./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--md--dm-snapshot.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1f8f35-7b5d-441e-baf4-7bc62f6e6d9a/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1f8f35-7b5d-441e-baf4-7bc62f6e6d9a/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1f8f35-7b5d-441e-baf4-7bc62f6e6d9a/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1f8f35-7b5d-441e-baf4-7bc62f6e6d9a/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--md--dm-snapshot.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1f8f35-7b5d-441e-baf4-7bc62f6e6d9a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1f8f35-7b5d-441e-baf4-7bc62f6e6d9a/bin/utaipan-I9t0OCRTmS --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 d8e7c5aa7005923070e9554b87b5a04ee24ecedc3d8bb5799929a04800a522a8 --- 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-8393723 [2022-11-19 08:33:19,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:33:19,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:33:19,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:33:19,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:33:19,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:33:19,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:33:19,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:33:19,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:33:19,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:33:19,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:33:19,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:33:19,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:33:19,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:33:19,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:33:19,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:33:19,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:33:19,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:33:19,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:33:19,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:33:19,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:33:19,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:33:19,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:33:19,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:33:19,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:33:19,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:33:19,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:33:19,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:33:19,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:33:19,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:33:19,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:33:19,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:33:19,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:33:19,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:33:19,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:33:19,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:33:19,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:33:19,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:33:19,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:33:19,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:33:19,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:33:19,283 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1f8f35-7b5d-441e-baf4-7bc62f6e6d9a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:33:19,318 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:33:19,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:33:19,319 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:33:19,320 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:33:19,321 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:33:19,321 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:33:19,321 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:33:19,321 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:33:19,322 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:33:19,322 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:33:19,323 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:33:19,323 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:33:19,323 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:33:19,324 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:33:19,324 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:33:19,324 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:33:19,324 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:33:19,324 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:33:19,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:33:19,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:33:19,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:33:19,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:33:19,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:33:19,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:33:19,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:33:19,327 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:33:19,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:33:19,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:33:19,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:33:19,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:33:19,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:33:19,328 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:33:19,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:33:19,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:33:19,329 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:33:19,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:33:19,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:33:19,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:33:19,330 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_ca1f8f35-7b5d-441e-baf4-7bc62f6e6d9a/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1f8f35-7b5d-441e-baf4-7bc62f6e6d9a/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8e7c5aa7005923070e9554b87b5a04ee24ecedc3d8bb5799929a04800a522a8 [2022-11-19 08:33:19,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:33:19,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:33:19,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:33:19,612 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:33:19,613 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:33:19,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1f8f35-7b5d-441e-baf4-7bc62f6e6d9a/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--md--dm-snapshot.ko-entry_point.cil.out.i [2022-11-19 08:33:19,695 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1f8f35-7b5d-441e-baf4-7bc62f6e6d9a/bin/utaipan-I9t0OCRTmS/data/650124c54/53e8cea434b44c3f9ef6ecd4b6fd95ee/FLAGf06bf260d [2022-11-19 08:33:20,796 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:33:20,797 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1f8f35-7b5d-441e-baf4-7bc62f6e6d9a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--md--dm-snapshot.ko-entry_point.cil.out.i [2022-11-19 08:33:20,845 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1f8f35-7b5d-441e-baf4-7bc62f6e6d9a/bin/utaipan-I9t0OCRTmS/data/650124c54/53e8cea434b44c3f9ef6ecd4b6fd95ee/FLAGf06bf260d [2022-11-19 08:33:21,128 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1f8f35-7b5d-441e-baf4-7bc62f6e6d9a/bin/utaipan-I9t0OCRTmS/data/650124c54/53e8cea434b44c3f9ef6ecd4b6fd95ee [2022-11-19 08:33:21,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:33:21,136 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:33:21,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:33:21,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:33:21,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:33:21,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:33:21" (1/1) ... [2022-11-19 08:33:21,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4341174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:33:21, skipping insertion in model container [2022-11-19 08:33:21,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:33:21" (1/1) ... [2022-11-19 08:33:21,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:33:21,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:33:23,826 WARN L234 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_ca1f8f35-7b5d-441e-baf4-7bc62f6e6d9a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--md--dm-snapshot.ko-entry_point.cil.out.i[294962,294975] [2022-11-19 08:33:23,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:33:23,951 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:33:24,447 WARN L234 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_ca1f8f35-7b5d-441e-baf4-7bc62f6e6d9a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--md--dm-snapshot.ko-entry_point.cil.out.i[294962,294975] [2022-11-19 08:33:24,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:33:24,681 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:33:24,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:33:24 WrapperNode [2022-11-19 08:33:24,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:33:24,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:33:24,683 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:33:24,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:33:24,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:33:24" (1/1) ... [2022-11-19 08:33:24,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:33:24" (1/1) ... [2022-11-19 08:33:25,087 INFO L138 Inliner]: procedures = 381, calls = 2855, calls flagged for inlining = 157, calls inlined = 151, statements flattened = 