./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984a499d-365b-4a4f-840d-4801d08458b8/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984a499d-365b-4a4f-840d-4801d08458b8/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_984a499d-365b-4a4f-840d-4801d08458b8/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984a499d-365b-4a4f-840d-4801d08458b8/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984a499d-365b-4a4f-840d-4801d08458b8/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_984a499d-365b-4a4f-840d-4801d08458b8/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 a50782c14122c4e96fba85550d8baa150b55d4da62dbebbee116fe7764246c85 --- 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 08:25:17,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:25:17,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:25:17,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:25:17,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:25:17,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:25:17,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:25:17,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:25:17,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:25:17,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:25:17,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:25:17,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:25:17,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:25:17,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:25:17,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:25:17,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:25:17,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:25:17,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:25:17,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:25:17,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:25:17,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:25:17,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:25:17,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:25:17,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:25:17,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:25:17,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:25:17,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:25:17,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:25:17,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:25:17,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:25:17,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:25:17,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:25:17,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:25:17,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:25:17,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:25:17,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:25:17,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:25:17,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:25:17,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:25:17,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:25:17,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:25:17,446 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984a499d-365b-4a4f-840d-4801d08458b8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:25:17,487 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:25:17,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:25:17,488 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:25:17,488 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:25:17,489 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:25:17,489 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:25:17,489 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:25:17,489 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:25:17,490 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:25:17,490 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:25:17,491 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:25:17,491 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:25:17,491 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:25:17,491 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:25:17,491 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:25:17,492 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:25:17,492 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:25:17,492 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:25:17,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:25:17,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:25:17,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:25:17,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:25:17,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:25:17,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:25:17,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:25:17,495 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:25:17,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:25:17,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:25:17,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:25:17,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:25:17,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:25:17,497 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:25:17,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:25:17,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:25:17,497 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:25:17,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:25:17,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:25:17,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:25:17,498 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_984a499d-365b-4a4f-840d-4801d08458b8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984a499d-365b-4a4f-840d-4801d08458b8/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a50782c14122c4e96fba85550d8baa150b55d4da62dbebbee116fe7764246c85 [2022-11-19 08:25:17,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:25:17,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:25:17,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:25:17,805 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:25:17,806 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:25:17,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984a499d-365b-4a4f-840d-4801d08458b8/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.ko-entry_point.cil.out.i [2022-11-19 08:25:17,878 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984a499d-365b-4a4f-840d-4801d08458b8/bin/utaipan-I9t0OCRTmS/data/b4b660721/46d36e5616174407bc02c42e17c79da0/FLAG3e2fd4464 [2022-11-19 08:25:18,828 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:25:18,830 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984a499d-365b-4a4f-840d-4801d08458b8/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.ko-entry_point.cil.out.i [2022-11-19 08:25:18,888 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984a499d-365b-4a4f-840d-4801d08458b8/bin/utaipan-I9t0OCRTmS/data/b4b660721/46d36e5616174407bc02c42e17c79da0/FLAG3e2fd4464 [2022-11-19 08:25:19,223 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984a499d-365b-4a4f-840d-4801d08458b8/bin/utaipan-I9t0OCRTmS/data/b4b660721/46d36e5616174407bc02c42e17c79da0 [2022-11-19 08:25:19,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:25:19,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:25:19,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:25:19,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:25:19,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:25:19,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:25:19" (1/1) ... [2022-11-19 08:25:19,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@421df599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:19, skipping insertion in model container [2022-11-19 08:25:19,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:25:19" (1/1) ... [2022-11-19 08:25:19,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:25:19,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:25:20,955 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_984a499d-365b-4a4f-840d-4801d08458b8/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.ko-entry_point.cil.out.i[198904,198917] [2022-11-19 08:25:22,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:25:22,818 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:25:23,034 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_984a499d-365b-4a4f-840d-4801d08458b8/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.ko-entry_point.cil.out.i[198904,198917] [2022-11-19 08:25:23,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:25:23,655 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:25:23,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:23 