./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--atheros--alx--alx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66814a6-ebba-4e95-a9b4-edc76c3499fb/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66814a6-ebba-4e95-a9b4-edc76c3499fb/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66814a6-ebba-4e95-a9b4-edc76c3499fb/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66814a6-ebba-4e95-a9b4-edc76c3499fb/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--alx--alx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66814a6-ebba-4e95-a9b4-edc76c3499fb/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66814a6-ebba-4e95-a9b4-edc76c3499fb/bin/utaipan-Q6hlc19bkW --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 73f2068ebecd267166c2d24f656fc1164bd021977ce12d612bec590cb9866503 --- 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-4e7fbc6 [2022-11-23 15:19:48,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:19:48,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:19:48,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:19:48,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:19:48,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:19:48,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:19:48,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:19:48,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:19:48,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:19:48,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:19:48,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:19:48,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:19:48,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:19:48,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:19:48,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:19:48,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:19:48,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:19:48,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:19:48,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:19:48,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:19:48,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:19:48,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:19:48,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:19:48,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:19:48,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:19:48,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:19:48,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:19:48,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:19:48,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:19:48,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:19:48,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:19:48,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:19:48,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:19:48,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:19:48,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:19:48,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:19:48,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:19:48,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:19:48,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:19:48,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:19:48,293 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66814a6-ebba-4e95-a9b4-edc76c3499fb/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:19:48,329 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:19:48,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:19:48,329 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:19:48,330 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:19:48,330 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:19:48,336 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:19:48,336 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:19:48,336 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:19:48,336 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:19:48,337 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:19:48,338 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:19:48,338 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:19:48,338 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:19:48,338 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:19:48,339 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:19:48,339 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:19:48,339 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:19:48,339 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:19:48,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:19:48,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:19:48,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:19:48,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:19:48,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:19:48,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:19:48,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:19:48,342 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:19:48,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:19:48,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:19:48,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:19:48,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:19:48,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:19:48,344 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:19:48,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:19:48,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:19:48,345 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:19:48,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:19:48,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:19:48,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:19:48,346 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_a66814a6-ebba-4e95-a9b4-edc76c3499fb/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66814a6-ebba-4e95-a9b4-edc76c3499fb/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73f2068ebecd267166c2d24f656fc1164bd021977ce12d612bec590cb9866503 [2022-11-23 15:19:48,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:19:48,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:19:48,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:19:48,684 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:19:48,685 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:19:48,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66814a6-ebba-4e95-a9b4-edc76c3499fb/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--alx--alx.ko-entry_point.cil.out.i [2022-11-23 15:19:51,846 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:19:52,631 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:19:52,632 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66814a6-ebba-4e95-a9b4-edc76c3499fb/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--alx--alx.ko-entry_point.cil.out.i [2022-11-23 15:19:52,706 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66814a6-ebba-4e95-a9b4-edc76c3499fb/bin/utaipan-Q6hlc19bkW/data/59ccc8661/f9fafeb8e4c74896ba456e89582f5de1/FLAG7e920b76d [2022-11-23 15:19:52,724 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66814a6-ebba-4e95-a9b4-edc76c3499fb/bin/utaipan-Q6hlc19bkW/data/59ccc8661/f9fafeb8e4c74896ba456e89582f5de1 [2022-11-23 15:19:52,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:19:52,729 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:19:52,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:19:52,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:19:52,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:19:52,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:19:52" (1/1) ... [2022-11-23 15:19:52,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cb58b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:52, skipping insertion in model container [2022-11-23 15:19:52,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:19:52" (1/1) ... [2022-11-23 15:19:52,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:19:52,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:19:56,369 WARN L237 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_a66814a6-ebba-4e95-a9b4-edc76c3499fb/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--alx--alx.ko-entry_point.cil.out.i[381779,381792] [2022-11-23 15:19:56,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:19:56,549 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:19:56,963 WARN L237 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_a66814a6-ebba-4e95-a9b4-edc76c3499fb/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--alx--alx.ko-entry_point.cil.out.i[381779,381792] [2022-11-23 15:19:56,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:19:57,348 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:19:57,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:57 WrapperNode [2022-11-23 15:19:57,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:19:57,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:19:57,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:19:57,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:19:57,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:57" (1/1) ... [2022-11-23 15:19:57,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:57" (1/1) ... [2022-11-23 15:19:57,841 INFO L138 Inliner]: procedures = 473, calls = 3863, calls flagged for inlining = 218, calls inlined = 198, statements flattened = 7195 [2022-11-23 15:19:57,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:19:57,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:19:57,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:19:57,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:19:57,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:57" (1/1) ... [2022-11-23 15:19:57,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:57" (1/1) ... [2022-11-23 15:19:57,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:57" (1/1) ... [2022-11-23 15:19:57,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:57" (1/1) ... [2022-11-23 