51:33" (3/3) ... [2021-11-23 02:51:33,427 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i [2021-11-23 02:51:33,439 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:51:33,440 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:51:33,531 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:51:33,554 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 02:51:33,554 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:51:33,617 INFO L276 IsEmpty]: Start isEmpty. Operand has 1815 states, 1092 states have (on average 1.347985347985348) internal successors, (1472), 1151 states have internal predecessors, (1472), 572 states have call successors, (572), 150 states have call predecessors, (572), 149 states have return successors, (559), 549 states have call predecessors, (559), 559 states have call successors, (559) [2021-11-23 02:51:33,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2021-11-23 02:51:33,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:51:33,735 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:51:33,736 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:51:33,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:51:33,742 INFO L85 PathProgramCache]: Analyzing trace with hash -445108194, now seen corresponding path program 1 times [2021-11-23 02:51:33,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:51:33,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212565572] [2021-11-23 02:51:33,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:51:33,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:51:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:51:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1753 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1753 trivial. 0 not checked. [2021-11-23 02:51:35,295 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:51:35,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212565572] [2021-11-23 02:51:35,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212565572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:51:35,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:51:35,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 02:51:35,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575083294] [2021-11-23 02:51:35,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:51:35,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:51:35,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:51:35,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:51:35,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:51:35,358 INFO L87 Difference]: Start difference. First operand has 1815 states, 1092 states have (on average 1.347985347985348) internal successors, (1472), 1151 states have internal predecessors, (1472), 572 states have call successors, (572), 150 states have call predecessors, (572), 149 states have return successors, (559), 549 states have call predecessors, (559), 559 states have call successors, (559) Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 4 states have call successors, (55), 4 states have call predecessors, (55), 3 states have return successors, (51), 5 states have call predecessors, (51), 4 states have call successors, (51) [2021-11-23 02:51:37,438 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:51:50,742 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:51:52,850 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:51:54,964 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:52:00,276 WARN L534 Checker$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 02:52:02,379 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:52:04,944 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:52:21,583 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 02:52:22,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:52:22,297 INFO L93 Difference]: Finished difference Result 6897 states and 10140 transitions. [2021-11-23 02:52:22,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 02:52:22,301 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 4 states have call successors, (55), 4 states have call predecessors, (55), 3 states have return successors, (51), 5 states have call predecessors, (51), 4 states have call successors, (51) Word has length 408 [2021-11-23 02:52:22,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:52:22,391 INFO L225 Difference]: With dead ends: 6897 [2021-11-23 02:52:22,392 INFO L226 Difference]: Without dead ends: 5103 [2021-11-23 02:52:22,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-11-23 02:52:22,418 INFO L933 BasicCegarLoop]: 2316 mSDtfsCounter, 5277 mSDsluCounter, 6177 mSDsCounter, 0 mSdLazyCounter, 15157 mSolverCounterSat, 4637 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5866 SdHoareTripleChecker+Valid, 7764 SdHoareTripleChecker+Invalid, 19801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4637 IncrementalHoareTripleChecker+Valid, 15157 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:52:22,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5866 Valid, 7764 Invalid, 19801 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4637 Valid, 15157 Invalid, 7 Unknown, 0 Unchecked, 45.6s Time] [2021-11-23 02:52:22,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5103 states. [2021-11-23 02:52:22,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5103 to 5088. [2021-11-23 02:52:22,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5088 states, 3040 states have (on average 1.3177631578947369) internal successors, (4006), 3169 states have internal predecessors, (4006), 1602 states have call successors, (1602), 416 states have call predecessors, (1602), 445 states have return successors, (1789), 1605 states have call predecessors, (1789), 1599 states have call successors, (1789) [2021-11-23 02:52:22,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5088 states to 5088 states and 7397 transitions. [2021-11-23 02:52:22,939 INFO L78 Accepts]: Start accepts. Automaton has 5088 states and 7397 transitions. Word has length 408 [2021-11-23 02:52:22,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:52:22,942 INFO L470 AbstractCegarLoop]: Abstraction has 5088 states and 7397 transitions. [2021-11-23 02:52:22,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 4 states have call successors, (55), 4 states have call predecessors, (55), 3 states have return successors, (51), 5 states have call predecessors, (51), 4 states have call successors, (51) [2021-11-23 02:52:22,943 INFO L276 IsEmpty]: Start isEmpty. Operand 5088 states and 7397 transitions. [2021-11-23 02:52:22,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2021-11-23 02:52:22,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:52:22,972 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:52:22,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:52:22,973 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:52:22,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:52:22,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1799025206, now seen corresponding path program 1 times [2021-11-23 02:52:22,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:52:22,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304955898] [2021-11-23 02:52:22,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:52:22,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:52:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:23,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1755 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2021-11-23 02:52:23,704 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:52:23,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304955898] [2021-11-23 02:52:23,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304955898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:23,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:52:23,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:52:23,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334066108] [2021-11-23 02:52:23,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:23,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:52:23,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:23,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:52:23,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:52:23,711 INFO L87 Difference]: Start difference. First operand 5088 states and 7397 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-23 02:52:25,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:52:30,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:52:30,533 INFO L93 Difference]: Finished difference Result 14950 states and 21700 transitions. [2021-11-23 02:52:30,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:52:30,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 391 [2021-11-23 02:52:30,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:52:30,651 INFO L225 Difference]: With dead ends: 14950 [2021-11-23 02:52:30,651 INFO L226 Difference]: Without dead ends: 9927 [2021-11-23 02:52:30,692 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 02:52:30,694 INFO L933 BasicCegarLoop]: 2779 mSDtfsCounter, 2316 mSDsluCounter, 2526 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2316 SdHoareTripleChecker+Valid, 5025 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:52:30,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2316 Valid, 5025 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 603 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2021-11-23 02:52:30,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9927 states. [2021-11-23 02:52:31,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9927 to 9922. [2021-11-23 02:52:31,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9922 states, 5924 states have (on average 1.3160027008777853) internal successors, (7796), 6180 states have internal predecessors, (7796), 3112 states have call successors, (3112), 826 states have call predecessors, (3112), 885 states have return successors, (3484), 3119 states have call predecessors, (3484), 3107 states have call successors, (3484) [2021-11-23 02:52:31,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9922 states to 9922 states and 14392 transitions. [2021-11-23 02:52:31,655 INFO L78 Accepts]: Start accepts. Automaton has 9922 states and 14392 transitions. Word has length 391 [2021-11-23 02:52:31,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:52:31,657 INFO L470 AbstractCegarLoop]: Abstraction has 9922 states and 14392 transitions. [2021-11-23 02:52:31,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-23 02:52:31,658 INFO L276 IsEmpty]: Start isEmpty. Operand 9922 states and 14392 transitions. [2021-11-23 02:52:31,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2021-11-23 02:52:31,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:52:31,693 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:52:31,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:52:31,694 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:52:31,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:52:31,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1321521337, now seen corresponding path program 1 times [2021-11-23 02:52:31,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:52:31,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560758180] [2021-11-23 02:52:31,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:52:31,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:52:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:32,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1753 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1753 trivial. 0 not checked. [2021-11-23 02:52:32,444 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:52:32,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560758180] [2021-11-23 02:52:32,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560758180] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:32,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:52:32,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 02:52:32,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925032940] [2021-11-23 02:52:32,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:32,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:52:32,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:32,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:52:32,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:52:32,450 INFO L87 Difference]: Start difference. First operand 9922 states and 14392 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 4 states have call successors, (55), 4 states have call predecessors, (55), 3 states have return successors, (51), 5 states have call predecessors, (51), 4 states have call successors, (51) [2021-11-23 02:52:33,698 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:52:35,781 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:52:37,876 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:52:39,922 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:52:42,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:52:53,786 WARN L534 Checker$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 02:52:55,889 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:52:57,992 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:53:02,459 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:53:04,585 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:53:06,694 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:53:08,805 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:53:10,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:53:32,772 WARN L534 Checker$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 02:53:34,875 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:53:36,995 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:53:39,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:53:40,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:53:40,182 INFO L93 Difference]: Finished difference Result 26372 states and 42489 transitions. [2021-11-23 02:53:40,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 