./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29677964-3c0f-4489-8d38-1d38cd76e9ee/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29677964-3c0f-4489-8d38-1d38cd76e9ee/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29677964-3c0f-4489-8d38-1d38cd76e9ee/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29677964-3c0f-4489-8d38-1d38cd76e9ee/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29677964-3c0f-4489-8d38-1d38cd76e9ee/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29677964-3c0f-4489-8d38-1d38cd76e9ee/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 29824587617da9a02b15e9129afbb9cf5ee59d8d3dbb506aa4fe0ed84097e2f1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:02:23,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:02:23,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:02:23,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:02:23,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:02:23,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:02:23,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:02:23,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:02:23,451 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:02:23,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:02:23,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:02:23,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:02:23,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:02:23,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:02:23,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:02:23,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:02:23,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:02:23,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:02:23,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:02:23,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:02:23,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:02:23,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:02:23,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:02:23,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:02:23,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:02:23,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:02:23,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:02:23,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:02:23,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:02:23,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:02:23,491 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:02:23,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:02:23,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:02:23,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:02:23,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:02:23,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:02:23,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:02:23,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:02:23,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:02:23,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:02:23,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:02:23,502 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29677964-3c0f-4489-8d38-1d38cd76e9ee/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:02:23,535 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:02:23,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:02:23,536 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:02:23,536 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:02:23,537 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:02:23,537 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:02:23,537 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:02:23,538 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:02:23,538 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:02:23,538 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:02:23,539 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:02:23,539 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:02:23,539 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:02:23,540 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:02:23,540 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:02:23,540 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:02:23,540 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:02:23,540 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:02:23,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:02:23,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:02:23,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:02:23,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:02:23,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:02:23,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:02:23,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:02:23,544 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:02:23,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:02:23,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:02:23,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:02:23,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:02:23,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:02:23,545 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:02:23,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:02:23,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:02:23,545 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:02:23,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:02:23,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:02:23,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:02:23,547 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29677964-3c0f-4489-8d38-1d38cd76e9ee/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29677964-3c0f-4489-8d38-1d38cd76e9ee/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29824587617da9a02b15e9129afbb9cf5ee59d8d3dbb506aa4fe0ed84097e2f1 [2022-11-03 02:02:23,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:02:23,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:02:23,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:02:23,907 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:02:23,908 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:02:23,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29677964-3c0f-4489-8d38-1d38cd76e9ee/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i [2022-11-03 02:02:23,988 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29677964-3c0f-4489-8d38-1d38cd76e9ee/bin/utaipan-7li7fVZpFI/data/2551c670d/160360ca3ba6416bb2452770719c656a/FLAGccd0ea085 [2022-11-03 02:02:24,874 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:02:24,875 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29677964-3c0f-4489-8d38-1d38cd76e9ee/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i [2022-11-03 02:02:24,942 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29677964-3c0f-4489-8d38-1d38cd76e9ee/bin/utaipan-7li7fVZpFI/data/2551c670d/160360ca3ba6416bb2452770719c656a/FLAGccd0ea085 [2022-11-03 02:02:25,314 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29677964-3c0f-4489-8d38-1d38cd76e9ee/bin/utaipan-7li7fVZpFI/data/2551c670d/160360ca3ba6416bb2452770719c656a [2022-11-03 02:02:25,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:02:25,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:02:25,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:02:25,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:02:25,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:02:25,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:02:25" (1/1) ... [2022-11-03 