./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/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_9855778e-363f-4a61-96c1-833b1dc6d20d/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/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_9855778e-363f-4a61-96c1-833b1dc6d20d/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 7a2974a33527a9392dca8d355734fee3e0faaae6e14749128119c28fd0f37e8f --- 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 07:07:34,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:07:34,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:07:34,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:07:34,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:07:34,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:07:34,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:07:34,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:07:34,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:07:34,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:07:34,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:07:34,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:07:34,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:07:34,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:07:34,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:07:34,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:07:34,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:07:34,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:07:34,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:07:34,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:07:34,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:07:34,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:07:34,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:07:34,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:07:34,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:07:34,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:07:34,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:07:34,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:07:34,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:07:34,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:07:34,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:07:34,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:07:34,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:07:34,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:07:34,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:07:34,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:07:34,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:07:34,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:07:34,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:07:34,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:07:34,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:07:34,280 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:07:34,302 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:07:34,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:07:34,302 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:07:34,303 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:07:34,303 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:07:34,304 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:07:34,304 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:07:34,304 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:07:34,304 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:07:34,305 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:07:34,305 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:07:34,305 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:07:34,305 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:07:34,306 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:07:34,306 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:07:34,306 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:07:34,307 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:07:34,307 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:07:34,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:07:34,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:07:34,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:07:34,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:07:34,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:07:34,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:07:34,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:07:34,309 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:07:34,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:07:34,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:07:34,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:07:34,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:07:34,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:07:34,311 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:07:34,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:07:34,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:07:34,312 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:07:34,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:07:34,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:07:34,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:07:34,312 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_9855778e-363f-4a61-96c1-833b1dc6d20d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a2974a33527a9392dca8d355734fee3e0faaae6e14749128119c28fd0f37e8f [2022-11-19 07:07:34,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:07:34,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:07:34,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:07:34,626 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:07:34,627 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:07:34,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i [2022-11-19 07:07:34,720 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/bin/utaipan-I9t0OCRTmS/data/f3f798d12/e8ca9e2e7033438a802f52033ee0a66e/FLAG73c66de51 [2022-11-19 07:07:35,728 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:07:35,729 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i [2022-11-19 07:07:35,792 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/bin/utaipan-I9t0OCRTmS/data/f3f798d12/e8ca9e2e7033438a802f52033ee0a66e/FLAG73c66de51 [2022-11-19 07:07:36,079 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/bin/utaipan-I9t0OCRTmS/data/f3f798d12/e8ca9e2e7033438a802f52033ee0a66e [2022-11-19 07:07:36,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:07:36,083 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:07:36,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:07:36,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:07:36,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:07:36,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:07:36" (1/1) ... [2022-11-19 07:07:36,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fac3d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:36, skipping insertion in model container [2022-11-19 07:07:36,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:07:36" (1/1) ... [2022-11-19 07:07:36,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:07:36,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:07:39,115 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_9855778e-363f-4a61-96c1-833b1dc6d20d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i[386204,386217] [2022-11-19 07:07:39,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:07:39,250 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:07:39,800 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_9855778e-363f-4a61-96c1-833b1dc6d20d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i[386204,386217] [2022-11-19 07:07:39,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:07:39,974 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:07:39,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:39 WrapperNode [2022-11-19 07:07:39,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:07:39,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:07:39,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:07:39,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:07:39,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:39" (1/1) ... [2022-11-19 07:07:40,115 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:39" (1/1) ... [2022-11-19 07:07:40,439 INFO L138 Inliner]: procedures = 333, calls = 3698, calls flagged for inlining = 139, calls inlined = 136, statements flattened = 7052 [2022-11-19 07:07:40,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:07:40,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:07:40,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:07:40,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:07:40,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:39" (1/1) ... [2022-11-19 07:07:40,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:39" (1/1) ... [2022-11-19 07:07:40,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:39" (1/1) ... [2022-11-19 07:07:40,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:39" (1/1) ... [2022-11-19 07:07:40,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:39" (1/1) ... [2022-11-19 07:07:40,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:39" (1/1) ... [2022-11-19 07:07:40,950 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:39" (1/1) ... [2022-11-19 07:07:40,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:39" (1/1) ... [2022-11-19 07:07:41,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:07:41,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:07:41,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:07:41,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:07:41,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:39" (1/1) ... [2022-11-19 07:07:41,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:07:41,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:07:41,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:07:41,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:07:41,106 INFO L130 BoogieDeclarations]: Found specification of procedure disable_ast [2022-11-19 07:07:41,106 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_ast [2022-11-19 07:07:41,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-19 07:07:41,107 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-19 07:07:41,107 INFO L130 BoogieDeclarations]: Found specification of procedure type3_infoblock [2022-11-19 07:07:41,107 INFO L138 BoogieDeclarations]: Found implementation of procedure type3_infoblock [2022-11-19 07:07:41,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:07:41,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:07:41,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:07:41,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:07:41,108 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_interrupt [2022-11-19 07:07:41,108 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_interrupt [2022-11-19 07:07:41,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:07:41,108 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:07:41,109 INFO L130 BoogieDeclarations]: Found specification of procedure reset_init_sia [2022-11-19 07:07:41,109 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_init_sia [2022-11-19 07:07:41,109 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-19 07:07:41,109 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-19 07:07:41,109 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 07:07:41,109 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 07:07:41,110 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_alloc_rx_buff [2022-11-19 07:07:41,110 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_alloc_rx_buff [2022-11-19 07:07:41,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-19 07:07:41,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-19 07:07:41,110 INFO L130 BoogieDeclarations]: Found specification of procedure test_for_100Mb [2022-11-19 07:07:41,110 INFO L138 BoogieDeclarations]: Found implementation of procedure test_for_100Mb [2022-11-19 07:07:41,111 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:07:41,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:07:41,111 INFO L130 BoogieDeclarations]: Found specification of procedure type4_infoblock [2022-11-19 07:07:41,111 INFO L138 BoogieDeclarations]: Found implementation of procedure type4_infoblock [2022-11-19 07:07:41,111 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_put_cache [2022-11-19 07:07:41,111 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_put_cache [2022-11-19 07:07:41,111 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2022-11-19 07:07:41,112 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2022-11-19 07:07:41,112 INFO L130 BoogieDeclarations]: Found specification of procedure type5_infoblock [2022-11-19 07:07:41,112 INFO L138 BoogieDeclarations]: Found implementation of procedure type5_infoblock [2022-11-19 07:07:41,112 INFO L130 BoogieDeclarations]: Found specification of procedure load_packet [2022-11-19 07:07:41,112 INFO L138 BoogieDeclarations]: Found implementation of procedure load_packet [2022-11-19 07:07:41,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:07:41,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:07:41,113 INFO L130 BoogieDeclarations]: Found specification of procedure getfrom_mii [2022-11-19 07:07:41,113 INFO L138 BoogieDeclarations]: Found implementation of procedure getfrom_mii [2022-11-19 07:07:41,113 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140m_autoconf [2022-11-19 07:07:41,113 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140m_autoconf [2022-11-19 07:07:41,114 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_switch_mac_port [2022-11-19 07:07:41,114 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_switch_mac_port [2022-11-19 07:07:41,114 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 07:07:41,114 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 07:07:41,115 INFO L130 BoogieDeclarations]: Found specification of procedure srom_latch [2022-11-19 07:07:41,116 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_latch [2022-11-19 07:07:41,116 INFO L130 BoogieDeclarations]: Found specification of procedure is_100_up [2022-11-19 07:07:41,116 INFO L138 BoogieDeclarations]: Found implementation of procedure is_100_up [2022-11-19 07:07:41,117 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_open [2022-11-19 07:07:41,117 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_open [2022-11-19 07:07:41,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:07:41,117 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:07:41,117 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ta [2022-11-19 07:07:41,117 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ta [2022-11-19 07:07:41,117 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2022-11-19 07:07:41,118 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2022-11-19 07:07:41,119 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:07:41,119 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:07:41,119 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 07:07:41,119 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 07:07:41,119 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_autoconf [2022-11-19 07:07:41,119 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_autoconf [2022-11-19 07:07:41,119 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2022-11-19 07:07:41,120 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2022-11-19 07:07:41,120 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 07:07:41,120 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 07:07:41,120 INFO L130 BoogieDeclarations]: Found specification of procedure build_setup_frame [2022-11-19 07:07:41,120 INFO L138 BoogieDeclarations]: Found implementation of procedure build_setup_frame [2022-11-19 07:07:41,121 INFO L130 BoogieDeclarations]: Found specification of procedure type2_infoblock [2022-11-19 07:07:41,121 INFO L138 BoogieDeclarations]: Found implementation of procedure type2_infoblock [2022-11-19 07:07:41,121 INFO L130 BoogieDeclarations]: Found specification of procedure test_mii_reg [2022-11-19 07:07:41,122 INFO L138 BoogieDeclarations]: Found implementation of procedure test_mii_reg [2022-11-19 07:07:41,122 INFO L130 BoogieDeclarations]: Found specification of procedure type0_infoblock [2022-11-19 07:07:41,122 INFO L138 BoogieDeclarations]: Found implementation of procedure type0_infoblock [2022-11-19 07:07:41,122 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_cache_state [2022-11-19 07:07:41,122 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_cache_state [2022-11-19 07:07:41,122 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-19 07:07:41,122 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-19 07:07:41,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:07:41,123 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_dbg_media [2022-11-19 07:07:41,123 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_dbg_media [2022-11-19 07:07:41,124 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2022-11-19 07:07:41,124 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2022-11-19 07:07:41,124 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 07:07:41,125 INFO L130 BoogieDeclarations]: Found specification of procedure autoconf_media [2022-11-19 07:07:41,125 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconf_media [2022-11-19 07:07:41,125 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_autoconf [2022-11-19 07:07:41,125 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_autoconf [2022-11-19 07:07:41,126 INFO L130 BoogieDeclarations]: Found specification of procedure mii_rd [2022-11-19 07:07:41,126 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_rd [2022-11-19 07:07:41,126 INFO L130 BoogieDeclarations]: Found specification of procedure DevicePresent [2022-11-19 07:07:41,127 INFO L138 BoogieDeclarations]: Found implementation of procedure DevicePresent [2022-11-19 07:07:41,127 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-11-19 07:07:41,127 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-11-19 07:07:41,127 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ast [2022-11-19 07:07:41,127 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ast [2022-11-19 07:07:41,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:07:41,127 INFO L130 BoogieDeclarations]: Found specification of procedure dc21143_infoleaf [2022-11-19 07:07:41,128 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21143_infoleaf [2022-11-19 07:07:41,128 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2022-11-19 07:07:41,128 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2022-11-19 07:07:41,128 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 07:07:41,129 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 07:07:41,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-19 07:07:41,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-19 07:07:41,130 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 07:07:41,130 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 07:07:41,133 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2022-11-19 07:07:41,133 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2022-11-19 07:07:41,133 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2022-11-19 07:07:41,133 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_sw_reset [2022-11-19 07:07:41,134 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_sw_reset [2022-11-19 07:07:41,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:07:41,137 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2022-11-19 07:07:41,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2022-11-19 07:07:41,137 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-19 07:07:41,143 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-19 07:07:41,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:07:41,143 INFO L130 BoogieDeclarations]: Found specification of procedure is_10_up [2022-11-19 07:07:41,143 INFO L138 BoogieDeclarations]: Found implementation of procedure is_10_up [2022-11-19 07:07:41,143 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-19 07:07:41,143 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-19 07:07:41,144 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-11-19 07:07:41,144 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-11-19 07:07:41,144 INFO L130 BoogieDeclarations]: Found specification of procedure is_anc_capable [2022-11-19 07:07:41,144 INFO L138 BoogieDeclarations]: Found implementation of procedure is_anc_capable [2022-11-19 07:07:41,144 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-19 07:07:41,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-19 07:07:41,144 INFO L130 BoogieDeclarations]: Found specification of procedure type1_infoblock [2022-11-19 07:07:41,145 INFO L138 BoogieDeclarations]: Found implementation of procedure type1_infoblock [2022-11-19 07:07:41,145 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-11-19 07:07:41,145 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-11-19 07:07:41,145 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 07:07:41,145 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 07:07:41,145 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-19 07:07:41,145 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-19 07:07:41,146 INFO L130 BoogieDeclarations]: Found specification of procedure is_spd_100 [2022-11-19 07:07:41,146 INFO L138 BoogieDeclarations]: Found implementation of procedure is_spd_100 [2022-11-19 07:07:41,146 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140_infoleaf [2022-11-19 07:07:41,146 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140_infoleaf [2022-11-19 07:07:41,146 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 07:07:41,146 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 07:07:41,146 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 07:07:41,147 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 07:07:41,147 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-19 07:07:41,147 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-19 07:07:41,147 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_queue_pkt [2022-11-19 07:07:41,147 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_queue_pkt [2022-11-19 07:07:41,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 07:07:41,147 INFO L130 BoogieDeclarations]: Found specification of procedure sendto_mii [2022-11-19 07:07:41,148 INFO L138 BoogieDeclarations]: Found implementation of procedure sendto_mii [2022-11-19 07:07:41,148 INFO L130 BoogieDeclarations]: Found specification of procedure test_media [2022-11-19 07:07:41,148 INFO L138 BoogieDeclarations]: Found implementation of procedure test_media [2022-11-19 07:07:41,148 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_rx_buffs [2022-11-19 07:07:41,148 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_rx_buffs [2022-11-19 07:07:41,148 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 07:07:41,148 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 07:07:41,149 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 07:07:41,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 07:07:41,149 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-19 07:07:41,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-19 07:07:41,149 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_tx_buffs [2022-11-19 07:07:41,149 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_tx_buffs [2022-11-19 07:07:41,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:07:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2022-11-19 07:07:41,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2022-11-19 07:07:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-19 07:07:41,150 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-19 07:07:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:07:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 07:07:41,150 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 07:07:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 07:07:41,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 07:07:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2022-11-19 07:07:41,151 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2022-11-19 07:07:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:07:41,151 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:07:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init [2022-11-19 07:07:41,152 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init [2022-11-19 07:07:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure ping_media [2022-11-19 07:07:41,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ping_media [2022-11-19 07:07:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-19 07:07:41,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-19 07:07:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-19 07:07:41,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-19 07:07:41,153 INFO L130 BoogieDeclarations]: Found specification of procedure srom_autoconf [2022-11-19 07:07:41,153 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_autoconf [2022-11-19 07:07:41,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:07:41,153 INFO L130 BoogieDeclarations]: Found specification of procedure srom_exec [2022-11-19 07:07:41,153 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_exec [2022-11-19 07:07:41,153 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-19 07:07:41,153 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-19 07:07:41,154 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-19 07:07:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-19 07:07:41,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:07:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:07:41,154 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_tx [2022-11-19 07:07:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_tx [2022-11-19 07:07:41,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 07:07:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 07:07:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure gep_wr [2022-11-19 07:07:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure gep_wr [2022-11-19 07:07:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-11-19 07:07:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-11-19 07:07:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure srom_rd [2022-11-19 07:07:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_rd [2022-11-19 07:07:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:07:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 07:07:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 07:07:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure sendto_srom [2022-11-19 07:07:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure sendto_srom [2022-11-19 07:07:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 07:07:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 07:07:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure SetMulticastFilter [2022-11-19 07:07:41,157 INFO L138 BoogieDeclarations]: Found implementation of procedure SetMulticastFilter [2022-11-19 07:07:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-19 07:07:41,157 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-19 07:07:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:07:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ioctl [2022-11-19 07:07:41,157 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ioctl [2022-11-19 07:07:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_get_cache [2022-11-19 07:07:41,158 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_get_cache [2022-11-19 07:07:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 07:07:41,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 07:07:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:07:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-19 07:07:41,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-19 07:07:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure getfrom_srom [2022-11-19 07:07:41,159 INFO L138 BoogieDeclarations]: Found implementation of procedure getfrom_srom [2022-11-19 07:07:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_3 [2022-11-19 07:07:41,159 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_3 [2022-11-19 07:07:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2022-11-19 07:07:41,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2022-11-19 07:07:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 07:07:41,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 07:07:41,164 INFO L130 BoogieDeclarations]: Found specification of procedure mii_swap [2022-11-19 07:07:41,164 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_swap [2022-11-19 07:07:41,164 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_suspect_state [2022-11-19 07:07:41,165 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_suspect_state [2022-11-19 07:07:41,165 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_dbg_mii [2022-11-19 07:07:41,165 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_dbg_mii [2022-11-19 07:07:41,165 INFO L130 BoogieDeclarations]: Found specification of procedure compact_infoblock [2022-11-19 07:07:41,165 INFO L138 BoogieDeclarations]: Found implementation of procedure compact_infoblock [2022-11-19 07:07:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure gep_rd [2022-11-19 07:07:41,166 INFO L138 BoogieDeclarations]: Found implementation of procedure gep_rd [2022-11-19 07:07:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure mii_address [2022-11-19 07:07:41,167 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_address [2022-11-19 07:07:41,167 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_reset_phy [2022-11-19 07:07:41,167 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_reset_phy [2022-11-19 07:07:41,167 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_putb_cache [2022-11-19 07:07:41,167 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_putb_cache [2022-11-19 07:07:41,167 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_tx_buff [2022-11-19 07:07:41,167 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_tx_buff [2022-11-19 07:07:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_setup_intr [2022-11-19 07:07:41,168 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_setup_intr [2022-11-19 07:07:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure dc21142_infoleaf [2022-11-19 07:07:41,168 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21142_infoleaf [2022-11-19 07:07:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_get_stats [2022-11-19 07:07:41,168 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_get_stats [2022-11-19 07:07:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_save_skbs [2022-11-19 07:07:41,169 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_save_skbs [2022-11-19 07:07:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure dc2114x_autoconf [2022-11-19 07:07:41,169 INFO L138 BoogieDeclarations]: Found implementation of procedure dc2114x_autoconf [2022-11-19 07:07:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-19 07:07:41,169 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-19 07:07:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-19 07:07:41,169 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-19 07:07:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure srom_map_media [2022-11-19 07:07:41,170 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_map_media [2022-11-19 07:07:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-19 07:07:41,170 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-19 07:07:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_close [2022-11-19 07:07:41,170 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_close [2022-11-19 07:07:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure yawn [2022-11-19 07:07:41,170 INFO L138 BoogieDeclarations]: Found implementation of procedure yawn [2022-11-19 07:07:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure mii_wdata [2022-11-19 07:07:41,171 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_wdata [2022-11-19 07:07:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:07:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init_connection [2022-11-19 07:07:41,171 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init_connection [2022-11-19 07:07:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure mii_wr [2022-11-19 07:07:41,171 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_wr [2022-11-19 07:07:41,172 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-19 07:07:41,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:07:41,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:07:41,172 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_state [2022-11-19 07:07:41,172 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_state [2022-11-19 07:07:42,374 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:07:42,379 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:07:42,847 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:08:02,479 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:08:07,111 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:08:07,111 INFO L300 CfgBuilder]: Removed 31 assume(true) statements. [2022-11-19 07:08:07,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:08:07 BoogieIcfgContainer [2022-11-19 07:08:07,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:08:07,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:08:07,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:08:07,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:08:07,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:07:36" (1/3) ... [2022-11-19 07:08:07,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4c5ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:08:07, skipping insertion in model container [2022-11-19 07:08:07,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:39" (2/3) ... [2022-11-19 07:08:07,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4c5ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:08:07, skipping insertion in model container [2022-11-19 07:08:07,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:08:07" (3/3) ... [2022-11-19 07:08:07,133 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i [2022-11-19 07:08:07,153 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:08:07,153 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:08:07,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:08:07,298 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;@364b6794, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:08:07,298 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:08:07,312 INFO L276 IsEmpty]: Start isEmpty. Operand has 2706 states, 1731 states have (on average 1.3575967648757943) internal successors, (2350), 1793 states have internal predecessors, (2350), 854 states have call successors, (854), 136 states have call predecessors, (854), 135 states have return successors, (846), 835 states have call predecessors, (846), 846 states have call successors, (846) [2022-11-19 07:08:07,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-19 07:08:07,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:07,345 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-19 07:08:07,346 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:08:07,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:07,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1857942989, now seen corresponding path program 1 times [2022-11-19 07:08:07,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:07,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289919463] [2022-11-19 07:08:07,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:07,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:08,221 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-19 07:08:08,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:08,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289919463] [2022-11-19 07:08:08,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289919463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:08,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:08:08,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:08:08,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717883119] [2022-11-19 07:08:08,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:08,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:08:08,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:08,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:08:08,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:08:08,277 INFO L87 Difference]: Start difference. First operand has 2706 states, 1731 states have (on average 1.3575967648757943) internal successors, (2350), 1793 states have internal predecessors, (2350), 854 states have call successors, (854), 136 states have call predecessors, (854), 135 states have return successors, (846), 835 states have call predecessors, (846), 846 states have call successors, (846) Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 07:08:10,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:08:16,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:16,454 INFO L93 Difference]: Finished difference Result 7765 states and 11873 transitions. [2022-11-19 07:08:16,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:08:16,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 102 [2022-11-19 07:08:16,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:16,535 INFO L225 Difference]: With dead ends: 7765 [2022-11-19 07:08:16,535 INFO L226 Difference]: Without dead ends: 5051 [2022-11-19 07:08:16,572 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 07:08:16,577 INFO L413 NwaCegarLoop]: 4388 mSDtfsCounter, 3578 mSDsluCounter, 3462 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3578 SdHoareTripleChecker+Valid, 7850 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:16,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3578 Valid, 7850 Invalid, 930 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 923 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2022-11-19 07:08:16,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5051 states. [2022-11-19 07:08:17,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5051 to 5045. [2022-11-19 07:08:17,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5045 states, 3207 states have (on average 1.3489242282507017) internal successors, (4326), 3284 states have internal predecessors, (4326), 1578 states have call successors, (1578), 260 states have call predecessors, (1578), 259 states have return successors, (1577), 1555 states have call predecessors, (1577), 1577 states have call successors, (1577) [2022-11-19 07:08:17,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5045 states to 5045 states and 7481 transitions. [2022-11-19 07:08:17,092 INFO L78 Accepts]: Start accepts. Automaton has 5045 states and 7481 transitions. Word has length 102 [2022-11-19 07:08:17,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:17,095 INFO L495 AbstractCegarLoop]: Abstraction has 5045 states and 7481 transitions. [2022-11-19 07:08:17,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 07:08:17,095 INFO L276 IsEmpty]: Start isEmpty. Operand 5045 states and 7481 transitions. [2022-11-19 07:08:17,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-19 07:08:17,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:17,106 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-19 07:08:17,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:08:17,107 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:08:17,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:17,108 INFO L85 PathProgramCache]: Analyzing trace with hash 922252582, now seen corresponding path program 1 times [2022-11-19 07:08:17,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:17,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814314513] [2022-11-19 07:08:17,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:17,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:17,844 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-19 07:08:17,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:17,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814314513] [2022-11-19 07:08:17,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814314513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:17,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:08:17,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:08:17,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562472137] [2022-11-19 07:08:17,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:17,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:08:17,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:17,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:08:17,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:08:17,851 INFO L87 Difference]: Start difference. First operand 5045 states and 7481 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:08:19,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:08:27,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:27,868 INFO L93 Difference]: Finished difference Result 15121 states and 22576 transitions. [2022-11-19 07:08:27,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:08:27,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 131 [2022-11-19 07:08:27,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:27,954 INFO L225 Difference]: With dead ends: 15121 [2022-11-19 07:08:27,954 INFO L226 Difference]: Without dead ends: 10093 [2022-11-19 07:08:27,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:08:27,999 INFO L413 NwaCegarLoop]: 4767 mSDtfsCounter, 3917 mSDsluCounter, 13086 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3921 SdHoareTripleChecker+Valid, 17853 SdHoareTripleChecker+Invalid, 1880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:27,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3921 Valid, 17853 Invalid, 1880 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1876 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2022-11-19 07:08:28,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10093 states. [2022-11-19 07:08:28,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10093 to 10064. [2022-11-19 07:08:28,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10064 states, 6402 states have (on average 1.3495782567947516) internal successors, (8640), 6560 states have internal predecessors, (8640), 3144 states have call successors, (3144), 518 states have call predecessors, (3144), 517 states have return successors, (3288), 3091 states have call predecessors, (3288), 3143 states have call successors, (3288) [2022-11-19 07:08:28,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10064 states to 10064 states and 15072 transitions. [2022-11-19 07:08:28,964 INFO L78 Accepts]: Start accepts. Automaton has 10064 states and 15072 transitions. Word has length 131 [2022-11-19 07:08:28,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:28,967 INFO L495 AbstractCegarLoop]: Abstraction has 10064 states and 15072 transitions. [2022-11-19 07:08:28,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:08:28,967 INFO L276 IsEmpty]: Start isEmpty. Operand 10064 states and 15072 transitions. [2022-11-19 07:08:28,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-19 07:08:28,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:28,979 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-19 07:08:28,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:08:28,980 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:08:28,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:28,989 INFO L85 PathProgramCache]: Analyzing trace with hash -910472169, now seen corresponding path program 1 times [2022-11-19 07:08:28,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:28,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083266207] [2022-11-19 07:08:28,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:28,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:29,634 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-19 07:08:29,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:29,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083266207] [2022-11-19 07:08:29,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083266207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:29,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:08:29,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:08:29,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139424526] [2022-11-19 07:08:29,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:29,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:08:29,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:29,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:08:29,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:08:29,641 INFO L87 Difference]: Start difference. First operand 10064 states and 15072 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:08:31,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:08:40,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:40,022 INFO L93 Difference]: Finished difference Result 20800 states and 31053 transitions. [2022-11-19 07:08:40,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:08:40,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 132 [2022-11-19 07:08:40,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:40,168 INFO L225 Difference]: With dead ends: 20800 [2022-11-19 07:08:40,168 INFO L226 Difference]: Without dead ends: 15128 [2022-11-19 07:08:40,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:08:40,221 INFO L413 NwaCegarLoop]: 4369 mSDtfsCounter, 3913 mSDsluCounter, 12288 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3917 SdHoareTripleChecker+Valid, 16657 SdHoareTripleChecker+Invalid, 1696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:40,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3917 Valid, 16657 Invalid, 1696 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1692 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2022-11-19 07:08:40,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15128 states. [2022-11-19 07:08:41,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15128 to 15089. [2022-11-19 07:08:41,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15089 states, 9605 states have (on average 1.3495054659031753) internal successors, (12962), 9834 states have internal predecessors, (12962), 4708 states have call successors, (4708), 776 states have call predecessors, (4708), 775 states have return successors, (4997), 4635 states have call predecessors, (4997), 4707 states have call successors, (4997) [2022-11-19 07:08:41,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15089 states to 15089 states and 22667 transitions. [2022-11-19 07:08:41,566 INFO L78 Accepts]: Start accepts. Automaton has 15089 states and 22667 transitions. Word has length 132 [2022-11-19 07:08:41,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:41,568 INFO L495 AbstractCegarLoop]: Abstraction has 15089 states and 22667 transitions. [2022-11-19 07:08:41,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:08:41,569 INFO L276 IsEmpty]: Start isEmpty. Operand 15089 states and 22667 transitions. [2022-11-19 07:08:41,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-19 07:08:41,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:41,574 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-19 07:08:41,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:08:41,574 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:08:41,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:41,575 INFO L85 PathProgramCache]: Analyzing trace with hash -2048548369, now seen corresponding path program 1 times [2022-11-19 07:08:41,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:41,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61597749] [2022-11-19 07:08:41,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:41,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:42,095 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-19 07:08:42,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:42,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61597749] [2022-11-19 07:08:42,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61597749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:42,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:08:42,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:08:42,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76368242] [2022-11-19 07:08:42,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:42,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:08:42,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:42,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:08:42,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:08:42,098 INFO L87 Difference]: Start difference. First operand 15089 states and 22667 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:08:44,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:08:46,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:08:53,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:53,669 INFO L93 Difference]: Finished difference Result 45299 states and 68057 transitions. [2022-11-19 07:08:53,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:08:53,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 134 [2022-11-19 07:08:53,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:53,885 INFO L225 Difference]: With dead ends: 45299 [2022-11-19 07:08:53,885 INFO L226 Difference]: Without dead ends: 30227 [2022-11-19 07:08:54,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:08:54,137 INFO L413 NwaCegarLoop]: 4534 mSDtfsCounter, 3918 mSDsluCounter, 12544 mSDsCounter, 0 mSdLazyCounter, 1819 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3922 SdHoareTripleChecker+Valid, 17078 SdHoareTripleChecker+Invalid, 1822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1819 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:54,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3922 Valid, 17078 Invalid, 1822 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1819 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2022-11-19 07:08:54,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30227 states. [2022-11-19 07:08:56,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30227 to 30164. [2022-11-19 07:08:56,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30164 states, 19200 states have (on average 1.3496875) internal successors, (25914), 19682 states have internal predecessors, (25914), 9408 states have call successors, (9408), 1556 states have call predecessors, (9408), 1555 states have return successors, (9987), 9239 states have call predecessors, (9987), 9407 states have call successors, (9987) [2022-11-19 07:08:56,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30164 states to 30164 states and 45309 transitions. [2022-11-19 07:08:56,310 INFO L78 Accepts]: Start accepts. Automaton has 30164 states and 45309 transitions. Word has length 134 [2022-11-19 07:08:56,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:56,311 INFO L495 AbstractCegarLoop]: Abstraction has 30164 states and 45309 transitions. [2022-11-19 07:08:56,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:08:56,312 INFO L276 IsEmpty]: Start isEmpty. Operand 30164 states and 45309 transitions. [2022-11-19 07:08:56,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-19 07:08:56,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:56,317 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-19 07:08:56,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:08:56,318 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:08:56,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:56,318 INFO L85 PathProgramCache]: Analyzing trace with hash -825104989, now seen corresponding path program 1 times [2022-11-19 07:08:56,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:56,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674083347] [2022-11-19 07:08:56,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:56,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:57,047 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-19 07:08:57,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:57,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674083347] [2022-11-19 07:08:57,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674083347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:57,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:08:57,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:08:57,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591550576] [2022-11-19 07:08:57,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:57,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:08:57,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:57,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:08:57,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:08:57,051 INFO L87 Difference]: Start difference. First operand 30164 states and 45309 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:08:59,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:09:06,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:06,881 INFO L93 Difference]: Finished difference Result 51654 states and 77275 transitions. [2022-11-19 07:09:06,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:09:06,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 133 [2022-11-19 07:09:06,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:07,057 INFO L225 Difference]: With dead ends: 51654 [2022-11-19 07:09:07,057 INFO L226 Difference]: Without dead ends: 30255 [2022-11-19 07:09:07,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:09:07,161 INFO L413 NwaCegarLoop]: 4365 mSDtfsCounter, 3911 mSDsluCounter, 12280 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3915 SdHoareTripleChecker+Valid, 16645 SdHoareTripleChecker+Invalid, 1696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:07,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3915 Valid, 16645 Invalid, 1696 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1692 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2022-11-19 07:09:07,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30255 states. [2022-11-19 07:09:08,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30255 to 30180. [2022-11-19 07:09:08,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30180 states, 19216 states have (on average 1.3493963363863448) internal successors, (25930), 19694 states have internal predecessors, (25930), 9404 states have call successors, (9404), 1560 states have call predecessors, (9404), 1559 states have return successors, (9983), 9239 states have call predecessors, (9983), 9403 states have call successors, (9983) [2022-11-19 07:09:09,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30180 states to 30180 states and 45317 transitions. [2022-11-19 07:09:09,059 INFO L78 Accepts]: Start accepts. Automaton has 30180 states and 45317 transitions. Word has length 133 [2022-11-19 07:09:09,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:09,059 INFO L495 AbstractCegarLoop]: Abstraction has 30180 states and 45317 transitions. [2022-11-19 07:09:09,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:09:09,060 INFO L276 IsEmpty]: Start isEmpty. Operand 30180 states and 45317 transitions. [2022-11-19 07:09:09,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-19 07:09:09,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:09,091 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-19 07:09:09,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:09:09,092 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:09:09,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:09,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1408430092, now seen corresponding path program 1 times [2022-11-19 07:09:09,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:09,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234920604] [2022-11-19 07:09:09,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:09,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:09,855 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-19 07:09:09,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:09,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234920604] [2022-11-19 07:09:09,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234920604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:09,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:09,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:09:09,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107216177] [2022-11-19 07:09:09,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:09,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:09:09,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:09,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:09:09,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:09:09,857 INFO L87 Difference]: Start difference. First operand 30180 states and 45317 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:09:11,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:09:20,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:20,616 INFO L93 Difference]: Finished difference Result 51634 states and 77227 transitions. [2022-11-19 07:09:20,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:09:20,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 134 [2022-11-19 07:09:20,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:20,762 INFO L225 Difference]: With dead ends: 51634 [2022-11-19 07:09:20,762 INFO L226 Difference]: Without dead ends: 30215 [2022-11-19 07:09:20,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:09:20,982 INFO L413 NwaCegarLoop]: 4365 mSDtfsCounter, 3909 mSDsluCounter, 12280 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3913 SdHoareTripleChecker+Valid, 16645 SdHoareTripleChecker+Invalid, 1696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:20,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3913 Valid, 16645 Invalid, 1696 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1692 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2022-11-19 07:09:21,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30215 states. [2022-11-19 07:09:22,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30215 to 30152. [2022-11-19 07:09:22,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30152 states, 19196 states have (on average 1.3491352365076057) internal successors, (25898), 19670 states have internal predecessors, (25898), 9396 states have call successors, (9396), 1560 states have call predecessors, (9396), 1559 states have return successors, (9975), 9235 states have call predecessors, (9975), 9395 states have call successors, (9975) [2022-11-19 07:09:22,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30152 states to 30152 states and 45269 transitions. [2022-11-19 07:09:22,622 INFO L78 Accepts]: Start accepts. Automaton has 30152 states and 45269 transitions. Word has length 134 [2022-11-19 07:09:22,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:22,624 INFO L495 AbstractCegarLoop]: Abstraction has 30152 states and 45269 transitions. [2022-11-19 07:09:22,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:09:22,624 INFO L276 IsEmpty]: Start isEmpty. Operand 30152 states and 45269 transitions. [2022-11-19 07:09:22,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-19 07:09:22,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:22,629 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-19 07:09:22,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:09:22,629 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:09:22,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:22,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1615455867, now seen corresponding path program 1 times [2022-11-19 07:09:22,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:22,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790110019] [2022-11-19 07:09:22,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:22,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:23,064 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-19 07:09:23,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:23,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790110019] [2022-11-19 07:09:23,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790110019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:23,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:23,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:09:23,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276009942] [2022-11-19 07:09:23,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:23,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:09:23,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:23,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:09:23,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:09:23,067 INFO L87 Difference]: Start difference. First operand 30152 states and 45269 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:09:25,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:09:27,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:09:28,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:09:33,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:33,287 INFO L93 Difference]: Finished difference Result 47246 states and 70617 transitions. [2022-11-19 07:09:33,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:09:33,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 135 [2022-11-19 07:09:33,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:33,450 INFO L225 Difference]: With dead ends: 47246 [2022-11-19 07:09:33,450 INFO L226 Difference]: Without dead ends: 30248 [2022-11-19 07:09:33,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:09:33,535 INFO L413 NwaCegarLoop]: 3508 mSDtfsCounter, 3912 mSDsluCounter, 7003 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3916 SdHoareTripleChecker+Valid, 10511 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:33,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3916 Valid, 10511 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1269 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2022-11-19 07:09:33,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30248 states. [2022-11-19 07:09:35,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30248 to 30176. [2022-11-19 07:09:35,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30176 states, 19220 states have (on average 1.3486992715920916) internal successors, (25922), 19688 states have internal predecessors, (25922), 9390 states have call successors, (9390), 1566 states have call predecessors, (9390), 1565 states have return successors, (9969), 9235 states have call predecessors, (9969), 9389 states have call successors, (9969) [2022-11-19 07:09:35,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30176 states to 30176 states and 45281 transitions. [2022-11-19 07:09:35,227 INFO L78 Accepts]: Start accepts. Automaton has 30176 states and 45281 transitions. Word has length 135 [2022-11-19 07:09:35,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:35,227 INFO L495 AbstractCegarLoop]: Abstraction has 30176 states and 45281 transitions. [2022-11-19 07:09:35,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:09:35,228 INFO L276 IsEmpty]: Start isEmpty. Operand 30176 states and 45281 transitions. [2022-11-19 07:09:35,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-19 07:09:35,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:35,233 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-19 07:09:35,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:09:35,233 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:09:35,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:35,234 INFO L85 PathProgramCache]: Analyzing trace with hash -9230580, now seen corresponding path program 1 times [2022-11-19 07:09:35,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:35,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333300421] [2022-11-19 07:09:35,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:35,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:35,638 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-19 07:09:35,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:35,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333300421] [2022-11-19 07:09:35,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333300421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:35,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:35,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:09:35,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638735226] [2022-11-19 07:09:35,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:35,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:09:35,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:35,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:09:35,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:09:35,641 INFO L87 Difference]: Start difference. First operand 30176 states and 45281 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:09:37,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:09:43,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:43,887 INFO L93 Difference]: Finished difference Result 47300 states and 70641 transitions. [2022-11-19 07:09:43,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:09:43,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 136 [2022-11-19 07:09:43,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:44,048 INFO L225 Difference]: With dead ends: 47300 [2022-11-19 07:09:44,048 INFO L226 Difference]: Without dead ends: 30272 [2022-11-19 07:09:44,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:09:44,123 INFO L413 NwaCegarLoop]: 3508 mSDtfsCounter, 3910 mSDsluCounter, 7003 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3914 SdHoareTripleChecker+Valid, 10511 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:44,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3914 Valid, 10511 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1269 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-11-19 07:09:44,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30272 states. [2022-11-19 07:09:45,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30272 to 30200. [2022-11-19 07:09:45,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30200 states, 19244 states have (on average 1.3482643940968613) internal successors, (25946), 19706 states have internal predecessors, (25946), 9384 states have call successors, (9384), 1572 states have call predecessors, (9384), 1571 states have return successors, (9963), 9235 states have call predecessors, (9963), 9383 states have call successors, (9963) [2022-11-19 07:09:45,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30200 states to 30200 states and 45293 transitions. [2022-11-19 07:09:46,004 INFO L78 Accepts]: Start accepts. Automaton has 30200 states and 45293 transitions. Word has length 136 [2022-11-19 07:09:46,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:46,005 INFO L495 AbstractCegarLoop]: Abstraction has 30200 states and 45293 transitions. [2022-11-19 07:09:46,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:09:46,005 INFO L276 IsEmpty]: Start isEmpty. Operand 30200 states and 45293 transitions. [2022-11-19 07:09:46,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-19 07:09:46,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:46,010 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-19 07:09:46,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:09:46,011 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:09:46,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:46,011 INFO L85 PathProgramCache]: Analyzing trace with hash -690594622, now seen corresponding path program 1 times [2022-11-19 07:09:46,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:46,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268777635] [2022-11-19 07:09:46,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:46,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:46,433 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-19 07:09:46,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:46,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268777635] [2022-11-19 07:09:46,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268777635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:46,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:46,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:09:46,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941320351] [2022-11-19 07:09:46,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:46,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:09:46,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:46,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:09:46,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:09:46,436 INFO L87 Difference]: Start difference. First operand 30200 states and 45293 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:09:48,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:09:50,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:09:56,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:56,066 INFO L93 Difference]: Finished difference Result 46963 states and 70110 transitions. [2022-11-19 07:09:56,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:09:56,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 137 [2022-11-19 07:09:56,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:56,193 INFO L225 Difference]: With dead ends: 46963 [2022-11-19 07:09:56,193 INFO L226 Difference]: Without dead ends: 29905 [2022-11-19 07:09:56,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:09:56,255 INFO L413 NwaCegarLoop]: 3508 mSDtfsCounter, 3908 mSDsluCounter, 7003 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3912 SdHoareTripleChecker+Valid, 10511 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:56,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3912 Valid, 10511 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1269 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2022-11-19 07:09:56,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29905 states. [2022-11-19 07:09:57,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29905 to 29851. [2022-11-19 07:09:57,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29851 states, 19017 states have (on average 1.3481095861597518) internal successors, (25637), 19469 states have internal predecessors, (25637), 9273 states have call successors, (9273), 1561 states have call predecessors, (9273), 1560 states have return successors, (9852), 9131 states have call predecessors, (9852), 9272 states have call successors, (9852) [2022-11-19 07:09:58,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29851 states to 29851 states and 44762 transitions. [2022-11-19 07:09:58,012 INFO L78 Accepts]: Start accepts. Automaton has 29851 states and 44762 transitions. Word has length 137 [2022-11-19 07:09:58,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:58,012 INFO L495 AbstractCegarLoop]: Abstraction has 29851 states and 44762 transitions. [2022-11-19 07:09:58,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:09:58,012 INFO L276 IsEmpty]: Start isEmpty. Operand 29851 states and 44762 transitions. [2022-11-19 07:09:58,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-19 07:09:58,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:58,017 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-19 07:09:58,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:09:58,017 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:09:58,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:58,018 INFO L85 PathProgramCache]: Analyzing trace with hash -708506033, now seen corresponding path program 1 times [2022-11-19 07:09:58,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:58,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763061763] [2022-11-19 07:09:58,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:58,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:58,705 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-19 07:09:58,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:58,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763061763] [2022-11-19 07:09:58,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763061763] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:09:58,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226003712] [2022-11-19 07:09:58,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:58,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:09:58,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:09:58,711 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:09:58,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:10:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:00,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 3125 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:10:00,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:00,747 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-19 07:10:00,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:10:00,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226003712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:00,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:10:00,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-11-19 07:10:00,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680591763] [2022-11-19 07:10:00,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:00,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:10:00,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:00,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:10:00,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:10:00,750 INFO L87 Difference]: Start difference. First operand 29851 states and 44762 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 07:10:02,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:10:22,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:22,034 INFO L93 Difference]: Finished difference Result 69922 states and 104921 transitions. [2022-11-19 07:10:22,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 07:10:22,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 144 [2022-11-19 07:10:22,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:22,245 INFO L225 Difference]: With dead ends: 69922 [2022-11-19 07:10:22,245 INFO L226 Difference]: Without dead ends: 49767 [2022-11-19 07:10:22,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:10:22,325 INFO L413 NwaCegarLoop]: 6695 mSDtfsCounter, 3917 mSDsluCounter, 30346 mSDsCounter, 0 mSdLazyCounter, 4517 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3921 SdHoareTripleChecker+Valid, 37041 SdHoareTripleChecker+Invalid, 4519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4517 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:22,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3921 Valid, 37041 Invalid, 4519 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 4517 Invalid, 1 Unknown, 0 Unchecked, 18.5s Time] [2022-11-19 07:10:22,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49767 states. [2022-11-19 07:10:25,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49767 to 49636. [2022-11-19 07:10:25,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49636 states, 31632 states have (on average 1.3485078401618613) internal successors, (42656), 32396 states have internal predecessors, (42656), 15406 states have call successors, (15406), 2590 states have call predecessors, (15406), 2597 states have return successors, (16585), 15161 states have call predecessors, (16585), 15405 states have call successors, (16585) [2022-11-19 07:10:25,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49636 states to 49636 states and 74647 transitions. [2022-11-19 07:10:25,418 INFO L78 Accepts]: Start accepts. Automaton has 49636 states and 74647 transitions. Word has length 144 [2022-11-19 07:10:25,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:25,419 INFO L495 AbstractCegarLoop]: Abstraction has 49636 states and 74647 transitions. [2022-11-19 07:10:25,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 07:10:25,419 INFO L276 IsEmpty]: Start isEmpty. Operand 49636 states and 74647 transitions. [2022-11-19 07:10:25,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-19 07:10:25,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:25,424 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-19 07:10:25,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:10:25,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-19 07:10:25,638 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:25,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:25,639 INFO L85 PathProgramCache]: Analyzing trace with hash -177703079, now seen corresponding path program 1 times [2022-11-19 07:10:25,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:25,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575348661] [2022-11-19 07:10:25,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:25,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:26,521 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-19 07:10:26,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:26,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575348661] [2022-11-19 07:10:26,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575348661] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:10:26,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561177912] [2022-11-19 07:10:26,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:26,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:10:26,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:10:26,523 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:10:26,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:10:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:28,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 3127 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:10:28,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:28,453 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-19 07:10:28,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:10:28,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561177912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:28,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:10:28,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-19 07:10:28,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284268290] [2022-11-19 07:10:28,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:28,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:10:28,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:28,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:10:28,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-19 07:10:28,456 INFO L87 Difference]: Start difference. First operand 49636 states and 74647 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 07:10:30,488 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 07:10:35,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:10:36,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:10:52,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:52,113 INFO L93 Difference]: Finished difference Result 109536 states and 164731 transitions. [2022-11-19 07:10:52,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 07:10:52,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 145 [2022-11-19 07:10:52,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:52,426 INFO L225 Difference]: With dead ends: 109536 [2022-11-19 07:10:52,426 INFO L226 Difference]: Without dead ends: 69596 [2022-11-19 07:10:52,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-19 07:10:52,562 INFO L413 NwaCegarLoop]: 6842 mSDtfsCounter, 3917 mSDsluCounter, 30922 mSDsCounter, 0 mSdLazyCounter, 4483 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3921 SdHoareTripleChecker+Valid, 37764 SdHoareTripleChecker+Invalid, 4485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4483 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:52,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3921 Valid, 37764 Invalid, 4485 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 4483 Invalid, 1 Unknown, 0 Unchecked, 20.2s Time] [2022-11-19 07:10:52,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69596 states. [2022-11-19 07:10:56,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69596 to 69441. [2022-11-19 07:10:56,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69441 states, 44259 states have (on average 1.3485844686956325) internal successors, (59687), 45347 states have internal predecessors, (59687), 21539 states have call successors, (21539), 3619 states have call predecessors, (21539), 3642 states have return successors, (23330), 21187 states have call predecessors, (23330), 21538 states have call successors, (23330) [2022-11-19 07:10:57,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69441 states to 69441 states and 104556 transitions. [2022-11-19 07:10:57,015 INFO L78 Accepts]: Start accepts. Automaton has 69441 states and 104556 transitions. Word has length 145 [2022-11-19 07:10:57,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:57,016 INFO L495 AbstractCegarLoop]: Abstraction has 69441 states and 104556 transitions. [2022-11-19 07:10:57,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 07:10:57,016 INFO L276 IsEmpty]: Start isEmpty. Operand 69441 states and 104556 transitions. [2022-11-19 07:10:57,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-19 07:10:57,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:57,022 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-19 07:10:57,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:10:57,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-19 07:10:57,236 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:57,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:57,237 INFO L85 PathProgramCache]: Analyzing trace with hash 363622824, now seen corresponding path program 1 times [2022-11-19 07:10:57,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:57,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506768603] [2022-11-19 07:10:57,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:57,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:57,892 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-19 07:10:57,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:57,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506768603] [2022-11-19 07:10:57,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506768603] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:10:57,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122424234] [2022-11-19 07:10:57,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:57,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:10:57,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:10:57,894 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:10:57,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9855778e-363f-4a61-96c1-833b1dc6d20d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:10:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:59,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 3129 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:10:59,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:11:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-19 07:11:00,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:11:00,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122424234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:00,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:11:00,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-19 07:11:00,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816798629] [2022-11-19 07:11:00,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:00,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:11:00,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:00,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:11:00,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-19 07:11:00,018 INFO L87 Difference]: Start difference. First operand 69441 states and 104556 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 07:11:02,049 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 []