02:53:40,183 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 4 states have call successors, (55), 4 states have call predecessors, (55), 3 states have return successors, (51), 5 states have call predecessors, (51), 4 states have call successors, (51) Word has length 410 [2021-11-23 02:53:40,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:53:40,391 INFO L225 Difference]: With dead ends: 26372 [2021-11-23 02:53:40,392 INFO L226 Difference]: Without dead ends: 16515 [2021-11-23 02:53:40,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-11-23 02:53:40,482 INFO L933 BasicCegarLoop]: 2671 mSDtfsCounter, 4664 mSDsluCounter, 7233 mSDsCounter, 0 mSdLazyCounter, 16470 mSolverCounterSat, 4227 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5279 SdHoareTripleChecker+Valid, 8955 SdHoareTripleChecker+Invalid, 20712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4227 IncrementalHoareTripleChecker+Valid, 16470 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:53:40,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5279 Valid, 8955 Invalid, 20712 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4227 Valid, 16470 Invalid, 15 Unknown, 0 Unchecked, 66.4s Time] [2021-11-23 02:53:40,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16515 states. [2021-11-23 02:53:41,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16515 to 16399. [2021-11-23 02:53:41,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16399 states, 9597 states have (on average 1.3016567677399187) internal successors, (12492), 10087 states have internal predecessors, (12492), 5248 states have call successors, (5248), 1318 states have call predecessors, (5248), 1553 states have return successors, (8816), 5429 states have call predecessors, (8816), 5243 states have call successors, (8816) [2021-11-23 02:53:41,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16399 states to 16399 states and 26556 transitions. [2021-11-23 02:53:41,814 INFO L78 Accepts]: Start accepts. Automaton has 16399 states and 26556 transitions. Word has length 410 [2021-11-23 02:53:41,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:53:41,816 INFO L470 AbstractCegarLoop]: Abstraction has 16399 states and 26556 transitions. [2021-11-23 02:53:41,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 4 states have call successors, (55), 4 states have call predecessors, (55), 3 states have return successors, (51), 5 states have call predecessors, (51), 4 states have call successors, (51) [2021-11-23 02:53:41,818 INFO L276 IsEmpty]: Start isEmpty. Operand 16399 states and 26556 transitions. [2021-11-23 02:53:41,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2021-11-23 02:53:41,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:53:41,969 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:53:41,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:53:41,969 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:53:41,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:53:41,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1293808162, now seen corresponding path program 1 times [2021-11-23 02:53:41,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:53:41,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740865119] [2021-11-23 02:53:41,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:53:41,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:53:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:53:42,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1753 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1753 trivial. 0 not checked. [2021-11-23 02:53:42,602 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:53:42,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740865119] [2021-11-23 02:53:42,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740865119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:53:42,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:53:42,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 02:53:42,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284744273] [2021-11-23 02:53:42,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:53:42,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:53:42,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:53:42,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:53:42,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:53:42,605 INFO L87 Difference]: Start difference. First operand 16399 states and 26556 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 4 states have call successors, (55), 4 states have call predecessors, (55), 3 states have return successors, (51), 5 states have call predecessors, (51), 4 states have call successors, (51) [2021-11-23 02:53:44,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:53:54,372 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:53:56,478 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:53:58,600 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:54:01,975 WARN L534 Checker$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 02:54:04,096 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:54:24,343 WARN L534 Checker$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 02:54:26,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:54:27,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:54:27,637 INFO L93 Difference]: Finished difference Result 32742 states and 53309 transitions. [2021-11-23 02:54:27,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 02:54:27,648 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 4 states have call successors, (55), 4 states have call predecessors, (55), 3 states have return successors, (51), 5 states have call predecessors, (51), 4 states have call successors, (51) Word has length 411 [2021-11-23 02:54:27,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:54:27,764 INFO L225 Difference]: With dead ends: 32742 [2021-11-23 02:54:27,765 INFO L226 Difference]: Without dead ends: 16397 [2021-11-23 02:54:27,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-11-23 02:54:27,848 INFO L933 BasicCegarLoop]: 2355 mSDtfsCounter, 4852 mSDsluCounter, 6354 mSDsCounter, 0 mSdLazyCounter, 15375 mSolverCounterSat, 4288 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5439 SdHoareTripleChecker+Valid, 7942 SdHoareTripleChecker+Invalid, 19671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4288 IncrementalHoareTripleChecker+Valid, 15375 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:54:27,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5439 Valid, 7942 Invalid, 19671 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4288 Valid, 15375 Invalid, 8 Unknown, 0 Unchecked, 43.7s Time] [2021-11-23 02:54:27,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16397 states. [2021-11-23 02:54:28,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16397 to 16281. [2021-11-23 02:54:28,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16281 states, 9537 states have (on average 1.3016671909405473) internal successors, (12414), 10017 states have internal