WrapperNode [2022-11-19 08:25:23,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:25:23,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:25:23,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:25:23,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:25:23,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:23" (1/1) ... [2022-11-19 08:25:23,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:23" (1/1) ... [2022-11-19 08:25:24,221 INFO L138 Inliner]: procedures = 398, calls = 3556, calls flagged for inlining = 231, calls inlined = 208, statements flattened = 8589 [2022-11-19 08:25:24,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:25:24,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:25:24,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:25:24,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:25:24,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:23" (1/1) ... [2022-11-19 08:25:24,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:23" (1/1) ... [2022-11-19 08:25:24,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:23" (1/1) ... [2022-11-19 08:25:24,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:23" (1/1) ... [2022-11-19 08:25:24,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:23" (1/1) ... [2022-11-19 08:25:24,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:23" (1/1) ... [2022-11-19 08:25:24,712 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:23" (1/1) ... [2022-11-19 08:25:24,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:23" (1/1) ... [2022-11-19 08:25:24,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:25:24,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:25:24,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:25:24,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:25:24,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:23" (1/1) ... [2022-11-19 08:25:24,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:25:24,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984a499d-365b-4a4f-840d-4801d08458b8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:25:24,835 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984a499d-365b-4a4f-840d-4801d08458b8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:25:24,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984a499d-365b-4a4f-840d-4801d08458b8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:25:24,902 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-19 08:25:24,902 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-19 08:25:24,902 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2022-11-19 08:25:24,902 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2022-11-19 08:25:24,902 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-19 08:25:24,902 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-19 08:25:24,903 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2022-11-19 08:25:24,903 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2022-11-19 08:25:24,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 08:25:24,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 08:25:24,903 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2022-11-19 08:25:24,903 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2022-11-19 08:25:24,903 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-19 08:25:24,903 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-19 08:25:24,904 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 08:25:24,904 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 08:25:24,904 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 08:25:24,904 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 08:25:24,904 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-19 08:25:24,904 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-19 08:25:24,904 INFO L130 BoogieDeclarations]: Found specification of procedure atl1_sched_rings_clean [2022-11-19 08:25:24,904 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1_sched_rings_clean [2022-11-19 08:25:24,904 INFO L130 BoogieDeclarations]: Found specification of procedure atl1_check_link [2022-11-19 08:25:24,905 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1_check_link [2022-11-19 08:25:24,905 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2022-11-19 08:25:24,905 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2022-11-19 08:25:24,905 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-19 08:25:24,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-19 08:25:24,906 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 08:25:24,906 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 08:25:24,906 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_page [2022-11-19 08:25:24,906 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_page [2022-11-19 08:25:24,906 INFO L130 BoogieDeclarations]: Found specification of procedure atl1_init_hw [2022-11-19 08:25:24,906 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1_init_hw [2022-11-19 08:25:24,906 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-19 08:25:24,906 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-19 08:25:24,906 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 08:25:24,907 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 08:25:24,907 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-19 08:25:24,907 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-19 08:25:24,907 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-19 08:25:24,907 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-19 08:25:24,907 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 08:25:24,907 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 08:25:24,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-11-19 08:25:24,908 INFO L130 BoogieDeclarations]: Found specification of procedure atlx_irq_disable [2022-11-19 08:25:24,908 INFO L138 BoogieDeclarations]: Found implementation of procedure atlx_irq_disable [2022-11-19 08:25:24,908 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 08:25:24,909 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 08:25:24,910 INFO L130 BoogieDeclarations]: Found specification of procedure atl1_up [2022-11-19 08:25:24,910 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1_up [2022-11-19 08:25:24,910 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-19 08:25:24,910 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-19 08:25:24,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:25:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-19 08:25:24,911 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-19 08:25:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 08:25:24,911 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 08:25:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 08:25:24,912 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 08:25:24,912 INFO L130 BoogieDeclarations]: Found specification of procedure atl1_write_phy_reg [2022-11-19 08:25:24,912 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1_write_phy_reg [2022-11-19 08:25:24,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 08:25:24,912 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 08:25:24,912 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 08:25:24,913 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 08:25:24,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 08:25:24,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 08:25:24,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:25:24,913 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 08:25:24,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 08:25:24,913 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2022-11-19 08:25:24,914 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2022-11-19 08:25:24,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 08:25:24,914 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 08:25:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure atl1_resume [2022-11-19 08:25:24,915 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1_resume [2022-11-19 08:25:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-19 08:25:24,915 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-19 08:25:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure atlx_imr_set [2022-11-19 08:25:24,915 INFO L138 BoogieDeclarations]: Found implementation of procedure atlx_imr_set [2022-11-19 08:25:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure atl1_remove [2022-11-19 08:25:24,916 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1_remove [2022-11-19 08:25:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-19 08:25:24,916 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-19 