6690 [2022-11-19 08:33:25,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:33:25,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:33:25,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:33:25,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:33:25,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:33:24" (1/1) ... [2022-11-19 08:33:25,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:33:24" (1/1) ... [2022-11-19 08:33:25,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:33:24" (1/1) ... [2022-11-19 08:33:25,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:33:24" (1/1) ... [2022-11-19 08:33:25,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:33:24" (1/1) ... [2022-11-19 08:33:25,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:33:24" (1/1) ... [2022-11-19 08:33:25,491 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:33:24" (1/1) ... [2022-11-19 08:33:25,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:33:24" (1/1) ... [2022-11-19 08:33:25,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:33:25,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:33:25,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:33:25,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:33:25,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:33:24" (1/1) ... [2022-11-19 08:33:25,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:33:25,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1f8f35-7b5d-441e-baf4-7bc62f6e6d9a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:33:25,625 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1f8f35-7b5d-441e-baf4-7bc62f6e6d9a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:33:25,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1f8f35-7b5d-441e-baf4-7bc62f6e6d9a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:33:25,687 INFO L130 BoogieDeclarations]: Found specification of procedure dm_table_get_mode [2022-11-19 08:33:25,687 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_table_get_mode [2022-11-19 08:33:25,688 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-19 08:33:25,688 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-19 08:33:25,688 INFO L130 BoogieDeclarations]: Found specification of procedure dm_exception_table_init [2022-11-19 08:33:25,688 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_exception_table_init [2022-11-19 08:33:25,688 INFO L130 BoogieDeclarations]: Found specification of procedure dm_vcalloc [2022-11-19 08:33:25,689 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_vcalloc [2022-11-19 08:33:25,689 INFO L130 BoogieDeclarations]: Found specification of procedure bdev_get_queue [2022-11-19 08:33:25,689 INFO L138 BoogieDeclarations]: Found implementation of procedure bdev_get_queue [2022-11-19 08:33:25,689 INFO L130 BoogieDeclarations]: Found specification of procedure bio_endio [2022-11-19 08:33:25,689 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_endio [2022-11-19 08:33:25,690 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 08:33:25,690 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 08:33:25,690 INFO L130 BoogieDeclarations]: Found specification of procedure dm_table_get_md [2022-11-19 08:33:25,690 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_table_get_md [2022-11-19 08:33:25,690 INFO L130 BoogieDeclarations]: Found specification of procedure stop_merge [2022-11-19 08:33:25,690 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_merge [2022-11-19 08:33:25,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 08:33:25,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 08:33:25,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 08:33:25,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 08:33:25,691 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_create [2022-11-19 08:33:25,691 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_create [2022-11-19 08:33:25,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 08:33:25,692 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 08:33:25,692 INFO L130 BoogieDeclarations]: Found specification of procedure dm_per_bio_data [2022-11-19 08:33:25,692 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_per_bio_data [2022-11-19 08:33:25,692 INFO L130 BoogieDeclarations]: Found specification of procedure snapshot_map [2022-11-19 08:33:25,693 INFO L138 BoogieDeclarations]: Found implementation of procedure snapshot_map [2022-11-19 08:33:25,693 INFO L130 BoogieDeclarations]: Found specification of procedure init_tracked_chunk [2022-11-19 08:33:25,693 INFO L138 BoogieDeclarations]: Found implementation of procedure init_tracked_chunk [2022-11-19 08:33:25,693 INFO L130 BoogieDeclarations]: Found specification of procedure exit_origin_hash [2022-11-19 08:33:25,693 INFO L138 BoogieDeclarations]: Found implementation of procedure exit_origin_hash [2022-11-19 08:33:25,693 INFO L130 BoogieDeclarations]: Found specification of procedure __find_pending_exception [2022-11-19 08:33:25,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __find_pending_exception [2022-11-19 08:33:25,694 INFO L130 BoogieDeclarations]: Found specification of procedure track_chunk [2022-11-19 08:33:25,694 INFO L138 BoogieDeclarations]: Found implementation of procedure track_chunk [2022-11-19 08:33:25,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-19 08:33:25,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-19 08:33:25,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 08:33:25,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 08:33:25,695 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~sector_t~0~X~~sector_t~0~X~$Pointer$~TO~int [2022-11-19 08:33:25,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~sector_t~0~X~~sector_t~0~X~$Pointer$~TO~int [2022-11-19 08:33:25,695 INFO L130 BoogieDeclarations]: Found specification of procedure remap_exception [2022-11-19 08:33:25,696 INFO L138 BoogieDeclarations]: Found implementation of procedure remap_exception [2022-11-19 08:33:25,696 INFO L130 BoogieDeclarations]: Found specification of procedure read_pending_exceptions_done_count [2022-11-19 08:33:25,697 INFO L138 BoogieDeclarations]: Found implementation of procedure read_pending_exceptions_done_count [2022-11-19 08:33:25,697 INFO L130 BoogieDeclarations]: Found specification of procedure get_info [2022-11-19 08:33:25,698 INFO L138 BoogieDeclarations]: Found implementation of procedure get_info [2022-11-19 08:33:25,699 INFO L130 BoogieDeclarations]: Found specification of procedure origin_ctr [2022-11-19 08:33:25,699 INFO L138 BoogieDeclarations]: Found implementation of procedure origin_ctr [2022-11-19 08:33:25,699 INFO L130 BoogieDeclarations]: Found specification of procedure persistent_usage [2022-11-19 08:33:25,700 INFO L138 BoogieDeclarations]: Found implementation of procedure persistent_usage [2022-11-19 08:33:25,700 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pending_exception [2022-11-19 08:33:25,700 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pending_exception [2022-11-19 08:33:25,701 INFO L130 BoogieDeclarations]: Found specification of procedure get_dev_size [2022-11-19 08:33:25,701 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dev_size [2022-11-19 08:33:25,701 INFO L130 BoogieDeclarations]: Found specification of procedure chunk_to_sector [2022-11-19 08:33:25,702 INFO L138 BoogieDeclarations]: Found implementation of procedure chunk_to_sector [2022-11-19 08:33:25,702 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2022-11-19 08:33:25,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2022-11-19 08:33:25,702 INFO L130 BoogieDeclarations]: Found specification of procedure dm_insert_exception [2022-11-19 08:33:25,703 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_insert_exception [2022-11-19 08:33:25,703 INFO L130 BoogieDeclarations]: Found specification of procedure snapshot_merge_next_chunks [2022-11-19 08:33:25,703 INFO L138 BoogieDeclarations]: Found implementation of procedure snapshot_merge_next_chunks [2022-11-19 08:33:25,703 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-19 08:33:25,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-19 08:33:25,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 08:33:25,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 08:33:25,704 INFO L130 BoogieDeclarations]: Found specification of procedure __lookup_origin [2022-11-19 08:33:25,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __lookup_origin [2022-11-19 08:33:25,705 INFO L130 BoogieDeclarations]: Found specification of procedure get_exception [2022-11-19 08:33:25,705 INFO L138 BoogieDeclarations]: Found implementation of procedure get_exception [2022-11-19 08:33:25,705 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 08:33:25,706 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 08:33:25,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 08:33:25,706 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 08:33:25,706 INFO L130 BoogieDeclarations]: Found specification of procedure transient_read_metadata [2022-11-19 08:33:25,706 INFO L138 BoogieDeclarations]: Found implementation of procedure transient_read_metadata [2022-11-19 08:33:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure dm_exception_table_exit [2022-11-19 08:33:25,707 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_exception_table_exit [2022-11-19 08:33:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 08:33:25,707 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 08:33:25,708 INFO L130 BoogieDeclarations]: Found specification of procedure transient_usage [2022-11-19 08:33:25,708 INFO L138 BoogieDeclarations]: Found implementation of procedure transient_usage [2022-11-19 08:33:25,709 INFO L130 BoogieDeclarations]: Found specification of procedure snapshot_status [2022-11-19 08:33:25,710 INFO L138 BoogieDeclarations]: Found implementation of procedure snapshot_status [2022-11-19 08:33:25,710 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-19 08:33:25,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-19 08:33:25,710 INFO L130 BoogieDeclarations]: Found specification of procedure origin_postsuspend [2022-11-19 08:33:25,711 INFO L138 BoogieDeclarations]: Found implementation of procedure origin_postsuspend [2022-11-19 08:33:25,711 INFO L130 BoogieDeclarations]: Found specification of procedure sector_to_chunk [2022-11-19 08:33:25,711 INFO L138 BoogieDeclarations]: Found implementation of procedure sector_to_chunk [2022-11-19 08:33:25,711 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 08:33:25,712 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 08:33:25,712 INFO L130 BoogieDeclarations]: Found specification of procedure dm_kcopyd_copy [2022-11-19 08:33:25,712 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_kcopyd_copy [2022-11-19 08:33:25,712 INFO L130 BoogieDeclarations]: Found specification of procedure __init_rwsem [2022-11-19 08:33:25,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_rwsem [2022-11-19 08:33:25,713 INFO L130 BoogieDeclarations]: Found specification of procedure dm_snap_cow [2022-11-19 08:33:25,713 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_snap_cow [2022-11-19 08:33:25,713 INFO L130 BoogieDeclarations]: Found specification of procedure bdev_logical_block_size [2022-11-19 08:33:25,713 INFO L138 BoogieDeclarations]: Found implementation of procedure bdev_logical_block_size [2022-11-19 08:33:25,714 INFO L130 BoogieDeclarations]: Found specification of procedure persistent_drop_snapshot [2022-11-19 08:33:25,714 INFO L138 BoogieDeclarations]: Found implementation of procedure persistent_drop_snapshot [2022-11-19 08:33:25,714 INFO L130 BoogieDeclarations]: Found specification of procedure dm_unregister_target [2022-11-19 08:33:25,714 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_unregister_target [2022-11-19 08:33:25,714 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_area [2022-11-19 08:33:25,715 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_area [2022-11-19 08:33:25,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:33:25,718 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 08:33:25,719 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 08:33:25,719 INFO L130 BoogieDeclarations]: Found specification of procedure snapshot_merge_map [2022-11-19 08:33:25,719 INFO L138 BoogieDeclarations]: Found implementation of procedure snapshot_merge_map [2022-11-19 08:33:25,720 INFO L130 BoogieDeclarations]: Found specification of procedure snapshot_dtr [2022-11-19 08:33:25,721 INFO L138 BoogieDeclarations]: Found implementation of procedure snapshot_dtr [2022-11-19 08:33:25,723 INFO L130 BoogieDeclarations]: Found specification of procedure generic_make_request [2022-11-19 08:33:25,723 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_make_request [2022-11-19 08:33:25,723 INFO L130 BoogieDeclarations]: Found specification of procedure down_read [2022-11-19 08:33:25,728 INFO L138 BoogieDeclarations]: Found implementation of procedure down_read [2022-11-19 08:33:25,729 INFO L130 BoogieDeclarations]: Found specification of procedure __invalidate_snapshot [2022-11-19 08:33:25,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __invalidate_snapshot [2022-11-19 08:33:25,729 INFO L130 BoogieDeclarations]: Found specification of procedure free_completed_exception [2022-11-19 08:33:25,729 INFO L138 BoogieDeclarations]: Found implementation of procedure free_completed_exception [2022-11-19 08:33:25,729 INFO L130 BoogieDeclarations]: Found specification of procedure persistent_status [2022-11-19 08:33:25,730 INFO L138 BoogieDeclarations]: Found implementation of procedure persistent_status [2022-11-19 08:33:25,730 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_destroy [2022-11-19 08:33:25,730 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_destroy [2022-11-19 08:33:25,730 INFO L130 BoogieDeclarations]: Found specification of procedure flush_bios [2022-11-19 08:33:25,730 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_bios [2022-11-19 08:33:25,730 INFO L130 BoogieDeclarations]: Found specification of procedure free_pending_exception [2022-11-19 08:33:25,731 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pending_exception [2022-11-19 08:33:25,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:33:25,731 INFO L130 BoogieDeclarations]: Found specification of procedure free_area [2022-11-19 08:33:25,731 INFO L138 BoogieDeclarations]: Found implementation of procedure free_area [2022-11-19 08:33:25,731 INFO L130 BoogieDeclarations]: Found specification of procedure area_location [2022-11-19 08:33:25,731 INFO L138 BoogieDeclarations]: Found implementation of procedure area_location [2022-11-19 08:33:25,731 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2022-11-19 08:33:25,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2022-11-19 08:33:25,732 INFO L130 BoogieDeclarations]: Found specification of procedure persistent_dtr [2022-11-19 08:33:25,732 INFO L138 BoogieDeclarations]: Found implementation of procedure persistent_dtr [2022-11-19 08:33:25,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-19 08:33:25,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-19 08:33:25,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 08:33:25,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 08:33:25,733 INFO L130 BoogieDeclarations]: Found specification of procedure dm_kcopyd_client_destroy [2022-11-19 08:33:25,733 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_kcopyd_client_destroy [2022-11-19 08:33:25,733 INFO L130 BoogieDeclarations]: Found specification of procedure dm_transient_snapshot_exit [2022-11-19 08:33:25,733 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_transient_snapshot_exit [2022-11-19 08:33:25,733 INFO L130 BoogieDeclarations]: Found specification of procedure origin_resume [2022-11-19 08:33:25,734 INFO L138 BoogieDeclarations]: Found implementation of procedure origin_resume [2022-11-19 08:33:25,734 INFO L130 BoogieDeclarations]: Found specification of procedure get_origin_minimum_chunksize [2022-11-19 08:33:25,734 INFO L138 BoogieDeclarations]: Found implementation of procedure get_origin_minimum_chunksize [2022-11-19 08:33:25,734 INFO L130 BoogieDeclarations]: Found specification of procedure __lookup_pending_exception [2022-11-19 08:33:25,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __lookup_pending_exception [2022-11-19 08:33:25,734 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2022-11-19 08:33:25,734 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2022-11-19 08:33:25,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:33:25,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:33:25,735 INFO L130 BoogieDeclarations]: Found specification of procedure persistent_commit_exception [2022-11-19 08:33:25,735 INFO L138 BoogieDeclarations]: Found implementation of procedure persistent_commit_exception [2022-11-19 08:33:25,735 INFO L130 BoogieDeclarations]: Found specification of procedure bdev_equal [2022-11-19 08:33:25,735 INFO L138 BoogieDeclarations]: Found implementation of procedure bdev_equal [2022-11-19 08:33:25,736 INFO L130 BoogieDeclarations]: Found specification of procedure bio_list_get [2022-11-19 08:33:25,736 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_list_get [2022-11-19 08:33:25,736 INFO L130 BoogieDeclarations]: Found specification of procedure start_merge [2022-11-19 08:33:25,736 INFO L138 BoogieDeclarations]: Found implementation of procedure start_merge [2022-11-19 08:33:25,736 INFO L130 BoogieDeclarations]: Found specification of procedure dm_consecutive_chunk_count [2022-11-19 08:33:25,736 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_consecutive_chunk_count [2022-11-19 08:33:25,736 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-19 08:33:25,737 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-19 08:33:25,737 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 08:33:25,737 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 08:33:25,737 INFO L130 BoogieDeclarations]: Found specification of procedure persistent_ctr [2022-11-19 08:33:25,737 INFO L138 BoogieDeclarations]: Found implementation of procedure persistent_ctr [2022-11-19 08:33:25,737 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 08:33:25,737 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 08:33:25,738 INFO L130 BoogieDeclarations]: Found specification of procedure bio_list_init [2022-11-19 08:33:25,738 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_list_init [2022-11-19 08:33:25,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 08:33:25,738 INFO L130 BoogieDeclarations]: Found specification of procedure dm_exception_store_destroy [2022-11-19 08:33:25,738 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_exception_store_destroy [2022-11-19 08:33:25,738 INFO L130 BoogieDeclarations]: Found specification of procedure merge_shutdown [2022-11-19 08:33:25,740 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_shutdown [2022-11-19 08:33:25,740 INFO L130 BoogieDeclarations]: Found specification of procedure dm_exception_store_exit [2022-11-19 08:33:25,740 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_exception_store_exit [2022-11-19 08:33:25,740 INFO L130 BoogieDeclarations]: Found specification of procedure origin_dtr [2022-11-19 08:33:25,741 INFO L138 BoogieDeclarations]: Found implementation of procedure origin_dtr [2022-11-19 08:33:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure persistent_commit_merge [2022-11-19 08:33:25,741 INFO L138 BoogieDeclarations]: Found implementation of procedure persistent_commit_merge [2022-11-19 08:33:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 08:33:25,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 08:33:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure start_copy [2022-11-19 08:33:25,741 INFO L138 BoogieDeclarations]: Found implementation of procedure start_copy [2022-11-19 08:33:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure dm_put_device [2022-11-19 08:33:25,742 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_put_device [2022-11-19 08:33:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-19 08:33:25,742 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-19 08:33:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 08:33:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure transient_ctr [2022-11-19 08:33:25,742 INFO L138 BoogieDeclarations]: Found implementation of procedure transient_ctr [2022-11-19 08:33:25,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:33:25,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2022-11-19 08:33:25,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2022-11-19 08:33:25,743 INFO L130 BoogieDeclarations]: Found specification of procedure origin_write_extent [2022-11-19 08:33:25,743 INFO L138 BoogieDeclarations]: Found implementation of procedure origin_write_extent [2022-11-19 08:33:25,743 INFO L130 BoogieDeclarations]: Found specification of procedure transient_status [2022-11-19 08:33:25,744 INFO L138 BoogieDeclarations]: Found implementation of procedure transient_status [2022-11-19 08:33:25,744 INFO L130 BoogieDeclarations]: Found specification of procedure dm_io [2022-11-19 08:33:25,744 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_io [2022-11-19 08:33:25,744 INFO L130 BoogieDeclarations]: Found specification of procedure snapshot_resume [2022-11-19 08:33:25,744 INFO L138 BoogieDeclarations]: Found implementation of procedure snapshot_resume [2022-11-19 08:33:25,744 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 08:33:25,745 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 08:33:25,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-19 08:33:25,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-19 08:33:25,745 INFO L130 BoogieDeclarations]: Found specification of procedure error_bios [2022-11-19 08:33:25,745 INFO L138 BoogieDeclarations]: Found implementation of procedure error_bios [2022-11-19 08:33:25,745 INFO L130 BoogieDeclarations]: Found specification of procedure snapshot_preresume [2022-11-19 08:33:25,745 INFO L138 BoogieDeclarations]: Found implementation of procedure snapshot_preresume [2022-11-19 08:33:25,746 INFO L130 BoogieDeclarations]: Found specification of procedure snapshot_iterate_devices [2022-11-19 08:33:25,746 INFO L138 BoogieDeclarations]: Found implementation of procedure snapshot_iterate_devices [2022-11-19 08:33:25,746 INFO L130 BoogieDeclarations]: Found specification of procedure origin_iterate_devices [2022-11-19 08:33:25,746 INFO L138 BoogieDeclarations]: Found implementation of procedure origin_iterate_devices [2022-11-19 08:33:25,746 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 08:33:25,746 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 08:33:25,746 INFO L130 BoogieDeclarations]: Found specification of procedure transient_dtr [2022-11-19 08:33:25,747 INFO L138 BoogieDeclarations]: Found implementation of procedure transient_dtr [2022-11-19 08:33:25,747 INFO L130 BoogieDeclarations]: Found specification of procedure put_type [2022-11-19 08:33:25,747 INFO L138 BoogieDeclarations]: Found implementation of procedure put_type [2022-11-19 08:33:25,747 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-19 08:33:25,747 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-19 08:33:25,747 INFO L130 BoogieDeclarations]: Found specification of procedure __insert_snapshot [2022-11-19 08:33:25,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __insert_snapshot [2022-11-19 08:33:25,748 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-19 08:33:25,748 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-19 08:33:25,749 INFO L130 BoogieDeclarations]: Found specification of procedure persistent_prepare_merge [2022-11-19 08:33:25,753 INFO L138 BoogieDeclarations]: Found implementation of procedure persistent_prepare_merge [2022-11-19 08:33:25,753 INFO L130 BoogieDeclarations]: Found specification of procedure read_exception [2022-11-19 08:33:25,753 INFO L138 BoogieDeclarations]: Found implementation of procedure read_exception [2022-11-19 08:33:25,753 INFO L130 BoogieDeclarations]: Found specification of procedure dm_exception_store_type_unregister [2022-11-19 08:33:25,753 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_exception_store_type_unregister [2022-11-19 08:33:25,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:33:25,754 INFO L130 BoogieDeclarations]: Found specification of procedure get_type [2022-11-19 08:33:25,754 INFO L138 BoogieDeclarations]: Found implementation of procedure get_type [2022-11-19 08:33:25,754 INFO L130 BoogieDeclarations]: Found specification of procedure dm_exception_store_type_register [2022-11-19 08:33:25,755 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_exception_store_type_register [2022-11-19 08:33:25,755 INFO L130 BoogieDeclarations]: Found specification of procedure snapshot_ctr [2022-11-19 08:33:25,756 INFO L138 BoogieDeclarations]: Found implementation of procedure snapshot_ctr [2022-11-19 08:33:25,756 INFO L130 BoogieDeclarations]: Found specification of procedure persistent_read_metadata [2022-11-19 08:33:25,756 INFO L138 BoogieDeclarations]: Found implementation of procedure persistent_read_metadata [2022-11-19 08:33:25,756 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-19 08:33:25,756 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-19 08:33:25,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 08:33:25,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 08:33:25,757 INFO L130 BoogieDeclarations]: Found specification of procedure dm_exception_store_set_chunk_size [2022-11-19 08:33:25,757 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_exception_store_set_chunk_size [2022-11-19 08:33:25,757 INFO L130 BoogieDeclarations]: Found specification of procedure dm_consecutive_chunk_count_inc [2022-11-19 08:33:25,757 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_consecutive_chunk_count_inc [2022-11-19 08:33:25,757 INFO L130 BoogieDeclarations]: Found specification of procedure __find_snapshots_sharing_cow [2022-11-19 08:33:25,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __find_snapshots_sharing_cow [2022-11-19 08:33:25,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 08:33:25,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 08:33:25,758 INFO L130 BoogieDeclarations]: Found specification of procedure dm_remove_exception [2022-11-19 08:33:25,758 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_remove_exception [2022-11-19 08:33:25,758 INFO L130 BoogieDeclarations]: Found specification of procedure snapshot_end_io [2022-11-19 08:33:25,758 INFO L138 BoogieDeclarations]: Found implementation of procedure snapshot_end_io [2022-11-19 08:33:25,758 INFO L130 BoogieDeclarations]: Found specification of procedure dm_chunk_number [2022-11-19 08:33:25,758 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_chunk_number [2022-11-19 08:33:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_destroy [2022-11-19 08:33:25,759 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_destroy [2022-11-19 08:33:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure skip_metadata [2022-11-19 08:33:25,759 INFO L138 BoogieDeclarations]: Found implementation of procedure skip_metadata [2022-11-19 08:33:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:33:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure zero_disk_area [2022-11-19 08:33:25,759 INFO L138 BoogieDeclarations]: Found implementation of procedure zero_disk_area [2022-11-19 08:33:25,760 INFO L130 BoogieDeclarations]: Found specification of procedure origin_map [2022-11-19 08:33:25,760 INFO L138 BoogieDeclarations]: Found implementation of procedure origin_map [2022-11-19 08:33:25,760 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2022-11-19 08:33:25,760 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 08:33:25,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 08:33:25,760 INFO L130 BoogieDeclarations]: Found specification of procedure up_read [2022-11-19 08:33:25,760 INFO L138 BoogieDeclarations]: Found implementation of procedure up_read [2022-11-19 08:33:25,761 INFO L130 BoogieDeclarations]: Found specification of procedure persistent_prepare_exception [2022-11-19 08:33:25,761 INFO L138 BoogieDeclarations]: Found implementation of procedure persistent_prepare_exception [2022-11-19 08:33:25,761 INFO L130 BoogieDeclarations]: Found specification of procedure origin_status [2022-11-19 08:33:25,761 INFO L138 BoogieDeclarations]: Found implementation of procedure origin_status [2022-11-19 08:33:25,761 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-19 08:33:25,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-19 08:33:25,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:33:25,762 INFO L130 BoogieDeclarations]: Found specification of procedure dm_register_target [2022-11-19 