./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5b7a76-df92-4534-9675-f04065a5ac36/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5b7a76-df92-4534-9675-f04065a5ac36/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_4d5b7a76-df92-4534-9675-f04065a5ac36/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5b7a76-df92-4534-9675-f04065a5ac36/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5b7a76-df92-4534-9675-f04065a5ac36/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_4d5b7a76-df92-4534-9675-f04065a5ac36/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 e3ed5a6aa0282e2dbd5967163bb1c33dc8964226641967602a6cd0884f5c00f9 --- 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 13:40:16,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:40:16,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:40:16,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:40:16,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:40:16,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:40:16,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:40:16,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:40:16,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:40:16,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:40:16,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:40:16,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:40:16,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:40:16,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:40:16,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:40:16,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:40:16,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:40:16,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:40:16,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:40:16,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:40:16,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:40:16,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:40:16,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:40:16,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:40:16,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:40:16,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:40:16,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:40:16,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:40:16,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:40:16,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:40:16,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:40:16,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:40:16,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:40:16,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:40:16,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:40:16,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:40:16,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:40:16,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:40:16,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:40:16,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:40:16,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:40:16,115 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5b7a76-df92-4534-9675-f04065a5ac36/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 13:40:16,167 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:40:16,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:40:16,168 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:40:16,168 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:40:16,169 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:40:16,169 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:40:16,169 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:40:16,169 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:40:16,170 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:40:16,170 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:40:16,171 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:40:16,171 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:40:16,171 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:40:16,171 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:40:16,172 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:40:16,172 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:40:16,172 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:40:16,172 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:40:16,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:40:16,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:40:16,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:40:16,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:40:16,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:40:16,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:40:16,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:40:16,174 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:40:16,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:40:16,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:40:16,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:40:16,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:40:16,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:40:16,176 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:40:16,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:40:16,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:40:16,177 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:40:16,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:40:16,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:40:16,177 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:40:16,178 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_4d5b7a76-df92-4534-9675-f04065a5ac36/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5b7a76-df92-4534-9675-f04065a5ac36/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3ed5a6aa0282e2dbd5967163bb1c33dc8964226641967602a6cd0884f5c00f9 [2022-11-23 13:40:16,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:40:16,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:40:16,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:40:16,501 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:40:16,501 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:40:16,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5b7a76-df92-4534-9675-f04065a5ac36/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i [2022-11-23 13:40:19,688 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:40:20,461 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:40:20,461 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5b7a76-df92-4534-9675-f04065a5ac36/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i [2022-11-23 13:40:20,514 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5b7a76-df92-4534-9675-f04065a5ac36/bin/utaipan-Q6hlc19bkW/data/383e06e81/145ee72e187c4f709becfbfbe9f1ed4b/FLAGcb580ece7 [2022-11-23 13:40:20,532 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5b7a76-df92-4534-9675-f04065a5ac36/bin/utaipan-Q6hlc19bkW/data/383e06e81/145ee72e187c4f709becfbfbe9f1ed4b [2022-11-23 13:40:20,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:40:20,536 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:40:20,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:40:20,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:40:20,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:40:20,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:40:20" (1/1) ... [2022-11-23 13:40:20,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@192a539d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:20, skipping insertion in model container [2022-11-23 13:40:20,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:40:20" (1/1) ... [2022-11-23 13:40:20,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:40:20,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:40:24,495 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_4d5b7a76-df92-4534-9675-f04065a5ac36/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416147,416160] [2022-11-23 13:40:24,499 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_4d5b7a76-df92-4534-9675-f04065a5ac36/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416294,416307] [2022-11-23 13:40:24,504 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_4d5b7a76-df92-4534-9675-f04065a5ac36/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416433,416446] [2022-11-23 13:40:24,505 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_4d5b7a76-df92-4534-9675-f04065a5ac36/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416591,416604] [2022-11-23 13:40:24,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:40:24,699 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:40:25,201 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_4d5b7a76-df92-4534-9675-f04065a5ac36/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416147,416160] [2022-11-23 13:40:25,202 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_4d5b7a76-df92-4534-9675-f04065a5ac36/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416294,416307] [2022-11-23 13:40:25,203 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_4d5b7a76-df92-4534-9675-f04065a5ac36/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416433,416446] [2022-11-23 13:40:25,203 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_4d5b7a76-df92-4534-9675-f04065a5ac36/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416591,416604] [2022-11-23 13:40:25,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:40:25,538 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:40:25,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:25 WrapperNode [2022-11-23 13:40:25,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:40:25,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:40:25,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:40:25,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:40:25,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:25" (1/1) ... [2022-11-23 13:40:25,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:25" (1/1) ... [2022-11-23 13:40:25,920 INFO L138 Inliner]: procedures = 543, calls = 4106, calls flagged for inlining = 313, calls inlined = 291, statements flattened = 8466 [2022-11-23 13:40:25,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:40:25,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:40:25,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:40:25,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:40:25,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:25" (1/1) ... [2022-11-23 13:40:25,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:25" (1/1) ... [2022-11-23 13:40:26,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:25" (1/1) ... [2022-11-23 13:40:26,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:25" (1/1) ... [2022-11-23 13:40:26,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:25" (1/1) ... [2022-11-23 13:40:26,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:25" (1/1) ... [2022-11-23 13:40:26,318 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:25" (1/1) ... [2022-11-23 13:40:26,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:25" (1/1) ... [2022-11-23 13:40:26,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:40:26,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:40:26,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:40:26,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:40:26,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:25" (1/1) ... [2022-11-23 13:40:26,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:40:26,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5b7a76-df92-4534-9675-f04065a5ac36/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:40:26,452 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5b7a76-df92-4534-9675-f04065a5ac36/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:40:26,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5b7a76-df92-4534-9675-f04065a5ac36/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:40:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2022-11-23 13:40:26,500 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_wake_queue [2022-11-23 13:40:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 13:40:26,500 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 13:40:26,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_6 [2022-11-23 13:40:26,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_6 [2022-11-23 13:40:26,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 13:40:26,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 13:40:26,501 INFO L130 BoogieDeclarations]: Found specification of procedure alx_halt [2022-11-23 13:40:26,501 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_halt [2022-11-23 13:40:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure alx_free_txbuf [2022-11-23 13:40:26,502 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_free_txbuf [2022-11-23 13:40:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2022-11-23 13:40:26,502 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2022-11-23 13:40:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure alx_suspend [2022-11-23 13:40:26,502 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_suspend [2022-11-23 13:40:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure __alx_read_phy_reg [2022-11-23 13:40:26,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __alx_read_phy_reg [2022-11-23 13:40:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-23 13:40:26,504 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-23 13:40:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure alx_wait_reg [2022-11-23 13:40:26,505 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_wait_reg [2022-11-23 13:40:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-23 13:40:26,505 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-23 13:40:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 13:40:26,506 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 13:40:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure alx_pci_error_resume [2022-11-23 13:40:26,506 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_pci_error_resume [2022-11-23 13:40:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure alx_tx_timeout [2022-11-23 13:40:26,507 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_tx_timeout [2022-11-23 13:40:26,507 INFO L130 BoogieDeclarations]: Found specification of procedure alx_irq_enable [2022-11-23 13:40:26,507 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_irq_enable [2022-11-23 13:40:26,507 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 13:40:26,508 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 13:40:26,508 INFO L130 BoogieDeclarations]: Found specification of procedure alx_write_mem16 [2022-11-23 13:40:26,508 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_write_mem16 [2022-11-23 13:40:26,508 INFO L130 BoogieDeclarations]: Found specification of procedure alx_irq_disable [2022-11-23 13:40:26,508 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_irq_disable [2022-11-23 13:40:26,509 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-23 13:40:26,509 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-23 13:40:26,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 13:40:26,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 13:40:26,509 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-23 13:40:26,510 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-23 13:40:26,510 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-23 13:40:26,510 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-23 13:40:26,511 INFO L130 BoogieDeclarations]: Found specification of procedure alx_activate [2022-11-23 13:40:26,511 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_activate [2022-11-23 13:40:26,511 INFO L130 BoogieDeclarations]: Found specification of procedure alx_remove [2022-11-23 13:40:26,511 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_remove [2022-11-23 13:40:26,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 13:40:26,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 13:40:26,512 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 13:40:26,512 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 13:40:26,512 INFO L130 BoogieDeclarations]: Found specification of procedure alx_intr_msi [2022-11-23 13:40:26,512 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_intr_msi [2022-11-23 13:40:26,512 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-23 13:40:26,513 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-23 13:40:26,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 13:40:26,513 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-23 13:40:26,513 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-23 13:40:26,514 INFO L130 BoogieDeclarations]: Found specification of procedure alx_post_write [2022-11-23 13:40:26,514 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_post_write [2022-11-23 13:40:26,514 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-23 13:40:26,514 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-23 13:40:26,515 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-23 13:40:26,515 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-23 13:40:26,516 INFO L130 BoogieDeclarations]: Found specification of procedure alx_write_phy_reg [2022-11-23 13:40:26,516 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_write_phy_reg [2022-11-23 13:40:26,516 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_unaligned_access_size [2022-11-23 13:40:26,517 INFO L130 BoogieDeclarations]: Found specification of procedure alx_read_phy_ext [2022-11-23 13:40:26,517 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_read_phy_ext [2022-11-23 13:40:26,517 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 13:40:26,518 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 13:40:26,518 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 13:40:26,518 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 13:40:26,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 13:40:26,518 INFO L130 BoogieDeclarations]: Found specification of procedure ethadv_to_hw_cfg [2022-11-23 13:40:26,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ethadv_to_hw_cfg [2022-11-23 13:40:26,519 INFO L130 BoogieDeclarations]: Found specification of procedure alx_stop [2022-11-23 13:40:26,519 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_stop [2022-11-23 13:40:26,519 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 13:40:26,519 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 13:40:26,519 INFO L130 BoogieDeclarations]: Found specification of procedure alx_resume [2022-11-23 13:40:26,520 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_resume [2022-11-23 13:40:26,520 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-23 13:40:26,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-23 13:40:26,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 13:40:26,521 INFO L130 BoogieDeclarations]: Found specification of procedure alx_schedule_link_check [2022-11-23 13:40:26,521 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_schedule_link_check [2022-11-23 13:40:26,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 13:40:26,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 13:40:26,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 13:40:26,522 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-23 13:40:26,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-23 13:40:26,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 13:40:26,523 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 13:40:26,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-23 13:40:26,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-23 13:40:26,523 INFO L130 BoogieDeclarations]: Found specification of procedure __alx_open [2022-11-23 13:40:26,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __alx_open [2022-11-23 13:40:26,524 INFO L130 BoogieDeclarations]: Found specification of procedure alx_write_phy_core [2022-11-23 13:40:26,524 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_write_phy_core [2022-11-23 13:40:26,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-23 13:40:26,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-23 13:40:26,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-23 13:40:26,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-23 13:40:26,530 INFO L130 BoogieDeclarations]: Found specification of procedure alx_update_hw_stats [2022-11-23 13:40:26,530 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_update_hw_stats [2022-11-23 13:40:26,531 INFO L130 BoogieDeclarations]: Found specification of procedure alx_write_mem32 [2022-11-23 13:40:26,531 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_write_mem32 [2022-11-23 13:40:26,532 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-23 13:40:26,532 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-23 13:40:26,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 13:40:26,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-23 13:40:26,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-23 13:40:26,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-23 13:40:26,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-23 13:40:26,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-23 13:40:26,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-23 13:40:26,539 INFO L130 BoogieDeclarations]: Found specification of procedure alx_read_phy_dbg [2022-11-23 13:40:26,539 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_read_phy_dbg [2022-11-23 13:40:26,539 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-23 13:40:26,539 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-23 13:40:26,539 INFO L130 BoogieDeclarations]: Found specification of procedure alx_netif_stop [2022-11-23 13:40:26,540 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_netif_stop [2022-11-23 13:40:26,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:40:26,540 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-23 13:40:26,540 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-23 13:40:26,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 13:40:26,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 13:40:26,541 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 13:40:26,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 13:40:26,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 13:40:26,541 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 13:40:26,541 INFO L130 BoogieDeclarations]: Found specification of procedure alx_hw_giga [2022-11-23 13:40:26,541 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_hw_giga [2022-11-23 13:40:26,542 INFO L130 BoogieDeclarations]: Found specification of procedure alx_poll_controller [2022-11-23 13:40:26,542 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_poll_controller [2022-11-23 13:40:26,542 INFO L130 BoogieDeclarations]: Found specification of procedure alx_reset_pcie [2022-11-23 13:40:26,542 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_reset_pcie [2022-11-23 13:40:26,542 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 13:40:26,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 13:40:26,542 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-23 13:40:26,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-23 13:40:26,543 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_is_locked [2022-11-23 13:40:26,543 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_is_locked [2022-11-23 13:40:26,543 INFO L130 BoogieDeclarations]: Found specification of procedure alx_schedule_reset [2022-11-23 13:40:26,543 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_schedule_reset [2022-11-23 13:40:26,543 INFO L130 BoogieDeclarations]: Found specification of procedure alx_intr_legacy [2022-11-23 13:40:26,544 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_intr_legacy [2022-11-23 13:40:26,544 INFO L130 BoogieDeclarations]: Found specification of procedure alx_refill_rx_ring [2022-11-23 13:40:26,544 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_refill_rx_ring [2022-11-23 13:40:26,544 INFO L130 BoogieDeclarations]: Found specification of procedure alx_write_phy_dbg [2022-11-23 13:40:26,544 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_write_phy_dbg [2022-11-23 13:40:26,544 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-23 13:40:26,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-23 13:40:26,545 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-23 13:40:26,545 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-23 13:40:26,545 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 13:40:26,545 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 13:40:26,545 INFO L130 BoogieDeclarations]: Found specification of procedure alx_set_macaddr [2022-11-23 13:40:26,546 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_set_macaddr [2022-11-23 13:40:26,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-23 13:40:26,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-23 13:40:26,546 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_selected_regions [2022-11-23 13:40:26,546 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_selected_regions [2022-11-23 13:40:26,546 INFO L130 BoogieDeclarations]: Found specification of procedure alx_speed_to_ethadv [2022-11-23 13:40:26,547 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_speed_to_ethadv [2022-11-23 13:40:26,547 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 13:40:26,547 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 13:40:26,547 INFO L130 BoogieDeclarations]: Found specification of procedure alx_free_rings [2022-11-23 13:40:26,547 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_free_rings [2022-11-23 13:40:26,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:40:26,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:40:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-23 13:40:26,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-23 13:40:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure pci_select_bars [2022-11-23 13:40:26,548 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_select_bars [2022-11-23 13:40:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 13:40:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 13:40:26,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 13:40:26,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 13:40:26,549 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2022-11-23 13:40:26,549 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2022-11-23 13:40:26,549 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 13:40:26,549 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 13:40:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-23 13:40:26,550 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-23 13:40:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-23 13:40:26,550 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-23 13:40:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-23 13:40:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure alx_open [2022-11-23 13:40:26,551 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_open [2022-11-23 13:40:26,551 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-23 13:40:26,551 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-23 13:40:26,551 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-23 13:40:26,551 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-23 13:40:26,551 INFO L130 BoogieDeclarations]: Found specification of procedure alx_hw_with_cr [2022-11-23 13:40:26,551 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_hw_with_cr [2022-11-23 13:40:26,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-23 13:40:26,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-23 13:40:26,552 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2022-11-23 13:40:26,552 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2022-11-23 13:40:26,552 INFO L130 BoogieDeclarations]: Found specification of procedure alx_get_supported_speeds [2022-11-23 13:40:26,552 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_get_supported_speeds [2022-11-23 13:40:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 13:40:26,553 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 13:40:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure alx_read_macaddr [2022-11-23 13:40:26,553 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_read_macaddr [2022-11-23 13:40:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure alx_read_mem32 [2022-11-23 13:40:26,553 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_read_mem32 [2022-11-23 13:40:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2022-11-23 13:40:26,554 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2022-11-23 13:40:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 13:40:26,554 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 13:40:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-11-23 13:40:26,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-11-23 13:40:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2022-11-23 13:40:26,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2022-11-23 13:40:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-23 13:40:26,555 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-23 13:40:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-23 13:40:26,555 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-23 13:40:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 13:40:26,556 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 13:40:26,556 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 13:40:26,556 INFO L130 BoogieDeclarations]: Found specification of procedure alx_reinit_rings [2022-11-23 13:40:26,556 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_reinit_rings [2022-11-23 13:40:26,556 INFO L130 BoogieDeclarations]: Found specification of procedure alx_read_phy_reg [2022-11-23 13:40:26,556 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_read_phy_reg [2022-11-23 13:40:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-23 13:40:26,561 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-23 13:40:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure alx_free_buffers [2022-11-23 13:40:26,561 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_free_buffers [2022-11-23 13:40:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-23 13:40:26,562 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-23 13:40:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value_probe [2022-11-23 13:40:26,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value_probe [2022-11-23 13:40:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 13:40:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 13:40:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure alx_wait_mdio_idle [2022-11-23 13:40:26,564 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_wait_mdio_idle [2022-11-23 13:40:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-23 13:40:26,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-23 13:40:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-11-23 13:40:26,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-11-23 13:40:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure alx_intr_handle [2022-11-23 13:40:26,565 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_intr_handle [2022-11-23 13:40:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-23 13:40:26,566 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-23 13:40:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-23 13:40:26,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-23 13:40:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-23 13:40:26,566 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-23 13:40:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 13:40:26,567 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 13:40:26,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-23 13:40:26,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-23 13:40:26,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 13:40:26,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 13:40:26,567 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-23 13:40:26,568 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-23 13:40:26,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_alx_driver_exit_15_2 [2022-11-23 13:40:26,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_alx_driver_exit_15_2 [2022-11-23 13:40:26,568 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-23 13:40:26,568 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-23 13:40:26,568 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 13:40:26,568 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 13:40:26,569 INFO L130 BoogieDeclarations]: Found specification of procedure alx_is_rev_a [2022-11-23 13:40:26,569 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_is_rev_a [2022-11-23 13:40:26,569 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 13:40:26,569 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 13:40:26,569 INFO L130 BoogieDeclarations]: Found specification of procedure alx_read_phy_core [2022-11-23 13:40:26,569 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_read_phy_core [2022-11-23 13:40:26,569 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 13:40:26,570 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 13:40:26,570 INFO L130 BoogieDeclarations]: Found specification of procedure alx_write_phy_ext [2022-11-23 13:40:26,570 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_write_phy_ext [2022-11-23 13:40:26,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 13:40:26,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 13:40:26,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 13:40:26,571 INFO L130 BoogieDeclarations]: Found specification of procedure alx_post_phy_link [2022-11-23 13:40:26,571 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_post_phy_link [2022-11-23 13:40:26,571 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-23 13:40:26,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-23 13:40:26,571 INFO L130 BoogieDeclarations]: Found specification of procedure alx_reinit [2022-11-23 13:40:26,571 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_reinit [2022-11-23 13:40:26,572 INFO L130 BoogieDeclarations]: Found specification of procedure alx_tpd_avail [2022-11-23 13:40:26,572 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_tpd_avail [2022-11-23 13:40:26,572 INFO L130 BoogieDeclarations]: Found specification of procedure alx_setup_speed_duplex [2022-11-23 13:40:26,572 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_setup_speed_duplex [2022-11-23 13:40:26,572 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-23 13:40:26,572 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-23 13:40:26,572 INFO L130 BoogieDeclarations]: Found specification of procedure __alx_stop [2022-11-23 13:40:26,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __alx_stop [2022-11-23 13:40:26,573 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-23 13:40:26,573 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-23 13:40:26,573 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2022-11-23 13:40:26,573 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2022-11-23 13:40:26,573 INFO L130 BoogieDeclarations]: Found specification of procedure alx_enable_aspm [2022-11-23 13:40:26,573 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_enable_aspm [2022-11-23 13:40:26,574 INFO L130 BoogieDeclarations]: Found specification of procedure alx_set_rx_mode [2022-11-23 13:40:26,574 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_set_rx_mode [2022-11-23 13:40:26,574 INFO L130 BoogieDeclarations]: Found specification of procedure alx_hw_revision [2022-11-23 13:40:26,574 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_hw_revision [2022-11-23 13:40:26,574 INFO L130 BoogieDeclarations]: Found specification of procedure __alx_set_rx_mode [2022-11-23 13:40:26,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __alx_set_rx_mode [2022-11-23 13:40:26,575 INFO L130 BoogieDeclarations]: Found specification of procedure __alx_write_phy_reg [2022-11-23 13:40:26,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __alx_write_phy_reg [2022-11-23 13:40:26,575 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-23 13:40:26,575 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-23 13:40:26,575 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-23 13:40:26,575 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-23 13:40:26,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 13:40:26,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 13:40:26,576 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-23 13:40:26,576 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-23 13:40:26,576 INFO L130 BoogieDeclarations]: Found specification of procedure dql_avail [2022-11-23 13:40:26,576 INFO L138 BoogieDeclarations]: Found implementation of procedure dql_avail [2022-11-23 13:40:26,576 INFO L130 BoogieDeclarations]: Found specification of procedure alx_configure [2022-11-23 13:40:26,577 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_configure [2022-11-23 13:40:26,577 INFO L130 BoogieDeclarations]: Found specification of procedure alx_reset_phy [2022-11-23 13:40:26,577 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_reset_phy [2022-11-23 13:40:26,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2022-11-23 13:40:26,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2022-11-23 13:40:26,577 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-23 13:40:26,577 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-23 13:40:26,578 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2022-11-23 13:40:26,578 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2022-11-23 13:40:26,578 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-23 13:40:26,578 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-23 13:40:26,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:40:26,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 13:40:26,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 13:40:26,579 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le64 [2022-11-23 13:40:26,579 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le64 [2022-11-23 13:40:26,579 INFO L130 BoogieDeclarations]: Found specification of procedure alx_reset_mac [2022-11-23 13:40:26,579 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_reset_mac [2022-11-23 13:40:27,902 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:40:27,906 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:40:28,089 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 13:40:38,767 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-23 13:40:39,075 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:40:41,660 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:40:41,660 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-23 13:40:41,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:40:41 BoogieIcfgContainer [2022-11-23 13:40:41,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:40:41,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:40:41,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:40:41,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:40:41,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:40:20" (1/3) ... [2022-11-23 13:40:41,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dac7dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:40:41, skipping insertion in model container [2022-11-23 13:40:41,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:25" (2/3) ... [2022-11-23 13:40:41,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dac7dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:40:41, skipping insertion in model container [2022-11-23 13:40:41,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:40:41" (3/3) ... [2022-11-23 13:40:41,673 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i [2022-11-23 13:40:41,693 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:40:41,693 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 13:40:41,784 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:40:41,790 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;@5c0c46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:40:41,790 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 13:40:41,801 INFO L276 IsEmpty]: Start isEmpty. Operand has 2317 states, 1331 states have (on average 1.270473328324568) internal successors, (1691), 1376 states have internal predecessors, (1691), 828 states have call successors, (828), 160 states have call predecessors, (828), 159 states have return successors, (819), 804 states have call predecessors, (819), 819 states have call successors, (819) [2022-11-23 13:40:41,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-23 13:40:41,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:40:41,822 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:40:41,822 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:40:41,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:40:41,827 INFO L85 PathProgramCache]: Analyzing trace with hash -54691785, now seen corresponding path program 1 times [2022-11-23 13:40:41,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:40:41,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65327981] [2022-11-23 13:40:41,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:40:41,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:40:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:40:43,224 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2022-11-23 13:40:43,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:40:43,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65327981] [2022-11-23 13:40:43,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65327981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:40:43,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:40:43,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:40:43,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300161006] [2022-11-23 13:40:43,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:40:43,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:40:43,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:40:43,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:40:43,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:40:43,279 INFO L87 Difference]: Start difference. First operand has 2317 states, 1331 states have (on average 1.270473328324568) internal successors, (1691), 1376 states have internal predecessors, (1691), 828 states have call successors, (828), 160 states have call predecessors, (828), 159 states have return successors, (819), 804 states have call predecessors, (819), 819 states have call successors, (819) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-23 13:40:45,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:40:48,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:40:51,100 WARN L539 Checker$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 13:40:51,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:40:51,570 INFO L93 Difference]: Finished difference Result 6622 states and 9543 transitions. [2022-11-23 13:40:51,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:40:51,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 180 [2022-11-23 13:40:51,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:40:51,637 INFO L225 Difference]: With dead ends: 6622 [2022-11-23 13:40:51,637 INFO L226 Difference]: Without dead ends: 4325 [2022-11-23 13:40:51,660 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 13:40:51,663 INFO L413 NwaCegarLoop]: 3603 mSDtfsCounter, 2962 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2962 SdHoareTripleChecker+Valid, 6446 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-23 13:40:51,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2962 Valid, 6446 Invalid, 841 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 832 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2022-11-23 13:40:51,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4325 states. [2022-11-23 13:40:52,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4325 to 4322. [2022-11-23 13:40:52,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4322 states, 2486 states have (on average 1.262670957361223) internal successors, (3139), 2563 states have internal predecessors, (3139), 1528 states have call successors, (1528), 307 states have call predecessors, (1528), 306 states have return successors, (1525), 1503 states have call predecessors, (1525), 1525 states have call successors, (1525) [2022-11-23 13:40:52,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 6192 transitions. [2022-11-23 13:40:52,246 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 6192 transitions. Word has length 180 [2022-11-23 13:40:52,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:40:52,251 INFO L495 AbstractCegarLoop]: Abstraction has 4322 states and 6192 transitions. [2022-11-23 13:40:52,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-23 13:40:52,254 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 6192 transitions. [2022-11-23 13:40:52,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-23 13:40:52,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:40:52,277 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:40:52,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:40:52,278 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:40:52,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:40:52,279 INFO L85 PathProgramCache]: Analyzing trace with hash -193446582, now seen corresponding path program 1 times [2022-11-23 13:40:52,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:40:52,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124769534] [2022-11-23 13:40:52,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:40:52,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:40:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:40:53,148 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2022-11-23 13:40:53,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:40:53,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124769534] [2022-11-23 13:40:53,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124769534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:40:53,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:40:53,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:40:53,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634178920] [2022-11-23 13:40:53,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:40:53,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:40:53,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:40:53,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:40:53,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:40:53,154 INFO L87 Difference]: Start difference. First operand 4322 states and 6192 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-23 13:40:55,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:41:00,112 WARN L539 Checker$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 13:41:00,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:41:00,496 INFO L93 Difference]: Finished difference Result 12358 states and 17667 transitions. [2022-11-23 13:41:00,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:41:00,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 199 [2022-11-23 13:41:00,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:41:00,554 INFO L225 Difference]: With dead ends: 12358 [2022-11-23 13:41:00,554 INFO L226 Difference]: Without dead ends: 8069 [2022-11-23 13:41:00,575 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 13:41:00,579 INFO L413 NwaCegarLoop]: 3592 mSDtfsCounter, 2662 mSDsluCounter, 2811 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 19 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2662 SdHoareTripleChecker+Valid, 6403 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-23 13:41:00,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2662 Valid, 6403 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 881 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2022-11-23 13:41:00,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8069 states. [2022-11-23 13:41:01,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8069 to 8058. [2022-11-23 13:41:01,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8058 states, 4651 states have (on average 1.257364007740271) internal successors, (5848), 4794 states have internal predecessors, (5848), 2819 states have call successors, (2819), 588 states have call predecessors, (2819), 586 states have return successors, (2816), 2769 states have call predecessors, (2816), 2816 states have call successors, (2816) [2022-11-23 13:41:01,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8058 states to 8058 states and 11483 transitions. [2022-11-23 13:41:01,123 INFO L78 Accepts]: Start accepts. Automaton has 8058 states and 11483 transitions. Word has length 199 [2022-11-23 13:41:01,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:41:01,123 INFO L495 AbstractCegarLoop]: Abstraction has 8058 states and 11483 transitions. [2022-11-23 13:41:01,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-23 13:41:01,125 INFO L276 IsEmpty]: Start isEmpty. Operand 8058 states and 11483 transitions. [2022-11-23 13:41:01,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-23 13:41:01,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:41:01,135 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 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 13:41:01,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 13:41:01,136 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:41:01,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:41:01,138 INFO L85 PathProgramCache]: Analyzing trace with hash 169121026, now seen corresponding path program 1 times [2022-11-23 13:41:01,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:41:01,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124020850] [2022-11-23 13:41:01,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:41:01,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:41:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:41:01,744 INFO L134 CoverageAnalysis]: Checked inductivity of 995 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 995 trivial. 0 not checked. [2022-11-23 13:41:01,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:41:01,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124020850] [2022-11-23 13:41:01,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124020850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:41:01,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:41:01,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:41:01,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424709060] [2022-11-23 13:41:01,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:41:01,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:41:01,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:41:01,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:41:01,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:41:01,748 INFO L87 Difference]: Start difference. First operand 8058 states and 11483 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-23 13:41:06,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:41:09,115 WARN L539 Checker$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 13:41:09,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:41:09,675 INFO L93 Difference]: Finished difference Result 19861 states and 28284 transitions. [2022-11-23 13:41:09,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:41:09,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 212 [2022-11-23 13:41:09,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:41:09,771 INFO L225 Difference]: With dead ends: 19861 [2022-11-23 13:41:09,771 INFO L226 Difference]: Without dead ends: 11836 [2022-11-23 13:41:09,820 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 13:41:09,821 INFO L413 NwaCegarLoop]: 3573 mSDtfsCounter, 2893 mSDsluCounter, 2829 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2893 SdHoareTripleChecker+Valid, 6402 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-23 13:41:09,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2893 Valid, 6402 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 846 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2022-11-23 13:41:09,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11836 states. [2022-11-23 13:41:10,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11836 to 11822. [2022-11-23 13:41:10,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11822 states, 6820 states have (on average 1.2526392961876833) internal successors, (8543), 7041 states have internal predecessors, (8543), 4129 states have call successors, (4129), 874 states have call predecessors, (4129), 871 states have return successors, (4126), 4046 states have call predecessors, (4126), 4126 states have call successors, (4126) [2022-11-23 13:41:10,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11822 states to 11822 states and 16798 transitions. [2022-11-23 13:41:10,691 INFO L78 Accepts]: Start accepts. Automaton has 11822 states and 16798 transitions. Word has length 212 [2022-11-23 13:41:10,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:41:10,693 INFO L495 AbstractCegarLoop]: Abstraction has 11822 states and 16798 transitions. [2022-11-23 13:41:10,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-23 13:41:10,694 INFO L276 IsEmpty]: Start isEmpty. Operand 11822 states and 16798 transitions. [2022-11-23 13:41:10,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-23 13:41:10,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:41:10,704 INFO L195 NwaCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:41:10,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 13:41:10,704 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:41:10,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:41:10,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1122544168, now seen corresponding path program 1 times [2022-11-23 13:41:10,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:41:10,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766344818] [2022-11-23 13:41:10,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:41:10,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:41:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:41:11,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1127 trivial. 0 not checked. [2022-11-23 13:41:11,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:41:11,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766344818] [2022-11-23 13:41:11,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766344818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:41:11,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:41:11,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 13:41:11,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266316261] [2022-11-23 13:41:11,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:41:11,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:41:11,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:41:11,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:41:11,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:41:11,912 INFO L87 Difference]: Start difference. First operand 11822 states and 16798 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 13:41:15,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:41:18,769 WARN L539 Checker$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 13:41:20,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:41:20,949 INFO L93 Difference]: Finished difference Result 19686 states and 27972 transitions. [2022-11-23 13:41:20,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:41:20,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 222 [2022-11-23 13:41:20,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:41:21,092 INFO L225 Difference]: With dead ends: 19686 [2022-11-23 13:41:21,092 INFO L226 Difference]: Without dead ends: 19647 [2022-11-23 13:41:21,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:41:21,118 INFO L413 NwaCegarLoop]: 3591 mSDtfsCounter, 2983 mSDsluCounter, 6395 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2983 SdHoareTripleChecker+Valid, 9986 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:41:21,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2983 Valid, 9986 Invalid, 1226 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1225 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2022-11-23 13:41:21,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19647 states. [2022-11-23 13:41:22,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19647 to 19644. [2022-11-23 13:41:22,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19644 states, 11338 states have (on average 1.252690068795202) internal successors, (14203), 11699 states have internal predecessors, (14203), 6849 states have call successors, (6849), 1458 states have call predecessors, (6849), 1455 states have return successors, (6846), 6718 states have call predecessors, (6846), 6846 states have call successors, (6846) [2022-11-23 13:41:22,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19644 states to 19644 states and 27898 transitions. [2022-11-23 13:41:22,400 INFO L78 Accepts]: Start accepts. Automaton has 19644 states and 27898 transitions. Word has length 222 [2022-11-23 13:41:22,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:41:22,401 INFO L495 AbstractCegarLoop]: Abstraction has 19644 states and 27898 transitions. [2022-11-23 13:41:22,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 13:41:22,402 INFO L276 IsEmpty]: Start isEmpty. Operand 19644 states and 27898 transitions. [2022-11-23 13:41:22,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-11-23 13:41:22,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:41:22,420 INFO L195 NwaCegarLoop]: trace histogram [18, 16, 16, 16, 16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:41:22,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 13:41:22,421 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:41:22,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:41:22,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1580320998, now seen corresponding path program 1 times [2022-11-23 13:41:22,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:41:22,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113469725] [2022-11-23 13:41:22,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:41:22,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:41:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:41:22,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2022-11-23 13:41:22,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:41:22,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113469725] [2022-11-23 13:41:22,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113469725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:41:22,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:41:22,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:41:22,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134398407] [2022-11-23 13:41:23,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:41:23,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:41:23,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:41:23,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:41:23,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:41:23,001 INFO L87 Difference]: Start difference. First operand 19644 states and 27898 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-23 13:41:26,243 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 13:41:29,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:41:29,005 INFO L93 Difference]: Finished difference Result 41223 states and 58167 transitions. [2022-11-23 13:41:29,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:41:29,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 238 [2022-11-23 13:41:29,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:41:29,107 INFO L225 Difference]: With dead ends: 41223 [2022-11-23 13:41:29,108 INFO L226 Difference]: Without dead ends: 21612 [2022-11-23 13:41:29,189 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 13:41:29,190 INFO L413 NwaCegarLoop]: 3448 mSDtfsCounter, 2334 mSDsluCounter, 2784 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2334 SdHoareTripleChecker+Valid, 6232 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:41:29,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2334 Valid, 6232 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 869 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-11-23 13:41:29,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21612 states. [2022-11-23 13:41:30,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21612 to 21598. [2022-11-23 13:41:30,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21598 states, 12414 states have (on average 1.2464958917351376) internal successors, (15474), 12843 states have internal predecessors, (15474), 7392 states have call successors, (7392), 1799 states have call predecessors, (7392), 1790 states have return successors, (7395), 7209 states have call predecessors, (7395), 7389 states have call successors, (7395) [2022-11-23 13:41:30,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21598 states to 21598 states and 30261 transitions. [2022-11-23 13:41:30,791 INFO L78 Accepts]: Start accepts. Automaton has 21598 states and 30261 transitions. Word has length 238 [2022-11-23 13:41:30,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:41:30,792 INFO L495 AbstractCegarLoop]: Abstraction has 21598 states and 30261 transitions. [2022-11-23 13:41:30,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-23 13:41:30,793 INFO L276 IsEmpty]: Start isEmpty. Operand 21598 states and 30261 transitions. [2022-11-23 13:41:30,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-11-23 13:41:30,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:41:30,810 INFO L195 NwaCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 5, 5, 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] [2022-11-23 13:41:30,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 13:41:30,810 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:41:30,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:41:30,811 INFO L85 PathProgramCache]: Analyzing trace with hash 712360235, now seen corresponding path program 1 times [2022-11-23 13:41:30,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:41:30,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354691675] [2022-11-23 13:41:30,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:41:30,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:41:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:41:31,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1130 trivial. 0 not checked. [2022-11-23 13:41:31,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:41:31,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354691675] [2022-11-23 13:41:31,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354691675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:41:31,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:41:31,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:41:31,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466084173] [2022-11-23 13:41:31,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:41:31,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:41:31,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:41:31,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:41:31,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:41:31,707 INFO L87 Difference]: Start difference. First operand 21598 states and 30261 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-23 13:41:36,217 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 13:41:38,517 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 13:41:39,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:41:39,698 INFO L93 Difference]: Finished difference Result 51194 states and 71787 transitions. [2022-11-23 13:41:39,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:41:39,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 246 [2022-11-23 13:41:39,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:41:40,000 INFO L225 Difference]: With dead ends: 51194 [2022-11-23 13:41:40,000 INFO L226 Difference]: Without dead ends: 31002 [2022-11-23 13:41:40,095 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 13:41:40,095 INFO L413 NwaCegarLoop]: 5106 mSDtfsCounter, 2656 mSDsluCounter, 2809 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2656 SdHoareTripleChecker+Valid, 7915 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-23 13:41:40,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2656 Valid, 7915 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1179 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2022-11-23 13:41:40,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31002 states. [2022-11-23 13:41:41,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31002 to 30983. [2022-11-23 13:41:42,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30983 states, 17824 states have (on average 1.2446140035906643) internal successors, (22184), 18439 states have internal predecessors, (22184), 10578 states have call successors, (10578), 2594 states have call predecessors, (10578), 2579 states have return successors, (10583), 10309 states have call predecessors, (10583), 10575 states have call successors, (10583) [2022-11-23 13:41:42,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30983 states to 30983 states and 43345 transitions. [2022-11-23 13:41:42,193 INFO L78 Accepts]: Start accepts. Automaton has 30983 states and 43345 transitions. Word has length 246 [2022-11-23 13:41:42,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:41:42,194 INFO L495 AbstractCegarLoop]: Abstraction has 30983 states and 43345 transitions. [2022-11-23 13:41:42,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-23 13:41:42,194 INFO L276 IsEmpty]: Start isEmpty. Operand 30983 states and 43345 transitions. [2022-11-23 13:41:42,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-11-23 13:41:42,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:41:42,217 INFO L195 NwaCegarLoop]: trace histogram [21, 16, 16, 16, 16, 16, 16, 6, 6, 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] [2022-11-23 13:41:42,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 13:41:42,218 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:41:42,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:41:42,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1928601196, now seen corresponding path program 1 times [2022-11-23 13:41:42,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:41:42,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751204866] [2022-11-23 13:41:42,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:41:42,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:41:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:41:42,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1192 trivial. 0 not checked. [2022-11-23 13:41:42,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:41:42,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751204866] [2022-11-23 13:41:42,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751204866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:41:42,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:41:42,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:41:42,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376908572] [2022-11-23 13:41:42,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:41:42,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:41:42,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:41:42,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:41:42,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:41:42,662 INFO L87 Difference]: Start difference. First operand 30983 states and 43345 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-23 13:41:47,500 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 13:41:49,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:41:52,064 WARN L539 Checker$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 13:41:53,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:41:53,660 INFO L93 Difference]: Finished difference Result 75004 states and 105015 transitions. [2022-11-23 13:41:53,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:41:53,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 269 [2022-11-23 13:41:53,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:41:53,986 INFO L225 Difference]: With dead ends: 75004 [2022-11-23 13:41:53,987 INFO L226 Difference]: Without dead ends: 45427 [2022-11-23 13:41:54,119 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 13:41:54,121 INFO L413 NwaCegarLoop]: 5385 mSDtfsCounter, 2893 mSDsluCounter, 2827 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2893 SdHoareTripleChecker+Valid, 8212 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-23 13:41:54,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2893 Valid, 8212 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1214 Invalid, 2 Unknown, 0 Unchecked, 8.7s Time] [2022-11-23 13:41:54,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45427 states. [2022-11-23 13:41:57,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45427 to 45399. [2022-11-23 13:41:57,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45399 states, 26107 states have (on average 1.2436511280499483) internal successors, (32468), 27025 states have internal predecessors, (32468), 15506 states have call successors, (15506), 3806 states have call predecessors, (15506), 3784 states have return successors, (15515), 15098 states have call predecessors, (15515), 15503 states have call successors, (15515) [2022-11-23 13:41:57,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45399 states to 45399 states and 63489 transitions. [2022-11-23 13:41:57,596 INFO L78 Accepts]: Start accepts. Automaton has 45399 states and 63489 transitions. Word has length 269 [2022-11-23 13:41:57,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:41:57,597 INFO L495 AbstractCegarLoop]: Abstraction has 45399 states and 63489 transitions. [2022-11-23 13:41:57,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-23 13:41:57,598 INFO L276 IsEmpty]: Start isEmpty. Operand 45399 states and 63489 transitions. [2022-11-23 13:41:57,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-23 13:41:57,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:41:57,632 INFO L195 NwaCegarLoop]: trace histogram [23, 16, 16, 16, 16, 16, 16, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:41:57,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 13:41:57,632 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:41:57,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:41:57,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1837952694, now seen corresponding path program 1 times [2022-11-23 13:41:57,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:41:57,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690390788] [2022-11-23 13:41:57,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:41:57,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:41:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:41:59,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1309 trivial. 0 not checked. [2022-11-23 13:41:59,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:41:59,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690390788] [2022-11-23 13:41:59,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690390788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:41:59,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:41:59,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 13:41:59,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672164481] [2022-11-23 13:41:59,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:41:59,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:41:59,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:41:59,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:41:59,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:41:59,018 INFO L87 Difference]: Start difference. First operand 45399 states and 63489 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-23 13:42:02,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:42:04,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:42:06,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:42:08,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:42:10,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:42:10,028 INFO L93 Difference]: Finished difference Result 45432 states and 63524 transitions. [2022-11-23 13:42:10,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:42:10,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 294 [2022-11-23 13:42:10,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:42:10,490 INFO L225 Difference]: With dead ends: 45432 [2022-11-23 13:42:10,490 INFO L226 Difference]: Without dead ends: 45430 [2022-11-23 13:42:10,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:42:10,522 INFO L413 NwaCegarLoop]: 3431 mSDtfsCounter, 2280 mSDsluCounter, 6236 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2280 SdHoareTripleChecker+Valid, 9667 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-23 13:42:10,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2280 Valid, 9667 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1225 Invalid, 2 Unknown, 0 Unchecked, 9.6s Time] [2022-11-23 13:42:10,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45430 states. [2022-11-23 13:42:13,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45430 to 45399. [2022-11-23 13:42:13,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45399 states, 26107 states have (on average 1.2434596085341096) internal successors, (32463), 27025 states have internal predecessors, (32463), 15506 states have call successors, (15506), 3806 states have call predecessors, (15506), 3784 states have return successors, (15515), 15098 states have call predecessors, (15515), 15503 states have call successors, (15515) [2022-11-23 13:42:13,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45399 states to 45399 states and 63484 transitions. [2022-11-23 13:42:13,306 INFO L78 Accepts]: Start accepts. Automaton has 45399 states and 63484 transitions. Word has length 294 [2022-11-23 13:42:13,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:42:13,307 INFO L495 AbstractCegarLoop]: Abstraction has 45399 states and 63484 transitions. [2022-11-23 13:42:13,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-23 13:42:13,308 INFO L276 IsEmpty]: Start isEmpty. Operand 45399 states and 63484 transitions. [2022-11-23 13:42:13,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-11-23 13:42:13,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:42:13,431 INFO L195 NwaCegarLoop]: trace histogram [25, 18, 18, 18, 18, 18, 18, 11, 11, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:42:13,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 13:42:13,431 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:42:13,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:42:13,432 INFO L85 PathProgramCache]: Analyzing trace with hash -397975034, now seen corresponding path program 1 times [2022-11-23 13:42:13,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:42:13,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818432740] [2022-11-23 13:42:13,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:42:13,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:42:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:42:15,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1735 trivial. 0 not checked. [2022-11-23 13:42:15,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:42:15,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818432740] [2022-11-23 13:42:15,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818432740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:42:15,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:42:15,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 13:42:15,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401135974] [2022-11-23 13:42:15,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:42:15,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:42:15,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:42:15,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:42:15,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:42:15,773 INFO L87 Difference]: Start difference. First operand 45399 states and 63484 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-23 13:42:19,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:42:22,645 WARN L539 Checker$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 13:42:23,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:42:23,873 INFO L93 Difference]: Finished difference Result 45429 states and 63517 transitions. [2022-11-23 13:42:23,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:42:23,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 432 [2022-11-23 13:42:23,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:42:24,110 INFO L225 Difference]: With dead ends: 45429 [2022-11-23 13:42:24,110 INFO L226 Difference]: Without dead ends: 45427 [2022-11-23 13:42:24,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:42:24,136 INFO L413 NwaCegarLoop]: 2852 mSDtfsCounter, 3121 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3121 SdHoareTripleChecker+Valid, 5702 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-23 13:42:24,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3121 Valid, 5702 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 815 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2022-11-23 13:42:24,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45427 states. [2022-11-23 13:42:26,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45427 to 45397. [2022-11-23 13:42:26,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45397 states, 26106 states have (on average 1.2430858806404659) internal successors, (32452), 27023 states have internal predecessors, (32452), 15506 states have call successors, (15506), 3806 states have call predecessors, (15506), 3784 states have return successors, (15515), 15098 states have call predecessors, (15515), 15503 states have call successors, (15515) [2022-11-23 13:42:26,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45397 states to 45397 states and 63473 transitions. [2022-11-23 13:42:26,751 INFO L78 Accepts]: Start accepts. Automaton has 45397 states and 63473 transitions. Word has length 432 [2022-11-23 13:42:26,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:42:26,752 INFO L495 AbstractCegarLoop]: Abstraction has 45397 states and 63473 transitions. [2022-11-23 13:42:26,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-23 13:42:26,752 INFO L276 IsEmpty]: Start isEmpty. Operand 45397 states and 63473 transitions. [2022-11-23 13:42:26,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2022-11-23 13:42:26,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:42:26,805 INFO L195 NwaCegarLoop]: trace histogram [27, 18, 18, 18, 18, 18, 18, 13, 13, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:42:26,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 13:42:26,806 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:42:26,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:42:26,806 INFO L85 PathProgramCache]: Analyzing trace with hash -143956960, now seen corresponding path program 1 times [2022-11-23 13:42:26,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:42:26,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523941947] [2022-11-23 13:42:26,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:42:26,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:42:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:42:28,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked. [2022-11-23 13:42:28,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:42:28,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523941947] [2022-11-23 13:42:28,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523941947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:42:28,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:42:28,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 13:42:28,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533099863] [2022-11-23 13:42:28,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:42:28,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:42:28,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:42:28,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:42:28,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:42:28,952 INFO L87 Difference]: Start difference. First operand 45397 states and 63473 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2022-11-23 13:42:32,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:42:35,052 WARN L539 Checker$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 13:42:38,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:42:38,289 INFO L93 Difference]: Finished difference Result 76023 states and 106558 transitions. [2022-11-23 13:42:38,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:42:38,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 469 [2022-11-23 13:42:38,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:42:38,889 INFO L225 Difference]: With dead ends: 76023 [2022-11-23 13:42:38,889 INFO L226 Difference]: Without dead ends: 75878 [2022-11-23 13:42:38,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:42:38,926 INFO L413 NwaCegarLoop]: 3638 mSDtfsCounter, 3106 mSDsluCounter, 6440 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3106 SdHoareTripleChecker+Valid, 10078 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-23 13:42:38,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3106 Valid, 10078 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1220 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2022-11-23 13:42:39,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75878 states. [2022-11-23 13:42:42,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75878 to 75875. [2022-11-23 13:42:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75875 states, 43695 states have (on average 1.2438036388602816) internal successors, (54348), 45193 states have internal predecessors, (54348), 25943 states have call successors, (25943), 6267 states have call predecessors, (25943), 6236 states have return successors, (25964), 25304 states have call predecessors, (25964), 25940 states have call successors, (25964) [2022-11-23 13:42:42,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75875 states to 75875 states and 106255 transitions. [2022-11-23 13:42:42,856 INFO L78 Accepts]: Start accepts. Automaton has 75875 states and 106255 transitions. Word has length 469 [2022-11-23 13:42:42,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:42:42,857 INFO L495 AbstractCegarLoop]: Abstraction has 75875 states and 106255 transitions. [2022-11-23 13:42:42,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2022-11-23 13:42:42,857 INFO L276 IsEmpty]: Start isEmpty. Operand 75875 states and 106255 transitions. [2022-11-23 13:42:43,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2022-11-23 13:42:43,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:42:43,001 INFO L195 NwaCegarLoop]: trace histogram [28, 18, 18, 18, 18, 18, 18, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:42:43,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 13:42:43,002 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:42:43,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:42:43,003 INFO L85 PathProgramCache]: Analyzing trace with hash 72654942, now seen corresponding path program 1 times [2022-11-23 13:42:43,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:42:43,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265408648] [2022-11-23 13:42:43,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:42:43,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:42:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:42:44,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2004 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1986 trivial. 0 not checked. [2022-11-23 13:42:44,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:42:44,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265408648] [2022-11-23 13:42:44,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265408648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:42:44,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:42:44,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:42:44,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46982638] [2022-11-23 13:42:44,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:42:44,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:42:44,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:42:44,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:42:44,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:42:44,455 INFO L87 Difference]: Start difference. First operand 75875 states and 106255 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 3 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (70), 3 states have call predecessors, (70), 3 states have call successors, (70) [2022-11-23 13:42:47,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:42:52,198 WARN L539 Checker$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 13:42:54,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:42:54,985 INFO L93 Difference]: Finished difference Result 163709 states and 229380 transitions. [2022-11-23 13:42:54,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:42:54,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 3 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (70), 3 states have call predecessors, (70), 3 states have call successors, (70) Word has length 508 [2022-11-23 13:42:54,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:42:55,409 INFO L225 Difference]: With dead ends: 163709 [2022-11-23 13:42:55,409 INFO L226 Difference]: Without dead ends: 102599 [2022-11-23 13:42:55,663 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 13:42:55,664 INFO L413 NwaCegarLoop]: 3505 mSDtfsCounter, 2488 mSDsluCounter, 2782 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2488 SdHoareTripleChecker+Valid, 6287 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:42:55,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2488 Valid, 6287 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 867 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2022-11-23 13:42:55,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102599 states.