15:19:58,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:57" (1/1) ... [2022-11-23 15:19:58,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:57" (1/1) ... [2022-11-23 15:19:58,190 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:57" (1/1) ... [2022-11-23 15:19:58,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:57" (1/1) ... [2022-11-23 15:19:58,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:19:58,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:19:58,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:19:58,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:19:58,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:57" (1/1) ... [2022-11-23 15:19:58,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:19:58,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66814a6-ebba-4e95-a9b4-edc76c3499fb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:19:58,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66814a6-ebba-4e95-a9b4-edc76c3499fb/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:19:58,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66814a6-ebba-4e95-a9b4-edc76c3499fb/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:19:58,419 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2022-11-23 15:19:58,419 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_wake_queue [2022-11-23 15:19:58,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 15:19:58,419 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 15:19:58,420 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-23 15:19:58,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-23 15:19:58,420 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 15:19:58,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 15:19:58,420 INFO L130 BoogieDeclarations]: Found specification of procedure alx_halt [2022-11-23 15:19:58,420 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_halt [2022-11-23 15:19:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure alx_free_txbuf [2022-11-23 15:19:58,421 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_free_txbuf [2022-11-23 15:19:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2022-11-23 15:19:58,421 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2022-11-23 15:19:58,422 INFO L130 BoogieDeclarations]: Found specification of procedure alx_suspend [2022-11-23 15:19:58,422 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_suspend [2022-11-23 15:19:58,422 INFO L130 BoogieDeclarations]: Found specification of procedure __alx_read_phy_reg [2022-11-23 15:19:58,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __alx_read_phy_reg [2022-11-23 15:19:58,422 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2022-11-23 15:19:58,422 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2022-11-23 15:19:58,422 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-23 15:19:58,423 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-23 15:19:58,423 INFO L130 BoogieDeclarations]: Found specification of procedure alx_wait_reg [2022-11-23 15:19:58,423 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_wait_reg [2022-11-23 15:19:58,424 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-23 15:19:58,424 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-23 15:19:58,425 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 15:19:58,425 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 15:19:58,426 INFO L130 BoogieDeclarations]: Found specification of procedure alx_link_check [2022-11-23 15:19:58,426 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_link_check [2022-11-23 15:19:58,426 INFO L130 BoogieDeclarations]: Found specification of procedure alx_tx_timeout [2022-11-23 15:19:58,426 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_tx_timeout [2022-11-23 15:19:58,426 INFO L130 BoogieDeclarations]: Found specification of procedure alx_irq_enable [2022-11-23 15:19:58,426 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_irq_enable [2022-11-23 15:19:58,427 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 15:19:58,427 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 15:19:58,427 INFO L130 BoogieDeclarations]: Found specification of procedure alx_write_mem16 [2022-11-23 15:19:58,427 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_write_mem16 [2022-11-23 15:19:58,428 INFO L130 BoogieDeclarations]: Found specification of procedure alx_irq_disable [2022-11-23 15:19:58,428 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_irq_disable [2022-11-23 15:19:58,428 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-23 15:19:58,428 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-23 15:19:58,428 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-23 15:19:58,428 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-23 15:19:58,429 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-23 15:19:58,429 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-23 15:19:58,429 INFO L130 BoogieDeclarations]: Found specification of procedure alx_activate [2022-11-23 15:19:58,429 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_activate [2022-11-23 15:19:58,429 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 15:19:58,429 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 15:19:58,429 INFO L130 BoogieDeclarations]: Found specification of procedure alx_intr_msi [2022-11-23 15:19:58,429 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_intr_msi [2022-11-23 15:19:58,430 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-23 15:19:58,430 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-23 15:19:58,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:19:58,430 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-23 15:19:58,430 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-23 15:19:58,430 INFO L130 BoogieDeclarations]: Found specification of procedure alx_post_write [2022-11-23 15:19:58,431 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_post_write [2022-11-23 15:19:58,431 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-23 15:19:58,431 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-23 15:19:58,431 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-23 15:19:58,431 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-23 15:19:58,431 INFO L130 BoogieDeclarations]: Found specification of procedure alx_write_phy_reg [2022-11-23 15:19:58,432 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_write_phy_reg [2022-11-23 15:19:58,432 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_unaligned_access_size [2022-11-23 15:19:58,432 INFO L130 BoogieDeclarations]: Found specification of procedure alx_read_phy_ext [2022-11-23 15:19:58,432 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_read_phy_ext [2022-11-23 15:19:58,432 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 15:19:58,432 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 15:19:58,433 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 15:19:58,433 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 15:19:58,433 INFO L130 BoogieDeclarations]: Found specification of procedure alx_pci_error_detected [2022-11-23 15:19:58,433 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_pci_error_detected [2022-11-23 15:19:58,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 15:19:58,433 INFO L130 BoogieDeclarations]: Found specification of procedure ethadv_to_hw_cfg [2022-11-23 15:19:58,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ethadv_to_hw_cfg [2022-11-23 15:19:58,434 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 15:19:58,434 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 15:19:58,434 INFO L130 BoogieDeclarations]: Found specification of procedure alx_resume [2022-11-23 15:19:58,434 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_resume [2022-11-23 15:19:58,434 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-23 15:19:58,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-23 15:19:58,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 15:19:58,435 INFO L130 BoogieDeclarations]: Found specification of procedure alx_schedule_link_check [2022-11-23 15:19:58,435 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_schedule_link_check [2022-11-23 15:19:58,435 INFO L130 BoogieDeclarations]: Found specification of procedure alx_change_mtu [2022-11-23 15:19:58,435 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_change_mtu [2022-11-23 15:19:58,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:19:58,436 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-23 15:19:58,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-23 15:19:58,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 15:19:58,436 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 15:19:58,436 INFO L130 BoogieDeclarations]: Found specification of procedure __alx_open [2022-11-23 15:19:58,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __alx_open [2022-11-23 15:19:58,437 INFO L130 BoogieDeclarations]: Found specification of procedure alx_write_phy_core [2022-11-23 15:19:58,437 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_write_phy_core [2022-11-23 15:19:58,437 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_2 [2022-11-23 15:19:58,437 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_2 [2022-11-23 15:19:58,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-23 15:19:58,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-23 15:19:58,438 INFO L130 BoogieDeclarations]: Found specification of procedure alx_update_hw_stats [2022-11-23 15:19:58,438 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_update_hw_stats [2022-11-23 15:19:58,438 INFO L130 BoogieDeclarations]: Found specification of procedure alx_write_mem32 [2022-11-23 15:19:58,438 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_write_mem32 [2022-11-23 15:19:58,438 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-23 15:19:58,439 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-23 15:19:58,439 INFO L130 BoogieDeclarations]: Found specification of procedure alx_reset [2022-11-23 15:19:58,439 