08:33:25,762 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_register_target [2022-11-19 08:33:25,762 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-19 08:33:25,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-19 08:33:25,762 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-19 08:33:25,762 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-19 08:33:25,762 INFO L130 BoogieDeclarations]: Found specification of procedure snapshot_merge_resume [2022-11-19 08:33:25,763 INFO L138 BoogieDeclarations]: Found implementation of procedure snapshot_merge_resume [2022-11-19 08:33:25,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:33:25,763 INFO L130 BoogieDeclarations]: Found specification of procedure __check_for_conflicting_io [2022-11-19 08:33:25,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __check_for_conflicting_io [2022-11-19 08:33:25,763 INFO L130 BoogieDeclarations]: Found specification of procedure origin_hash [2022-11-19 08:33:25,763 INFO L138 BoogieDeclarations]: Found implementation of procedure origin_hash [2022-11-19 08:33:25,763 INFO L130 BoogieDeclarations]: Found specification of procedure __find_exception_store_type [2022-11-19 08:33:25,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __find_exception_store_type [2022-11-19 08:33:25,764 INFO L130 BoogieDeclarations]: Found specification of procedure bio_list_add [2022-11-19 08:33:25,764 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_list_add [2022-11-19 08:33:25,764 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 08:33:25,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 08:33:25,764 INFO L130 BoogieDeclarations]: Found specification of procedure area_io [2022-11-19 08:33:25,764 INFO L138 BoogieDeclarations]: Found implementation of procedure area_io [2022-11-19 08:33:25,764 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-19 08:33:25,765 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-19 08:33:25,765 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_completed_exception [2022-11-19 08:33:25,765 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_completed_exception [2022-11-19 08:33:25,765 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-19 08:33:25,765 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-19 08:33:25,765 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2022-11-19 08:33:25,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ffs [2022-11-19 08:33:25,766 INFO L130 BoogieDeclarations]: Found specification of procedure exception_hash [2022-11-19 08:33:25,766 INFO L138 BoogieDeclarations]: Found implementation of procedure exception_hash [2022-11-19 08:33:25,766 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-19 08:33:25,766 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-19 08:33:25,766 INFO L130 BoogieDeclarations]: Found specification of procedure chunk_io [2022-11-19 08:33:25,766 INFO L138 BoogieDeclarations]: Found implementation of procedure chunk_io [2022-11-19 08:33:25,766 INFO L130 BoogieDeclarations]: Found specification of procedure _get_exception_store_type [2022-11-19 08:33:25,766 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_exception_store_type [2022-11-19 08:33:25,767 INFO L130 BoogieDeclarations]: Found specification of procedure origin_merge [2022-11-19 08:33:25,767 INFO L138 BoogieDeclarations]: Found implementation of procedure origin_merge [2022-11-19 08:33:25,767 INFO L130 BoogieDeclarations]: Found specification of procedure dm_exception_store_create [2022-11-19 08:33:25,767 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_exception_store_create [2022-11-19 08:33:25,767 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_snapshot [2022-11-19 08:33:25,767 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_snapshot [2022-11-19 08:33:25,767 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_free [2022-11-19 08:33:25,768 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_free [2022-11-19 08:33:25,768 INFO L130 BoogieDeclarations]: Found specification of procedure pending_complete [2022-11-19 08:33:25,768 INFO L138 BoogieDeclarations]: Found implementation of procedure pending_complete [2022-11-19 08:33:25,768 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2022-11-19 08:33:25,768 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2022-11-19 08:33:25,768 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-19 08:33:25,768 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-19 08:33:25,769 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-19 08:33:25,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-19 08:33:25,769 INFO L130 BoogieDeclarations]: Found specification of procedure dm_lookup_exception [2022-11-19 08:33:25,769 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_lookup_exception [2022-11-19 08:33:25,769 INFO L130 BoogieDeclarations]: Found specification of procedure transient_prepare_exception [2022-11-19 08:33:25,769 INFO L138 BoogieDeclarations]: Found implementation of procedure transient_prepare_exception [2022-11-19 08:33:25,769 INFO L130 BoogieDeclarations]: Found specification of procedure write_header [2022-11-19 08:33:25,769 INFO L138 BoogieDeclarations]: Found implementation of procedure write_header [2022-11-19 08:33:25,770 INFO L130 BoogieDeclarations]: Found specification of procedure transient_commit_exception [2022-11-19 08:33:25,770 INFO L138 BoogieDeclarations]: Found implementation of procedure transient_commit_exception [2022-11-19 08:33:25,770 INFO L130 BoogieDeclarations]: Found specification of procedure zero_memory_area [2022-11-19 08:33:25,770 INFO L138 BoogieDeclarations]: Found implementation of procedure zero_memory_area [2022-11-19 08:33:25,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:33:25,770 INFO L130 BoogieDeclarations]: Found specification of procedure do_origin [2022-11-19 08:33:25,770 INFO L138 BoogieDeclarations]: Found implementation of procedure do_origin [2022-11-19 08:33:25,771 INFO L130 BoogieDeclarations]: Found specification of procedure dm_get_device [2022-11-19 08:33:25,771 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_get_device [2022-11-19 08:33:25,771 INFO L130 BoogieDeclarations]: Found specification of procedure snapshot_merge_presuspend [2022-11-19 08:33:25,771 INFO L138 BoogieDeclarations]: Found implementation of procedure snapshot_merge_presuspend [2022-11-19 08:33:25,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:33:25,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:33:25,771 INFO L130 BoogieDeclarations]: Found specification of procedure __origin_write [2022-11-19 08:33:25,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __origin_write [2022-11-19 08:33:25,772 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-19 08:33:25,772 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-19 08:33:26,895 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:33:26,900 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:33:27,348 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 08:33:35,810 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:33:37,289 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:33:37,289 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 08:33:37,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:33:37 BoogieIcfgContainer [2022-11-19 08:33:37,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:33:37,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:33:37,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:33:37,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:33:37,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:33:21" (1/3) ... [2022-11-19 08:33:37,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d22f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:33:37, skipping insertion in model container [2022-11-19 08:33:37,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:33:24" (2/3) ... [2022-11-19 08:33:37,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d22f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:33:37, skipping insertion in model container [2022-11-19 08:33:37,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:33:37" (3/3) ... [2022-11-19 08:33:37,304 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--md--dm-snapshot.ko-entry_point.cil.out.i [2022-11-19 08:33:37,324 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:33:37,324 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:33:37,436 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:33:37,444 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;@549b6904, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:33:37,444 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:33:37,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 2406 states, 1456 states have (on average 1.345467032967033) internal successors, (1959), 1521 states have internal predecessors, (1959), 774 states have call successors, (774), 175 states have call predecessors, (774), 174 states have return successors, (765), 742 states have call predecessors, (765), 765 states have call successors, (765) [2022-11-19 08:33:37,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2022-11-19 08:33:37,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:33:37,485 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:33:37,486 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:33:37,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:33:37,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1894569384, now seen corresponding path program 1 times [2022-11-19 08:33:37,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:33:37,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576380882] [2022-11-19 08:33:37,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:33:37,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:33:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:33:38,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2271 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2271 trivial. 0 not checked. [2022-11-19 08:33:38,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:33:38,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576380882] [2022-11-19 08:33:38,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576380882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:33:38,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:33:38,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:33:38,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359526428] [2022-11-19 08:33:38,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:33:38,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:33:38,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:33:39,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:33:39,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:33:39,032 INFO L87 Difference]: Start difference. First operand has 2406 states, 1456 states have (on average 1.345467032967033) internal successors, (1959), 1521 states have internal predecessors, (1959), 774 states have call successors, (774), 175 states have call predecessors, (774), 174 states have return successors, (765), 742 states have call predecessors, (765), 765 states have call successors, (765) Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2022-11-19 08:33:41,114 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 [] [2022-11-19 08:33:44,002 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 [] [2022-11-19 08:33:45,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:33:45,356 INFO L93 Difference]: Finished difference Result 6981 states and 10358 transitions. [2022-11-19 08:33:45,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:33:45,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) Word has length 370 [2022-11-19 08:33:45,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:33:45,429 INFO L225 Difference]: With dead ends: 6981 [2022-11-19 08:33:45,429 INFO L226 Difference]: Without dead ends: 4595 [2022-11-19 08:33:45,452 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 [2022-11-19 08:33:45,456 INFO L413 NwaCegarLoop]: 4024 mSDtfsCounter, 3223 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3225 SdHoareTripleChecker+Valid, 7172 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:33:45,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3225 Valid, 7172 Invalid, 628 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2022-11-19 08:33:45,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4595 states. [2022-11-19 08:33:45,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4595 to 4589. [2022-11-19 08:33:45,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4589 states, 2791 states have (on average 1.3350053744177715) internal successors, (3726), 2900 states have internal predecessors, (3726), 1451 states have call successors, (1451), 347 states have call predecessors, (1451), 346 states have return successors, (1451), 1401 states have call predecessors, (1451), 1449 states have call successors, (1451) [2022-11-19 08:33:45,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4589 states to 4589 states and 6628 transitions. [2022-11-19 08:33:45,870 INFO L78 Accepts]: Start accepts. Automaton has 4589 states and 6628 transitions. Word has length 370 [2022-11-19 08:33:45,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:33:45,874 INFO L495 AbstractCegarLoop]: Abstraction has 4589 states and 6628 transitions. [2022-11-19 08:33:45,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2022-11-19 08:33:45,875 INFO L276 IsEmpty]: Start isEmpty. Operand 4589 states and 6628 transitions. [2022-11-19 08:33:45,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2022-11-19 08:33:45,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:33:45,895 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:33:45,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:33:45,895 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:33:45,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:33:45,896 INFO L85 PathProgramCache]: Analyzing trace with hash 551653031, now seen corresponding path program 1 times [2022-11-19 08:33:45,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:33:45,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492358903] [2022-11-19 08:33:45,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:33:45,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:33:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:33:46,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2271 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2271 trivial. 0 not checked. [2022-11-19 08:33:46,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:33:46,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492358903] [2022-11-19 08:33:46,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492358903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:33:46,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:33:46,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:33:46,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684404165] [2022-11-19 08:33:46,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:33:46,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:33:46,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:33:46,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:33:46,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:33:46,614 INFO L87 Difference]: Start difference. First operand 4589 states and 6628 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2022-11-19 08:33:48,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:33:51,361 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 [] [2022-11-19 08:33:52,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:33:52,646 INFO L93 Difference]: Finished difference Result 13396 states and 19305 transitions. [2022-11-19 08:33:52,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:33:52,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) Word has length 372 [2022-11-19 08:33:52,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:33:52,717 INFO L225 Difference]: With dead ends: 13396 [2022-11-19 08:33:52,717 INFO L226 Difference]: Without dead ends: 8876 [2022-11-19 08:33:52,745 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 [2022-11-19 08:33:52,747 INFO L413 NwaCegarLoop]: 4278 mSDtfsCounter, 3142 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3145 SdHoareTripleChecker+Valid, 7379 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:33:52,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3145 Valid, 7379 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 654 Invalid, 2 Unknown, 0 Unchecked, 5.5s Time] [2022-11-19 08:33:52,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8876 states. [2022-11-19 08:33:53,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8876 to 8869. [2022-11-19 08:33:53,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8869 states, 5387 states have (on average 1.3330239465379619) internal successors, (7181), 5606 states have internal predecessors, (7181), 2793 states have call successors, (2793), 689 states have call predecessors, (2793), 688 states have return successors, (2798), 2693 states have call predecessors, (2798), 2791 states have call successors, (2798) [2022-11-19 08:33:53,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8869 states to 8869 states and 12772 transitions. [2022-11-19 08:33:53,448 INFO L78 Accepts]: Start accepts. Automaton has 8869 states and 12772 transitions. Word has length 372 [2022-11-19 08:33:53,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:33:53,453 INFO L495 AbstractCegarLoop]: Abstraction has 8869 states and 12772 transitions. [2022-11-19 08:33:53,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2022-11-19 08:33:53,454 INFO L276 IsEmpty]: Start isEmpty. Operand 8869 states and 12772 transitions. [2022-11-19 08:33:53,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2022-11-19 08:33:53,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:33:53,464 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:33:53,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:33:53,465 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:33:53,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:33:53,475 INFO L85 PathProgramCache]: Analyzing trace with hash 667178435, now seen corresponding path program 1 times [2022-11-19 08:33:53,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:33:53,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145432210] [2022-11-19 08:33:53,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:33:53,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:33:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:33:54,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2271 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2271 trivial. 0 not checked. [2022-11-19 08:33:54,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:33:54,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145432210] [2022-11-19 08:33:54,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145432210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:33:54,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:33:54,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:33:54,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632063645] [2022-11-19 08:33:54,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:33:54,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:33:54,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:33:54,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:33:54,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:33:54,134 INFO L87 Difference]: Start difference. First operand 8869 states and 12772 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2022-11-19 08:33:55,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:33:59,896 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 [] [2022-11-19 08:34:00,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:34:00,521 INFO L93 Difference]: Finished difference Result 25546 states and 36663 transitions. [2022-11-19 08:34:00,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:34:00,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) Word has length 377 [2022-11-19 08:34:00,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:34:00,668 INFO L225 Difference]: With dead ends: 25546 [2022-11-19 08:34:00,668 INFO L226 Difference]: Without dead ends: 16746 [2022-11-19 08:34:00,723 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 [2022-11-19 08:34:00,727 INFO L413 NwaCegarLoop]: 5075 mSDtfsCounter, 3237 mSDsluCounter, 2998 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3240 SdHoareTripleChecker+Valid, 8073 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:34:00,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3240 Valid, 8073 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 785 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-11-19 08:34:00,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16746 states. [2022-11-19 08:34:01,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16746 to 16741. [2022-11-19 08:34:01,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16741 states, 10144 states have (on average 1.3285686119873816) internal successors, (13477), 10558 states have internal predecessors, (13477), 5247 states have call successors, (5247), 1350 states have call predecessors, (5247), 1349 states have return successors, (5262), 5059 states have call predecessors, (5262), 5245 states have call successors, (5262) [2022-11-19 08:34:01,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16741 states to 16741 states and 23986 transitions. [2022-11-19 08:34:01,778 INFO L78 Accepts]: Start accepts. Automaton has 16741 states and 23986 transitions. Word has length 377 [2022-11-19 08:34:01,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:34:01,778 INFO L495 AbstractCegarLoop]: Abstraction has 16741 states and 23986 transitions. [2022-11-19 08:34:01,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2022-11-19 08:34:01,779 INFO L276 IsEmpty]: Start isEmpty. Operand 16741 states and 23986 transitions. [2022-11-19 08:34:01,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-11-19 08:34:01,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:34:01,787 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 16, 16, 16, 16, 16, 16, 16, 16, 16, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:34:01,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:34:01,787 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:34:01,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:34:01,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1038729186, now seen corresponding path program 1 times [2022-11-19 08:34:01,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:34:01,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558819813] [2022-11-19 08:34:01,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:34:01,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:34:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:34:02,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2277 trivial. 0 not checked. [2022-11-19 08:34:02,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:34:02,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558819813] [2022-11-19 08:34:02,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558819813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:34:02,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:34:02,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:34:02,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895419747] [2022-11-19 08:34:02,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:34:02,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:34:02,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:34:02,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:34:02,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:34:02,453 INFO L87 Difference]: Start difference. First operand 16741 states and 23986 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-19 08:34:04,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:07,830 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 [] [2022-11-19 08:34:09,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:34:09,019 INFO L93 Difference]: Finished difference Result 30794 states and 45181 transitions. [2022-11-19 08:34:09,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:34:09,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 422 [2022-11-19 08:34:09,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:34:09,226 INFO L225 Difference]: With dead ends: 30794 [2022-11-19 08:34:09,226 INFO L226 Difference]: Without dead ends: 30790 [2022-11-19 08:34:09,245 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 [2022-11-19 08:34:09,250 INFO L413 NwaCegarLoop]: 4519 mSDtfsCounter, 3353 mSDsluCounter, 2829 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3353 SdHoareTripleChecker+Valid, 7348 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:34:09,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3353 Valid, 7348 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 534 Invalid, 2 Unknown, 0 Unchecked, 5.3s Time] [2022-11-19 08:34:09,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30790 states. [2022-11-19 08:34:11,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30790 to 30493. [2022-11-19 08:34:11,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30493 states, 18540 states have (on average 1.3341423948220066) internal successors, (24735), 19328 states have internal predecessors, (24735), 9509 states have call successors, (9509), 2476 states have call predecessors, (9509), 2443 states have return successors, (10471), 9037 states have call predecessors, (10471), 9507 states have call successors, (10471) [2022-11-19 08:34:11,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30493 states to 30493 states and 44715 transitions. [2022-11-19 08:34:11,222 INFO L78 Accepts]: Start accepts. Automaton has 30493 states and 44715 transitions. Word has length 422 [2022-11-19 08:34:11,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:34:11,224 INFO L495 AbstractCegarLoop]: Abstraction has 30493 states and 44715 transitions. [2022-11-19 08:34:11,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-19 08:34:11,224 INFO L276 IsEmpty]: Start isEmpty. Operand 30493 states and 44715 transitions. [2022-11-19 08:34:11,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2022-11-19 08:34:11,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:34:11,236 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:34:11,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:34:11,236 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:34:11,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:34:11,237 INFO L85 PathProgramCache]: Analyzing trace with hash -185250042, now seen corresponding path program 1 times [2022-11-19 08:34:11,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:34:11,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644674526] [2022-11-19 08:34:11,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:34:11,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:34:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:34:12,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4301 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4301 trivial. 0 not checked. [2022-11-19 08:34:12,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:34:12,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644674526] [2022-11-19 08:34:12,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644674526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:34:12,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:34:12,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:34:12,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916533716] [2022-11-19 08:34:12,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:34:12,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:34:12,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:34:12,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:34:12,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:34:12,217 INFO L87 Difference]: Start difference. First operand 30493 states and 44715 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-19 08:34:14,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:18,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:20,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:22,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:34:22,544 INFO L93 Difference]: Finished difference Result 90128 states and 131947 transitions. [2022-11-19 08:34:22,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:34:22,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 503 [2022-11-19 08:34:22,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:34:23,035 INFO L225 Difference]: With dead ends: 90128 [2022-11-19 08:34:23,035 INFO L226 Difference]: Without dead ends: 59704 [2022-11-19 08:34:23,178 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 [2022-11-19 08:34:23,179 INFO L413 NwaCegarLoop]: 5487 mSDtfsCounter, 3195 mSDsluCounter, 3139 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3198 SdHoareTripleChecker+Valid, 8626 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:34:23,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3198 Valid, 8626 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 788 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2022-11-19 08:34:23,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59704 states. [2022-11-19 08:34:26,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59704 to 59697. [2022-11-19 08:34:27,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59697 states, 36235 states have (on average 1.331778667034635) internal successors, (48257), 37812 states have internal predecessors, (48257), 18575 states have call successors, (18575), 4951 states have call predecessors, (18575), 4886 states have return successors, (20481), 17631 states have call predecessors, (20481), 18573 states have call successors, (20481) [2022-11-19 08:34:27,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59697 states to 59697 states and 87313 transitions. [2022-11-19 08:34:27,790 INFO L78 Accepts]: Start accepts. Automaton has 59697 states and 87313 transitions. Word has length 503 [2022-11-19 08:34:27,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:34:27,791 INFO L495 AbstractCegarLoop]: Abstraction has 59697 states and 87313 transitions. [2022-11-19 08:34:27,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-19 08:34:27,792 INFO L276 IsEmpty]: Start isEmpty. Operand 59697 states and 87313 transitions. [2022-11-19 08:34:27,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2022-11-19 08:34:27,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:34:27,801 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:34:27,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:34:27,801 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:34:27,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:34:27,802 INFO L85 PathProgramCache]: Analyzing trace with hash 473445321, now seen corresponding path program 1 times [2022-11-19 08:34:27,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:34:27,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543749593] [2022-11-19 08:34:27,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:34:27,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:34:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:34:28,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4301 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4301 trivial. 0 not checked. [2022-11-19 08:34:28,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:34:28,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543749593] [2022-11-19 08:34:28,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543749593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:34:28,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:34:28,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:34:28,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800111331] [2022-11-19 08:34:28,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:34:28,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:34:28,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:34:28,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:34:28,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:34:28,852 INFO L87 Difference]: Start difference. First operand 59697 states and 87313 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-19 08:34:30,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:34,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:36,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:38,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:42,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:34:42,174 INFO L93 Difference]: Finished difference Result 176426 states and 257613 transitions. [2022-11-19 08:34:42,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:34:42,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 499 [2022-11-19 08:34:42,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:34:43,517 INFO L225 Difference]: With dead ends: 176426 [2022-11-19 08:34:43,517 INFO L226 Difference]: Without dead ends: 116798 [2022-11-19 08:34:43,907 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 [2022-11-19 08:34:43,909 INFO L413 NwaCegarLoop]: 5562 mSDtfsCounter, 3197 mSDsluCounter, 3139 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3197 SdHoareTripleChecker+Valid, 8701 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:34:43,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3197 Valid, 8701 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 794 Invalid, 3 Unknown, 0 Unchecked, 9.1s Time] [2022-11-19 08:34:44,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116798 states. [2022-11-19 08:34:49,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116798 to 116790. [2022-11-19 08:34:49,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116790 states, 70768 states have (on average 1.3293579018765544) internal successors, (94076), 73922 states have internal predecessors, (94076), 36271 states have call successors, (36271), 9879 states have call predecessors, (36271), 9750 states have return successors, (40017), 34384 states have call predecessors, (40017), 36269 states have call successors, (40017) [2022-11-19 08:34:51,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116790 states to 116790 states and 170364 transitions. [2022-11-19 08:34:51,425 INFO L78 Accepts]: Start accepts. Automaton has 116790 states and 170364 transitions. Word has length 499 [2022-11-19 08:34:51,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:34:51,426 INFO L495 AbstractCegarLoop]: Abstraction has 116790 states and 170364 transitions. [2022-11-19 08:34:51,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-19 08:34:51,427 INFO L276 IsEmpty]: Start isEmpty. Operand 116790 states and 170364 transitions. [2022-11-19 08:34:51,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2022-11-19 08:34:51,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:34:51,435 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:34:51,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:34:51,436 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:34:51,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:34:51,436 INFO L85 PathProgramCache]: Analyzing trace with hash 2118565586, now seen corresponding path program 1 times [2022-11-19 08:34:51,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:34:51,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648896806] [2022-11-19 08:34:51,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:34:51,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:34:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:34:52,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4932 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4932 trivial. 0 not checked. [2022-11-19 08:34:52,248 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:34:52,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648896806] [2022-11-19 08:34:52,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648896806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:34:52,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:34:52,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:34:52,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675638437] [2022-11-19 08:34:52,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:34:52,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:34:52,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:34:52,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:34:52,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:34:52,251 INFO L87 Difference]: Start difference. First operand 116790 states and 170364 transitions. 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, (56), 2 states have call predecessors, (56), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-19 08:34:54,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:59,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:35:01,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:35:03,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:35:10,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:35:10,882 INFO L93 Difference]: Finished difference Result 343681 states and 500002 transitions. [2022-11-19 08:35:10,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:35:10,883 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, (56), 2 states have call predecessors, (56), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 535 [2022-11-19 08:35:10,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:35:12,326 INFO L225 Difference]: With dead ends: 343681 [2022-11-19 08:35:12,326 INFO L226 Difference]: Without dead ends: 226960 [2022-11-19 08:35:13,626 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 [2022-11-19 08:35:13,627 INFO L413 NwaCegarLoop]: 5736 mSDtfsCounter, 3155 mSDsluCounter, 3121 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3155 SdHoareTripleChecker+Valid, 8857 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:35:13,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3155 Valid, 8857 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 818 Invalid, 3 Unknown, 0 Unchecked, 9.7s Time] [2022-11-19 08:35:13,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226960 states.