predecessors, (12414), 5198 states have call successors, (5198), 1310 states have call predecessors, (5198), 1545 states have return successors, (8722), 5385 states have call predecessors, (8722), 5195 states have call successors, (8722) [2021-11-23 02:54:28,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16281 states to 16281 states and 26334 transitions. [2021-11-23 02:54:28,963 INFO L78 Accepts]: Start accepts. Automaton has 16281 states and 26334 transitions. Word has length 411 [2021-11-23 02:54:28,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:54:28,966 INFO L470 AbstractCegarLoop]: Abstraction has 16281 states and 26334 transitions. [2021-11-23 02:54:28,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 4 states have call successors, (55), 4 states have call predecessors, (55), 3 states have return successors, (51), 5 states have call predecessors, (51), 4 states have call successors, (51) [2021-11-23 02:54:28,966 INFO L276 IsEmpty]: Start isEmpty. Operand 16281 states and 26334 transitions. [2021-11-23 02:54:28,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2021-11-23 02:54:28,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:54:28,994 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:28,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:54:28,995 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:54:28,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:54:28,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1535235864, now seen corresponding path program 1 times [2021-11-23 02:54:28,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:54:28,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252189589] [2021-11-23 02:54:28,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:28,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:54:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:29,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1761 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1761 trivial. 0 not checked. [2021-11-23 02:54:29,537 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:54:29,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252189589] [2021-11-23 02:54:29,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252189589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:54:29,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:54:29,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:54:29,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308439385] [2021-11-23 02:54:29,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:54:29,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:54:29,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:54:29,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:54:29,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:54:29,541 INFO L87 Difference]: Start difference. First operand 16281 states and 26334 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-23 02:54:30,907 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 02:54:34,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:54:34,686 INFO L93 Difference]: Finished difference Result 47690 states and 77274 transitions. [2021-11-23 02:54:34,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:54:34,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 445 [2021-11-23 02:54:34,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:54:34,884 INFO L225 Difference]: With dead ends: 47690 [2021-11-23 02:54:34,885 INFO L226 Difference]: Without dead ends: 31487 [2021-11-23 02:54:34,955 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 02:54:34,956 INFO L933 BasicCegarLoop]: 2884 mSDtfsCounter, 2505 mSDsluCounter, 2450 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2505 SdHoareTripleChecker+Valid, 5057 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:54:34,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2505 Valid, 5057 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-23 02:54:34,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31487 states. [2021-11-23 02:54:37,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31487 to 31480. [2021-11-23 02:54:37,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31480 states, 18429 states have (on average 1.3014270985946064) internal successors, (23984), 19375 states have internal predecessors, (23984), 10022 states have call successors, (10022), 2567 states have call predecessors, (10022), 3028 states have return successors, (17031), 10387 states have call predecessors, (17031), 10017 states have call successors, (17031) [2021-11-23 02:54:37,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31480 states to 31480 states and 51037 transitions. [2021-11-23 02:54:37,529 INFO L78 Accepts]: Start accepts. Automaton has 31480 states and 51037 transitions. Word has length 445 [2021-11-23 02:54:37,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:54:37,530 INFO L470 AbstractCegarLoop]: Abstraction has 31480 states and 51037 transitions. [2021-11-23 02:54:37,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-23 02:54:37,531 INFO L276 IsEmpty]: Start isEmpty. Operand 31480 states and 51037 transitions. [2021-11-23 02:54:37,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2021-11-23 02:54:37,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:54:37,552 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:54:37,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:54:37,552 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:54:37,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:54:37,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1482828046, now seen corresponding path program 1 times [2021-11-23 02:54:37,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:54:37,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309104190] [2021-11-23 02:54:37,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:37,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:54:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:37,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1758 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2021-11-23 02:54:37,956 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:54:37,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309104190] [2021-11-23 02:54:37,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309104190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:54:37,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:54:37,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:54:37,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702325178] [2021-11-23 02:54:37,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:54:37,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:54:37,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:54:37,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:54:37,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:54:37,960 INFO L87 Difference]: Start difference. First operand 31480 states and 51037 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-23 02:54:40,010 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:54:46,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:54:46,087 INFO L93 Difference]: Finished difference Result 93863 states and 152193 transitions. [2021-11-23 02:54:46,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:54:46,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 445 [2021-11-23 02:54:46,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:54:46,556 INFO L225 Difference]: With dead ends: 93863 [2021-11-23 02:54:46,557 INFO L226 Difference]: Without dead ends: 62461 [2021-11-23 02:54:46,920 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 02:54:46,923 INFO L933 BasicCegarLoop]: 2955 mSDtfsCounter, 2372 mSDsluCounter, 2556 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2372 SdHoareTripleChecker+Valid, 5232 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:54:46,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2372 Valid, 5232 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 590 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2021-11-23 02:54:46,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62461 states. [2021-11-23 02:54:50,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62461 to 62456. [2021-11-23 02:54:50,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62456 states, 36512 states have (on average 1.2993536371603855) internal successors, (47442), 38378 states have internal predecessors, (47442), 19895 states have call successors, (19895), 5125 states have call predecessors, (19895), 6048 states have return successors, (33914), 20628 states have call predecessors, (33914), 19886 states have call successors, (33914) [2021-11-23 02:54:51,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62456 states to 62456 states and 101251 transitions. [2021-11-23 02:54:51,400 INFO L78 Accepts]: Start accepts. Automaton has 62456 states and 101251 transitions. Word has length 445 [2021-11-23 02:54:51,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:54:51,402 INFO L470 AbstractCegarLoop]: Abstraction has 62456 states and 101251 transitions. [2021-11-23 02:54:51,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-23 02:54:51,403 INFO L276 IsEmpty]: Start isEmpty. Operand 62456 states and 101251 transitions. [2021-11-23 02:54:51,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2021-11-23 02:54:51,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:54:51,448 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:54:51,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:54:51,448 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:54:51,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:54:51,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1249583235, now seen corresponding path program 1 times [2021-11-23 02:54:51,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:54:51,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543919384] [2021-11-23 02:54:51,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:51,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:54:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:51,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1772 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2021-11-23 02:54:51,963 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:54:51,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543919384] [2021-11-23 02:54:51,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543919384] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:54:51,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101398252] [2021-11-23 02:54:51,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:51,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:54:51,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3be9bb18-1d25-4372-92dd-6f1172e0988e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:54:51,969 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3be9bb18-1d25-4372-92dd-6f1172e0988e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:54:51,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3be9bb18-1d25-4372-92dd-6f1172e0988e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:54:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:54,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 5506 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:54:54,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:54:55,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1772 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1772 trivial. 0 not checked. [2021-11-23 02:54:55,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:54:55,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101398252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:54:55,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:54:55,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-11-23 02:54:55,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50742031] [2021-11-23 02:54:55,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:54:55,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:54:55,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:54:55,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:54:55,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:54:55,122 INFO L87 Difference]: Start difference. First operand 62456 states and 101251 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2021-11-23 02:55:04,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:55:04,895 INFO L93 Difference]: Finished difference Result 170051 states and 277339 transitions. [2021-11-23 02:55:04,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:55:04,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) Word has length 478 [2021-11-23 02:55:04,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:55:05,789 INFO L225 Difference]: With dead ends: 170051 [2021-11-23 02:55:05,790 INFO L226 Difference]: Without dead ends: 123384 [2021-11-23 02:55:06,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 478 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 02:55:06,032 INFO L933 BasicCegarLoop]: 3444 mSDtfsCounter, 2477 mSDsluCounter, 2398 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2477 SdHoareTripleChecker+Valid, 5568 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:55:06,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2477 Valid, 5568 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-11-23 02:55:06,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123384 states. [2021-11-23 02:55:12,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123384 to 123381. [2021-11-23 02:55:12,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123381 states, 72207 states have (on average 1.3004279363496614) internal successors, (93900), 75851 states have internal predecessors, (93900), 39162 states have call successors, (39162), 10164 states have call predecessors, (39162), 12011 states have return successors, (66929), 40659 states have call predecessors, (66929), 39153 states have call successors, (66929) [2021-11-23 02:55:13,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123381 