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_reset [2022-11-23 15:19:58,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-23 15:19:58,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-23 15:19:58,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:19:58,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2022-11-23 15:19:58,440 INFO L130 BoogieDeclarations]: Found specification of procedure alx_read_phy_dbg [2022-11-23 15:19:58,440 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_read_phy_dbg [2022-11-23 15:19:58,440 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-23 15:19:58,440 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-23 15:19:58,440 INFO L130 BoogieDeclarations]: Found specification of procedure __bitrev8 [2022-11-23 15:19:58,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __bitrev8 [2022-11-23 15:19:58,441 INFO L130 BoogieDeclarations]: Found specification of procedure alx_netif_stop [2022-11-23 15:19:58,441 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_netif_stop [2022-11-23 15:19:58,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:19:58,441 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-23 15:19:58,441 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-23 15:19:58,442 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 15:19:58,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 15:19:58,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:19:58,442 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 15:19:58,442 INFO L130 BoogieDeclarations]: Found specification of procedure alx_hw_giga [2022-11-23 15:19:58,442 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_hw_giga [2022-11-23 15:19:58,443 INFO L130 BoogieDeclarations]: Found specification of procedure alx_poll_controller [2022-11-23 15:19:58,443 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_poll_controller [2022-11-23 15:19:58,443 INFO L130 BoogieDeclarations]: Found specification of procedure alx_reset_pcie [2022-11-23 15:19:58,443 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_reset_pcie [2022-11-23 15:19:58,443 INFO L130 BoogieDeclarations]: Found specification of procedure alx_get_stats64 [2022-11-23 15:19:58,443 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_get_stats64 [2022-11-23 15:19:58,444 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_is_locked [2022-11-23 15:19:58,444 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_is_locked [2022-11-23 15:19:58,444 INFO L130 BoogieDeclarations]: Found specification of procedure alx_schedule_reset [2022-11-23 15:19:58,444 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_schedule_reset [2022-11-23 15:19:58,444 INFO L130 BoogieDeclarations]: Found specification of procedure alx_intr_legacy [2022-11-23 15:19:58,444 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_intr_legacy [2022-11-23 15:19:58,445 INFO L130 BoogieDeclarations]: Found specification of procedure alx_refill_rx_ring [2022-11-23 15:19:58,445 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_refill_rx_ring [2022-11-23 15:19:58,445 INFO L130 BoogieDeclarations]: Found specification of procedure alx_write_phy_dbg [2022-11-23 15:19:58,445 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_write_phy_dbg [2022-11-23 15:19:58,445 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-23 15:19:58,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-23 15:19:58,446 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-23 15:19:58,446 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-23 15:19:58,446 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 15:19:58,446 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 15:19:58,446 INFO L130 BoogieDeclarations]: Found specification of procedure alx_set_macaddr [2022-11-23 15:19:58,447 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_set_macaddr [2022-11-23 15:19:58,447 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_selected_regions [2022-11-23 15:19:58,447 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_selected_regions [2022-11-23 15:19:58,447 INFO L130 BoogieDeclarations]: Found specification of procedure alx_speed_to_ethadv [2022-11-23 15:19:58,447 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_speed_to_ethadv [2022-11-23 15:19:58,447 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 15:19:58,448 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 15:19:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure alx_free_rings [2022-11-23 15:19:58,448 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_free_rings [2022-11-23 15:19:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:19:58,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:19:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-23 15:19:58,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-23 15:19:58,449 INFO L130 BoogieDeclarations]: Found specification of procedure pci_select_bars [2022-11-23 15:19:58,449 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_select_bars [2022-11-23 15:19:58,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 15:19:58,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 15:19:58,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 15:19:58,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 15:19:58,450 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2022-11-23 15:19:58,450 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2022-11-23 15:19:58,450 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-23 15:19:58,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-23 15:19:58,450 INFO L130 BoogieDeclarations]: Found specification of procedure alx_set_mac_address [2022-11-23 15:19:58,451 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_set_mac_address [2022-11-23 15:19:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-23 15:19:58,451 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-23 15:19:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-23 15:19:58,451 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-23 15:19:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-23 15:19:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-23 15:19:58,452 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-23 15:19:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-23 15:19:58,452 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-23 15:19:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure alx_hw_with_cr [2022-11-23 15:19:58,452 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_hw_with_cr [2022-11-23 15:19:58,453 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_7 [2022-11-23 15:19:58,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_7 [2022-11-23 15:19:58,453 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 15:19:58,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 15:19:58,453 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2022-11-23 15:19:58,453 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2022-11-23 15:19:58,453 INFO L130 BoogieDeclarations]: Found specification of procedure alx_get_supported_speeds [2022-11-23 15:19:58,454 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_get_supported_speeds [2022-11-23 15:19:58,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 15:19:58,454 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 15:19:58,454 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_2 [2022-11-23 15:19:58,454 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_2 [2022-11-23 15:19:58,454 INFO L130 BoogieDeclarations]: Found specification of procedure alx_read_macaddr [2022-11-23 15:19:58,455 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_read_macaddr [2022-11-23 15:19:58,455 INFO L130 BoogieDeclarations]: Found specification of procedure alx_read_mem32 [2022-11-23 15:19:58,455 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_read_mem32 [2022-11-23 15:19:58,455 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2022-11-23 15:19:58,455 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2022-11-23 15:19:58,455 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 15:19:58,456 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 15:19:58,456 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 15:19:58,456 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 15:19:58,456 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-23 15:19:58,456 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-23 15:19:58,456 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-23 15:19:58,457 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-23 15:19:58,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:19:58,457 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 15:19:58,457 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 15:19:58,457 INFO L130 BoogieDeclarations]: Found specification of procedure alx_reinit_rings [2022-11-23 15:19:58,457 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_reinit_rings [2022-11-23 15:19:58,458 INFO L130 BoogieDeclarations]: Found specification of procedure alx_read_phy_reg [2022-11-23 15:19:58,458 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_read_phy_reg [2022-11-23 15:19:58,458 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-23 15:19:58,458 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-23 15:19:58,458 INFO L130 BoogieDeclarations]: Found specification of procedure alx_free_buffers [2022-11-23 15:19:58,458 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_free_buffers [2022-11-23 15:19:58,459 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-23 15:19:58,459 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-23 15:19:58,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:19:58,459 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-23 15:19:58,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-23 15:19:58,459 INFO L130 BoogieDeclarations]: Found specification of procedure alx_pci_error_slot_reset [2022-11-23 15:19:58,460 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_pci_error_slot_reset [2022-11-23 15:19:58,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:19:58,460 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_3 [2022-11-23 15:19:58,460 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_3 [2022-11-23 15:19:58,460 INFO L130 BoogieDeclarations]: Found specification of procedure alx_wait_mdio_idle [2022-11-23 15:19:58,460 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_wait_mdio_idle [2022-11-23 15:19:58,461 INFO L130 BoogieDeclarations]: Found specification of procedure alx_intr_handle [2022-11-23 15:19:58,461 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_intr_handle [2022-11-23 15:19:58,461 INFO L130 BoogieDeclarations]: Found specification of procedure alx_ioctl [2022-11-23 15:19:58,461 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_ioctl [2022-11-23 15:19:58,461 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-23 15:19:58,461 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-23 15:19:58,462 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-23 15:19:58,462 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-23 15:19:58,462 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-23 15:19:58,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-23 15:19:58,462 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 15:19:58,462 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 15:19:58,462 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-23 15:19:58,463 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-23 15:19:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure alx_fix_features [2022-11-23 15:19:58,463 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_fix_features [2022-11-23 15:19:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 15:19:58,463 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 15:19:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure alx_is_rev_a [2022-11-23 15:19:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_is_rev_a [2022-11-23 15:19:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 15:19:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 15:19:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure alx_read_phy_core [2022-11-23 15:19:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_read_phy_core [2022-11-23 15:19:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 15:19:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 15:19:58,465 INFO L130 BoogieDeclarations]: Found specification of procedure alx_write_phy_ext [2022-11-23 15:19:58,465 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_write_phy_ext [2022-11-23 15:19:58,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:19:58,465 INFO L130 BoogieDeclarations]: Found specification of procedure __bitrev16 [2022-11-23 15:19:58,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __bitrev16 [2022-11-23 15:19:58,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 15:19:58,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 15:19:58,466 INFO L130 BoogieDeclarations]: Found specification of procedure alx_post_phy_link [2022-11-23 15:19:58,466 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_post_phy_link [2022-11-23 15:19:58,466 INFO L130 BoogieDeclarations]: Found specification of procedure alx_reinit [2022-11-23 15:19:58,466 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_reinit [2022-11-23 15:19:58,466 INFO L130 BoogieDeclarations]: Found specification of procedure alx_tpd_avail [2022-11-23 15:19:58,467 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_tpd_avail [2022-11-23 15:19:58,467 INFO L130 BoogieDeclarations]: Found specification of procedure alx_setup_speed_duplex [2022-11-23 15:19:58,467 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_setup_speed_duplex [2022-11-23 15:19:58,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-23 15:19:58,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-23 15:19:58,467 INFO L130 BoogieDeclarations]: Found specification of procedure __alx_stop [2022-11-23 15:19:58,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __alx_stop [2022-11-23 15:19:58,468 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-23 15:19:58,468 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-23 15:19:58,468 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2022-11-23 15:19:58,468 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2022-11-23 15:19:58,468 INFO L130 BoogieDeclarations]: Found specification of procedure alx_enable_aspm [2022-11-23 15:19:58,468 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_enable_aspm [2022-11-23 15:19:58,469 INFO L130 BoogieDeclarations]: Found specification of procedure alx_set_rx_mode [2022-11-23 15:19:58,469 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_set_rx_mode [2022-11-23 15:19:58,469 INFO L130 BoogieDeclarations]: Found specification of procedure alx_hw_revision [2022-11-23 15:19:58,469 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_hw_revision [2022-11-23 15:19:58,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-23 15:19:58,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-23 15:19:58,470 INFO L130 BoogieDeclarations]: Found specification of procedure __alx_set_rx_mode [2022-11-23 15:19:58,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __alx_set_rx_mode [2022-11-23 15:19:58,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2022-11-23 15:19:58,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2022-11-23 15:19:58,470 INFO L130 BoogieDeclarations]: Found specification of procedure __alx_write_phy_reg [2022-11-23 15:19:58,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __alx_write_phy_reg [2022-11-23 15:19:58,470 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-23 15:19:58,471 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-23 15:19:58,471 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-23 15:19:58,471 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-23 15:19:58,471 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-23 15:19:58,471 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-23 15:19:58,471 INFO L130 BoogieDeclarations]: Found specification of procedure dql_avail [2022-11-23 15:19:58,471 INFO L138 BoogieDeclarations]: Found implementation of procedure dql_avail [2022-11-23 15:19:58,472 INFO L130 BoogieDeclarations]: Found specification of procedure alx_configure [2022-11-23 15:19:58,472 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_configure [2022-11-23 15:19:58,472 INFO L130 BoogieDeclarations]: Found specification of procedure alx_reset_phy [2022-11-23 15:19:58,472 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_reset_phy [2022-11-23 15:19:58,472 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-23 15:19:58,472 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-23 15:19:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2022-11-23 15:19:58,473 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2022-11-23 15:19:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-23 15:19:58,473 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-23 15:19:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:19:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le64 [2022-11-23 15:19:58,473 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le64 [2022-11-23 15:19:58,474 INFO L130 BoogieDeclarations]: Found specification of procedure alx_reset_mac [2022-11-23 15:19:58,474 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_reset_mac [2022-11-23 15:19:59,347 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:19:59,355 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:19:59,548 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 15:20:11,555 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:20:14,068 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:20:14,068 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:20:14,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:20:14 BoogieIcfgContainer [2022-11-23 15:20:14,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:20:14,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:20:14,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:20:14,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:20:14,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:19:52" (1/3) ... [2022-11-23 15:20:14,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cdb9068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:20:14, skipping insertion in model container [2022-11-23 15:20:14,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:57" (2/3) ... [2022-11-23 15:20:14,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cdb9068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:20:14, skipping insertion in model container [2022-11-23 15:20:14,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:20:14" (3/3) ... [2022-11-23 15:20:14,088 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--alx--alx.ko-entry_point.cil.out.i [2022-11-23 15:20:14,109 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:20:14,110 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:20:14,207 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:20:14,213 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;@650f465a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:20:14,214 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:20:14,225 INFO L276 IsEmpty]: Start isEmpty. Operand has 2042 states, 1193 states have (on average 1.297569153394803) internal successors, (1548), 1242 states have internal predecessors, (1548), 697 states have call successors, (697), 152 states have call predecessors, (697), 151 states have return successors, (684), 675 states have call predecessors, (684), 684 states have call successors, (684) [2022-11-23 15:20:14,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-23 15:20:14,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:14,254 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:20:14,255 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:20:14,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:14,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1209442920, now seen corresponding path program 1 times [2022-11-23 15:20:14,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:14,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082745841] [2022-11-23 15:20:14,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:14,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:20:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:20:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-11-23 15:20:15,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:20:15,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082745841] [2022-11-23 15:20:15,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082745841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:20:15,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:20:15,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:20:15,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695239626] [2022-11-23 15:20:15,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:20:15,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:20:15,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:20:15,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:20:15,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:20:15,785 INFO L87 Difference]: Start difference. First operand has 2042 states, 1193 states have (on average 1.297569153394803) internal successors, (1548), 1242 states have internal predecessors, (1548), 697 states have call successors, (697), 152 states have call predecessors, (697), 151 states have return successors, (684), 675 states have call predecessors, (684), 684 states have call successors, (684) 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:20:18,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:20,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:22,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:20:22,325 INFO L93 Difference]: Finished difference Result 5656 states and 8142 transitions. [2022-11-23 15:20:22,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:20:22,328 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2022-11-23 15:20:22,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:20:22,380 INFO L225 Difference]: With dead ends: 5656 [2022-11-23 15:20:22,380 INFO L226 Difference]: Without dead ends: 3594 [2022-11-23 15:20:22,396 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 [2022-11-23 15:20:22,399 INFO L413 NwaCegarLoop]: 3303 mSDtfsCounter, 2289 mSDsluCounter, 2527 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2289 SdHoareTripleChecker+Valid, 5830 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:20:22,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2289 Valid, 5830 Invalid, 643 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 634 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2022-11-23 15:20:22,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2022-11-23 15:20:22,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 3587. [2022-11-23 15:20:22,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3587 states, 2092 states have (on average 1.2753346080305927) internal successors, (2668), 2153 states have internal predecessors, (2668), 1216 states have call successors, (1216), 279 states have call predecessors, (1216), 278 states have return successors, (1215), 1197 states have call predecessors, (1215), 1215 states have call successors, (1215) [2022-11-23 15:20:22,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3587 states to 3587 states and 5099 transitions. [2022-11-23 15:20:22,812 INFO L78 Accepts]: Start accepts. Automaton has 3587 states and 5099 transitions. Word has length 126 [2022-11-23 15:20:22,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:20:22,813 INFO L495 AbstractCegarLoop]: Abstraction has 3587 states and 5099 transitions. [2022-11-23 15:20:22,813 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:20:22,814 INFO L276 IsEmpty]: Start isEmpty. Operand 3587 states and 5099 transitions. [2022-11-23 15:20:22,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-23 15:20:22,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:22,823 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:20:22,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:20:22,824 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:20:22,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:22,824 INFO L85 PathProgramCache]: Analyzing trace with hash -345848570, now seen corresponding path program 1 times [2022-11-23 15:20:22,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:22,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535611552] [2022-11-23 15:20:22,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:22,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:20:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:20:23,530 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-11-23 15:20:23,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:20:23,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535611552] [2022-11-23 15:20:23,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535611552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:20:23,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:20:23,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:20:23,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681799289] [2022-11-23 15:20:23,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:20:23,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:20:23,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:20:23,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:20:23,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:20:23,534 INFO L87 Difference]: Start difference. First operand 3587 states and 5099 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-23 15:20:26,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:28,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:30,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:20:30,028 INFO L93 Difference]: Finished difference Result 10357 states and 14675 transitions. [2022-11-23 15:20:30,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:20:30,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 183 [2022-11-23 15:20:30,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:20:30,219 INFO L225 Difference]: With dead ends: 10357 [2022-11-23 15:20:30,220 INFO L226 Difference]: Without dead ends: 6789 [2022-11-23 15:20:30,237 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 [2022-11-23 15:20:30,238 INFO L413 NwaCegarLoop]: 3753 mSDtfsCounter, 2473 mSDsluCounter, 2560 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2473 SdHoareTripleChecker+Valid, 6313 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:20:30,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2473 Valid, 6313 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 627 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2022-11-23 15:20:30,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6789 states. [2022-11-23 15:20:30,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6789 to 6782. [2022-11-23 15:20:30,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6782 states, 3960 states have (on average 1.270959595959596) internal successors, (5033), 4069 states have internal predecessors, (5033), 2282 states have call successors, (2282), 540 states have call predecessors, (2282), 539 states have return successors, (2281), 2247 states have call predecessors, (2281), 2281 states have call successors, (2281) [2022-11-23 15:20:30,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6782 states to 6782 states and 9596 transitions. [2022-11-23 15:20:30,645 INFO L78 Accepts]: Start accepts. Automaton has 6782 states and 9596 transitions. Word has length 183 [2022-11-23 15:20:30,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:20:30,646 INFO L495 AbstractCegarLoop]: Abstraction has 6782 states and 9596 transitions. [2022-11-23 15:20:30,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-23 15:20:30,647 INFO L276 IsEmpty]: Start isEmpty. Operand 6782 states and 9596 transitions. [2022-11-23 15:20:30,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-23 15:20:30,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:30,667 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:20:30,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:20:30,667 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:20:30,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:30,669 INFO L85 PathProgramCache]: Analyzing trace with hash 455683864, now seen corresponding path program 1 times [2022-11-23 15:20:30,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:30,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198140382] [2022-11-23 15:20:30,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:30,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:20:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:20:31,355 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2022-11-23 15:20:31,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:20:31,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198140382] [2022-11-23 15:20:31,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198140382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:20:31,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:20:31,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:20:31,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933758945] [2022-11-23 15:20:31,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:20:31,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:20:31,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:20:31,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:20:31,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:20:31,366 INFO L87 Difference]: Start difference. First operand 6782 states and 9596 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-23 15:20:33,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:36,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:37,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:20:37,821 INFO L93 Difference]: Finished difference Result 19361 states and 27293 transitions. [2022-11-23 15:20:37,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:20:37,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 221 [2022-11-23 15:20:37,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:20:37,933 INFO L225 Difference]: With dead ends: 19361 [2022-11-23 15:20:37,933 INFO L226 Difference]: Without dead ends: 12598 [2022-11-23 15:20:37,978 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 [2022-11-23 15:20:37,981 INFO L413 NwaCegarLoop]: 3892 mSDtfsCounter, 2409 mSDsluCounter, 2566 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2409 SdHoareTripleChecker+Valid, 6458 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:20:37,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2409 Valid, 6458 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 625 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2022-11-23 15:20:37,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12598 states. [2022-11-23 15:20:38,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12598 to 12594. [2022-11-23 15:20:38,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12594 states, 7342 states have (on average 1.269000272405339) internal successors, (9317), 7537 states have internal predecessors, (9317), 4201 states have call successors, (4201), 1051 states have call predecessors, (4201), 1050 states have return successors, (4200), 4140 states have call predecessors, (4200), 4200 states have call successors, (4200) [2022-11-23 15:20:39,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12594 states to 12594 states and 17718 transitions. [2022-11-23 15:20:39,053 INFO L78 Accepts]: Start accepts. Automaton has 12594 states and 17718 transitions. Word has length 221 [2022-11-23 15:20:39,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:20:39,055 INFO L495 AbstractCegarLoop]: Abstraction has 12594 states and 17718 transitions. [2022-11-23 15:20:39,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-23 15:20:39,056 INFO L276 IsEmpty]: Start isEmpty. Operand 12594 states and 17718 transitions. [2022-11-23 15:20:39,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-11-23 15:20:39,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:39,079 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:20:39,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:20:39,080 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:20:39,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:39,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1358756499, now seen corresponding path program 1 times [2022-11-23 15:20:39,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:39,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440886265] [2022-11-23 15:20:39,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:39,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:20:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:20:39,924 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2022-11-23 15:20:39,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:20:39,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440886265] [2022-11-23 15:20:39,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440886265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:20:39,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:20:39,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:20:39,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107056388] [2022-11-23 15:20:39,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:20:39,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:20:39,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:20:39,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:20:39,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:20:39,929 INFO L87 Difference]: Start difference. First operand 12594 states and 17718 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-23 15:20:42,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:44,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:46,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:47,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:20:47,461 INFO L93 Difference]: Finished difference Result 31462 states and 44284 transitions. [2022-11-23 15:20:47,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:20:47,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 265 [2022-11-23 15:20:47,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:20:47,594 INFO L225 Difference]: With dead ends: 31462 [2022-11-23 15:20:47,594 INFO L226 Difference]: Without dead ends: 18891 [2022-11-23 15:20:47,671 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 [2022-11-23 15:20:47,672 INFO L413 NwaCegarLoop]: 4295 mSDtfsCounter, 2555 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2555 SdHoareTripleChecker+Valid, 6872 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:20:47,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2555 Valid, 6872 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 732 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2022-11-23 15:20:47,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18891 states. [2022-11-23 15:20:48,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18891 to 18885. [2022-11-23 15:20:48,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18885 states, 11017 states have (on average 1.2678587637287828) internal successors, (13968), 11313 states have internal predecessors, (13968), 6293 states have call successors, (6293), 1575 states have call predecessors, (6293), 1574 states have return successors, (6292), 6201 states have call predecessors, (6292), 6292 states have call successors, (6292) [2022-11-23 15:20:48,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18885 states to 18885 states and 26553 transitions. [2022-11-23 15:20:48,947 INFO L78 Accepts]: Start accepts. Automaton has 18885 states and 26553 transitions. Word has length 265 [2022-11-23 15:20:48,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:20:48,949 INFO L495 AbstractCegarLoop]: Abstraction has 18885 states and 26553 transitions. [2022-11-23 15:20:48,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-23 15:20:48,950 INFO L276 IsEmpty]: Start isEmpty. Operand 18885 states and 26553 transitions. [2022-11-23 15:20:48,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-11-23 15:20:48,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:48,974 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:20:48,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:20:48,975 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:20:48,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:48,976 INFO L85 PathProgramCache]: Analyzing trace with hash -638403203, now seen corresponding path program 1 times [2022-11-23 15:20:48,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:48,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117815699] [2022-11-23 15:20:48,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:48,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:20:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:20:49,920 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-11-23 15:20:49,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:20:49,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117815699] [2022-11-23 15:20:49,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117815699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:20:49,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:20:49,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:20:49,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253588381] [2022-11-23 15:20:49,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:20:49,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:20:49,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:20:49,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:20:49,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:20:49,923 INFO L87 Difference]: Start difference. First operand 18885 states and 26553 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-23 15:20:52,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:56,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:20:56,688 INFO L93 Difference]: Finished difference Result 55346 states and 77853 transitions. [2022-11-23 15:20:56,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:20:56,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 271 [2022-11-23 15:20:56,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:20:56,917 INFO L225 Difference]: With dead ends: 55346 [2022-11-23 15:20:56,917 INFO L226 Difference]: Without dead ends: 36484 [2022-11-23 15:20:57,012 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 [2022-11-23 15:20:57,013 INFO L413 NwaCegarLoop]: 3305 mSDtfsCounter, 2502 mSDsluCounter, 2584 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2502 SdHoareTripleChecker+Valid, 5889 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:20:57,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2502 Valid, 5889 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 550 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-11-23 15:20:57,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36484 states. [2022-11-23 15:20:59,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36484 to 36481. [2022-11-23 15:20:59,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36481 states, 21298 states have (on average 1.267771621748521) internal successors, (27001), 21844 states have internal predecessors, (27001), 12159 states have call successors, (12159), 3024 states have call predecessors, (12159), 3023 states have return successors, (12158), 12007 states have call predecessors, (12158), 12158 states have call successors, (12158) [2022-11-23 15:20:59,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36481 states to 36481 states and 51318 transitions. [2022-11-23 15:20:59,539 INFO L78 Accepts]: Start accepts. Automaton has 36481 states and 51318 transitions. Word has length 271 [2022-11-23 15:20:59,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:20:59,541 INFO L495 AbstractCegarLoop]: Abstraction has 36481 states and 51318 transitions. [2022-11-23 15:20:59,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-23 15:20:59,541 INFO L276 IsEmpty]: Start isEmpty. Operand 36481 states and 51318 transitions. [2022-11-23 15:20:59,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-11-23 15:20:59,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:59,783 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:20:59,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:20:59,783 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:20:59,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:59,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1741266580, now seen corresponding path program 1 times [2022-11-23 15:20:59,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:59,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052328092] [2022-11-23 15:20:59,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:59,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:21:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:00,611 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2022-11-23 15:21:00,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:21:00,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052328092] [2022-11-23 15:21:00,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052328092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:21:00,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:21:00,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:21:00,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284781824] [2022-11-23 15:21:00,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:21:00,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:21:00,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:21:00,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:21:00,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:21:00,615 INFO L87 Difference]: Start difference. First operand 36481 states and 51318 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-23 15:21:03,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:04,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:07,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:21:07,573 INFO L93 Difference]: Finished difference Result 61917 states and 87711 transitions. [2022-11-23 15:21:07,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:21:07,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 276 [2022-11-23 15:21:07,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:21:07,916 INFO L225 Difference]: With dead ends: 61917 [2022-11-23 15:21:07,916 INFO L226 Difference]: Without dead ends: 61914 [2022-11-23 15:21:07,946 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 [2022-11-23 15:21:07,948 INFO L413 NwaCegarLoop]: 3489 mSDtfsCounter, 2517 mSDsluCounter, 2213 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2517 SdHoareTripleChecker+Valid, 5702 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:21:07,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2517 Valid, 5702 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 547 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-11-23 15:21:08,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61914 states. [2022-11-23 15:21:11,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61914 to 61370. [2022-11-23 15:21:11,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61370 states, 36105 states have (on average 1.283090984628168) internal successors, (46326), 37331 states have internal predecessors, (46326), 19943 states have call successors, (19943), 5430 states have call predecessors, (19943), 5321 states have return successors, (20582), 19325 states have call predecessors, (20582), 19942 states have call successors, (20582) [2022-11-23 15:21:12,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61370 states to 61370 states and 86851 transitions. [2022-11-23 15:21:12,493 INFO L78 Accepts]: Start accepts. Automaton has 61370 states and 86851 transitions. Word has length 276 [2022-11-23 15:21:12,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:21:12,494 INFO L495 AbstractCegarLoop]: Abstraction has 61370 states and 86851 transitions. [2022-11-23 15:21:12,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-23 15:21:12,495 INFO L276 IsEmpty]: Start isEmpty. Operand 61370 states and 86851 transitions. [2022-11-23 15:21:12,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-11-23 15:21:12,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:12,628 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:21:12,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:21:12,628 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:21:12,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:21:12,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1629601106, now seen corresponding path program 1 times [2022-11-23 15:21:12,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:21:12,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347397928] [2022-11-23 15:21:12,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:12,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:21:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:13,548 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-11-23 15:21:13,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:21:13,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347397928] [2022-11-23 15:21:13,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347397928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:21:13,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:21:13,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:21:13,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601005347] [2022-11-23 15:21:13,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:21:13,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:21:13,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:21:13,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:21:13,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:21:13,554 INFO L87 Difference]: Start difference. First operand 61370 states and 86851 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-23 15:21:16,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:18,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:20,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:23,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:21:23,182 INFO L93 Difference]: Finished difference Result 122715 states and 173667 transitions. [2022-11-23 15:21:23,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:21:23,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 299 [2022-11-23 15:21:23,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:21:23,654 INFO L225 Difference]: With dead ends: 122715 [2022-11-23 15:21:23,655 INFO L226 Difference]: Without dead ends: 61350 [2022-11-23 15:21:23,820 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 [2022-11-23 15:21:23,821 INFO L413 NwaCegarLoop]: 2614 mSDtfsCounter, 0 mSDsluCounter, 2611 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5225 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:21:23,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5225 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 533 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2022-11-23 15:21:23,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61350 states. [2022-11-23 15:21:26,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61350 to 61326. [2022-11-23 15:21:26,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61326 states, 36061 states have (on average 1.282770860486398) internal successors, (46258), 37299 states have internal predecessors, (46258), 19943 states have call successors, (19943), 5430 states have call predecessors, (19943), 5321 states have return successors, (20582), 19313 states have call predecessors, (20582), 19942 states have call successors, (20582) [2022-11-23 15:21:27,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61326 states to 61326 states and 86783 transitions. [2022-11-23 15:21:27,201 INFO L78 Accepts]: Start accepts. Automaton has 61326 states and 86783 transitions. Word has length 299 [2022-11-23 15:21:27,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:21:27,202 INFO L495 AbstractCegarLoop]: Abstraction has 61326 states and 86783 transitions. [2022-11-23 15:21:27,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-23 15:21:27,202 INFO L276 IsEmpty]: Start isEmpty. Operand 61326 states and 86783 transitions. [2022-11-23 15:21:27,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-11-23 15:21:27,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:27,349 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:21:27,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:21:27,350 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:21:27,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:21:27,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1231195126, now seen corresponding path program 1 times [2022-11-23 15:21:27,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:21:27,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884898178] [2022-11-23 15:21:27,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:27,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:21:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:28,779 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2022-11-23 15:21:28,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:21:28,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884898178] [2022-11-23 15:21:28,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884898178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:21:28,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:21:28,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:21:28,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171593386] [2022-11-23 15:21:28,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:21:28,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:21:28,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:21:28,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:21:28,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:21:28,783 INFO L87 Difference]: Start difference. First operand 61326 states and 86783 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-23 15:21:32,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:35,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:38,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:21:38,812 INFO L93 Difference]: Finished difference Result 142512 states and 201666 transitions. [2022-11-23 15:21:38,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:21:38,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 353 [2022-11-23 15:21:38,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:21:39,371 INFO L225 Difference]: With dead ends: 142512 [2022-11-23 15:21:39,371 INFO L226 Difference]: Without dead ends: 81215 [2022-11-23 15:21:39,548 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 [2022-11-23 15:21:39,548 INFO L413 NwaCegarLoop]: 4237 mSDtfsCounter, 2741 mSDsluCounter, 2575 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2741 SdHoareTripleChecker+Valid, 6812 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:21:39,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2741 Valid, 6812 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 705 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2022-11-23 15:21:39,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81215 states. [2022-11-23 15:21:42,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81215 to 81176. [2022-11-23 15:21:43,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81176 states, 47825 states have (on average 1.28299006795609) internal successors, (61359), 49439 states have internal predecessors, (61359), 26295 states have call successors, (26295), 7200 states have call predecessors, (26295), 7055 states have return successors, (27134), 25459 states have call predecessors, (27134), 26294 states have call successors, (27134) [2022-11-23 15:21:43,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81176 states to 81176 states and 114788 transitions. [2022-11-23 15:21:43,405 INFO L78 Accepts]: Start accepts. Automaton has 81176 states and 114788 transitions. Word has length 353 [2022-11-23 15:21:43,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:21:43,406 INFO L495 AbstractCegarLoop]: Abstraction has 81176 states and 114788 transitions. [2022-11-23 15:21:43,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-23 15:21:43,406 INFO L276 IsEmpty]: Start isEmpty. Operand 81176 states and 114788 transitions. [2022-11-23 15:21:43,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-23 15:21:43,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:43,621 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:21:43,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:21:43,622 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:21:43,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:21:43,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1398416117, now seen corresponding path program 1 times [2022-11-23 15:21:43,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:21:43,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947957760] [2022-11-23 15:21:43,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:43,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:21:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:46,092 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2022-11-23 15:21:46,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:21:46,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947957760] [2022-11-23 15:21:46,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947957760] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:21:46,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919666590] [2022-11-23 15:21:46,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:46,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:21:46,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66814a6-ebba-4e95-a9b4-edc76c3499fb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:21:46,099 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66814a6-ebba-4e95-a9b4-edc76c3499fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:21:46,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66814a6-ebba-4e95-a9b4-edc76c3499fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:21:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:48,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 8775 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:21:48,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:21:49,783 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 628 trivial. 0 not checked. [2022-11-23 15:21:49,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:21:49,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919666590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:21:49,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:21:49,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-23 15:21:49,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677412912] [2022-11-23 15:21:49,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:21:49,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:21:49,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:21:49,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:21:49,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:21:49,787 INFO L87 Difference]: Start difference. First operand 81176 states and 114788 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2022-11-23 15:21:52,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:54,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:59,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:21:59,549 INFO L93 Difference]: Finished difference Result 128629 states and 182410 transitions. [2022-11-23 15:21:59,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:21:59,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 364 [2022-11-23 15:21:59,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:22:00,321 INFO L225 Difference]: With dead ends: 128629 [2022-11-23 15:22:00,321 INFO L226 Difference]: Without dead ends: 128626 [2022-11-23 15:22:00,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:22:00,368 INFO L413 NwaCegarLoop]: 3576 mSDtfsCounter, 2399 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2399 SdHoareTripleChecker+Valid, 5788 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:22:00,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2399 Valid, 5788 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 547 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2022-11-23 15:22:00,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128626 states. [2022-11-23 15:22:06,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128626 to 127886. [2022-11-23 15:22:06,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127886 states, 75569 states have (on average 1.29006603236777) internal successors, (97489), 78464 states have internal predecessors, (97489), 40869 states have call successors, (40869), 11802 states have call predecessors, (40869), 11447 states have return successors, (42904), 39132 states have call predecessors, (42904), 40868 states have call successors, (42904) [2022-11-23 15:22:07,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127886 states to 127886 states and 181262 transitions. [2022-11-23 15:22:07,329 INFO L78 Accepts]: Start accepts. Automaton has 127886 states and 181262 transitions. Word has length 364 [2022-11-23 15:22:07,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:22:07,330 INFO L495 AbstractCegarLoop]: Abstraction has 127886 states and 181262 transitions. [2022-11-23 15:22:07,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2022-11-23 15:22:07,330 INFO L276 IsEmpty]: Start isEmpty. Operand 127886 states and 181262 transitions. [2022-11-23 15:22:07,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-11-23 15:22:07,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:22:07,592 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:22:07,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66814a6-ebba-4e95-a9b4-edc76c3499fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 15:22:07,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66814a6-ebba-4e95-a9b4-edc76c3499fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 15:22:07,793 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:22:07,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:22:07,794 INFO L85 PathProgramCache]: Analyzing trace with hash 2011986716, now seen corresponding path program 1 times [2022-11-23 15:22:07,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:22:07,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978173643] [2022-11-23 15:22:07,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:22:07,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:22:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:22:09,512 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2022-11-23 15:22:09,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:22:09,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978173643] [2022-11-23 15:22:09,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978173643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:22:09,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:22:09,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:22:09,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870567086] [2022-11-23 15:22:09,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:22:09,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:22:09,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:22:09,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:22:09,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:09,515 INFO L87 Difference]: Start difference. First operand 127886 states and 181262 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-23 15:22:12,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:22:14,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []