./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--scsi--initio.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c59440-89d4-488b-95e5-9a5bd4297b3f/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c59440-89d4-488b-95e5-9a5bd4297b3f/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c59440-89d4-488b-95e5-9a5bd4297b3f/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c59440-89d4-488b-95e5-9a5bd4297b3f/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--initio.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c59440-89d4-488b-95e5-9a5bd4297b3f/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c59440-89d4-488b-95e5-9a5bd4297b3f/bin/utaipan-G1rejxKTta --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 9a12ad8c8f82d9497d9fb295ce6f252aae97c90123ce998a3f7bb078893d44d4 --- 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-dbf71c6-m [2022-10-17 17:22:11,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:22:11,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:22:11,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:22:11,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:22:11,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:22:11,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:22:11,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:22:11,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:22:11,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:22:11,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:22:11,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:22:11,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:22:11,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:22:11,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:22:11,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:22:11,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:22:11,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:22:11,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:22:11,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:22:11,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:22:11,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:22:11,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:22:11,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:22:11,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:22:11,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:22:11,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:22:11,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:22:11,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:22:11,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:22:11,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:22:11,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:22:11,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:22:11,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:22:11,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:22:11,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:22:11,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:22:11,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:22:11,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:22:11,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:22:11,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:22:11,232 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c59440-89d4-488b-95e5-9a5bd4297b3f/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-10-17 17:22:11,299 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:22:11,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:22:11,300 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:22:11,301 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:22:11,302 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:22:11,302 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:22:11,302 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:22:11,302 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:22:11,303 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:22:11,303 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:22:11,304 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:22:11,304 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:22:11,304 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:22:11,305 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:22:11,305 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:22:11,305 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:22:11,306 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:22:11,306 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:22:11,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:22:11,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:22:11,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:22:11,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:22:11,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:22:11,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:22:11,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:22:11,308 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:22:11,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:22:11,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:22:11,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:22:11,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:22:11,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:22:11,317 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:22:11,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:22:11,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:22:11,317 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:22:11,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:22:11,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:22:11,318 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:22:11,318 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_e9c59440-89d4-488b-95e5-9a5bd4297b3f/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c59440-89d4-488b-95e5-9a5bd4297b3f/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a12ad8c8f82d9497d9fb295ce6f252aae97c90123ce998a3f7bb078893d44d4 [2022-10-17 17:22:11,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:22:11,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:22:11,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:22:11,664 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:22:11,664 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:22:11,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c59440-89d4-488b-95e5-9a5bd4297b3f/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--initio.ko-entry_point.cil.out.i [2022-10-17 17:22:11,739 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c59440-89d4-488b-95e5-9a5bd4297b3f/bin/utaipan-G1rejxKTta/data/1a52ba046/0e1c8bae7d6b49c993f45e3abd95a530/FLAGf06da7e71 [2022-10-17 17:22:12,641 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:22:12,642 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c59440-89d4-488b-95e5-9a5bd4297b3f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--initio.ko-entry_point.cil.out.i [2022-10-17 17:22:12,678 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c59440-89d4-488b-95e5-9a5bd4297b3f/bin/utaipan-G1rejxKTta/data/1a52ba046/0e1c8bae7d6b49c993f45e3abd95a530/FLAGf06da7e71 [2022-10-17 17:22:13,104 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c59440-89d4-488b-95e5-9a5bd4297b3f/bin/utaipan-G1rejxKTta/data/1a52ba046/0e1c8bae7d6b49c993f45e3abd95a530 [2022-10-17 17:22:13,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:22:13,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:22:13,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:22:13,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:22:13,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:22:13,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:22:13" (1/1) ... [2022-10-17 17:22:13,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f44f57a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:13, skipping insertion in model container [2022-10-17 17:22:13,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:22:13" (1/1) ... [2022-10-17 17:22:13,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:22:13,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:22:15,467 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_e9c59440-89d4-488b-95e5-9a5bd4297b3f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--initio.ko-entry_point.cil.out.i[240484,240497] [2022-10-17 17:22:15,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:22:15,640 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:22:16,237 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_e9c59440-89d4-488b-95e5-9a5bd4297b3f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--initio.ko-entry_point.cil.out.i[240484,240497] [2022-10-17 17:22:16,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:22:16,360 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:22:16,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:16 WrapperNode [2022-10-17 17:22:16,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:22:16,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:22:16,363 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:22:16,363 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:22:16,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:16" (1/1) ... [2022-10-17 17:22:16,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:16" (1/1) ... [2022-10-17 17:22:16,650 INFO L138 Inliner]: procedures = 250, calls = 2028, calls flagged for inlining = 112, calls inlined = 108, statements flattened = 4636 [2022-10-17 17:22:16,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:22:16,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:22:16,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:22:16,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:22:16,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:16" (1/1) ... [2022-10-17 17:22:16,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:16" (1/1) ... [2022-10-17 17:22:16,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:16" (1/1) ... [2022-10-17 17:22:16,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:16" (1/1) ... [2022-10-17 17:22:16,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:16" (1/1) ... [2022-10-17 17:22:16,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:16" (1/1) ... [2022-10-17 17:22:16,973 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:16" (1/1) ... [2022-10-17 17:22:16,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:16" (1/1) ... [2022-10-17 17:22:17,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:22:17,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:22:17,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:22:17,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:22:17,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:16" (1/1) ... [2022-10-17 17:22:17,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:22:17,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c59440-89d4-488b-95e5-9a5bd4297b3f/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:22:17,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c59440-89d4-488b-95e5-9a5bd4297b3f/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:22:17,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c59440-89d4-488b-95e5-9a5bd4297b3f/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:22:17,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-17 17:22:17,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-17 17:22:17,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-17 17:22:17,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-17 17:22:17,130 INFO L130 BoogieDeclarations]: Found specification of procedure initio_status_msg [2022-10-17 17:22:17,130 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_status_msg [2022-10-17 17:22:17,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-10-17 17:22:17,130 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-10-17 17:22:17,131 INFO L130 BoogieDeclarations]: Found specification of procedure initio_select_atn_stop [2022-10-17 17:22:17,131 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_select_atn_stop [2022-10-17 17:22:17,131 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgin_accept [2022-10-17 17:22:17,131 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgin_accept [2022-10-17 17:22:17,131 INFO L130 BoogieDeclarations]: Found specification of procedure initio_remove_one [2022-10-17 17:22:17,132 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_remove_one [2022-10-17 17:22:17,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 17:22:17,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 17:22:17,132 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_bufflen [2022-10-17 17:22:17,132 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_bufflen [2022-10-17 17:22:17,132 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-10-17 17:22:17,133 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-10-17 17:22:17,133 INFO L130 BoogieDeclarations]: Found specification of procedure int_initio_scsi_rst [2022-10-17 17:22:17,133 INFO L138 BoogieDeclarations]: Found implementation of procedure int_initio_scsi_rst [2022-10-17 17:22:17,133 INFO L130 BoogieDeclarations]: Found specification of procedure initio_abort_srb [2022-10-17 17:22:17,133 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_abort_srb [2022-10-17 17:22:17,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 17:22:17,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 17:22:17,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_3 [2022-10-17 17:22:17,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_3 [2022-10-17 17:22:17,135 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-10-17 17:22:17,135 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-10-17 17:22:17,135 INFO L130 BoogieDeclarations]: Found specification of procedure initio_next_state [2022-10-17 17:22:17,135 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_next_state [2022-10-17 17:22:17,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-17 17:22:17,135 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-17 17:22:17,136 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 17:22:17,136 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 17:22:17,136 INFO L130 BoogieDeclarations]: Found specification of procedure initio_unlink_pend_scb [2022-10-17 17:22:17,136 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_unlink_pend_scb [2022-10-17 17:22:17,137 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-17 17:22:17,137 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-17 17:22:17,137 INFO L130 BoogieDeclarations]: Found specification of procedure initio_append_busy_scb [2022-10-17 17:22:17,137 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_append_busy_scb [2022-10-17 17:22:17,137 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-10-17 17:22:17,138 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-10-17 17:22:17,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:22:17,138 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgout_reject [2022-10-17 17:22:17,138 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgout_reject [2022-10-17 17:22:17,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:22:17,139 INFO L130 BoogieDeclarations]: Found specification of procedure initio_se2_rd_all [2022-10-17 17:22:17,140 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_se2_rd_all [2022-10-17 17:22:17,141 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-10-17 17:22:17,141 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-10-17 17:22:17,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:22:17,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 17:22:17,142 INFO L130 BoogieDeclarations]: Found specification of procedure initio_release_scb [2022-10-17 17:22:17,142 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_release_scb [2022-10-17 17:22:17,142 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_scsi [2022-10-17 17:22:17,142 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_scsi [2022-10-17 17:22:17,143 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-10-17 17:22:17,143 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-10-17 17:22:17,143 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-10-17 17:22:17,143 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-10-17 17:22:17,143 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-10-17 17:22:17,143 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-10-17 17:22:17,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-17 17:22:17,144 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-10-17 17:22:17,144 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-10-17 17:22:17,144 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgout_abort_targ [2022-10-17 17:22:17,144 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgout_abort_targ [2022-10-17 17:22:17,144 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-10-17 17:22:17,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-10-17 17:22:17,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-17 17:22:17,146 INFO L130 BoogieDeclarations]: Found specification of procedure initio_se2_instr [2022-10-17 17:22:17,146 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_se2_instr [2022-10-17 17:22:17,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:22:17,146 INFO L130 BoogieDeclarations]: Found specification of procedure initio_find_first_pend_scb [2022-10-17 17:22:17,146 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_find_first_pend_scb [2022-10-17 17:22:17,146 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-10-17 17:22:17,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-10-17 17:22:17,147 INFO L130 BoogieDeclarations]: Found specification of procedure initio_unlink_busy_scb [2022-10-17 17:22:17,147 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_unlink_busy_scb [2022-10-17 17:22:17,147 INFO L130 BoogieDeclarations]: Found specification of procedure initio_wait_done_disc [2022-10-17 17:22:17,148 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_wait_done_disc [2022-10-17 17:22:17,148 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-10-17 17:22:17,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-10-17 17:22:17,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:22:17,149 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-10-17 17:22:17,149 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-10-17 17:22:17,150 INFO L130 BoogieDeclarations]: Found specification of procedure initio_stop_bm [2022-10-17 17:22:17,150 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_stop_bm [2022-10-17 17:22:17,150 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-10-17 17:22:17,151 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-10-17 17:22:17,151 INFO L130 BoogieDeclarations]: Found specification of procedure wait_tulip [2022-10-17 17:22:17,151 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_tulip [2022-10-17 17:22:17,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 17:22:17,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 17:22:17,152 INFO L130 BoogieDeclarations]: Found specification of procedure initio_pop_busy_scb [2022-10-17 17:22:17,152 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_pop_busy_scb [2022-10-17 17:22:17,152 INFO L130 BoogieDeclarations]: Found specification of procedure initio_bad_seq [2022-10-17 17:22:17,153 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_bad_seq [2022-10-17 17:22:17,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-10-17 17:22:17,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-10-17 17:22:17,153 INFO L130 BoogieDeclarations]: Found specification of procedure int_initio_resel [2022-10-17 17:22:17,153 INFO L138 BoogieDeclarations]: Found implementation of procedure int_initio_resel [2022-10-17 17:22:17,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:22:17,154 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-10-17 17:22:17,154 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-10-17 17:22:17,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:22:17,154 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgout_abort_tag [2022-10-17 17:22:17,155 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgout_abort_tag [2022-10-17 17:22:17,156 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-10-17 17:22:17,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-10-17 17:22:17,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:22:17,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-10-17 17:22:17,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-10-17 17:22:17,159 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2022-10-17 17:22:17,160 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2022-10-17 17:22:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure initio_reset_scsi [2022-10-17 17:22:17,161 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_reset_scsi [2022-10-17 17:22:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure initio_append_done_scb [2022-10-17 17:22:17,168 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_append_done_scb [2022-10-17 17:22:17,169 INFO L130 BoogieDeclarations]: Found specification of procedure initio_append_pend_scb [2022-10-17 17:22:17,169 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_append_pend_scb [2022-10-17 17:22:17,169 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgin [2022-10-17 17:22:17,169 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgin [2022-10-17 17:22:17,169 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-10-17 17:22:17,169 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-10-17 17:22:17,170 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_main [2022-10-17 17:22:17,170 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_main [2022-10-17 17:22:17,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:22:17,170 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-10-17 17:22:17,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-10-17 17:22:17,170 INFO L130 BoogieDeclarations]: Found specification of procedure int_initio_busfree [2022-10-17 17:22:17,171 INFO L138 BoogieDeclarations]: Found implementation of procedure int_initio_busfree [2022-10-17 17:22:17,171 INFO L130 BoogieDeclarations]: Found specification of procedure initio_sync_done [2022-10-17 17:22:17,171 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_sync_done [2022-10-17 17:22:17,171 INFO L130 BoogieDeclarations]: Found specification of procedure initio_wait_disc [2022-10-17 17:22:17,171 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_wait_disc [2022-10-17 17:22:17,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:22:17,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:22:17,172 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_relax [2022-10-17 17:22:17,172 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_relax [2022-10-17 17:22:17,959 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:22:17,964 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:22:18,349 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-17 17:22:26,937 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:22:28,787 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:22:28,787 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:22:28,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:22:28 BoogieIcfgContainer [2022-10-17 17:22:28,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:22:28,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:22:28,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:22:28,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:22:28,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:22:13" (1/3) ... [2022-10-17 17:22:28,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e33cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:22:28, skipping insertion in model container [2022-10-17 17:22:28,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:16" (2/3) ... [2022-10-17 17:22:28,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e33cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:22:28, skipping insertion in model container [2022-10-17 17:22:28,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:22:28" (3/3) ... [2022-10-17 17:22:28,806 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--initio.ko-entry_point.cil.out.i [2022-10-17 17:22:28,827 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:22:28,827 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:22:28,965 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:22:28,974 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;@25030033, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:22:28,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:22:28,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 1507 states, 924 states have (on average 1.3322510822510822) internal successors, (1231), 961 states have internal predecessors, (1231), 519 states have call successors, (519), 63 states have call predecessors, (519), 62 states have return successors, (513), 507 states have call predecessors, (513), 513 states have call successors, (513) [2022-10-17 17:22:29,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-10-17 17:22:29,004 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:22:29,005 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:22:29,005 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:22:29,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:22:29,013 INFO L85 PathProgramCache]: Analyzing trace with hash -649512193, now seen corresponding path program 1 times [2022-10-17 17:22:29,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:22:29,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879959591] [2022-10-17 17:22:29,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:22:29,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:22:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:22:29,864 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-10-17 17:22:29,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:22:29,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879959591] [2022-10-17 17:22:29,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879959591] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:22:29,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:22:29,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:22:29,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709061769] [2022-10-17 17:22:29,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:22:29,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:22:29,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:22:29,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:22:29,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:22:29,926 INFO L87 Difference]: Start difference. First operand has 1507 states, 924 states have (on average 1.3322510822510822) internal successors, (1231), 961 states have internal predecessors, (1231), 519 states have call successors, (519), 63 states have call predecessors, (519), 62 states have return successors, (513), 507 states have call predecessors, (513), 513 states have call successors, (513) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-10-17 17:22:32,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-10-17 17:22:34,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:22:38,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:22:40,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:22:45,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:22:47,943 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 []