02:02:25,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40fa6ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:25, skipping insertion in model container [2022-11-03 02:02:25,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:02:25" (1/1) ... [2022-11-03 02:02:25,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:02:25,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:02:28,278 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_29677964-3c0f-4489-8d38-1d38cd76e9ee/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i[314027,314040] [2022-11-03 02:02:28,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:02:28,737 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:02:29,150 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_29677964-3c0f-4489-8d38-1d38cd76e9ee/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i[314027,314040] [2022-11-03 02:02:29,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:02:29,386 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:02:29,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29 WrapperNode [2022-11-03 02:02:29,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:02:29,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:02:29,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:02:29,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:02:29,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29" (1/1) ... [2022-11-03 02:02:29,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29" (1/1) ... [2022-11-03 02:02:29,781 INFO L138 Inliner]: procedures = 451, calls = 4094, calls flagged for inlining = 167, calls inlined = 83, statements flattened = 4783 [2022-11-03 02:02:29,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:02:29,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:02:29,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:02:29,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:02:29,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29" (1/1) ... [2022-11-03 02:02:29,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29" (1/1) ... [2022-11-03 02:02:29,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29" (1/1) ... [2022-11-03 02:02:29,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29" (1/1) ... [2022-11-03 02:02:30,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29" (1/1) ... [2022-11-03 02:02:30,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29" (1/1) ... [2022-11-03 02:02:30,138 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29" (1/1) ... [2022-11-03 02:02:30,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29" (1/1) ... [2022-11-03 02:02:30,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:02:30,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:02:30,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:02:30,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:02:30,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29" (1/1) ... [2022-11-03 02:02:30,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:02:30,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29677964-3c0f-4489-8d38-1d38cd76e9ee/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:02:30,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29677964-3c0f-4489-8d38-1d38cd76e9ee/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:02:30,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29677964-3c0f-4489-8d38-1d38cd76e9ee/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:02:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure smi_stats_proc_open [2022-11-03 02:02:30,278 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_stats_proc_open [2022-11-03 02:02:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:02:30,279 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:02:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-03 02:02:30,279 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-03 02:02:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:02:30,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:02:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~bool~0~TO~VOID [2022-11-03 02:02:30,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~bool~0~TO~VOID [2022-11-03 02:02:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_poll [2022-11-03 02:02:30,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_poll [2022-11-03 02:02:30,280 INFO L130 BoogieDeclarations]: Found specification of procedure handle_lan_get_msg_cmd [2022-11-03 02:02:30,280 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_lan_get_msg_cmd [2022-11-03 02:02:30,280 INFO L130 BoogieDeclarations]: Found specification of procedure handle_bmc_rsp [2022-11-03 02:02:30,280 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_bmc_rsp [2022-11-03 02:02:30,280 INFO L130 BoogieDeclarations]: Found specification of procedure __write_once_size [2022-11-03 02:02:30,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __write_once_size [2022-11-03 02:02:30,280 INFO L130 BoogieDeclarations]: Found specification of procedure format_lan_msg [2022-11-03 02:02:30,280 INFO L138 BoogieDeclarations]: Found implementation of procedure format_lan_msg [2022-11-03 02:02:30,281 INFO L130 BoogieDeclarations]: Found specification of procedure copy_event_into_recv_msg [2022-11-03 02:02:30,281 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_event_into_recv_msg [2022-11-03 02:02:30,281 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_panic_request_and_wait [2022-11-03 02:02:30,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_panic_request_and_wait [2022-11-03 02:02:30,281 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:02:30,281 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:02:30,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_cmd_rcvrs_mutex_of_ipmi_smi [2022-11-03 02:02:30,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_cmd_rcvrs_mutex_of_ipmi_smi [2022-11-03 02:02:30,282 INFO L130 BoogieDeclarations]: Found specification of procedure handle_oem_get_msg_cmd [2022-11-03 02:02:30,282 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_oem_get_msg_cmd [2022-11-03 02:02:30,282 INFO L130 BoogieDeclarations]: Found specification of procedure need_waiter [2022-11-03 02:02:30,282 INFO L138 BoogieDeclarations]: Found implementation of procedure need_waiter [2022-11-03 02:02:30,283 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-03 02:02:30,283 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 02:02:30,283 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 02:02:30,283 INFO L130 BoogieDeclarations]: Found specification of procedure smi_send [2022-11-03 02:02:30,283 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_send [2022-11-03 02:02:30,283 INFO L130 BoogieDeclarations]: Found specification of procedure smi_add_send_msg [2022-11-03 02:02:30,283 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_add_send_msg [2022-11-03 02:02:30,283 INFO L130 BoogieDeclarations]: Found specification of procedure intf_next_seq [2022-11-03 02:02:30,283 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_next_seq [2022-11-03 02:02:30,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:02:30,284 INFO L130 BoogieDeclarations]: Found specification of procedure PDE_DATA [2022-11-03 02:02:30,284 INFO L138 BoogieDeclarations]: Found implementation of procedure PDE_DATA [2022-11-03 02:02:30,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_cmd_rcvrs_mutex_of_ipmi_smi [2022-11-03 02:02:30,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_cmd_rcvrs_mutex_of_ipmi_smi [2022-11-03 02:02:30,285 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 02:02:30,285 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 02:02:30,285 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 02:02:30,286 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 02:02:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure i_ipmi_request [2022-11-03 02:02:30,287 INFO L138 BoogieDeclarations]: Found implementation of procedure i_ipmi_request [2022-11-03 02:02:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:02:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure free_smi_msg_list [2022-11-03 02:02:30,287 INFO L138 BoogieDeclarations]: Found implementation of procedure free_smi_msg_list [2022-11-03 02:02:30,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:02:30,288 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~ipmi_smi_t~0~X~$Pointer$~TO~VOID [2022-11-03 02:02:30,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~ipmi_smi_t~0~X~$Pointer$~TO~VOID [2022-11-03 02:02:30,288 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-11-03 02:02:30,288 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-11-03 02:02:30,289 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-11-03 02:02:30,289 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-11-03 02:02:30,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:02:30,289 INFO L130 BoogieDeclarations]: Found specification of procedure deliver_err_response [2022-11-03 02:02:30,289 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver_err_response [2022-11-03 02:02:30,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:02:30,289 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:02:30,289 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-11-03 02:02:30,289 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-11-03 02:02:30,290 INFO L130 BoogieDeclarations]: Found specification of procedure maintenance_mode_update [2022-11-03 02:02:30,290 INFO L138 BoogieDeclarations]: Found implementation of procedure maintenance_mode_update [2022-11-03 02:02:30,290 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-03 02:02:30,291 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-03 02:02:30,291 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-03 02:02:30,291 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-03 02:02:30,291 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-03 02:02:30,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-03 02:02:30,291 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2022-11-03 02:02:30,291 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2022-11-03 02:02:30,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:02:30,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:02:30,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:02:30,292 INFO L130 BoogieDeclarations]: Found specification of procedure smi_version_proc_open [2022-11-03 02:02:30,292 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_version_proc_open [2022-11-03 02:02:30,293 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2022-11-03 02:02:30,293 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2022-11-03 02:02:30,293 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-03 02:02:30,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-03 02:02:30,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:02:30,294 INFO L130 BoogieDeclarations]: Found specification of procedure send_channel_info_cmd [2022-11-03 02:02:30,294 INFO L138 BoogieDeclarations]: Found implementation of procedure send_channel_info_cmd [2022-11-03 02:02:30,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:02:30,295 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:02:30,295 INFO L130 BoogieDeclarations]: Found specification of procedure handle_one_recv_msg [2022-11-03 02:02:30,295 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_one_recv_msg [2022-11-03 02:02:30,295 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:02:30,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:02:30,296 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-03 02:02:30,296 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-03 02:02:30,296 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_smi_msg [2022-11-03 02:02:30,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_smi_msg [2022-11-03 02:02:30,296 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 02:02:30,296 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 02:02:30,296 INFO L130 BoogieDeclarations]: Found specification of procedure handle_new_recv_msgs [2022-11-03 02:02:30,297 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_new_recv_msgs [2022-11-03 02:02:30,297 INFO L130 BoogieDeclarations]: Found specification of procedure is_lan_addr [2022-11-03 02:02:30,297 INFO L138 BoogieDeclarations]: Found implementation of procedure is_lan_addr [2022-11-03 02:02:30,297 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:02:30,297 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:02:30,298 INFO L130 BoogieDeclarations]: Found specification of procedure intf_free [2022-11-03 02:02:30,298 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_free [2022-11-03 02:02:30,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:02:30,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:02:30,301 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2022-11-03 02:02:30,301 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-03 02:02:30,302 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-03 02:02:30,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:02:30,303 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_smi_msg_received [2022-11-03 02:02:30,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_smi_msg_received [2022-11-03 02:02:30,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:02:30,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:02:30,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:02:30,308 INFO L130 BoogieDeclarations]: Found specification of procedure intf_find_seq [2022-11-03 02:02:30,308 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_find_seq [2022-11-03 02:02:30,309 INFO L130 BoogieDeclarations]: Found specification of procedure handle_read_event_rsp [2022-11-03 02:02:30,309 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_read_event_rsp [2022-11-03 02:02:30,309 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2022-11-03 02:02:30,309 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2022-11-03 02:02:30,309 INFO L130 BoogieDeclarations]: Found specification of procedure handle_ipmb_get_msg_cmd [2022-11-03 02:02:30,309 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_ipmb_get_msg_cmd [2022-11-03 02:02:30,309 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:02:30,309 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:02:30,309 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:02:30,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:02:30,310 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 02:02:30,310 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 02:02:30,310 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:02:30,310 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:02:30,310 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_smi_msg [2022-11-03 02:02:30,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_smi_msg [2022-11-03 02:02:30,310 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 02:02:30,310 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 02:02:30,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2022-11-03 02:02:30,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2022-11-03 02:02:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:02:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:02:30,311 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:02:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure proc_mkdir [2022-11-03 02:02:30,311 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_mkdir [2022-11-03 02:02:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:02:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2022-11-03 02:02:30,311 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2022-11-03 02:02:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:02:30,312 INFO L130 BoogieDeclarations]: Found specification of procedure find_cmd_rcvr [2022-11-03 02:02:30,312 INFO L138 BoogieDeclarations]: Found implementation of procedure find_cmd_rcvr [2022-11-03 02:02:30,312 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-03 02:02:30,312 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-03 02:02:30,312 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_init_msghandler [2022-11-03 02:02:30,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_init_msghandler [2022-11-03 02:02:30,312 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 02:02:30,312 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 02:02:30,312 INFO L130 BoogieDeclarations]: Found specification of procedure clean_up_interface_data [2022-11-03 02:02:30,313 INFO L138 BoogieDeclarations]: Found implementation of procedure clean_up_interface_data [2022-11-03 02:02:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_recv_msg [2022-11-03 02:02:30,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_recv_msg [2022-11-03 02:02:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure handle_ipmb_get_msg_rsp [2022-11-03 02:02:30,313 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_ipmb_get_msg_rsp [2022-11-03 02:02:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2022-11-03 02:02:30,313 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2022-11-03 02:02:30,314 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_rcu [2022-11-03 02:02:30,314 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_rcu [2022-11-03 02:02:30,314 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2022-11-03 02:02:30,314 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2022-11-03 02:02:30,314 INFO L130 BoogieDeclarations]: Found specification of procedure smi_ipmb_proc_open [2022-11-03 02:02:30,314 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_ipmb_proc_open [2022-11-03 02:02:30,314 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:02:30,314 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:02:30,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:02:30,314 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-11-03 02:02:30,315 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2022-11-03 02:02:30,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:02:30,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:02:30,315 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_addr [2022-11-03 02:02:30,315 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_addr [2022-11-03 02:02:30,317 INFO L130 BoogieDeclarations]: Found specification of procedure handle_lan_get_msg_rsp [2022-11-03 02:02:30,317 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_lan_get_msg_rsp [2022-11-03 02:02:30,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:02:30,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:02:30,317 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_bcast_addr [2022-11-03 02:02:30,317 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_bcast_addr [2022-11-03 02:02:30,317 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-03 02:02:30,317 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-03 02:02:30,317 INFO L130 BoogieDeclarations]: Found specification of procedure format_ipmb_msg [2022-11-03 02:02:30,318 INFO L138 BoogieDeclarations]: Found implementation of procedure format_ipmb_msg [2022-11-03 02:02:30,318 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-03 02:02:30,318 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-03 02:02:30,318 INFO L130 BoogieDeclarations]: Found specification of procedure free_recv_msg_list [2022-11-03 02:02:30,318 INFO L138 BoogieDeclarations]: Found implementation of procedure free_recv_msg_list [2022-11-03 02:02:30,318 INFO L130 BoogieDeclarations]: Found specification of procedure intf_err_seq [2022-11-03 02:02:30,318 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_err_seq [2022-11-03 02:02:30,318 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-03 02:02:30,318 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-03 02:02:30,318 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 02:02:30,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 02:02:30,319 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_timeout [2022-11-03 02:02:30,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_timeout [2022-11-03 02:02:30,319 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2022-11-03 02:02:30,319 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2022-11-03 02:02:30,319 INFO L130 BoogieDeclarations]: Found specification of procedure smi_recv_tasklet [2022-11-03 02:02:30,319 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_recv_tasklet [2022-11-03 02:02:30,319 INFO L130 BoogieDeclarations]: Found specification of procedure ipmb_checksum [2022-11-03 02:02:30,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmb_checksum [2022-11-03 02:02:30,319 INFO L130 BoogieDeclarations]: Found specification of procedure deliver_response [2022-11-03 02:02:30,319 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver_response [2022-11-03 02:02:30,320 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2022-11-03 02:02:30,320 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2022-11-03 02:02:30,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:02:30,320 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-03 02:02:30,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-03 02:02:30,320 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_recv_msg [2022-11-03 02:02:30,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_recv_msg [2022-11-03 02:02:30,320 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-03 02:02:31,186 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:02:31,192 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:02:31,866 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:02:43,006 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:02:44,401 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:02:44,401 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:02:44,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:02:44 BoogieIcfgContainer [2022-11-03 02:02:44,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:02:44,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:02:44,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:02:44,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:02:44,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:02:25" (1/3) ... [2022-11-03 02:02:44,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c27b40d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:02:44, skipping insertion in model container [2022-11-03 02:02:44,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29" (2/3) ... [2022-11-03 02:02:44,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c27b40d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:02:44, skipping insertion in model container [2022-11-03 02:02:44,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:02:44" (3/3) ... [2022-11-03 02:02:44,421 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i [2022-11-03 02:02:44,440 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:02:44,440 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:02:44,549 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:02:44,555 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@128dff6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:02:44,556 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:02:44,564 INFO L276 IsEmpty]: Start isEmpty. Operand has 1473 states, 896 states have (on average 1.3850446428571428) internal successors, (1241), 991 states have internal predecessors, (1241), 475 states have call successors, (475), 101 states have call predecessors, (475), 100 states have return successors, (457), 437 states have call predecessors, (457), 457 states have call successors, (457) [2022-11-03 02:02:44,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2022-11-03 02:02:44,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:44,590 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:44,591 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:44,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:44,596 INFO L85 PathProgramCache]: Analyzing trace with hash 783187336, now seen corresponding path program 1 times [2022-11-03 02:02:44,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:44,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837818972] [2022-11-03 02:02:44,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:44,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:46,653 INFO L134 CoverageAnalysis]: Checked inductivity of 7965 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7965 trivial. 0 not checked. [2022-11-03 02:02:46,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:46,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837818972] [2022-11-03 02:02:46,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837818972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:46,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:46,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:02:46,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130227533] [2022-11-03 02:02:46,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:46,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:02:46,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:46,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:02:46,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:46,707 INFO L87 Difference]: Start difference. First operand has 1473 states, 896 states have (on average 1.3850446428571428) internal successors, (1241), 991 states have internal predecessors, (1241), 475 states have call successors, (475), 101 states have call predecessors, (475), 100 states have return successors, (457), 437 states have call predecessors, (457), 457 states have call successors, (457) Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2022-11-03 02:02:48,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:51,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:51,339 INFO L93 Difference]: Finished difference Result 4132 states and 6232 transitions. [2022-11-03 02:02:51,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:02:51,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) Word has length 551 [2022-11-03 02:02:51,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:51,397 INFO L225 Difference]: With dead ends: 4132 [2022-11-03 02:02:51,397 INFO L226 Difference]: Without dead ends: 2725 [2022-11-03 02:02:51,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:51,434 INFO L413 NwaCegarLoop]: 2366 mSDtfsCounter, 1925 mSDsluCounter, 2118 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1925 SdHoareTripleChecker+Valid, 4320 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:51,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1925 Valid, 4320 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 346 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-11-03 02:02:51,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2725 states. [2022-11-03 02:02:51,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2725 to 2721. [2022-11-03 02:02:51,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 1693 states have (on average 1.3738924985233314) internal successors, (2326), 1833 states have internal predecessors, (2326), 834 states have call successors, (834), 194 states have call predecessors, (834), 193 states have return successors, (824), 784 states have call predecessors, (824), 824 states have call successors, (824) [2022-11-03 02:02:51,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 3984 transitions. [2022-11-03 02:02:51,738 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 3984 transitions. Word has length 551 [2022-11-03 02:02:51,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:51,746 INFO L495 AbstractCegarLoop]: Abstraction has 2721 states and 3984 transitions. [2022-11-03 02:02:51,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2022-11-03 02:02:51,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 3984 transitions. [2022-11-03 02:02:51,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2022-11-03 02:02:51,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:51,784 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:51,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:02:51,785 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:51,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:51,786 INFO L85 PathProgramCache]: Analyzing trace with hash 748791414, now seen corresponding path program 1 times [2022-11-03 02:02:51,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:51,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429105875] [2022-11-03 02:02:51,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:51,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:53,352 INFO L134 CoverageAnalysis]: Checked inductivity of 7965 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7965 trivial. 0 not checked. [2022-11-03 02:02:53,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:53,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429105875] [2022-11-03 02:02:53,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429105875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:53,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:53,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:02:53,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636793352] [2022-11-03 02:02:53,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:53,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:02:53,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:53,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:02:53,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:02:53,360 INFO L87 Difference]: Start difference. First operand 2721 states and 3984 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (55), 3 states have call predecessors, (55), 2 states have return successors, (54), 3 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-03 02:02:55,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:09,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:11,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:14,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:16,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:18,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:18,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:18,698 INFO L93 Difference]: Finished difference Result 7923 states and 11603 transitions. [2022-11-03 02:03:18,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:03:18,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (55), 3 states have call predecessors, (55), 2 states have return successors, (54), 3 states have call predecessors, (54), 2 states have call successors, (54) Word has length 558 [2022-11-03 02:03:18,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:18,729 INFO L225 Difference]: With dead ends: 7923 [2022-11-03 02:03:18,730 INFO L226 Difference]: Without dead ends: 5308 [2022-11-03 02:03:18,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:03:18,742 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 2967 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 4951 mSolverCounterSat, 1907 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3354 SdHoareTripleChecker+Valid, 2546 SdHoareTripleChecker+Invalid, 6862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1907 IncrementalHoareTripleChecker+Valid, 4951 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:18,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3354 Valid, 2546 Invalid, 6862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1907 Valid, 4951 Invalid, 4 Unknown, 0 Unchecked, 24.8s Time] [2022-11-03 02:03:18,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5308 states. [2022-11-03 02:03:19,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5308 to 5287. [2022-11-03 02:03:19,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5287 states, 3306 states have (on average 1.3790078644888082) internal successors, (4559), 3577 states have internal predecessors, (4559), 1597 states have call successors, (1597), 383 states have call predecessors, (1597), 383 states have return successors, (1590), 1507 states have call predecessors, (1590), 1587 states have call successors, (1590) [2022-11-03 02:03:19,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5287 states to 5287 states and 7746 transitions. [2022-11-03 02:03:19,065 INFO L78 Accepts]: Start accepts. Automaton has 5287 states and 7746 transitions. Word has length 558 [2022-11-03 02:03:19,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:19,066 INFO L495 AbstractCegarLoop]: Abstraction has 5287 states and 7746 transitions. [2022-11-03 02:03:19,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (55), 3 states have call predecessors, (55), 2 states have return successors, (54), 3 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-03 02:03:19,067 INFO L276 IsEmpty]: Start isEmpty. Operand 5287 states and 7746 transitions. [2022-11-03 02:03:19,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2022-11-03 02:03:19,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:19,080 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:19,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:03:19,082 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:19,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:19,092 INFO L85 PathProgramCache]: Analyzing trace with hash 2082821007, now seen corresponding path program 1 times [2022-11-03 02:03:19,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:19,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296426586] [2022-11-03 02:03:19,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:19,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:20,035 INFO L134 CoverageAnalysis]: Checked inductivity of 7965 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7965 trivial. 0 not checked. [2022-11-03 02:03:20,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:20,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296426586] [2022-11-03 02:03:20,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296426586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:20,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:20,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:03:20,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287443460] [2022-11-03 02:03:20,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:20,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:03:20,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:20,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:03:20,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:20,040 INFO L87 Difference]: Start difference. First operand 5287 states and 7746 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2022-11-03 02:03:22,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:25,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:25,137 INFO L93 Difference]: Finished difference Result 9261 states and 13542 transitions. [2022-11-03 02:03:25,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:03:25,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) Word has length 559 [2022-11-03 02:03:25,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:25,160 INFO L225 Difference]: With dead ends: 9261 [2022-11-03 02:03:25,161 INFO L226 Difference]: Without dead ends: 4080 [2022-11-03 02:03:25,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:25,180 INFO L413 NwaCegarLoop]: 3691 mSDtfsCounter, 1963 mSDsluCounter, 2056 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1963 SdHoareTripleChecker+Valid, 5586 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:25,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1963 Valid, 5586 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 491 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-11-03 02:03:25,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4080 states. [2022-11-03 02:03:25,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4080 to 4074. [2022-11-03 02:03:25,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4074 states, 2540 states have (on average 1.373228346456693) internal successors, (3488), 2750 states have internal predecessors, (3488), 1231 states have call successors, (1231), 301 states have call predecessors, (1231), 302 states have return successors, (1225), 1160 states have call predecessors, (1225), 1221 states have call successors, (1225) [2022-11-03 02:03:25,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4074 states to 4074 states and 5944 transitions. [2022-11-03 02:03:25,399 INFO L78 Accepts]: Start accepts. Automaton has 4074 states and 5944 transitions. Word has length 559 [2022-11-03 02:03:25,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:25,400 INFO L495 AbstractCegarLoop]: Abstraction has 4074 states and 5944 transitions. [2022-11-03 02:03:25,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2022-11-03 02:03:25,400 INFO L276 IsEmpty]: Start isEmpty. Operand 4074 states and 5944 transitions. [2022-11-03 02:03:25,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2022-11-03 02:03:25,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:25,419 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:25,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:03:25,420 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:25,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:25,423 INFO L85 PathProgramCache]: Analyzing trace with hash -584307417, now seen corresponding path program 1 times [2022-11-03 02:03:25,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:25,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346072119] [2022-11-03 02:03:25,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:25,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:26,627 INFO L134 CoverageAnalysis]: Checked inductivity of 7969 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2022-11-03 02:03:26,627 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:26,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346072119] [2022-11-03 02:03:26,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346072119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:26,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:26,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:03:26,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423896136] [2022-11-03 02:03:26,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:26,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:03:26,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:26,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:03:26,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:03:26,630 INFO L87 Difference]: Start difference. First operand 4074 states and 5944 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-03 02:03:29,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:35,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:35,928 INFO L93 Difference]: Finished difference Result 15934 states and 23531 transitions. [2022-11-03 02:03:35,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:03:35,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 610 [2022-11-03 02:03:35,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:35,996 INFO L225 Difference]: With dead ends: 15934 [2022-11-03 02:03:35,996 INFO L226 Difference]: Without dead ends: 11976 [2022-11-03 02:03:36,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:03:36,023 INFO L413 NwaCegarLoop]: 2766 mSDtfsCounter, 3911 mSDsluCounter, 4669 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3911 SdHoareTripleChecker+Valid, 7025 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:36,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3911 Valid, 7025 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1456 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-11-03 02:03:36,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11976 states. [2022-11-03 02:03:36,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11976 to 11908. [2022-11-03 02:03:36,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11908 states, 7468 states have (on average 1.37747723620782) internal successors, (10287), 8064 states have internal predecessors, (10287), 3549 states have call successors, (3549), 885 states have call predecessors, (3549), 890 states have return successors, (3816), 3360 states have call predecessors, (3816), 3539 states have call successors, (3816) [2022-11-03 02:03:36,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11908 states to 11908 states and 17652 transitions. [2022-11-03 02:03:36,927 INFO L78 Accepts]: Start accepts. Automaton has 11908 states and 17652 transitions. Word has length 610 [2022-11-03 02:03:36,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:36,928 INFO L495 AbstractCegarLoop]: Abstraction has 11908 states and 17652 transitions. [2022-11-03 02:03:36,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-03 02:03:36,930 INFO L276 IsEmpty]: Start isEmpty. Operand 11908 states and 17652 transitions. [2022-11-03 02:03:36,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2022-11-03 02:03:36,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:36,937 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:36,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:03:36,937 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:36,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:36,938 INFO L85 PathProgramCache]: Analyzing trace with hash 2118715650, now seen corresponding path program 1 times [2022-11-03 02:03:36,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:36,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973702206] [2022-11-03 02:03:36,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:36,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 7969 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2022-11-03 02:03:38,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:38,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973702206] [2022-11-03 02:03:38,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973702206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:38,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:38,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:03:38,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146123680] [2022-11-03 02:03:38,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:38,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:03:38,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:38,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:03:38,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:03:38,076 INFO L87 Difference]: Start difference. First operand 11908 states and 17652 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-03 02:03:40,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:47,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:47,037 INFO L93 Difference]: Finished difference Result 47258 states and 71369 transitions. [2022-11-03 02:03:47,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:03:47,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 611 [2022-11-03 02:03:47,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:47,241 INFO L225 Difference]: With dead ends: 47258 [2022-11-03 02:03:47,241 INFO L226 Difference]: Without dead ends: 35466 [2022-11-03 02:03:47,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:03:47,305 INFO L413 NwaCegarLoop]: 2748 mSDtfsCounter, 3910 mSDsluCounter, 4667 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3910 SdHoareTripleChecker+Valid, 7005 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:47,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3910 Valid, 7005 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1444 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-11-03 02:03:47,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35466 states. [2022-11-03 02:03:49,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35466 to 35398. [2022-11-03 02:03:49,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35398 states, 22252 states have (on average 1.3782581341003055) internal successors, (30669), 23994 states have internal predecessors, (30669), 10491 states have call successors, (10491), 2637 states have call predecessors, (10491), 2654 states have return successors, (12607), 9960 states have call predecessors, (12607), 10481 states have call successors, (12607) [2022-11-03 02:03:50,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35398 states to 35398 states and 53767 transitions. [2022-11-03 02:03:50,113 INFO L78 Accepts]: Start accepts. Automaton has 35398 states and 53767 transitions. Word has length 611 [2022-11-03 02:03:50,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:50,115 INFO L495 AbstractCegarLoop]: Abstraction has 35398 states and 53767 transitions. [2022-11-03 02:03:50,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-03 02:03:50,115 INFO L276 IsEmpty]: Start isEmpty. Operand 35398 states and 53767 transitions. [2022-11-03 02:03:50,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2022-11-03 02:03:50,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:50,131 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:50,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:03:50,132 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:50,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:50,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1790283343, now seen corresponding path program 1 times [2022-11-03 02:03:50,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:50,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645621501] [2022-11-03 02:03:50,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:50,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:51,477 INFO L134 CoverageAnalysis]: Checked inductivity of 7969 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2022-11-03 02:03:51,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:51,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645621501] [2022-11-03 02:03:51,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645621501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:51,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:51,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:03:51,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64797511] [2022-11-03 02:03:51,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:51,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:03:51,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:51,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:03:51,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:03:51,481 INFO L87 Difference]: Start difference. First operand 35398 states and 53767 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-03 02:03:53,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:03,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:04:03,751 INFO L93 Difference]: Finished difference Result 141182 states and 220115 transitions. [2022-11-03 02:04:03,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:04:03,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 612 [2022-11-03 02:04:03,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:04:04,802 INFO L225 Difference]: With dead ends: 141182 [2022-11-03 02:04:04,802 INFO L226 Difference]: Without dead ends: 105900 [2022-11-03 02:04:04,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:04:05,000 INFO L413 NwaCegarLoop]: 2756 mSDtfsCounter, 5057 mSDsluCounter, 3360 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 805 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5057 SdHoareTripleChecker+Valid, 5788 SdHoareTripleChecker+Invalid, 2117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 805 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:04:05,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5057 Valid, 5788 Invalid, 2117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [805 Valid, 1311 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-11-03 02:04:05,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105900 states. [2022-11-03 02:04:12,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105900 to 105832. [2022-11-03 02:04:12,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105832 states, 66604 states have (on average 1.3778902168037956) internal successors, (91773), 71748 states have internal predecessors, (91773), 31281 states have call successors, (31281), 7893 states have call predecessors, (31281), 7946 states have return successors, (43302), 29760 states have call predecessors, (43302), 31271 states have call successors, (43302) [2022-11-03 02:04:13,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105832 states to 105832 states and 166356 transitions. [2022-11-03 02:04:13,624 INFO L78 Accepts]: Start accepts. Automaton has 105832 states and 166356 transitions. Word has length 612 [2022-11-03 02:04:13,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:04:13,625 INFO L495 AbstractCegarLoop]: Abstraction has 105832 states and 166356 transitions. [2022-11-03 02:04:13,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-03 02:04:13,626 INFO L276 IsEmpty]: Start isEmpty. Operand 105832 states and 166356 transitions. [2022-11-03 02:04:13,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2022-11-03 02:04:13,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:04:13,634 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:04:13,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:04:13,635 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:04:13,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:04:13,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1976014954, now seen corresponding path program 1 times [2022-11-03 02:04:13,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:04:13,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032620449] [2022-11-03 02:04:13,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:13,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:04:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:14,690 INFO L134 CoverageAnalysis]: Checked inductivity of 7969 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2022-11-03 02:04:14,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:04:14,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032620449] [2022-11-03 02:04:14,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032620449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:04:14,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:04:14,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:04:14,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093611167] [2022-11-03 02:04:14,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:04:14,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:04:14,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:04:14,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:04:14,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:04:14,693 INFO L87 Difference]: Start difference. First operand 105832 states and 166356 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-03 02:04:16,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:37,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:04:37,396 INFO L93 Difference]: Finished difference Result 420440 states and 686280 transitions. [2022-11-03 02:04:37,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:04:37,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 613 [2022-11-03 02:04:37,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:04:40,392 INFO L225 Difference]: With dead ends: 420440 [2022-11-03 02:04:40,392 INFO L226 Difference]: Without dead ends: 314724 [2022-11-03 02:04:40,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:04:40,893 INFO L413 NwaCegarLoop]: 2744 mSDtfsCounter, 5055 mSDsluCounter, 3360 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 805 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5055 SdHoareTripleChecker+Valid, 5776 SdHoareTripleChecker+Invalid, 2117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 805 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:04:40,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5055 Valid, 5776 Invalid, 2117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [805 Valid, 1311 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2022-11-03 02:04:41,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314724 states.