states to 123381 states and 199991 transitions. [2021-11-23 02:55:13,698 INFO L78 Accepts]: Start accepts. Automaton has 123381 states and 199991 transitions. Word has length 478 [2021-11-23 02:55:13,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:55:13,700 INFO L470 AbstractCegarLoop]: Abstraction has 123381 states and 199991 transitions. [2021-11-23 02:55:13,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2021-11-23 02:55:13,700 INFO L276 IsEmpty]: Start isEmpty. Operand 123381 states and 199991 transitions. [2021-11-23 02:55:14,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2021-11-23 02:55:14,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:55:14,500 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 19, 19, 19, 19, 19, 19, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:55:14,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3be9bb18-1d25-4372-92dd-6f1172e0988e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:55:14,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3be9bb18-1d25-4372-92dd-6f1172e0988e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:55:14,702 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:55:14,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:55:14,703 INFO L85 PathProgramCache]: Analyzing trace with hash 969143507, now seen corresponding path program 1 times [2021-11-23 02:55:14,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:55:14,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064313100] [2021-11-23 02:55:14,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:55:14,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:55:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:55:15,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3517 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3515 trivial. 0 not checked. [2021-11-23 02:55:15,290 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:55:15,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064313100] [2021-11-23 02:55:15,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064313100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:55:15,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:55:15,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:55:15,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916974616] [2021-11-23 02:55:15,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:55:15,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:55:15,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:55:15,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:55:15,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:55:15,294 INFO L87 Difference]: Start difference. First operand 123381 states and 199991 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-23 02:55:17,348 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:55:28,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:55:28,345 INFO L93 Difference]: Finished difference Result 246732 states and 399939 transitions. [2021-11-23 02:55:28,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:55:28,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 542 [2021-11-23 02:55:28,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:55:29,162 INFO L225 Difference]: With dead ends: 246732 [2021-11-23 02:55:29,163 INFO L226 Difference]: Without dead ends: 123381 [2021-11-23 02:55:29,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:55:29,625 INFO L933 BasicCegarLoop]: 2278 mSDtfsCounter, 3 mSDsluCounter, 5116 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6828 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:55:29,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6828 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 860 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-11-23 02:55:29,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123381 states. [2021-11-23 02:55:35,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123381 to 123381. [2021-11-23 02:55:35,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123381 states, 72207 states have (on average 1.3002063511847881) internal successors, (93884), 75851 states have internal predecessors, (93884), 39162 states have call successors, (39162), 10164 states have call predecessors, (39162), 12011 states have return successors, (66929), 40659 states have call predecessors, (66929), 39153 states have call successors, (66929) [2021-11-23 02:55:36,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123381 states to 123381 states and 199975 transitions. [2021-11-23 02:55:37,497 INFO L78 Accepts]: Start accepts. Automaton has 123381 states and 199975 transitions. Word has length 542 [2021-11-23 02:55:37,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:55:37,498 INFO L470 AbstractCegarLoop]: Abstraction has 123381 states and 199975 transitions. [2021-11-23 02:55:37,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-23 02:55:37,499 INFO L276 IsEmpty]: Start isEmpty. Operand 123381 states and 199975 transitions. [2021-11-23 02:55:37,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2021-11-23 02:55:37,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:55:37,656 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 19, 19, 19, 19, 19, 19, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:55:37,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:55:37,657 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:55:37,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:55:37,658 INFO L85 PathProgramCache]: Analyzing trace with hash 6454875, now seen corresponding path program 1 times [2021-11-23 02:55:37,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:55:37,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018195968] [2021-11-23 02:55:37,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:55:37,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:55:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:55:38,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3517 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3517 trivial. 0 not checked. [2021-11-23 02:55:38,478 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:55:38,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018195968] [2021-11-23 02:55:38,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018195968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:55:38,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:55:38,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:55:38,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648572885] [2021-11-23 02:55:38,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:55:38,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:55:38,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:55:38,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:55:38,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:55:38,482 INFO L87 Difference]: Start difference. First operand 123381 states and 199975 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-23 02:55:40,530 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []