./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-08_1a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7 --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 a3ff87c3e5fb8bea0460b71e9b9f7b5386599503dd506c0803db0e63f978b184 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:37:10,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:37:10,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:37:10,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:37:10,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:37:10,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:37:10,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:37:10,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:37:10,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:37:10,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:37:10,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:37:10,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:37:10,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:37:10,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:37:10,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:37:10,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:37:10,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:37:10,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:37:10,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:37:10,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:37:10,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:37:10,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:37:10,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:37:10,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:37:10,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:37:10,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:37:10,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:37:10,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:37:10,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:37:10,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:37:10,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:37:10,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:37:10,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:37:10,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:37:10,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:37:10,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:37:10,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:37:10,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:37:10,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:37:10,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:37:10,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:37:10,233 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:37:10,258 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:37:10,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:37:10,259 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:37:10,260 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:37:10,261 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:37:10,261 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:37:10,262 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:37:10,262 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:37:10,263 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:37:10,263 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:37:10,264 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:37:10,264 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:37:10,264 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:37:10,265 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:37:10,265 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:37:10,266 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:37:10,266 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:37:10,267 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:37:10,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:37:10,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:37:10,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:37:10,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:37:10,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:37:10,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:37:10,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:37:10,270 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:37:10,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:37:10,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:37:10,271 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:37:10,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:37:10,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:37:10,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:37:10,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:37:10,272 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:37:10,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:37:10,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:37:10,273 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:37:10,273 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:37:10,274 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_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3ff87c3e5fb8bea0460b71e9b9f7b5386599503dd506c0803db0e63f978b184 [2021-11-25 18:37:10,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:37:10,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:37:10,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:37:10,631 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:37:10,632 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:37:10,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i [2021-11-25 18:37:10,712 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/data/66551a3a1/75ec0c64b6844d31ba4d8dbb18fc7f7c/FLAG1ad254c16 [2021-11-25 18:37:11,802 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:37:11,803 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i [2021-11-25 18:37:11,909 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/data/66551a3a1/75ec0c64b6844d31ba4d8dbb18fc7f7c/FLAG1ad254c16 [2021-11-25 18:37:12,072 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/data/66551a3a1/75ec0c64b6844d31ba4d8dbb18fc7f7c [2021-11-25 18:37:12,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:37:12,077 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:37:12,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:37:12,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:37:12,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:37:12,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:37:12" (1/1) ... [2021-11-25 18:37:12,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d7947d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:12, skipping insertion in model container [2021-11-25 18:37:12,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:37:12" (1/1) ... [2021-11-25 18:37:12,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:37:12,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:37:15,917 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_8517d969-881a-49b4-83aa-971691f6bd9a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i[413960,413973] [2021-11-25 18:37:16,011 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:37:16,102 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:37:16,731 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_8517d969-881a-49b4-83aa-971691f6bd9a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i[413960,413973] [2021-11-25 18:37:16,750 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:37:16,969 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:37:16,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:16 WrapperNode [2021-11-25 18:37:16,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:37:16,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:37:16,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:37:16,971 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:37:16,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:16" (1/1) ... [2021-11-25 18:37:17,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:16" (1/1) ... [2021-11-25 18:37:17,382 INFO L137 Inliner]: procedures = 420, calls = 2205, calls flagged for inlining = 207, calls inlined = 186, statements flattened = 6279 [2021-11-25 18:37:17,383 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:37:17,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:37:17,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:37:17,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:37:17,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:16" (1/1) ... [2021-11-25 18:37:17,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:16" (1/1) ... [2021-11-25 18:37:17,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:16" (1/1) ... [2021-11-25 18:37:17,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:16" (1/1) ... [2021-11-25 18:37:17,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:16" (1/1) ... [2021-11-25 18:37:17,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:16" (1/1) ... [2021-11-25 18:37:17,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:16" (1/1) ... [2021-11-25 18:37:17,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:37:17,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:37:17,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:37:17,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:37:17,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:16" (1/1) ... [2021-11-25 18:37:17,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:37:17,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:37:17,747 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:37:17,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:37:17,792 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ddp_done [2021-11-25 18:37:17,792 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ddp_done [2021-11-25 18:37:17,792 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_get_wwn [2021-11-25 18:37:17,792 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_get_wwn [2021-11-25 18:37:17,792 INFO L130 BoogieDeclarations]: Found specification of procedure fc_lport_bsg_request [2021-11-25 18:37:17,792 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_lport_bsg_request [2021-11-25 18:37:17,793 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-25 18:37:17,793 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_hostlist_del [2021-11-25 18:37:17,793 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_hostlist_del [2021-11-25 18:37:17,793 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-11-25 18:37:17,793 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-11-25 18:37:17,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:37:17,794 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:37:17,794 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-11-25 18:37:17,794 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-11-25 18:37:17,794 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-25 18:37:17,794 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-25 18:37:17,794 INFO L130 BoogieDeclarations]: Found specification of procedure fc_frame_header_get [2021-11-25 18:37:17,794 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_frame_header_get [2021-11-25 18:37:17,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:37:17,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:37:17,795 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_netdev [2021-11-25 18:37:17,795 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_netdev [2021-11-25 18:37:17,795 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_recv_flogi [2021-11-25 18:37:17,795 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_recv_flogi [2021-11-25 18:37:17,796 INFO L130 BoogieDeclarations]: Found specification of procedure fc_vport_setlink [2021-11-25 18:37:17,796 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_vport_setlink [2021-11-25 18:37:17,796 INFO L130 BoogieDeclarations]: Found specification of procedure fc_eh_abort [2021-11-25 18:37:17,796 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_eh_abort [2021-11-25 18:37:17,796 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-11-25 18:37:17,796 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-11-25 18:37:17,796 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_dev_from_skb [2021-11-25 18:37:17,797 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_dev_from_skb [2021-11-25 18:37:17,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_4 [2021-11-25 18:37:17,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_4 [2021-11-25 18:37:17,797 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_percpu_thread_create [2021-11-25 18:37:17,797 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_percpu_thread_create [2021-11-25 18:37:17,797 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_device_priv [2021-11-25 18:37:17,798 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_device_priv [2021-11-25 18:37:17,798 INFO L130 BoogieDeclarations]: Found specification of procedure __preempt_count_sub [2021-11-25 18:37:17,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __preempt_count_sub [2021-11-25 18:37:17,798 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_link_ok [2021-11-25 18:37:17,798 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_link_ok [2021-11-25 18:37:17,798 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 18:37:17,798 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 18:37:17,799 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_vport_destroy [2021-11-25 18:37:17,799 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_vport_destroy [2021-11-25 18:37:17,799 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_alloc [2021-11-25 18:37:17,799 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_alloc [2021-11-25 18:37:17,799 INFO L130 BoogieDeclarations]: Found specification of procedure fc_get_host_port_state [2021-11-25 18:37:17,799 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_get_host_port_state [2021-11-25 18:37:17,800 INFO L130 BoogieDeclarations]: Found specification of procedure fc_release_transport [2021-11-25 18:37:17,800 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_release_transport [2021-11-25 18:37:17,800 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_reset [2021-11-25 18:37:17,800 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_reset [2021-11-25 18:37:17,800 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-25 18:37:17,800 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-25 18:37:17,801 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 18:37:17,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 18:37:17,801 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_link_speed_update [2021-11-25 18:37:17,801 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_link_speed_update [2021-11-25 18:37:17,801 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_xmit [2021-11-25 18:37:17,801 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_xmit [2021-11-25 18:37:17,802 INFO L130 BoogieDeclarations]: Found specification of procedure fc_fabric_logoff [2021-11-25 18:37:17,802 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_fabric_logoff [2021-11-25 18:37:17,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:37:17,802 INFO L130 BoogieDeclarations]: Found specification of procedure fc_frame_payload_get [2021-11-25 18:37:17,802 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_frame_payload_get [2021-11-25 18:37:17,802 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-25 18:37:17,803 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-25 18:37:17,803 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_remove [2021-11-25 18:37:17,803 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_remove [2021-11-25 18:37:17,803 INFO L130 BoogieDeclarations]: Found specification of procedure fc_exch_mgr_alloc [2021-11-25 18:37:17,803 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_exch_mgr_alloc [2021-11-25 18:37:17,803 INFO L130 BoogieDeclarations]: Found specification of procedure is_fip_mode [2021-11-25 18:37:17,803 INFO L138 BoogieDeclarations]: Found implementation of procedure is_fip_mode [2021-11-25 18:37:17,804 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_check_wait_queue [2021-11-25 18:37:17,804 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_check_wait_queue [2021-11-25 18:37:17,804 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-25 18:37:17,804 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-25 18:37:17,804 INFO L130 BoogieDeclarations]: Found specification of procedure fc_fabric_login [2021-11-25 18:37:17,804 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_fabric_login [2021-11-25 18:37:17,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 18:37:17,805 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_maps_update_done [2021-11-25 18:37:17,805 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_maps_update_done [2021-11-25 18:37:17,805 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ddp_target [2021-11-25 18:37:17,805 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ddp_target [2021-11-25 18:37:17,805 INFO L130 BoogieDeclarations]: Found specification of procedure fc_set_rport_loss_tmo [2021-11-25 18:37:17,805 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_set_rport_loss_tmo [2021-11-25 18:37:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:37:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ddp_setup [2021-11-25 18:37:17,806 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ddp_setup [2021-11-25 18:37:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:37:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 18:37:17,806 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 18:37:17,807 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_wwn_from_mac [2021-11-25 18:37:17,807 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_wwn_from_mac [2021-11-25 18:37:17,807 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-25 18:37:17,807 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-25 18:37:17,807 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-25 18:37:17,807 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-25 18:37:17,807 INFO L130 BoogieDeclarations]: Found specification of procedure fc_attach_transport [2021-11-25 18:37:17,808 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_attach_transport [2021-11-25 18:37:17,808 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_hostlist_lookup_port [2021-11-25 18:37:17,808 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_hostlist_lookup_port [2021-11-25 18:37:17,808 INFO L130 BoogieDeclarations]: Found specification of procedure dcb_getapp [2021-11-25 18:37:17,808 INFO L138 BoogieDeclarations]: Found implementation of procedure dcb_getapp [2021-11-25 18:37:17,808 INFO L130 BoogieDeclarations]: Found specification of procedure fc_rport_terminate_io [2021-11-25 18:37:17,809 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_rport_terminate_io [2021-11-25 18:37:17,809 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2021-11-25 18:37:17,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2021-11-25 18:37:17,809 INFO L130 BoogieDeclarations]: Found specification of procedure _fcoe_create [2021-11-25 18:37:17,809 INFO L138 BoogieDeclarations]: Found implementation of procedure _fcoe_create [2021-11-25 18:37:17,809 INFO L130 BoogieDeclarations]: Found specification of procedure fc_exch_mgr_free [2021-11-25 18:37:17,810 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_exch_mgr_free [2021-11-25 18:37:17,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-25 18:37:17,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-25 18:37:17,810 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2021-11-25 18:37:17,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2021-11-25 18:37:17,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:37:17,811 INFO L130 BoogieDeclarations]: Found specification of procedure dcb_ieee_getapp_mask [2021-11-25 18:37:17,811 INFO L138 BoogieDeclarations]: Found implementation of procedure dcb_ieee_getapp_mask [2021-11-25 18:37:17,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:37:17,811 INFO L130 BoogieDeclarations]: Found specification of procedure fc_set_mfs [2021-11-25 18:37:17,811 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_set_mfs [2021-11-25 18:37:17,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:37:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 18:37:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2021-11-25 18:37:17,812 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2021-11-25 18:37:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:37:17,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:37:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_link_up [2021-11-25 18:37:17,812 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_link_up [2021-11-25 18:37:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure lport_priv [2021-11-25 18:37:17,813 INFO L138 BoogieDeclarations]: Found implementation of procedure lport_priv [2021-11-25 18:37:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_netdev_features_change [2021-11-25 18:37:17,813 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_netdev_features_change [2021-11-25 18:37:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_disable [2021-11-25 18:37:17,813 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_disable [2021-11-25 18:37:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 18:37:17,814 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 18:37:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure fc_vport_set_state [2021-11-25 18:37:17,814 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_vport_set_state [2021-11-25 18:37:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_clean_pending_queue [2021-11-25 18:37:17,814 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_clean_pending_queue [2021-11-25 18:37:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_net [2021-11-25 18:37:17,815 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_net [2021-11-25 18:37:17,815 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_enabled [2021-11-25 18:37:17,815 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_enabled [2021-11-25 18:37:17,815 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_link_down [2021-11-25 18:37:17,815 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_link_down [2021-11-25 18:37:17,815 INFO L130 BoogieDeclarations]: Found specification of procedure shost_priv [2021-11-25 18:37:17,815 INFO L138 BoogieDeclarations]: Found implementation of procedure shost_priv [2021-11-25 18:37:17,816 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-25 18:37:17,816 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-25 18:37:17,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:37:17,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:37:17,816 INFO L130 BoogieDeclarations]: Found specification of procedure eth_hdr [2021-11-25 18:37:17,816 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_hdr [2021-11-25 18:37:17,817 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-25 18:37:17,817 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-25 18:37:17,817 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-25 18:37:17,817 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-25 18:37:17,817 INFO L130 BoogieDeclarations]: Found specification of procedure fc_frame_payload_op [2021-11-25 18:37:17,817 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_frame_payload_op [2021-11-25 18:37:17,817 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_get_lesb [2021-11-25 18:37:17,818 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_get_lesb [2021-11-25 18:37:17,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:37:17,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:37:17,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:37:17,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:37:17,818 INFO L130 BoogieDeclarations]: Found specification of procedure fc_elsct_send [2021-11-25 18:37:17,818 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_elsct_send [2021-11-25 18:37:17,819 INFO L130 BoogieDeclarations]: Found specification of procedure vlan_dev_vlan_id [2021-11-25 18:37:17,819 INFO L138 BoogieDeclarations]: Found implementation of procedure vlan_dev_vlan_id [2021-11-25 18:37:17,819 INFO L130 BoogieDeclarations]: Found specification of procedure fc_queuecommand [2021-11-25 18:37:17,819 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_queuecommand [2021-11-25 18:37:17,819 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-25 18:37:17,819 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-25 18:37:17,820 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-25 18:37:17,820 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-25 18:37:17,820 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-25 18:37:17,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-11-25 18:37:17,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-11-25 18:37:17,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_17 [2021-11-25 18:37:17,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_17 [2021-11-25 18:37:17,821 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-11-25 18:37:17,821 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-11-25 18:37:17,821 INFO L130 BoogieDeclarations]: Found specification of procedure fc_get_host_speed [2021-11-25 18:37:17,821 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_get_host_speed [2021-11-25 18:37:17,821 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_head_init [2021-11-25 18:37:17,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_head_init [2021-11-25 18:37:17,822 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_create [2021-11-25 18:37:17,822 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_create [2021-11-25 18:37:17,822 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 18:37:17,822 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 18:37:17,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-25 18:37:17,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-25 18:37:17,823 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_destroy [2021-11-25 18:37:17,823 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_destroy [2021-11-25 18:37:17,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:37:17,823 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:37:17,823 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 18:37:17,823 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 18:37:17,824 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_priv [2021-11-25 18:37:17,824 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_priv [2021-11-25 18:37:17,824 INFO L130 BoogieDeclarations]: Found specification of procedure dev_uc_del [2021-11-25 18:37:17,824 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_uc_del [2021-11-25 18:37:17,824 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_destroy [2021-11-25 18:37:17,824 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_destroy [2021-11-25 18:37:17,825 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-25 18:37:17,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-25 18:37:17,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2021-11-25 18:37:17,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2021-11-25 18:37:17,825 INFO L130 BoogieDeclarations]: Found specification of procedure fc_eh_device_reset [2021-11-25 18:37:17,825 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_eh_device_reset [2021-11-25 18:37:17,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:37:17,826 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 18:37:17,826 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 18:37:17,826 INFO L130 BoogieDeclarations]: Found specification of procedure fc_set_wwpn [2021-11-25 18:37:17,826 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_set_wwpn [2021-11-25 18:37:17,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:37:17,826 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-11-25 18:37:17,827 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-11-25 18:37:17,827 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2021-11-25 18:37:17,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2021-11-25 18:37:17,827 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_percpu_thread_destroy [2021-11-25 18:37:17,827 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_percpu_thread_destroy [2021-11-25 18:37:17,827 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2021-11-25 18:37:17,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2021-11-25 18:37:17,828 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2021-11-25 18:37:17,828 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2021-11-25 18:37:17,828 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_cleanup [2021-11-25 18:37:17,828 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_cleanup [2021-11-25 18:37:17,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:37:17,829 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u16~0~X~$Pointer$~X~int~TO~int [2021-11-25 18:37:17,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u16~0~X~$Pointer$~X~int~TO~int [2021-11-25 18:37:17,829 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-25 18:37:17,829 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-25 18:37:17,829 INFO L130 BoogieDeclarations]: Found specification of procedure dev_add_pack [2021-11-25 18:37:17,830 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_add_pack [2021-11-25 18:37:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure fc_set_wwnn [2021-11-25 18:37:17,830 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_set_wwnn [2021-11-25 18:37:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-11-25 18:37:17,830 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-11-25 18:37:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 18:37:17,831 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 18:37:17,831 INFO L130 BoogieDeclarations]: Found specification of procedure fc_get_host_stats [2021-11-25 18:37:17,831 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_get_host_stats [2021-11-25 18:37:17,831 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_enable [2021-11-25 18:37:17,831 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_enable [2021-11-25 18:37:17,831 INFO L130 BoogieDeclarations]: Found specification of procedure ntoh24 [2021-11-25 18:37:17,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ntoh24 [2021-11-25 18:37:17,832 INFO L130 BoogieDeclarations]: Found specification of procedure dev_uc_add [2021-11-25 18:37:17,832 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_uc_add [2021-11-25 18:37:17,832 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-11-25 18:37:17,832 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-11-25 18:37:17,832 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u16~0~TO~int [2021-11-25 18:37:17,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u16~0~TO~int [2021-11-25 18:37:17,833 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_if_destroy [2021-11-25 18:37:17,833 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_if_destroy [2021-11-25 18:37:17,833 INFO L130 BoogieDeclarations]: Found specification of procedure dev_put [2021-11-25 18:37:17,833 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_put [2021-11-25 18:37:17,833 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_setup [2021-11-25 18:37:17,834 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_setup [2021-11-25 18:37:17,834 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_2 [2021-11-25 18:37:17,834 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_2 [2021-11-25 18:37:17,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:37:17,834 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_if_create [2021-11-25 18:37:17,834 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_if_create [2021-11-25 18:37:17,835 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_device_delete [2021-11-25 18:37:17,835 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_device_delete [2021-11-25 18:37:17,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 18:37:17,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 18:37:17,835 INFO L130 BoogieDeclarations]: Found specification of procedure dev_mc_add [2021-11-25 18:37:17,835 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_mc_add [2021-11-25 18:37:17,836 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-25 18:37:17,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-25 18:37:17,836 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2021-11-25 18:37:17,836 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2021-11-25 18:37:17,836 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-25 18:37:17,836 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-25 18:37:17,836 INFO L130 BoogieDeclarations]: Found specification of procedure __preempt_count_add [2021-11-25 18:37:17,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __preempt_count_add [2021-11-25 18:37:17,837 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_port_send [2021-11-25 18:37:17,837 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_port_send [2021-11-25 18:37:17,837 INFO L130 BoogieDeclarations]: Found specification of procedure fc_eh_host_reset [2021-11-25 18:37:17,837 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_eh_host_reset [2021-11-25 18:37:17,837 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_destroy_work [2021-11-25 18:37:17,838 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_destroy_work [2021-11-25 18:37:17,838 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-11-25 18:37:17,838 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-11-25 18:37:17,838 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_check [2021-11-25 18:37:17,838 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_check [2021-11-25 18:37:17,838 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2021-11-25 18:37:17,838 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2021-11-25 18:37:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure fc_slave_alloc [2021-11-25 18:37:17,839 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_slave_alloc [2021-11-25 18:37:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-25 18:37:17,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ffs [2021-11-25 18:37:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_elsct_send [2021-11-25 18:37:17,839 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_elsct_send [2021-11-25 18:37:17,840 INFO L130 BoogieDeclarations]: Found specification of procedure vlan_dev_real_dev [2021-11-25 18:37:17,840 INFO L138 BoogieDeclarations]: Found implementation of procedure vlan_dev_real_dev [2021-11-25 18:37:17,840 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_maps_update_begin [2021-11-25 18:37:17,840 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_maps_update_begin [2021-11-25 18:37:17,840 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-11-25 18:37:17,840 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-11-25 18:37:17,841 INFO L130 BoogieDeclarations]: Found specification of procedure dev_mc_del [2021-11-25 18:37:17,841 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_mc_del [2021-11-25 18:37:17,841 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_remove_pack [2021-11-25 18:37:17,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_remove_pack [2021-11-25 18:37:17,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:37:17,841 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-11-25 18:37:17,842 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-11-25 18:37:18,940 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:37:18,944 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:37:19,545 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:37:26,674 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:37:29,555 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:37:29,556 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 18:37:29,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:37:29 BoogieIcfgContainer [2021-11-25 18:37:29,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:37:29,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:37:29,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:37:29,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:37:29,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:37:12" (1/3) ... [2021-11-25 18:37:29,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3cbe76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:37:29, skipping insertion in model container [2021-11-25 18:37:29,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:16" (2/3) ... [2021-11-25 18:37:29,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3cbe76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:37:29, skipping insertion in model container [2021-11-25 18:37:29,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:37:29" (3/3) ... [2021-11-25 18:37:29,577 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i [2021-11-25 18:37:29,583 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:37:29,583 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:37:29,655 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:37:29,670 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 [2021-11-25 18:37:29,671 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:37:29,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 1810 states, 1094 states have (on average 1.3491773308957953) internal successors, (1476), 1153 states have internal predecessors, (1476), 567 states have call successors, (567), 148 states have call predecessors, (567), 147 states have return successors, (554), 544 states have call predecessors, (554), 554 states have call successors, (554) [2021-11-25 18:37:29,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-11-25 18:37:29,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:37:29,777 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:37:29,777 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:37:29,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:37:29,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1167434265, now seen corresponding path program 1 times [2021-11-25 18:37:29,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:37:29,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970472191] [2021-11-25 18:37:29,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:29,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:37:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:37:31,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1747 trivial. 0 not checked. [2021-11-25 18:37:31,307 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:37:31,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970472191] [2021-11-25 18:37:31,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970472191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:37:31,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:37:31,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:37:31,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889391269] [2021-11-25 18:37:31,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:37:31,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:37:31,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:37:31,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:37:31,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:37:31,373 INFO L87 Difference]: Start difference. First operand has 1810 states, 1094 states have (on average 1.3491773308957953) internal successors, (1476), 1153 states have internal predecessors, (1476), 567 states have call successors, (567), 148 states have call predecessors, (567), 147 states have return successors, (554), 544 states have call predecessors, (554), 554 states have call successors, (554) Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-25 18:37:33,582 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:37:39,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:37:39,025 INFO L93 Difference]: Finished difference Result 5114 states and 7428 transitions. [2021-11-25 18:37:39,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:37:39,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 327 [2021-11-25 18:37:39,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:37:39,095 INFO L225 Difference]: With dead ends: 5114 [2021-11-25 18:37:39,096 INFO L226 Difference]: Without dead ends: 3331 [2021-11-25 18:37:39,116 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 [2021-11-25 18:37:39,121 INFO L933 BasicCegarLoop]: 2957 mSDtfsCounter, 2246 mSDsluCounter, 2521 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2246 SdHoareTripleChecker+Valid, 5197 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:37:39,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2246 Valid, 5197 Invalid, 620 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 617 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2021-11-25 18:37:39,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3331 states. [2021-11-25 18:37:39,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3331 to 3326. [2021-11-25 18:37:39,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3326 states, 2035 states have (on average 1.3444717444717444) internal successors, (2736), 2120 states have internal predecessors, (2736), 1011 states have call successors, (1011), 280 states have call predecessors, (1011), 279 states have return successors, (1036), 989 states have call predecessors, (1036), 1009 states have call successors, (1036) [2021-11-25 18:37:39,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3326 states to 3326 states and 4783 transitions. [2021-11-25 18:37:39,513 INFO L78 Accepts]: Start accepts. Automaton has 3326 states and 4783 transitions. Word has length 327 [2021-11-25 18:37:39,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:37:39,517 INFO L470 AbstractCegarLoop]: Abstraction has 3326 states and 4783 transitions. [2021-11-25 18:37:39,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-25 18:37:39,518 INFO L276 IsEmpty]: Start isEmpty. Operand 3326 states and 4783 transitions. [2021-11-25 18:37:39,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2021-11-25 18:37:39,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:37:39,538 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:37:39,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:37:39,539 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:37:39,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:37:39,540 INFO L85 PathProgramCache]: Analyzing trace with hash 104794519, now seen corresponding path program 1 times [2021-11-25 18:37:39,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:37:39,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266200074] [2021-11-25 18:37:39,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:39,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:37:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:37:40,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1747 trivial. 0 not checked. [2021-11-25 18:37:40,350 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:37:40,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266200074] [2021-11-25 18:37:40,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266200074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:37:40,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:37:40,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:37:40,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750086059] [2021-11-25 18:37:40,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:37:40,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:37:40,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:37:40,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:37:40,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:37:40,363 INFO L87 Difference]: Start difference. First operand 3326 states and 4783 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-25 18:37:42,413 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:37:44,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:37:47,503 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:37:49,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:37:49,045 INFO L93 Difference]: Finished difference Result 9786 states and 14055 transitions. [2021-11-25 18:37:49,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:37:49,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 357 [2021-11-25 18:37:49,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:37:49,121 INFO L225 Difference]: With dead ends: 9786 [2021-11-25 18:37:49,122 INFO L226 Difference]: Without dead ends: 6525 [2021-11-25 18:37:49,144 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 [2021-11-25 18:37:49,145 INFO L933 BasicCegarLoop]: 2796 mSDtfsCounter, 2413 mSDsluCounter, 2544 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2413 SdHoareTripleChecker+Valid, 5059 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:37:49,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2413 Valid, 5059 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 589 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2021-11-25 18:37:49,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6525 states. [2021-11-25 18:37:49,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6525 to 6510. [2021-11-25 18:37:49,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6510 states, 3984 states have (on average 1.3458835341365463) internal successors, (5362), 4156 states have internal predecessors, (5362), 1969 states have call successors, (1969), 557 states have call predecessors, (1969), 556 states have return successors, (2019), 1924 states have call predecessors, (2019), 1967 states have call successors, (2019) [2021-11-25 18:37:49,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6510 states to 6510 states and 9350 transitions. [2021-11-25 18:37:49,585 INFO L78 Accepts]: Start accepts. Automaton has 6510 states and 9350 transitions. Word has length 357 [2021-11-25 18:37:49,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:37:49,592 INFO L470 AbstractCegarLoop]: Abstraction has 6510 states and 9350 transitions. [2021-11-25 18:37:49,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-25 18:37:49,594 INFO L276 IsEmpty]: Start isEmpty. Operand 6510 states and 9350 transitions. [2021-11-25 18:37:49,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2021-11-25 18:37:49,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:37:49,615 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:37:49,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:37:49,619 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:37:49,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:37:49,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1607159923, now seen corresponding path program 1 times [2021-11-25 18:37:49,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:37:49,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054103512] [2021-11-25 18:37:49,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:49,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:37:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:37:50,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1765 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2021-11-25 18:37:50,466 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:37:50,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054103512] [2021-11-25 18:37:50,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054103512] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:37:50,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056461180] [2021-11-25 18:37:50,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:50,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:37:50,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:37:50,473 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:37:50,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:37:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:37:52,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 6106 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 18:37:52,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:37:53,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1765 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2021-11-25 18:37:53,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:37:53,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056461180] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:37:53,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:37:53,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-25 18:37:53,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32693343] [2021-11-25 18:37:53,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:37:53,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:37:53,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:37:53,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:37:53,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:37:53,775 INFO L87 Difference]: Start difference. First operand 6510 states and 9350 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (64), 4 states have call predecessors, (64), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-25 18:38:06,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:38:06,237 INFO L93 Difference]: Finished difference Result 19352 states and 28028 transitions. [2021-11-25 18:38:06,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:38:06,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (64), 4 states have call predecessors, (64), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 442 [2021-11-25 18:38:06,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:38:06,361 INFO L225 Difference]: With dead ends: 19352 [2021-11-25 18:38:06,362 INFO L226 Difference]: Without dead ends: 12907 [2021-11-25 18:38:06,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:38:06,408 INFO L933 BasicCegarLoop]: 3311 mSDtfsCounter, 2527 mSDsluCounter, 5367 mSDsCounter, 0 mSdLazyCounter, 3439 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2527 SdHoareTripleChecker+Valid, 7833 SdHoareTripleChecker+Invalid, 3456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:38:06,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2527 Valid, 7833 Invalid, 3456 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 3439 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2021-11-25 18:38:06,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12907 states. [2021-11-25 18:38:07,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12907 to 12842. [2021-11-25 18:38:07,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12842 states, 7876 states have (on average 1.3484002031488065) internal successors, (10620), 8228 states have internal predecessors, (10620), 3867 states have call successors, (3867), 1099 states have call predecessors, (3867), 1098 states have return successors, (4113), 3766 states have call predecessors, (4113), 3865 states have call successors, (4113) [2021-11-25 18:38:07,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12842 states to 12842 states and 18600 transitions. [2021-11-25 18:38:07,364 INFO L78 Accepts]: Start accepts. Automaton has 12842 states and 18600 transitions. Word has length 442 [2021-11-25 18:38:07,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:38:07,366 INFO L470 AbstractCegarLoop]: Abstraction has 12842 states and 18600 transitions. [2021-11-25 18:38:07,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (64), 4 states have call predecessors, (64), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-25 18:38:07,367 INFO L276 IsEmpty]: Start isEmpty. Operand 12842 states and 18600 transitions. [2021-11-25 18:38:07,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2021-11-25 18:38:07,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:38:07,393 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:38:07,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:38:07,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:38:07,622 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:38:07,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:38:07,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1732836321, now seen corresponding path program 1 times [2021-11-25 18:38:07,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:38:07,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106663637] [2021-11-25 18:38:07,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:38:07,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:38:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:38:08,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1766 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2021-11-25 18:38:08,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:38:08,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106663637] [2021-11-25 18:38:08,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106663637] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:38:08,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884853506] [2021-11-25 18:38:08,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:38:08,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:38:08,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:38:08,449 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:38:08,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:38:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:38:10,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 6108 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 18:38:10,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:38:11,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1766 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2021-11-25 18:38:11,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:38:11,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884853506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:38:11,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:38:11,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-25 18:38:11,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992646202] [2021-11-25 18:38:11,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:38:11,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:38:11,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:38:11,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:38:11,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:38:11,755 INFO L87 Difference]: Start difference. First operand 12842 states and 18600 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (64), 4 states have call predecessors, (64), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-25 18:38:13,809 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 [] [2021-11-25 18:38:21,919 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:38:25,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:38:25,883 INFO L93 Difference]: Finished difference Result 25677 states and 37262 transitions. [2021-11-25 18:38:25,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:38:25,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (64), 4 states have call predecessors, (64), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 443 [2021-11-25 18:38:25,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:38:25,985 INFO L225 Difference]: With dead ends: 25677 [2021-11-25 18:38:25,985 INFO L226 Difference]: Without dead ends: 12900 [2021-11-25 18:38:26,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:38:26,056 INFO L933 BasicCegarLoop]: 3277 mSDtfsCounter, 2408 mSDsluCounter, 7845 mSDsCounter, 0 mSdLazyCounter, 3525 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2408 SdHoareTripleChecker+Valid, 10081 SdHoareTripleChecker+Invalid, 3539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3525 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:38:26,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2408 Valid, 10081 Invalid, 3539 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 3525 Invalid, 1 Unknown, 0 Unchecked, 13.4s Time] [2021-11-25 18:38:26,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12900 states. [2021-11-25 18:38:26,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12900 to 12835. [2021-11-25 18:38:26,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12835 states, 7875 states have (on average 1.347047619047619) internal successors, (10608), 8223 states have internal predecessors, (10608), 3857 states have call successors, (3857), 1103 states have call predecessors, (3857), 1102 states have return successors, (4079), 3756 states have call predecessors, (4079), 3855 states have call successors, (4079) [2021-11-25 18:38:26,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12835 states to 12835 states and 18544 transitions. [2021-11-25 18:38:26,702 INFO L78 Accepts]: Start accepts. Automaton has 12835 states and 18544 transitions. Word has length 443 [2021-11-25 18:38:26,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:38:26,705 INFO L470 AbstractCegarLoop]: Abstraction has 12835 states and 18544 transitions. [2021-11-25 18:38:26,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (64), 4 states have call predecessors, (64), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-25 18:38:26,705 INFO L276 IsEmpty]: Start isEmpty. Operand 12835 states and 18544 transitions. [2021-11-25 18:38:26,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2021-11-25 18:38:26,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:38:26,728 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:38:26,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:38:26,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:38:26,942 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:38:26,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:38:26,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1649895462, now seen corresponding path program 1 times [2021-11-25 18:38:26,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:38:26,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772919895] [2021-11-25 18:38:26,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:38:26,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:38:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:38:27,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1767 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2021-11-25 18:38:27,573 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:38:27,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772919895] [2021-11-25 18:38:27,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772919895] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:38:27,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292738812] [2021-11-25 18:38:27,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:38:27,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:38:27,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:38:27,578 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:38:27,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:38:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:38:29,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 6110 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 18:38:29,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:38:30,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1767 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2021-11-25 18:38:30,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:38:30,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292738812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:38:30,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:38:30,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-25 18:38:30,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956219799] [2021-11-25 18:38:30,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:38:30,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:38:30,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:38:30,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:38:30,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:38:30,296 INFO L87 Difference]: Start difference. First operand 12835 states and 18544 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (64), 4 states have call predecessors, (64), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-25 18:38:32,329 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:38:41,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:38:41,199 INFO L93 Difference]: Finished difference Result 32260 states and 46132 transitions. [2021-11-25 18:38:41,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:38:41,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (64), 4 states have call predecessors, (64), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 445 [2021-11-25 18:38:41,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:38:41,330 INFO L225 Difference]: With dead ends: 32260 [2021-11-25 18:38:41,331 INFO L226 Difference]: Without dead ends: 19503 [2021-11-25 18:38:41,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:38:41,395 INFO L933 BasicCegarLoop]: 3011 mSDtfsCounter, 1494 mSDsluCounter, 4140 mSDsCounter, 0 mSdLazyCounter, 2487 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 6454 SdHoareTripleChecker+Invalid, 2500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2487 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:38:41,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1494 Valid, 6454 Invalid, 2500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2487 Invalid, 1 Unknown, 0 Unchecked, 10.3s Time] [2021-11-25 18:38:41,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19503 states. [2021-11-25 18:38:42,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19503 to 19499. [2021-11-25 18:38:42,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19499 states, 11699 states have (on average 1.3156680058124626) internal successors, (15392), 12175 states have internal predecessors, (15392), 5901 states have call successors, (5901), 1899 states have call predecessors, (5901), 1898 states have return successors, (6269), 5784 states have call predecessors, (6269), 5899 states have call successors, (6269) [2021-11-25 18:38:42,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19499 states to 19499 states and 27562 transitions. [2021-11-25 18:38:42,619 INFO L78 Accepts]: Start accepts. Automaton has 19499 states and 27562 transitions. Word has length 445 [2021-11-25 18:38:42,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:38:42,620 INFO L470 AbstractCegarLoop]: Abstraction has 19499 states and 27562 transitions. [2021-11-25 18:38:42,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (64), 4 states have call predecessors, (64), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-25 18:38:42,621 INFO L276 IsEmpty]: Start isEmpty. Operand 19499 states and 27562 transitions. [2021-11-25 18:38:42,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2021-11-25 18:38:42,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:38:42,645 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:38:42,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:38:42,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:38:42,874 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:38:42,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:38:42,874 INFO L85 PathProgramCache]: Analyzing trace with hash 935275120, now seen corresponding path program 1 times [2021-11-25 18:38:42,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:38:42,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044153938] [2021-11-25 18:38:42,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:38:42,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:38:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:38:43,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2021-11-25 18:38:43,649 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:38:43,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044153938] [2021-11-25 18:38:43,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044153938] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:38:43,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:38:43,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 18:38:43,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169490279] [2021-11-25 18:38:43,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:38:43,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:38:43,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:38:43,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:38:43,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:38:43,652 INFO L87 Difference]: Start difference. First operand 19499 states and 27562 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 4 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 5 states have call predecessors, (54), 4 states have call successors, (54) [2021-11-25 18:38:45,701 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:39:00,289 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:39:02,464 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:39:07,940 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:39:24,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:39:24,128 INFO L93 Difference]: Finished difference Result 48457 states and 70017 transitions. [2021-11-25 18:39:24,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-25 18:39:24,128 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 4 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 5 states have call predecessors, (54), 4 states have call successors, (54) Word has length 423 [2021-11-25 18:39:24,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:39:24,317 INFO L225 Difference]: With dead ends: 48457 [2021-11-25 18:39:24,317 INFO L226 Difference]: Without dead ends: 29036 [2021-11-25 18:39:24,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-11-25 18:39:24,411 INFO L933 BasicCegarLoop]: 2313 mSDtfsCounter, 4919 mSDsluCounter, 7215 mSDsCounter, 0 mSdLazyCounter, 16070 mSolverCounterSat, 4287 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5500 SdHoareTripleChecker+Valid, 8659 SdHoareTripleChecker+Invalid, 20361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4287 IncrementalHoareTripleChecker+Valid, 16070 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:39:24,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5500 Valid, 8659 Invalid, 20361 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4287 Valid, 16070 Invalid, 4 Unknown, 0 Unchecked, 38.8s Time] [2021-11-25 18:39:24,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29036 states. [2021-11-25 18:39:26,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29036 to 28863. [2021-11-25 18:39:26,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28863 states, 17047 states have (on average 1.2982929547721007) internal successors, (22132), 17743 states have internal predecessors, (22132), 8905 states have call successors, (8905), 2703 states have call predecessors, (8905), 2910 states have return successors, (10663), 8976 states have call predecessors, (10663), 8903 states have call successors, (10663) [2021-11-25 18:39:26,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28863 states to 28863 states and 41700 transitions. [2021-11-25 18:39:26,378 INFO L78 Accepts]: Start accepts. Automaton has 28863 states and 41700 transitions. Word has length 423 [2021-11-25 18:39:26,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:39:26,379 INFO L470 AbstractCegarLoop]: Abstraction has 28863 states and 41700 transitions. [2021-11-25 18:39:26,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 4 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 5 states have call predecessors, (54), 4 states have call successors, (54) [2021-11-25 18:39:26,379 INFO L276 IsEmpty]: Start isEmpty. Operand 28863 states and 41700 transitions. [2021-11-25 18:39:26,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2021-11-25 18:39:26,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:39:26,406 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:39:26,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:39:26,407 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:39:26,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:39:26,407 INFO L85 PathProgramCache]: Analyzing trace with hash 371942525, now seen corresponding path program 1 times [2021-11-25 18:39:26,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:39:26,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660719907] [2021-11-25 18:39:26,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:39:26,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:39:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:39:27,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2021-11-25 18:39:27,026 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:39:27,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660719907] [2021-11-25 18:39:27,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660719907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:39:27,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:39:27,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 18:39:27,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458943939] [2021-11-25 18:39:27,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:39:27,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:39:27,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:39:27,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:39:27,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:39:27,029 INFO L87 Difference]: Start difference. First operand 28863 states and 41700 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 4 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 5 states have call predecessors, (54), 4 states have call successors, (54) [2021-11-25 18:39:29,077 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:39:41,474 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:39:43,670 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:39:45,865 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:39:49,592 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:07,180 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:10,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:12,543 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:14,686 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:16,830 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:18,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:40:18,259 INFO L93 Difference]: Finished difference Result 54338 states and 78846 transitions. [2021-11-25 18:40:18,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 18:40:18,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 4 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 5 states have call predecessors, (54), 4 states have call successors, (54) Word has length 422 [2021-11-25 18:40:18,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:40:18,421 INFO L225 Difference]: With dead ends: 54338 [2021-11-25 18:40:18,422 INFO L226 Difference]: Without dead ends: 25529 [2021-11-25 18:40:18,553 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 [2021-11-25 18:40:18,555 INFO L933 BasicCegarLoop]: 2536 mSDtfsCounter, 4720 mSDsluCounter, 7233 mSDsCounter, 0 mSdLazyCounter, 16050 mSolverCounterSat, 4194 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5294 SdHoareTripleChecker+Valid, 8893 SdHoareTripleChecker+Invalid, 20254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4194 IncrementalHoareTripleChecker+Valid, 16050 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:40:18,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5294 Valid, 8893 Invalid, 20254 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4194 Valid, 16050 Invalid, 10 Unknown, 0 Unchecked, 49.7s Time] [2021-11-25 18:40:18,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25529 states. [2021-11-25 18:40:20,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25529 to 25397. [2021-11-25 18:40:20,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25397 states, 15069 states have (on average 1.3047979295241887) internal successors, (19662), 15697 states have internal predecessors, (19662), 7829 states have call successors, (7829), 2291 states have call predecessors, (7829), 2498 states have return successors, (9433), 7912 states have call predecessors, (9433), 7827 states have call successors, (9433) [2021-11-25 18:40:20,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25397 states to 25397 states and 36924 transitions. [2021-11-25 18:40:20,850 INFO L78 Accepts]: Start accepts. Automaton has 25397 states and 36924 transitions. Word has length 422 [2021-11-25 18:40:20,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:40:20,851 INFO L470 AbstractCegarLoop]: Abstraction has 25397 states and 36924 transitions. [2021-11-25 18:40:20,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 4 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 5 states have call predecessors, (54), 4 states have call successors, (54) [2021-11-25 18:40:20,852 INFO L276 IsEmpty]: Start isEmpty. Operand 25397 states and 36924 transitions. [2021-11-25 18:40:20,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2021-11-25 18:40:20,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:40:20,873 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] [2021-11-25 18:40:20,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:40:20,874 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:40:20,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:40:20,875 INFO L85 PathProgramCache]: Analyzing trace with hash 724661905, now seen corresponding path program 1 times [2021-11-25 18:40:20,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:40:20,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243282302] [2021-11-25 18:40:20,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:40:20,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:40:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:40:21,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1759 trivial. 0 not checked. [2021-11-25 18:40:21,559 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:40:21,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243282302] [2021-11-25 18:40:21,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243282302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:40:21,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:40:21,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:40:21,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258472996] [2021-11-25 18:40:21,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:40:21,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:40:21,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:40:21,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:40:21,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:40:21,564 INFO L87 Difference]: Start difference. First operand 25397 states and 36924 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2021-11-25 18:40:27,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:40:27,523 INFO L93 Difference]: Finished difference Result 73330 states and 106456 transitions. [2021-11-25 18:40:27,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:40:27,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 437 [2021-11-25 18:40:27,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:40:28,121 INFO L225 Difference]: With dead ends: 73330 [2021-11-25 18:40:28,122 INFO L226 Difference]: Without dead ends: 48011 [2021-11-25 18:40:28,227 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 [2021-11-25 18:40:28,228 INFO L933 BasicCegarLoop]: 2801 mSDtfsCounter, 2410 mSDsluCounter, 2434 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2410 SdHoareTripleChecker+Valid, 4955 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:40:28,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2410 Valid, 4955 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-11-25 18:40:28,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48011 states. [2021-11-25 18:40:30,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48011 to 47994. [2021-11-25 18:40:30,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47994 states, 28412 states have (on average 1.3021258623116994) internal successors, (36996), 29618 states have internal predecessors, (36996), 14734 states have call successors, (14734), 4432 states have call predecessors, (14734), 4847 states have return successors, (17884), 14911 states have call predecessors, (17884), 14732 states have call successors, (17884) [2021-11-25 18:40:31,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47994 states to 47994 states and 69614 transitions. [2021-11-25 18:40:31,360 INFO L78 Accepts]: Start accepts. Automaton has 47994 states and 69614 transitions. Word has length 437 [2021-11-25 18:40:31,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:40:31,377 INFO L470 AbstractCegarLoop]: Abstraction has 47994 states and 69614 transitions. [2021-11-25 18:40:31,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2021-11-25 18:40:31,378 INFO L276 IsEmpty]: Start isEmpty. Operand 47994 states and 69614 transitions. [2021-11-25 18:40:31,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2021-11-25 18:40:31,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:40:31,403 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:40:31,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:40:31,403 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:40:31,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:40:31,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1695479617, now seen corresponding path program 1 times [2021-11-25 18:40:31,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:40:31,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569661712] [2021-11-25 18:40:31,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:40:31,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:40:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:40:31,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1762 trivial. 0 not checked. [2021-11-25 18:40:31,989 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:40:31,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569661712] [2021-11-25 18:40:31,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569661712] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:40:31,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859913528] [2021-11-25 18:40:31,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:40:31,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:40:31,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:40:31,995 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:40:32,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:40:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:40:34,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 6425 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:40:34,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:40:35,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1767 trivial. 0 not checked. [2021-11-25 18:40:35,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:40:35,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859913528] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:40:35,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:40:35,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-11-25 18:40:35,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876875437] [2021-11-25 18:40:35,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:40:35,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:40:35,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:40:35,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:40:35,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:40:35,388 INFO L87 Difference]: Start difference. First operand 47994 states and 69614 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-25 18:40:37,442 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 [] [2021-11-25 18:40:44,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:40:44,162 INFO L93 Difference]: Finished difference Result 142985 states and 207238 transitions. [2021-11-25 18:40:44,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:40:44,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 474 [2021-11-25 18:40:44,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:40:44,610 INFO L225 Difference]: With dead ends: 142985 [2021-11-25 18:40:44,610 INFO L226 Difference]: Without dead ends: 95069 [2021-11-25 18:40:44,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:40:44,779 INFO L933 BasicCegarLoop]: 2949 mSDtfsCounter, 2377 mSDsluCounter, 2557 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2377 SdHoareTripleChecker+Valid, 5225 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:40:44,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2377 Valid, 5225 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 596 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2021-11-25 18:40:44,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95069 states. [2021-11-25 18:40:49,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95069 to 95052. [2021-11-25 18:40:49,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95052 states, 56192 states have (on average 1.2995444191343963) internal successors, (73024), 58552 states have internal predecessors, (73024), 29186 states have call successors, (29186), 8842 states have call predecessors, (29186), 9673 states have return successors, (35488), 29545 states have call predecessors, (35488), 29184 states have call successors, (35488) [2021-11-25 18:40:50,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95052 states to 95052 states and 137698 transitions. [2021-11-25 18:40:50,062 INFO L78 Accepts]: Start accepts. Automaton has 95052 states and 137698 transitions. Word has length 474 [2021-11-25 18:40:50,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:40:50,063 INFO L470 AbstractCegarLoop]: Abstraction has 95052 states and 137698 transitions. [2021-11-25 18:40:50,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-25 18:40:50,064 INFO L276 IsEmpty]: Start isEmpty. Operand 95052 states and 137698 transitions. [2021-11-25 18:40:50,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2021-11-25 18:40:50,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:40:50,114 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 19, 19, 19, 19, 19, 19, 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] [2021-11-25 18:40:50,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-25 18:40:50,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:40:50,330 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:40:50,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:40:50,330 INFO L85 PathProgramCache]: Analyzing trace with hash -217245948, now seen corresponding path program 1 times [2021-11-25 18:40:50,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:40:50,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435280917] [2021-11-25 18:40:50,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:40:50,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:40:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:40:50,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3511 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3507 trivial. 0 not checked. [2021-11-25 18:40:50,901 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:40:50,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435280917] [2021-11-25 18:40:50,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435280917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:40:50,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:40:50,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:40:50,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041882674] [2021-11-25 18:40:50,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:40:50,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:40:50,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:40:50,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:40:50,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:40:50,905 INFO L87 Difference]: Start difference. First operand 95052 states and 137698 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-25 18:40:52,956 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 [] [2021-11-25 18:41:01,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:41:01,701 INFO L93 Difference]: Finished difference Result 190127 states and 275437 transitions. [2021-11-25 18:41:01,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:41:01,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 508 [2021-11-25 18:41:01,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:41:02,532 INFO L225 Difference]: With dead ends: 190127 [2021-11-25 18:41:02,532 INFO L226 Difference]: Without dead ends: 95105 [2021-11-25 18:41:02,799 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 [2021-11-25 18:41:02,800 INFO L933 BasicCegarLoop]: 2280 mSDtfsCounter, 10 mSDsluCounter, 5119 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 6829 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:41:02,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 6829 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 868 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2021-11-25 18:41:02,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95105 states. [2021-11-25 18:41:07,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95105 to 95055. [2021-11-25 18:41:07,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95055 states, 56195 states have (on average 1.2992437049559569) internal successors, (73011), 58555 states have internal predecessors, (73011), 29186 states have call successors, (29186), 8842 states have call predecessors, (29186), 9673 states have return successors, (35488), 29545 states have call predecessors, (35488), 29184 states have call successors, (35488) [2021-11-25 18:41:07,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95055 states to 95055 states and 137685 transitions. [2021-11-25 18:41:07,835 INFO L78 Accepts]: Start accepts. Automaton has 95055 states and 137685 transitions. Word has length 508 [2021-11-25 18:41:07,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:41:07,836 INFO L470 AbstractCegarLoop]: Abstraction has 95055 states and 137685 transitions. [2021-11-25 18:41:07,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-25 18:41:07,837 INFO L276 IsEmpty]: Start isEmpty. Operand 95055 states and 137685 transitions. [2021-11-25 18:41:07,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2021-11-25 18:41:07,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:41:07,882 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:41:07,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 18:41:07,883 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:41:07,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:41:07,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1412458310, now seen corresponding path program 1 times [2021-11-25 18:41:07,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:41:07,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829126481] [2021-11-25 18:41:07,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:41:07,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:41:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:41:09,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1774 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1772 trivial. 0 not checked. [2021-11-25 18:41:09,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:41:09,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829126481] [2021-11-25 18:41:09,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829126481] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:41:09,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906779016] [2021-11-25 18:41:09,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:41:09,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:41:09,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:41:09,056 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:41:09,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8517d969-881a-49b4-83aa-971691f6bd9a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:41:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:41:11,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 6163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:41:11,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:41:12,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1774 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1774 trivial. 0 not checked. [2021-11-25 18:41:12,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:41:12,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906779016] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:41:12,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:41:12,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-11-25 18:41:12,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936859212] [2021-11-25 18:41:12,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:41:12,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:41:12,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:41:12,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:41:12,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:41:12,338 INFO L87 Difference]: Start difference. First operand 95055 states and 137685 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2021-11-25 18:41:23,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:41:23,682 INFO L93 Difference]: Finished difference Result 221681 states and 320663 transitions. [2021-11-25 18:41:23,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:41:23,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) Word has length 491 [2021-11-25 18:41:23,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:41:24,710 INFO L225 Difference]: With dead ends: 221681 [2021-11-25 18:41:24,710 INFO L226 Difference]: Without dead ends: 187020 [2021-11-25 18:41:24,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:41:24,886 INFO L933 BasicCegarLoop]: 3259 mSDtfsCounter, 2466 mSDsluCounter, 2397 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2466 SdHoareTripleChecker+Valid, 5381 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:41:24,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2466 Valid, 5381 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-25 18:41:25,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187020 states.