08:25:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure atl1_reset [2022-11-19 08:25:24,916 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1_reset [2022-11-19 08:25:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:25:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:25:24,918 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-19 08:25:24,918 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-19 08:25:24,918 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 08:25:24,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 08:25:24,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:25:24,919 INFO L130 BoogieDeclarations]: Found specification of procedure atl1_free_ring_resources [2022-11-19 08:25:24,919 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1_free_ring_resources [2022-11-19 08:25:24,919 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-11-19 08:25:24,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-11-19 08:25:24,919 INFO L130 BoogieDeclarations]: Found specification of procedure atl1_get_speed_and_duplex [2022-11-19 08:25:24,920 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1_get_speed_and_duplex [2022-11-19 08:25:24,920 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-19 08:25:24,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-19 08:25:24,920 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 08:25:24,920 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 08:25:24,920 INFO L130 BoogieDeclarations]: Found specification of procedure atl1_down [2022-11-19 08:25:24,921 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1_down [2022-11-19 08:25:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure __atlx_vlan_mode [2022-11-19 08:25:24,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __atlx_vlan_mode [2022-11-19 08:25:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2022-11-19 08:25:24,922 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2022-11-19 08:25:24,922 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 08:25:24,925 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 08:25:24,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:25:24,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:25:24,925 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2022-11-19 08:25:24,925 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2022-11-19 08:25:24,928 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-19 08:25:24,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-19 08:25:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 08:25:24,930 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 08:25:24,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 08:25:24,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 08:25:24,936 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 08:25:24,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 08:25:24,936 INFO L130 BoogieDeclarations]: Found specification of procedure csum_tcpudp_magic [2022-11-19 08:25:24,936 INFO L138 BoogieDeclarations]: Found implementation of procedure csum_tcpudp_magic [2022-11-19 08:25:24,936 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 08:25:24,936 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 08:25:24,936 INFO L130 BoogieDeclarations]: Found specification of procedure atlx_ioctl [2022-11-19 08:25:24,936 INFO L138 BoogieDeclarations]: Found implementation of procedure atlx_ioctl [2022-11-19 08:25:24,937 INFO L130 BoogieDeclarations]: Found specification of procedure atl1_change_mtu [2022-11-19 08:25:24,938 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1_change_mtu [2022-11-19 08:25:24,938 INFO L130 BoogieDeclarations]: Found specification of procedure atlx_tx_timeout [2022-11-19 08:25:24,938 INFO L138 BoogieDeclarations]: Found implementation of procedure atlx_tx_timeout [2022-11-19 08:25:24,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 08:25:24,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 08:25:24,939 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-19 08:25:24,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-19 08:25:24,939 INFO L130 BoogieDeclarations]: Found specification of procedure atl1_poll_controller [2022-11-19 08:25:24,939 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1_poll_controller [2022-11-19 08:25:24,939 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-19 08:25:24,939 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-19 08:25:24,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 08:25:24,940 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 08:25:24,940 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 08:25:24,940 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 08:25:24,940 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 08:25:24,940 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 08:25:24,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2022-11-19 08:25:24,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2022-11-19 08:25:24,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:25:24,941 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 08:25:24,941 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 08:25:24,941 INFO L130 BoogieDeclarations]: Found specification of procedure atl1_reset_hw [2022-11-19 08:25:24,941 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1_reset_hw [2022-11-19 08:25:24,941 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 08:25:24,941 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 08:25:24,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:25:24,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-19 08:25:24,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-19 08:25:24,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:25:24,942 INFO L130 BoogieDeclarations]: Found specification of procedure atlx_set_multi [2022-11-19 08:25:24,942 INFO L138 BoogieDeclarations]: Found implementation of procedure atlx_set_multi [2022-11-19 08:25:24,942 INFO L130 BoogieDeclarations]: Found specification of procedure atlx_fix_features [2022-11-19 08:25:24,942 INFO L138 BoogieDeclarations]: Found implementation of procedure atlx_fix_features [2022-11-19 08:25:24,943 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-19 08:25:24,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-19 08:25:24,943 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-19 08:25:24,943 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-19 08:25:24,943 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 08:25:24,943 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 08:25:24,943 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-19 08:25:24,943 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-19 08:25:24,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 08:25:24,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 08:25:24,944 INFO L130 BoogieDeclarations]: Found specification of procedure atlx_vlan_mode [2022-11-19 08:25:24,944 INFO L138 BoogieDeclarations]: Found implementation of procedure atlx_vlan_mode [2022-11-19 08:25:24,944 INFO L130 BoogieDeclarations]: Found specification of procedure atl1_set_mac_addr [2022-11-19 08:25:24,944 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1_set_mac_addr [2022-11-19 08:25:24,944 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 08:25:24,945 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 08:25:24,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-11-19 08:25:24,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-11-19 08:25:24,945 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2022-11-19 08:25:24,945 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2022-11-19 08:25:24,945 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 08:25:24,945 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 08:25:24,946 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_2 [2022-11-19 08:25:24,946 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_2 [2022-11-19 08:25:24,946 INFO L130 BoogieDeclarations]: Found specification of procedure atl1_clean_rx_ring [2022-11-19 08:25:24,946 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1_clean_rx_ring [2022-11-19 08:25:24,946 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-19 08:25:24,946 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-19 08:25:24,946 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 08:25:24,946 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 08:25:24,947 INFO L130 BoogieDeclarations]: Found specification of procedure atlx_set_features [2022-11-19 08:25:24,947 INFO L138 BoogieDeclarations]: Found implementation of procedure atlx_set_features [2022-11-19 08:25:24,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:25:24,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 08:25:24,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 08:25:24,947 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 08:25:24,947 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 08:25:24,948 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-19 08:25:24,948 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-19 08:25:24,948 INFO L130 BoogieDeclarations]: Found specification of procedure atl1_set_mac [2022-11-19 08:25:24,948 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1_set_mac [2022-11-19 08:25:24,948 INFO L130 BoogieDeclarations]: Found specification of procedure atl1_suspend [2022-11-19 08:25:24,948 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1_suspend [2022-11-19 08:25:24,948 INFO L130 BoogieDeclarations]: Found specification of procedure atl1_clean_tx_ring [2022-11-19 08:25:24,949 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1_clean_tx_ring [2022-11-19 08:25:24,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-19 08:25:24,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-19 08:25:24,949 INFO L130 BoogieDeclarations]: Found specification of procedure atl1_phy_setup_autoneg_adv [2022-11-19 08:25:24,949 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1_phy_setup_autoneg_adv [2022-11-19 08:25:24,949 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2022-11-19 08:25:24,949 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2022-11-19 08:25:24,950 INFO L130 BoogieDeclarations]: Found specification of procedure atl1_intr [2022-11-19 08:25:24,950 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1_intr [2022-11-19 08:25:24,950 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-19 08:25:24,950 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-19 08:25:24,950 INFO L130 BoogieDeclarations]: Found specification of procedure atl1_read_phy_reg [2022-11-19 08:25:24,950 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1_read_phy_reg [2022-11-19 08:25:24,950 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-19 08:25:24,950 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-19 08:25:24,951 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-19 08:25:24,951 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-19 08:25:24,951 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2022-11-19 08:25:24,951 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2022-11-19 08:25:24,951 INFO L130 BoogieDeclarations]: Found specification of procedure atl1_setup_ring_resources [2022-11-19 08:25:24,951 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1_setup_ring_resources [2022-11-19 08:25:24,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:25:24,952 INFO L130 BoogieDeclarations]: Found specification of procedure atl1_alloc_rx_buffers [2022-11-19 08:25:24,952 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1_alloc_rx_buffers [2022-11-19 08:25:26,084 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:25:26,087 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:25:26,401 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 08:35:49,446 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:35:55,762 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:35:55,762 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-19 08:35:55,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:35:55 BoogieIcfgContainer [2022-11-19 08:35:55,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:35:55,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:35:55,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:35:55,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:35:55,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:25:19" (1/3) ... [2022-11-19 08:35:55,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f5901a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:35:55, skipping insertion in model container [2022-11-19 08:35:55,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:23" (2/3) ... [2022-11-19 08:35:55,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f5901a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:35:55, skipping insertion in model container [2022-11-19 08:35:55,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:35:55" (3/3) ... [2022-11-19 08:35:55,778 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.ko-entry_point.cil.out.i [2022-11-19 08:35:55,797 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:35:55,797 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:35:55,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:35:55,904 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;@25646961, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:35:55,906 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:35:55,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 1785 states, 1119 states have (on average 1.3297587131367292) internal successors, (1488), 1152 states have internal predecessors, (1488), 557 states have call successors, (557), 108 states have call predecessors, (557), 107 states have return successors, (548), 544 states have call predecessors, (548), 548 states have call successors, (548) [2022-11-19 08:35:55,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-19 08:35:55,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:35:55,931 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:35:55,931 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:35:55,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:35:55,936 INFO L85 PathProgramCache]: Analyzing trace with hash -671585427, now seen corresponding path program 1 times [2022-11-19 08:35:55,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:35:55,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879635103] [2022-11-19 08:35:55,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:35:55,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:35:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:35:58,740 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-11-19 08:35:58,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:35:58,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879635103] [2022-11-19 08:35:58,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879635103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:35:58,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:35:58,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:35:58,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53521345] [2022-11-19 08:35:58,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:35:58,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:35:58,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:35:58,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:35:58,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:35:58,794 INFO L87 Difference]: Start difference. First operand has 1785 states, 1119 states have (on average 1.3297587131367292) internal successors, (1488), 1152 states have internal predecessors, (1488), 557 states have call successors, (557), 108 states have call predecessors, (557), 107 states have return successors, (548), 544 states have call predecessors, (548), 548 states have call successors, (548) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-19 08:36:01,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:04,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:06,567 WARN L539 Checker$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 08:36:09,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:12,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:15,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:17,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:18,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:36:18,379 INFO L93 Difference]: Finished difference Result 5032 states and 7362 transitions. [2022-11-19 08:36:18,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:36:18,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 83 [2022-11-19 08:36:18,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:36:18,419 INFO L225 Difference]: With dead ends: 5032 [2022-11-19 08:36:18,419 INFO L226 Difference]: Without dead ends: 3238 [2022-11-19 08:36:18,436 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 08:36:18,439 INFO L413 NwaCegarLoop]: 2711 mSDtfsCounter, 2138 mSDsluCounter, 2250 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 7 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2142 SdHoareTripleChecker+Valid, 4961 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:36:18,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2142 Valid, 4961 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 663 Invalid, 5 Unknown, 0 Unchecked, 19.2s Time] [2022-11-19 08:36:18,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3238 states. [2022-11-19 08:36:18,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3238 to 3235. [2022-11-19 08:36:18,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3235 states, 2036 states have (on average 1.3163064833005893) internal successors, (2680), 2081 states have internal predecessors, (2680), 995 states have call successors, (995), 204 states have call predecessors, (995), 203 states have return successors, (998), 983 states have call predecessors, (998), 994 states have call successors, (998) [2022-11-19 08:36:18,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 4673 transitions. [2022-11-19 08:36:18,713 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 4673 transitions. Word has length 83 [2022-11-19 08:36:18,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:36:18,715 INFO L495 AbstractCegarLoop]: Abstraction has 3235 states and 4673 transitions. [2022-11-19 08:36:18,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-19 08:36:18,715 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 4673 transitions. [2022-11-19 08:36:18,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-19 08:36:18,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:36:18,728 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:36:18,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:36:18,729 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:36:18,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:36:18,730 INFO L85 PathProgramCache]: Analyzing trace with hash 228494151, now seen corresponding path program 1 times [2022-11-19 08:36:18,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:36:18,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565113749] [2022-11-19 08:36:18,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:18,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:36:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:36:22,355 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-11-19 08:36:22,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:36:22,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565113749] [2022-11-19 08:36:22,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565113749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:36:22,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:36:22,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:36:22,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335561827] [2022-11-19 08:36:22,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:36:22,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:36:22,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:36:22,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:36:22,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:36:22,359 INFO L87 Difference]: Start difference. First operand 3235 states and 4673 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 08:36:24,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:28,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:31,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:35,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:37,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:40,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:42,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:44,486 WARN L539 Checker$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 08:36:46,538 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 08:36:48,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:36:48,707 INFO L93 Difference]: Finished difference Result 6191 states and 8985 transitions. [2022-11-19 08:36:48,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:36:48,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 85 [2022-11-19 08:36:48,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:36:48,751 INFO L225 Difference]: With dead ends: 6191 [2022-11-19 08:36:48,751 INFO L226 Difference]: Without dead ends: 6186 [2022-11-19 08:36:48,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:36:48,757 INFO L413 NwaCegarLoop]: 2710 mSDtfsCounter, 2129 mSDsluCounter, 4954 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2133 SdHoareTripleChecker+Valid, 7664 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:36:48,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2133 Valid, 7664 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 995 Invalid, 8 Unknown, 0 Unchecked, 26.0s Time] [2022-11-19 08:36:48,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6186 states. [2022-11-19 08:36:49,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6186 to 6175. [2022-11-19 08:36:49,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6175 states, 3883 states have (on average 1.3172804532577904) internal successors, (5115), 3978 states have internal predecessors, (5115), 1895 states have call successors, (1895), 399 states have call predecessors, (1895), 396 states have return successors, (1956), 1863 states have call predecessors, (1956), 1894 states have call successors, (1956) [2022-11-19 08:36:49,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6175 states to 6175 states and 8966 transitions. [2022-11-19 08:36:49,087 INFO L78 Accepts]: Start accepts. Automaton has 6175 states and 8966 transitions. Word has length 85 [2022-11-19 08:36:49,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:36:49,090 INFO L495 AbstractCegarLoop]: Abstraction has 6175 states and 8966 transitions. [2022-11-19 08:36:49,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 08:36:49,090 INFO L276 IsEmpty]: Start isEmpty. Operand 6175 states and 8966 transitions. [2022-11-19 08:36:49,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-19 08:36:49,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:36:49,109 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:36:49,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:36:49,109 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:36:49,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:36:49,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1664349022, now seen corresponding path program 1 times [2022-11-19 08:36:49,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:36:49,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80094347] [2022-11-19 08:36:49,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:49,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:36:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:36:51,193 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-19 08:36:51,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:36:51,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80094347] [2022-11-19 08:36:51,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80094347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:36:51,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:36:51,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:36:51,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769375426] [2022-11-19 08:36:51,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:36:51,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:36:51,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:36:51,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:36:51,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:36:51,196 INFO L87 Difference]: Start difference. First operand 6175 states and 8966 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, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-19 08:36:53,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:56,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:59,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:01,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:04,845 WARN L539 Checker$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 08:37:07,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:09,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:11,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:37:11,538 INFO L93 Difference]: Finished difference Result 17940 states and 26037 transitions. [2022-11-19 08:37:11,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:37:11,539 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, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 152 [2022-11-19 08:37:11,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:37:11,615 INFO L225 Difference]: With dead ends: 17940 [2022-11-19 08:37:11,615 INFO L226 Difference]: Without dead ends: 11790 [2022-11-19 08:37:11,649 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 08:37:11,650 INFO L413 NwaCegarLoop]: 2676 mSDtfsCounter, 2037 mSDsluCounter, 2215 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2041 SdHoareTripleChecker+Valid, 4891 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:37:11,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2041 Valid, 4891 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 669 Invalid, 5 Unknown, 0 Unchecked, 20.0s Time] [2022-11-19 08:37:11,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11790 states. [2022-11-19 08:37:12,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11790 to 11781. [2022-11-19 08:37:12,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11781 states, 7411 states have (on average 1.3170962083389557) internal successors, (9761), 7588 states have internal predecessors, (9761), 3605 states have call successors, (3605), 769 states have call predecessors, (3605), 764 states have return successors, (3730), 3541 states have call predecessors, (3730), 3604 states have call successors, (3730) [2022-11-19 08:37:12,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11781 states to 11781 states and 17096 transitions. [2022-11-19 08:37:12,583 INFO L78 Accepts]: Start accepts. Automaton has 11781 states and 17096 transitions. Word has length 152 [2022-11-19 08:37:12,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:37:12,584 INFO L495 AbstractCegarLoop]: Abstraction has 11781 states and 17096 transitions. [2022-11-19 08:37:12,585 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, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-19 08:37:12,586 INFO L276 IsEmpty]: Start isEmpty. Operand 11781 states and 17096 transitions. [2022-11-19 08:37:12,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-19 08:37:12,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:37:12,621 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:37:12,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:37:12,621 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:37:12,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:37:12,623 INFO L85 PathProgramCache]: Analyzing trace with hash -32622533, now seen corresponding path program 1 times [2022-11-19 08:37:12,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:37:12,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774267027] [2022-11-19 08:37:12,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:37:12,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:37:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:37:16,875 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 568 trivial. 0 not checked. [2022-11-19 08:37:16,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:37:16,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774267027] [2022-11-19 08:37:16,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774267027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:37:16,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:37:16,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:37:16,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568109677] [2022-11-19 08:37:16,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:37:16,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:37:16,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:37:16,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:37:16,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:37:16,878 INFO L87 Difference]: Start difference. First operand 11781 states and 17096 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 08:37:19,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:23,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:25,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:28,014 WARN L539 Checker$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 08:37:30,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:34,710 WARN L539 Checker$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 08:37:37,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:37:37,913 INFO L93 Difference]: Finished difference Result 17723 states and 25775 transitions. [2022-11-19 08:37:37,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:37:37,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 205 [2022-11-19 08:37:37,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:37:38,025 INFO L225 Difference]: With dead ends: 17723 [2022-11-19 08:37:38,025 INFO L226 Difference]: Without dead ends: 17718 [2022-11-19 08:37:38,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:37:38,040 INFO L413 NwaCegarLoop]: 2928 mSDtfsCounter, 2355 mSDsluCounter, 5172 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2359 SdHoareTripleChecker+Valid, 8100 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:37:38,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2359 Valid, 8100 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1084 Invalid, 6 Unknown, 0 Unchecked, 20.6s Time] [2022-11-19 08:37:38,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17718 states. [2022-11-19 08:37:38,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17718 to 17700. [2022-11-19 08:37:38,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17700 states, 11135 states have (on average 1.3172878311629996) internal successors, (14668), 11405 states have internal predecessors, (14668), 5419 states have call successors, (5419), 1154 states have call predecessors, (5419), 1145 states have return successors, (5658), 5317 states have call predecessors, (5658), 5418 states have call successors, (5658) [2022-11-19 08:37:38,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17700 states to 17700 states and 25745 transitions. [2022-11-19 08:37:38,944 INFO L78 Accepts]: Start accepts. Automaton has 17700 states and 25745 transitions. Word has length 205 [2022-11-19 08:37:38,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:37:38,946 INFO L495 AbstractCegarLoop]: Abstraction has 17700 states and 25745 transitions. [2022-11-19 08:37:38,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 08:37:38,947 INFO L276 IsEmpty]: Start isEmpty. Operand 17700 states and 25745 transitions. [2022-11-19 08:37:38,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-19 08:37:38,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:37:38,987 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:37:38,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:37:38,988 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:37:38,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:37:38,989 INFO L85 PathProgramCache]: Analyzing trace with hash -2060415862, now seen corresponding path program 1 times [2022-11-19 08:37:38,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:37:38,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756790589] [2022-11-19 08:37:38,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:37:38,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:37:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:37:40,906 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2022-11-19 08:37:40,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:37:40,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756790589] [2022-11-19 08:37:40,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756790589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:37:40,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:37:40,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:37:40,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431272479] [2022-11-19 08:37:40,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:37:40,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:37:40,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:37:40,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:37:40,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:37:40,909 INFO L87 Difference]: Start difference. First operand 17700 states and 25745 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-19 08:37:43,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:46,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:48,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:50,815 WARN L539 Checker$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 08:37:53,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:59,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:37:59,445 INFO L93 Difference]: Finished difference Result 42105 states and 61016 transitions. [2022-11-19 08:37:59,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:37:59,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 310 [2022-11-19 08:37:59,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:37:59,681 INFO L225 Difference]: With dead ends: 42105 [2022-11-19 08:37:59,682 INFO L226 Difference]: Without dead ends: 24430 [2022-11-19 08:37:59,756 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 08:37:59,758 INFO L413 NwaCegarLoop]: 2772 mSDtfsCounter, 1558 mSDsluCounter, 2129 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 6 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1560 SdHoareTripleChecker+Valid, 4901 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:37:59,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1560 Valid, 4901 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 803 Invalid, 5 Unknown, 0 Unchecked, 17.9s Time] [2022-11-19 08:37:59,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24430 states. [2022-11-19 08:38:01,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24430 to 24413. [2022-11-19 08:38:01,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24413 states, 15355 states have (on average 1.3135135135135134) internal successors, (20169), 15775 states have internal predecessors, (20169), 7403 states have call successors, (7403), 1667 states have call predecessors, (7403), 1654 states have return successors, (7708), 7235 states have call predecessors, (7708), 7402 states have call successors, (7708) [2022-11-19 08:38:01,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24413 states to 24413 states and 35280 transitions. [2022-11-19 08:38:01,205 INFO L78 Accepts]: Start accepts. Automaton has 24413 states and 35280 transitions. Word has length 310 [2022-11-19 08:38:01,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:38:01,206 INFO L495 AbstractCegarLoop]: Abstraction has 24413 states and 35280 transitions. [2022-11-19 08:38:01,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-19 08:38:01,206 INFO L276 IsEmpty]: Start isEmpty. Operand 24413 states and 35280 transitions. [2022-11-19 08:38:01,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-11-19 08:38:01,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:38:01,234 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:38:01,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:38:01,235 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:38:01,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:38:01,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1141768459, now seen corresponding path program 1 times [2022-11-19 08:38:01,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:38:01,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979574772] [2022-11-19 08:38:01,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:38:01,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:38:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:38:03,418 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2022-11-19 08:38:03,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:38:03,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979574772] [2022-11-19 08:38:03,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979574772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:38:03,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:38:03,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:38:03,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288981409] [2022-11-19 08:38:03,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:38:03,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:38:03,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:38:03,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:38:03,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:38:03,421 INFO L87 Difference]: Start difference. First operand 24413 states and 35280 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-19 08:38:05,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:08,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:12,094 WARN L539 Checker$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 08:38:14,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:16,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:18,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:20,751 WARN L539 Checker$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 08:38:25,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:38:25,243 INFO L93 Difference]: Finished difference Result 67845 states and 97500 transitions. [2022-11-19 08:38:25,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:38:25,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 288 [2022-11-19 08:38:25,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:38:25,460 INFO L225 Difference]: With dead ends: 67845 [2022-11-19 08:38:25,460 INFO L226 Difference]: Without dead ends: 43460 [2022-11-19 08:38:25,546 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 08:38:25,547 INFO L413 NwaCegarLoop]: 3310 mSDtfsCounter, 1848 mSDsluCounter, 2190 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 5500 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:38:25,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1852 Valid, 5500 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 800 Invalid, 6 Unknown, 0 Unchecked, 20.6s Time] [2022-11-19 08:38:25,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43460 states. [2022-11-19 08:38:28,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43460 to 43447. [2022-11-19 08:38:28,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43447 states, 27071 states have (on average 1.3011340548926895) internal successors, (35223), 27831 states have internal predecessors, (35223), 13239 states have call successors, (13239), 3157 states have call predecessors, (13239), 3136 states have return successors, (13766), 12933 states have call predecessors, (13766), 13238 states have call successors, (13766) [2022-11-19 08:38:28,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43447 states to 43447 states and 62228 transitions. [2022-11-19 08:38:28,581 INFO L78 Accepts]: Start accepts. Automaton has 43447 states and 62228 transitions. Word has length 288 [2022-11-19 08:38:28,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:38:28,582 INFO L495 AbstractCegarLoop]: Abstraction has 43447 states and 62228 transitions. [2022-11-19 08:38:28,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-19 08:38:28,582 INFO L276 IsEmpty]: Start isEmpty. Operand 43447 states and 62228 transitions. [2022-11-19 08:38:28,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2022-11-19 08:38:28,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:38:28,656 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 6, 6, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:38:28,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:38:28,657 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:38:28,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:38:28,657 INFO L85 PathProgramCache]: Analyzing trace with hash 924487096, now seen corresponding path program 1 times [2022-11-19 08:38:28,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:38:28,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657345353] [2022-11-19 08:38:28,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:38:28,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:38:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:38:33,825 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2022-11-19 08:38:33,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:38:33,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657345353] [2022-11-19 08:38:33,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657345353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:38:33,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:38:33,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 08:38:33,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433181854] [2022-11-19 08:38:33,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:38:33,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 08:38:33,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:38:33,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 08:38:33,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:38:33,829 INFO L87 Difference]: Start difference. First operand 43447 states and 62228 transitions. Second operand has 8 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 3 states have call successors, (56), 2 states have call predecessors, (56), 3 states have return successors, (55), 4 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-19 08:38:35,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:39,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:47,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:50,512 WARN L539 Checker$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 08:38:54,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:57,563 WARN L539 Checker$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 08:39:04,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:39:04,435 INFO L93 Difference]: Finished difference Result 87186 states and 125825 transitions. [2022-11-19 08:39:04,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 08:39:04,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 3 states have call successors, (56), 2 states have call predecessors, (56), 3 states have return successors, (55), 4 states have call predecessors, (55), 3 states have call successors, (55) Word has length 339 [2022-11-19 08:39:04,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:39:04,652 INFO L225 Difference]: With dead ends: 87186 [2022-11-19 08:39:04,652 INFO L226 Difference]: Without dead ends: 43767 [2022-11-19 08:39:05,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-19 08:39:05,049 INFO L413 NwaCegarLoop]: 2190 mSDtfsCounter, 14 mSDsluCounter, 13081 mSDsCounter, 0 mSdLazyCounter, 2598 mSolverCounterSat, 8 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 15271 SdHoareTripleChecker+Invalid, 2612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2598 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:39:05,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 15271 Invalid, 2612 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 2598 Invalid, 6 Unknown, 0 Unchecked, 28.7s Time] [2022-11-19 08:39:05,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43767 states. [2022-11-19 08:39:07,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43767 to 43567. [2022-11-19 08:39:07,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43567 states, 27151 states have (on average 1.3002467680748406) internal successors, (35303), 27871 states have internal predecessors, (35303), 13279 states have call successors, (13279), 3157 states have call predecessors, (13279), 3136 states have return successors, (13806), 12973 states have call predecessors, (13806), 13278 states have call successors, (13806) [2022-11-19 08:39:07,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43567 states to 43567 states and 62388 transitions. [2022-11-19 08:39:07,295 INFO L78 Accepts]: Start accepts. Automaton has 43567 states and 62388 transitions. Word has length 339 [2022-11-19 08:39:07,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:39:07,296 INFO L495 AbstractCegarLoop]: Abstraction has 43567 states and 62388 transitions. [2022-11-19 08:39:07,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 3 states have call successors, (56), 2 states have call predecessors, (56), 3 states have return successors, (55), 4 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-19 08:39:07,296 INFO L276 IsEmpty]: Start isEmpty. Operand 43567 states and 62388 transitions. [2022-11-19 08:39:07,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-11-19 08:39:07,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:39:07,363 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 6, 6, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:39:07,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:39:07,364 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:39:07,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:39:07,364 INFO L85 PathProgramCache]: Analyzing trace with hash 220255123, now seen corresponding path program 1 times [2022-11-19 08:39:07,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:39:07,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218969161] [2022-11-19 08:39:07,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:39:07,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:39:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:39:10,971 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2022-11-19 08:39:10,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:39:10,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218969161] [2022-11-19 08:39:10,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218969161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:39:10,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:39:10,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:39:10,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924188364] [2022-11-19 08:39:10,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:39:10,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:39:10,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:39:10,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:39:10,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:39:10,976 INFO L87 Difference]: Start difference. First operand 43567 states and 62388 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-19 08:39:13,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:39:15,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:39:19,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:39:22,069 WARN L539 Checker$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 08:39:24,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:39:26,901 WARN L539 Checker$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 08:39:30,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:39:30,304 INFO L93 Difference]: Finished difference Result 87626 states and 126424 transitions. [2022-11-19 08:39:30,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:39:30,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 342 [2022-11-19 08:39:30,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:39:30,487 INFO L225 Difference]: With dead ends: 87626 [2022-11-19 08:39:30,487 INFO L226 Difference]: Without dead ends: 44087 [2022-11-19 08:39:30,621 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 08:39:30,622 INFO L413 NwaCegarLoop]: 2229 mSDtfsCounter, 11 mSDsluCounter, 2223 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4452 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:39:30,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 4452 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 650 Invalid, 6 Unknown, 0 Unchecked, 17.7s Time] [2022-11-19 08:39:30,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44087 states. [2022-11-19 08:39:32,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44087 to 43607. [2022-11-19 08:39:32,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43607 states, 27191 states have (on average 1.2998050825640837) internal successors, (35343), 27911 states have internal predecessors, (35343), 13279 states have call successors, (13279), 3157 states have call predecessors, (13279), 3136 states have return successors, (13806), 12973 states have call predecessors, (13806), 13278 states have call successors, (13806) [2022-11-19 08:39:33,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43607 states to 43607 states and 62428 transitions. [2022-11-19 08:39:33,192 INFO L78 Accepts]: Start accepts. Automaton has 43607 states and 62428 transitions. Word has length 342 [2022-11-19 08:39:33,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:39:33,193 INFO L495 AbstractCegarLoop]: Abstraction has 43607 states and 62428 transitions. [2022-11-19 08:39:33,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-19 08:39:33,193 INFO L276 IsEmpty]: Start isEmpty. Operand 43607 states and 62428 transitions. [2022-11-19 08:39:33,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-11-19 08:39:33,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:39:33,294 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 6, 6, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:39:33,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:39:33,295 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:39:33,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:39:33,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1833046414, now seen corresponding path program 1 times [2022-11-19 08:39:33,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:39:33,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818490869] [2022-11-19 08:39:33,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:39:33,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:39:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:39:35,703 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2022-11-19 08:39:35,703 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:39:35,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818490869] [2022-11-19 08:39:35,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818490869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:39:35,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:39:35,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:39:35,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673777654] [2022-11-19 08:39:35,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:39:35,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:39:35,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:39:35,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:39:35,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:39:35,706 INFO L87 Difference]: Start difference. First operand 43607 states and 62428 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-19 08:39:37,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:39:40,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []