./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc0fa5f-57d9-45ca-b7b3-57d4b7acd1d0/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc0fa5f-57d9-45ca-b7b3-57d4b7acd1d0/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc0fa5f-57d9-45ca-b7b3-57d4b7acd1d0/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc0fa5f-57d9-45ca-b7b3-57d4b7acd1d0/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc0fa5f-57d9-45ca-b7b3-57d4b7acd1d0/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc0fa5f-57d9-45ca-b7b3-57d4b7acd1d0/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9ca2eb28b930065096f039703bc8c545a25de7919cc90a3441476b4fab43b08c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:49:41,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:49:41,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:49:42,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:49:42,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:49:42,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:49:42,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:49:42,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:49:42,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:49:42,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:49:42,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:49:42,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:49:42,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:49:42,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:49:42,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:49:42,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:49:42,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:49:42,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:49:42,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:49:42,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:49:42,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:49:42,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:49:42,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:49:42,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:49:42,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:49:42,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:49:42,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:49:42,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:49:42,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:49:42,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:49:42,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:49:42,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:49:42,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:49:42,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:49:42,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:49:42,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:49:42,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:49:42,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:49:42,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:49:42,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:49:42,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:49:42,115 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc0fa5f-57d9-45ca-b7b3-57d4b7acd1d0/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:49:42,170 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:49:42,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:49:42,174 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:49:42,174 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:49:42,175 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:49:42,176 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:49:42,176 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:49:42,176 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:49:42,177 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:49:42,177 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:49:42,179 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:49:42,179 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:49:42,179 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:49:42,179 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:49:42,180 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:49:42,180 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:49:42,181 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:49:42,181 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:49:42,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:49:42,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:49:42,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:49:42,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:49:42,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:49:42,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:49:42,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:49:42,184 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:49:42,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:49:42,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:49:42,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:49:42,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:49:42,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:49:42,186 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:49:42,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:49:42,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:49:42,187 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:49:42,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:49:42,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:49:42,187 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:49:42,188 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_cfc0fa5f-57d9-45ca-b7b3-57d4b7acd1d0/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc0fa5f-57d9-45ca-b7b3-57d4b7acd1d0/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ca2eb28b930065096f039703bc8c545a25de7919cc90a3441476b4fab43b08c [2022-11-19 07:49:42,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:49:42,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:49:42,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:49:42,561 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:49:42,562 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:49:42,564 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc0fa5f-57d9-45ca-b7b3-57d4b7acd1d0/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2022-11-19 07:49:42,648 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc0fa5f-57d9-45ca-b7b3-57d4b7acd1d0/bin/utaipan-I9t0OCRTmS/data/b946c88e5/8484ead7bf3e46b7b984784ff2100b2f/FLAG9ad9e0d17 [2022-11-19 07:49:43,732 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:49:43,733 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc0fa5f-57d9-45ca-b7b3-57d4b7acd1d0/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2022-11-19 07:49:43,770 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc0fa5f-57d9-45ca-b7b3-57d4b7acd1d0/bin/utaipan-I9t0OCRTmS/data/b946c88e5/8484ead7bf3e46b7b984784ff2100b2f/FLAG9ad9e0d17 [2022-11-19 07:49:44,155 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc0fa5f-57d9-45ca-b7b3-57d4b7acd1d0/bin/utaipan-I9t0OCRTmS/data/b946c88e5/8484ead7bf3e46b7b984784ff2100b2f [2022-11-19 07:49:44,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:49:44,159 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:49:44,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:49:44,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:49:44,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:49:44,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:44" (1/1) ... [2022-11-19 07:49:44,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1595ead8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:44, skipping insertion in model container [2022-11-19 07:49:44,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:44" (1/1) ... [2022-11-19 07:49:44,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:49:44,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:49:45,231 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc0fa5f-57d9-45ca-b7b3-57d4b7acd1d0/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i[152690,152703] [2022-11-19 07:49:45,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:49:45,608 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:49:45,817 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc0fa5f-57d9-45ca-b7b3-57d4b7acd1d0/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i[152690,152703] [2022-11-19 07:49:45,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:49:45,986 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:49:45,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:45 WrapperNode [2022-11-19 07:49:45,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:49:45,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:49:45,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:49:45,989 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:49:45,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:45" (1/1) ... [2022-11-19 07:49:46,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:45" (1/1) ... [2022-11-19 07:49:46,127 INFO L138 Inliner]: procedures = 110, calls = 180, calls flagged for inlining = 54, calls inlined = 43, statements flattened = 631 [2022-11-19 07:49:46,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:49:46,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:49:46,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:49:46,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:49:46,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:45" (1/1) ... [2022-11-19 07:49:46,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:45" (1/1) ... [2022-11-19 07:49:46,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:45" (1/1) ... [2022-11-19 07:49:46,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:45" (1/1) ... [2022-11-19 07:49:46,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:45" (1/1) ... [2022-11-19 07:49:46,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:45" (1/1) ... [2022-11-19 07:49:46,241 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:45" (1/1) ... [2022-11-19 07:49:46,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:45" (1/1) ... [2022-11-19 07:49:46,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:49:46,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:49:46,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:49:46,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:49:46,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:45" (1/1) ... [2022-11-19 07:49:46,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:49:46,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc0fa5f-57d9-45ca-b7b3-57d4b7acd1d0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:49:46,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc0fa5f-57d9-45ca-b7b3-57d4b7acd1d0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:49:46,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc0fa5f-57d9-45ca-b7b3-57d4b7acd1d0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:49:46,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:49:46,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:49:46,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:49:46,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:49:46,397 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:49:46,397 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2022-11-19 07:49:46,397 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2022-11-19 07:49:46,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-11-19 07:49:46,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-11-19 07:49:46,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:49:46,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:49:46,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-11-19 07:49:46,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-11-19 07:49:46,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:49:46,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:49:46,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:49:46,399 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2022-11-19 07:49:46,399 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2022-11-19 07:49:46,399 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-19 07:49:46,399 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-19 07:49:46,399 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:49:46,400 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:49:46,400 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2022-11-19 07:49:46,400 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2022-11-19 07:49:46,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:49:46,400 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2022-11-19 07:49:46,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2022-11-19 07:49:46,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:49:46,401 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2022-11-19 07:49:46,401 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2022-11-19 07:49:46,401 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2022-11-19 07:49:46,401 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2022-11-19 07:49:46,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:49:46,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:49:46,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:49:46,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-19 07:49:46,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-19 07:49:46,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:49:46,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:49:46,403 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2022-11-19 07:49:46,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2022-11-19 07:49:46,403 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2022-11-19 07:49:46,404 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2022-11-19 07:49:46,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:49:46,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:49:46,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:49:46,901 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:49:46,905 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:49:47,243 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:49:47,687 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:49:48,201 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:49:48,201 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 07:49:48,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:48 BoogieIcfgContainer [2022-11-19 07:49:48,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:49:48,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:49:48,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:49:48,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:49:48,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:49:44" (1/3) ... [2022-11-19 07:49:48,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b15bc64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:48, skipping insertion in model container [2022-11-19 07:49:48,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:45" (2/3) ... [2022-11-19 07:49:48,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b15bc64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:48, skipping insertion in model container [2022-11-19 07:49:48,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:48" (3/3) ... [2022-11-19 07:49:48,219 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2022-11-19 07:49:48,249 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:49:48,249 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:49:48,328 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:49:48,338 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;@2e863390, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:49:48,338 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:49:48,344 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 114 states have (on average 1.4298245614035088) internal successors, (163), 120 states have internal predecessors, (163), 35 states have call successors, (35), 17 states have call predecessors, (35), 16 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-11-19 07:49:48,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-19 07:49:48,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:48,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:48,358 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:49:48,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:48,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1251365286, now seen corresponding path program 1 times [2022-11-19 07:49:48,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:48,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275885059] [2022-11-19 07:49:48,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:48,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:48,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:48,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:48,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275885059] [2022-11-19 07:49:48,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275885059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:48,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:48,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:49:48,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716914455] [2022-11-19 07:49:48,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:48,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:49:48,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:49,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:49:49,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:49:49,016 INFO L87 Difference]: Start difference. First operand has 167 states, 114 states have (on average 1.4298245614035088) internal successors, (163), 120 states have internal predecessors, (163), 35 states have call successors, (35), 17 states have call predecessors, (35), 16 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:49:49,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:49,575 INFO L93 Difference]: Finished difference Result 481 states and 694 transitions. [2022-11-19 07:49:49,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:49:49,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-11-19 07:49:49,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:49,594 INFO L225 Difference]: With dead ends: 481 [2022-11-19 07:49:49,594 INFO L226 Difference]: Without dead ends: 307 [2022-11-19 07:49:49,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:49:49,604 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 199 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:49,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 407 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:49:49,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-19 07:49:49,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2022-11-19 07:49:49,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 216 states have (on average 1.3611111111111112) internal successors, (294), 218 states have internal predecessors, (294), 60 states have call successors, (60), 31 states have call predecessors, (60), 30 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-11-19 07:49:49,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 413 transitions. [2022-11-19 07:49:49,738 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 413 transitions. Word has length 23 [2022-11-19 07:49:49,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:49,739 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 413 transitions. [2022-11-19 07:49:49,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:49:49,740 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 413 transitions. [2022-11-19 07:49:49,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-19 07:49:49,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:49,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:49,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:49:49,744 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:49:49,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:49,745 INFO L85 PathProgramCache]: Analyzing trace with hash 2068103764, now seen corresponding path program 1 times [2022-11-19 07:49:49,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:49,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491549906] [2022-11-19 07:49:49,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:49,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:50,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:50,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:50,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491549906] [2022-11-19 07:49:50,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491549906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:50,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:50,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:49:50,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475633813] [2022-11-19 07:49:50,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:50,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:49:50,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:50,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:49:50,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:49:50,096 INFO L87 Difference]: Start difference. First operand 307 states and 413 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:49:50,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:50,524 INFO L93 Difference]: Finished difference Result 611 states and 850 transitions. [2022-11-19 07:49:50,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:49:50,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2022-11-19 07:49:50,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:50,543 INFO L225 Difference]: With dead ends: 611 [2022-11-19 07:49:50,543 INFO L226 Difference]: Without dead ends: 606 [2022-11-19 07:49:50,545 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 [2022-11-19 07:49:50,555 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 200 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:50,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 627 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:49:50,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2022-11-19 07:49:50,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 598. [2022-11-19 07:49:50,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 419 states have (on average 1.360381861575179) internal successors, (570), 423 states have internal predecessors, (570), 118 states have call successors, (118), 61 states have call predecessors, (118), 60 states have return successors, (145), 117 states have call predecessors, (145), 117 states have call successors, (145) [2022-11-19 07:49:50,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 833 transitions. [2022-11-19 07:49:50,698 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 833 transitions. Word has length 26 [2022-11-19 07:49:50,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:50,699 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 833 transitions. [2022-11-19 07:49:50,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:49:50,700 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 833 transitions. [2022-11-19 07:49:50,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-19 07:49:50,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:50,718 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-19 07:49:50,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:49:50,719 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:49:50,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:50,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1111201139, now seen corresponding path program 1 times [2022-11-19 07:49:50,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:50,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051083117] [2022-11-19 07:49:50,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:50,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:50,915 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:49:50,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:50,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051083117] [2022-11-19 07:49:50,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051083117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:50,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:50,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:49:50,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214332790] [2022-11-19 07:49:50,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:50,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:49:50,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:50,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:49:50,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:49:50,921 INFO L87 Difference]: Start difference. First operand 598 states and 833 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 07:49:51,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:51,228 INFO L93 Difference]: Finished difference Result 1264 states and 1759 transitions. [2022-11-19 07:49:51,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:49:51,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 68 [2022-11-19 07:49:51,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:51,240 INFO L225 Difference]: With dead ends: 1264 [2022-11-19 07:49:51,240 INFO L226 Difference]: Without dead ends: 669 [2022-11-19 07:49:51,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:49:51,255 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 36 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:51,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 352 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:49:51,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-11-19 07:49:51,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 664. [2022-11-19 07:49:51,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 480 states have (on average 1.3645833333333333) internal successors, (655), 484 states have internal predecessors, (655), 120 states have call successors, (120), 64 states have call predecessors, (120), 63 states have return successors, (147), 119 states have call predecessors, (147), 119 states have call successors, (147) [2022-11-19 07:49:51,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 922 transitions. [2022-11-19 07:49:51,355 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 922 transitions. Word has length 68 [2022-11-19 07:49:51,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:51,358 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 922 transitions. [2022-11-19 07:49:51,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 07:49:51,359 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 922 transitions. [2022-11-19 07:49:51,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-19 07:49:51,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:51,363 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 07:49:51,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:49:51,368 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:49:51,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:51,369 INFO L85 PathProgramCache]: Analyzing trace with hash -732578664, now seen corresponding path program 1 times [2022-11-19 07:49:51,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:51,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214862439] [2022-11-19 07:49:51,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:51,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:51,514 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-19 07:49:51,515 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:51,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214862439] [2022-11-19 07:49:51,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214862439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:51,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:51,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:49:51,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465102876] [2022-11-19 07:49:51,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:51,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:49:51,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:51,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:49:51,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:49:51,518 INFO L87 Difference]: Start difference. First operand 664 states and 922 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-19 07:49:51,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:51,871 INFO L93 Difference]: Finished difference Result 1852 states and 2565 transitions. [2022-11-19 07:49:51,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:49:51,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 98 [2022-11-19 07:49:51,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:51,912 INFO L225 Difference]: With dead ends: 1852 [2022-11-19 07:49:51,912 INFO L226 Difference]: Without dead ends: 1201 [2022-11-19 07:49:51,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:49:51,916 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 181 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:51,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 376 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:49:51,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2022-11-19 07:49:52,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1196. [2022-11-19 07:49:52,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 864 states have (on average 1.34375) internal successors, (1161), 872 states have internal predecessors, (1161), 208 states have call successors, (208), 124 states have call predecessors, (208), 123 states have return successors, (255), 207 states have call predecessors, (255), 207 states have call successors, (255) [2022-11-19 07:49:52,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1624 transitions. [2022-11-19 07:49:52,030 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1624 transitions. Word has length 98 [2022-11-19 07:49:52,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:52,033 INFO L495 AbstractCegarLoop]: Abstraction has 1196 states and 1624 transitions. [2022-11-19 07:49:52,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-19 07:49:52,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1624 transitions. [2022-11-19 07:49:52,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-19 07:49:52,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:52,041 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 07:49:52,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:49:52,047 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:49:52,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:52,048 INFO L85 PathProgramCache]: Analyzing trace with hash 112575370, now seen corresponding path program 1 times [2022-11-19 07:49:52,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:52,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601666295] [2022-11-19 07:49:52,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:52,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:52,246 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-19 07:49:52,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:52,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601666295] [2022-11-19 07:49:52,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601666295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:52,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:52,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:49:52,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254425062] [2022-11-19 07:49:52,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:52,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:49:52,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:52,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:49:52,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:49:52,250 INFO L87 Difference]: Start difference. First operand 1196 states and 1624 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-19 07:49:52,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:52,465 INFO L93 Difference]: Finished difference Result 1814 states and 2537 transitions. [2022-11-19 07:49:52,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:49:52,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 98 [2022-11-19 07:49:52,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:52,475 INFO L225 Difference]: With dead ends: 1814 [2022-11-19 07:49:52,475 INFO L226 Difference]: Without dead ends: 1212 [2022-11-19 07:49:52,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:49:52,479 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 4 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:52,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 360 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:49:52,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2022-11-19 07:49:52,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1212. [2022-11-19 07:49:52,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 876 states have (on average 1.3390410958904109) internal successors, (1173), 888 states have internal predecessors, (1173), 208 states have call successors, (208), 124 states have call predecessors, (208), 127 states have return successors, (263), 207 states have call predecessors, (263), 207 states have call successors, (263) [2022-11-19 07:49:52,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1644 transitions. [2022-11-19 07:49:52,594 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1644 transitions. Word has length 98 [2022-11-19 07:49:52,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:52,595 INFO L495 AbstractCegarLoop]: Abstraction has 1212 states and 1644 transitions. [2022-11-19 07:49:52,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-19 07:49:52,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1644 transitions. [2022-11-19 07:49:52,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-19 07:49:52,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:52,604 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 07:49:52,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:49:52,605 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:49:52,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:52,606 INFO L85 PathProgramCache]: Analyzing trace with hash 418382135, now seen corresponding path program 1 times [2022-11-19 07:49:52,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:52,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789524692] [2022-11-19 07:49:52,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:52,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:53,281 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-19 07:49:53,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:53,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789524692] [2022-11-19 07:49:53,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789524692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:53,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:53,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:49:53,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112293213] [2022-11-19 07:49:53,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:53,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:49:53,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:53,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:49:53,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:49:53,287 INFO L87 Difference]: Start difference. First operand 1212 states and 1644 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-19 07:49:54,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:54,754 INFO L93 Difference]: Finished difference Result 2659 states and 3675 transitions. [2022-11-19 07:49:54,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:49:54,755 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 99 [2022-11-19 07:49:54,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:54,768 INFO L225 Difference]: With dead ends: 2659 [2022-11-19 07:49:54,769 INFO L226 Difference]: Without dead ends: 1460 [2022-11-19 07:49:54,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:49:54,777 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 396 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:54,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 708 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-19 07:49:54,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2022-11-19 07:49:54,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1264. [2022-11-19 07:49:54,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 908 states have (on average 1.3182819383259912) internal successors, (1197), 916 states have internal predecessors, (1197), 220 states have call successors, (220), 124 states have call predecessors, (220), 135 states have return successors, (251), 231 states have call predecessors, (251), 219 states have call successors, (251) [2022-11-19 07:49:54,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1668 transitions. [2022-11-19 07:49:54,900 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1668 transitions. Word has length 99 [2022-11-19 07:49:54,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:54,902 INFO L495 AbstractCegarLoop]: Abstraction has 1264 states and 1668 transitions. [2022-11-19 07:49:54,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-19 07:49:54,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1668 transitions. [2022-11-19 07:49:54,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-19 07:49:54,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:54,907 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-19 07:49:54,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:49:54,908 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:49:54,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:54,909 INFO L85 PathProgramCache]: Analyzing trace with hash 890081793, now seen corresponding path program 1 times [2022-11-19 07:49:54,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:54,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896238756] [2022-11-19 07:49:54,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:54,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:55,732 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-19 07:49:55,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:55,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896238756] [2022-11-19 07:49:55,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896238756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:55,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:55,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-19 07:49:55,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277472615] [2022-11-19 07:49:55,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:55,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:49:55,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:55,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:49:55,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:49:55,736 INFO L87 Difference]: Start difference. First operand 1264 states and 1668 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 6 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 8 states have call predecessors, (13), 5 states have call successors, (13) [2022-11-19 07:49:57,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:57,982 INFO L93 Difference]: Finished difference Result 2658 states and 3737 transitions. [2022-11-19 07:49:57,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 07:49:57,983 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 6 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 8 states have call predecessors, (13), 5 states have call successors, (13) Word has length 119 [2022-11-19 07:49:57,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:57,997 INFO L225 Difference]: With dead ends: 2658 [2022-11-19 07:49:57,997 INFO L226 Difference]: Without dead ends: 1984 [2022-11-19 07:49:58,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-11-19 07:49:58,018 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 588 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:58,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 1337 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-19 07:49:58,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2022-11-19 07:49:58,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1448. [2022-11-19 07:49:58,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1032 states have (on average 1.2877906976744187) internal successors, (1329), 1032 states have internal predecessors, (1329), 240 states have call successors, (240), 140 states have call predecessors, (240), 175 states have return successors, (371), 283 states have call predecessors, (371), 239 states have call successors, (371) [2022-11-19 07:49:58,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1940 transitions. [2022-11-19 07:49:58,264 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1940 transitions. Word has length 119 [2022-11-19 07:49:58,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:58,265 INFO L495 AbstractCegarLoop]: Abstraction has 1448 states and 1940 transitions. [2022-11-19 07:49:58,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 6 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 8 states have call predecessors, (13), 5 states have call successors, (13) [2022-11-19 07:49:58,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1940 transitions. [2022-11-19 07:49:58,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-19 07:49:58,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:58,272 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-19 07:49:58,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:49:58,273 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:49:58,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:58,273 INFO L85 PathProgramCache]: Analyzing trace with hash -188768285, now seen corresponding path program 1 times [2022-11-19 07:49:58,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:58,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945588852] [2022-11-19 07:49:58,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:58,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:58,521 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-19 07:49:58,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:58,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945588852] [2022-11-19 07:49:58,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945588852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:58,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:58,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:49:58,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445106653] [2022-11-19 07:49:58,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:58,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:49:58,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:58,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:49:58,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:49:58,526 INFO L87 Difference]: Start difference. First operand 1448 states and 1940 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-19 07:49:58,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:58,841 INFO L93 Difference]: Finished difference Result 2334 states and 3229 transitions. [2022-11-19 07:49:58,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:49:58,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 121 [2022-11-19 07:49:58,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:58,855 INFO L225 Difference]: With dead ends: 2334 [2022-11-19 07:49:58,855 INFO L226 Difference]: Without dead ends: 1476 [2022-11-19 07:49:58,860 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 [2022-11-19 07:49:58,861 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 10 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:58,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 544 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:49:58,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-19 07:49:58,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1456. [2022-11-19 07:49:59,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1040 states have (on average 1.289423076923077) internal successors, (1341), 1040 states have internal predecessors, (1341), 240 states have call successors, (240), 140 states have call predecessors, (240), 175 states have return successors, (371), 283 states have call predecessors, (371), 239 states have call successors, (371) [2022-11-19 07:49:59,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 1952 transitions. [2022-11-19 07:49:59,016 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 1952 transitions. Word has length 121 [2022-11-19 07:49:59,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:59,018 INFO L495 AbstractCegarLoop]: Abstraction has 1456 states and 1952 transitions. [2022-11-19 07:49:59,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-19 07:49:59,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 1952 transitions. [2022-11-19 07:49:59,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-19 07:49:59,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:59,027 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:59,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:49:59,028 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:49:59,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:59,030 INFO L85 PathProgramCache]: Analyzing trace with hash -2086492843, now seen corresponding path program 1 times [2022-11-19 07:49:59,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:59,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195513134] [2022-11-19 07:49:59,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:59,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:49:59,187 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:49:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:49:59,401 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:49:59,401 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:49:59,403 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:49:59,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:49:59,411 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:59,417 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:49:59,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:49:59 BoogieIcfgContainer [2022-11-19 07:49:59,616 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:49:59,617 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:49:59,617 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:49:59,617 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:49:59,618 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:48" (3/4) ... [2022-11-19 07:49:59,621 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-19 07:49:59,772 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc0fa5f-57d9-45ca-b7b3-57d4b7acd1d0/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:49:59,773 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:49:59,773 INFO L158 Benchmark]: Toolchain (without parser) took 15614.09ms. Allocated memory was 119.5MB in the beginning and 331.4MB in the end (delta: 211.8MB). Free memory was 74.6MB in the beginning and 205.3MB in the end (delta: -130.7MB). Peak memory consumption was 80.6MB. Max. memory is 16.1GB. [2022-11-19 07:49:59,774 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 119.5MB. Free memory is still 98.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:49:59,774 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1826.25ms. Allocated memory was 119.5MB in the beginning and 157.3MB in the end (delta: 37.7MB). Free memory was 74.4MB in the beginning and 84.4MB in the end (delta: -10.0MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. [2022-11-19 07:49:59,775 INFO L158 Benchmark]: Boogie Procedure Inliner took 139.17ms. Allocated memory is still 157.3MB. Free memory was 84.4MB in the beginning and 79.7MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 07:49:59,775 INFO L158 Benchmark]: Boogie Preprocessor took 140.61ms. Allocated memory is still 157.3MB. Free memory was 79.7MB in the beginning and 74.9MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 07:49:59,776 INFO L158 Benchmark]: RCFGBuilder took 1936.90ms. Allocated memory is still 157.3MB. Free memory was 74.9MB in the beginning and 108.7MB in the end (delta: -33.9MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. [2022-11-19 07:49:59,776 INFO L158 Benchmark]: TraceAbstraction took 11407.07ms. Allocated memory was 157.3MB in the beginning and 331.4MB in the end (delta: 174.1MB). Free memory was 107.6MB in the beginning and 222.2MB in the end (delta: -114.6MB). Peak memory consumption was 59.4MB. Max. memory is 16.1GB. [2022-11-19 07:49:59,776 INFO L158 Benchmark]: Witness Printer took 155.94ms. Allocated memory is still 331.4MB. Free memory was 222.2MB in the beginning and 205.3MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-19 07:49:59,779 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 119.5MB. Free memory is still 98.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1826.25ms. Allocated memory was 119.5MB in the beginning and 157.3MB in the end (delta: 37.7MB). Free memory was 74.4MB in the beginning and 84.4MB in the end (delta: -10.0MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 139.17ms. Allocated memory is still 157.3MB. Free memory was 84.4MB in the beginning and 79.7MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 140.61ms. Allocated memory is still 157.3MB. Free memory was 79.7MB in the beginning and 74.9MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1936.90ms. Allocated memory is still 157.3MB. Free memory was 74.9MB in the beginning and 108.7MB in the end (delta: -33.9MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. * TraceAbstraction took 11407.07ms. Allocated memory was 157.3MB in the beginning and 331.4MB in the end (delta: 174.1MB). Free memory was 107.6MB in the beginning and 222.2MB in the end (delta: -114.6MB). Peak memory consumption was 59.4MB. Max. memory is 16.1GB. * Witness Printer took 155.94ms. Allocated memory is still 331.4MB. Free memory was 222.2MB in the beginning and 205.3MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 5320]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L5837] Element set_impl[15] ; [L5343] int LDV_IN_INTERRUPT = 1; [L5972] Set LDV_SKBS ; [L5344] struct sk_buff *proto_group0 ; [L5633] int ldv_retval_0 ; [L5838] int last_index = 0; [L5347] struct net_device *proto_group1 ; [L5634] int ldv_retval_1 ; [L5345] int ref_cnt ; [L5564-L5566] static struct hdlc_proto proto = {& x25_open, & x25_close, 0, 0, 0, & x25_ioctl, 0, & x25_rx, & x25_xmit, & __this_module, 0}; [L5348] int ldv_state_variable_0 ; [L5346] int ldv_state_variable_1 ; [L5651] struct ifreq *ldvarg0 ; [L5652] void *tmp ; [L5653] int tmp___0 ; [L5654] int tmp___1 ; [L5655] int tmp___2 ; VAL [__this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, proto={8:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={7:0}] [L5657] CALL, EXPR ldv_successful_zalloc(40UL) VAL [\old(__size)=40, __this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, proto={8:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={7:0}] [L5262] EXPR, FCALL calloc(1UL, __size) VAL [\old(__size)=40, __size=40, __this_module={3266:3265}, calloc(1UL, __size)={-2:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, proto={8:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={7:0}] [L5262] void *p = calloc(1UL, __size); VAL [\old(__size)=40, __size=40, __this_module={3266:3265}, calloc(1UL, __size)={-2:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, p={-2:0}, proto={8:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={7:0}] [L5263] CALL assume_abort_if_not(p != (void *)0) VAL [\old(cond)=1, __this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, proto={8:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={7:0}] [L5259] COND FALSE !(!cond) [L5263] RET assume_abort_if_not(p != (void *)0) VAL [\old(__size)=40, __size=40, __this_module={3266:3265}, calloc(1UL, __size)={-2:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, p={-2:0}, proto={8:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={7:0}] [L5264] return p; [L5657] RET, EXPR ldv_successful_zalloc(40UL) VAL [__this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_successful_zalloc(40UL)={-2:0}, proto={8:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={7:0}] [L5657] tmp = ldv_successful_zalloc(40UL) [L5658] ldvarg0 = (struct ifreq *)tmp [L5659] CALL ldv_initialize() [L5991] CALL ldv_set_init(LDV_SKBS) [L5843] set = set_impl [L5844] last_index = 0 [L5991] RET ldv_set_init(LDV_SKBS) [L5659] RET ldv_initialize() [L5660] ldv_state_variable_1 = 0 [L5661] ref_cnt = 0 [L5662] ldv_state_variable_0 = 1 VAL [__this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=0, ldvarg0={-2:0}, proto={8:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={7:0}, tmp={-2:0}] [L5664] tmp___0 = __VERIFIER_nondet_int() [L5666] case 0: [L5731] case 1: VAL [__this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=0, ldvarg0={-2:0}, proto={8:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={7:0}, tmp={-2:0}, tmp___0=1] [L5732] COND TRUE ldv_state_variable_0 != 0 [L5733] tmp___2 = __VERIFIER_nondet_int() [L5735] case 0: [L5743] case 1: VAL [__this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=0, ldvarg0={-2:0}, proto={8:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={7:0}, tmp={-2:0}, tmp___0=1, tmp___2=1] [L5744] COND TRUE ldv_state_variable_0 == 1 [L5745] CALL, EXPR mod_init() [L5622] FCALL register_hdlc_protocol(& proto) [L5623] return (0); [L5745] RET, EXPR mod_init() [L5745] ldv_retval_1 = mod_init() [L5746] COND TRUE ldv_retval_1 == 0 [L5747] ldv_state_variable_0 = 3 [L5748] ldv_state_variable_1 = 1 [L5749] CALL ldv_initialize_hdlc_proto_1() [L5639] void *tmp ; [L5640] void *tmp___0 ; VAL [__this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={7:0}] [L5642] CALL, EXPR ldv_successful_zalloc(3264UL) VAL [\old(__size)=3264, __this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={7:0}] [L5262] EXPR, FCALL calloc(1UL, __size) VAL [\old(__size)=3264, __size=3264, __this_module={3266:3265}, calloc(1UL, __size)={-3:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={7:0}] [L5262] void *p = calloc(1UL, __size); VAL [\old(__size)=3264, __size=3264, __this_module={3266:3265}, calloc(1UL, __size)={-3:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, p={-3:0}, proto={8:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={7:0}] [L5263] CALL assume_abort_if_not(p != (void *)0) VAL [\old(cond)=1, __this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={7:0}] [L5259] COND FALSE !(!cond) [L5263] RET assume_abort_if_not(p != (void *)0) VAL [\old(__size)=3264, __size=3264, __this_module={3266:3265}, calloc(1UL, __size)={-3:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, p={-3:0}, proto={8:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={7:0}] [L5264] return p; [L5642] RET, EXPR ldv_successful_zalloc(3264UL) VAL [__this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_successful_zalloc(3264UL)={-3:0}, proto={8:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={7:0}] [L5642] tmp = ldv_successful_zalloc(3264UL) [L5643] proto_group1 = (struct net_device *)tmp VAL [__this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={0:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}, tmp={-3:0}] [L5644] CALL, EXPR ldv_successful_zalloc(232UL) VAL [\old(__size)=232, __this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={0:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}] [L5262] EXPR, FCALL calloc(1UL, __size) VAL [\old(__size)=232, __size=232, __this_module={3266:3265}, calloc(1UL, __size)={-18446744073709551615:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={0:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}] [L5262] void *p = calloc(1UL, __size); VAL [\old(__size)=232, __size=232, __this_module={3266:3265}, calloc(1UL, __size)={-18446744073709551615:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, p={-18446744073709551615:0}, proto={8:0}, proto_group0={0:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}] [L5263] CALL assume_abort_if_not(p != (void *)0) VAL [\old(cond)=1, __this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={0:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}] [L5259] COND FALSE !(!cond) [L5263] RET assume_abort_if_not(p != (void *)0) VAL [\old(__size)=232, __size=232, __this_module={3266:3265}, calloc(1UL, __size)={-18446744073709551615:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, p={-18446744073709551615:0}, proto={8:0}, proto_group0={0:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}] [L5264] return p; [L5644] RET, EXPR ldv_successful_zalloc(232UL) VAL [__this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_successful_zalloc(232UL)={-18446744073709551615:0}, proto={8:0}, proto_group0={0:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}, tmp={-3:0}] [L5644] tmp___0 = ldv_successful_zalloc(232UL) [L5645] proto_group0 = (struct sk_buff *)tmp___0 [L5749] RET ldv_initialize_hdlc_proto_1() [L5752] COND FALSE !(ldv_retval_1 != 0) VAL [__this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldvarg0={-2:0}, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}, tmp={-2:0}, tmp___0=1, tmp___2=1] [L5664] tmp___0 = __VERIFIER_nondet_int() [L5666] case 0: VAL [__this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldvarg0={-2:0}, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}, tmp={-2:0}, tmp___0=0, tmp___2=1] [L5667] COND TRUE ldv_state_variable_1 != 0 [L5668] tmp___1 = __VERIFIER_nondet_int() [L5670] case 0: VAL [__this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldvarg0={-2:0}, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}, tmp={-2:0}, tmp___0=0, tmp___1=0, tmp___2=1] [L5671] COND TRUE ldv_state_variable_1 == 1 VAL [__this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldvarg0={-2:0}, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}, tmp={-2:0}, tmp___0=0, tmp___1=0, tmp___2=1] [L5672] CALL x25_xmit(proto_group0, proto_group1) VAL [\old(last_index)=0, __this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}] [L5471] int result ; VAL [\old(last_index)=0, __this_module={3266:3265}, dev={-3:0}, dev={-3:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}, skb={-18446744073709551615:0}, skb={-18446744073709551615:0}] [L5473] CALL assume_abort_if_not(((void*)(skb)) != ((void*) 0)) VAL [\old(cond)=1, \old(last_index)=0, __this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}] [L5259] COND FALSE !(!cond) [L5473] RET assume_abort_if_not(((void*)(skb)) != ((void*) 0)) VAL [\old(last_index)=0, __this_module={3266:3265}, dev={-3:0}, dev={-3:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}, skb={-18446744073709551615:0}, skb={-18446744073709551615:0}] [L5474] EXPR skb->data VAL [\old(last_index)=0, __this_module={3266:3265}, dev={-3:0}, dev={-3:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}, skb={-18446744073709551615:0}, skb={-18446744073709551615:0}, skb->data={3268:0}] [L5474] CALL assume_abort_if_not(((void*)((skb->data))) != ((void*) 0)) VAL [\old(cond)=1, \old(last_index)=0, __this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}] [L5259] COND FALSE !(!cond) [L5474] RET assume_abort_if_not(((void*)((skb->data))) != ((void*) 0)) VAL [\old(last_index)=0, __this_module={3266:3265}, dev={-3:0}, dev={-3:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}, skb={-18446744073709551615:0}, skb={-18446744073709551615:0}, skb->data={3268:0}] [L5475] skb->data [L5476] case 0: [L5484] case 1: [L5485] CALL, EXPR lapb_connect_request(dev) [L6068] return __VERIFIER_nondet_int(); [L5485] RET, EXPR lapb_connect_request(dev) [L5485] result = lapb_connect_request(dev) [L5486] COND TRUE result != 0 VAL [\old(last_index)=0, __this_module={3266:3265}, dev={-3:0}, dev={-3:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, result=3, set_impl={7:0}, skb={-18446744073709551615:0}, skb={-18446744073709551615:0}, skb->data=257skb->data={3268:0}] [L5487] COND TRUE result == 3 [L5488] CALL x25_connected(dev, 0) [L5428] CALL x25_connect_disconnect(dev, reason, 1) VAL [\old(last_index)=0, __this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}] [L5409] struct sk_buff *skb ; [L5410] unsigned char *ptr ; [L5412] CALL, EXPR ldv_dev_alloc_skb_12(1U) [L5814] struct sk_buff *tmp ; VAL [\old(last_index)=0, \old(length)=1, __this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, length=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}] [L5816] CALL, EXPR ldv_skb_alloc() VAL [\old(last_index)=0, __this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}] [L5975] void *skb ; [L5976] void *tmp___7 ; VAL [\old(last_index)=0, __this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}] [L5978] CALL, EXPR ldv_successful_zalloc(sizeof(struct sk_buff___0 )) VAL [\old(__size)=248, \old(last_index)=0, __this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}] [L5262] EXPR, FCALL calloc(1UL, __size) VAL [\old(__size)=248, \old(last_index)=0, __size=248, __this_module={3266:3265}, calloc(1UL, __size)={-36893488147419103232:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}] [L5262] void *p = calloc(1UL, __size); VAL [\old(__size)=248, \old(last_index)=0, __size=248, __this_module={3266:3265}, calloc(1UL, __size)={-36893488147419103232:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, p={-36893488147419103232:0}, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}] [L5263] CALL assume_abort_if_not(p != (void *)0) VAL [\old(cond)=1, \old(last_index)=0, __this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}] [L5259] COND FALSE !(!cond) [L5263] RET assume_abort_if_not(p != (void *)0) VAL [\old(__size)=248, \old(last_index)=0, __size=248, __this_module={3266:3265}, calloc(1UL, __size)={-36893488147419103232:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, p={-36893488147419103232:0}, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}] [L5264] return p; [L5978] RET, EXPR ldv_successful_zalloc(sizeof(struct sk_buff___0 )) VAL [\old(last_index)=0, __this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_successful_zalloc(sizeof(struct sk_buff___0 ))={-36893488147419103232:0}, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}] [L5978] tmp___7 = ldv_successful_zalloc(sizeof(struct sk_buff___0 )) [L5979] skb = (struct sk_buff___0 *)tmp___7 VAL [\old(last_index)=0, __this_module={3266:3265}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}, skb={-36893488147419103232:0}, tmp___7={-36893488147419103232:0}] [L5980] COND FALSE !(! skb) [L5983] CALL ldv_set_add(LDV_SKBS, skb) [L5851] int i ; [L5853] i = 0 VAL [\old(last_index)=0, __this_module={3266:3265}, e={-36893488147419103232:0}, e={-36893488147419103232:0}, i=0, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={7:0}] [L5854] COND TRUE 1 VAL [\old(last_index)=0, __this_module={3266:3265}, e={-36893488147419103232:0}, e={-36893488147419103232:0}, i=0, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={7:0}] [L5855] COND FALSE !(i < last_index) VAL [\old(last_index)=0, __this_module={3266:3265}, e={-36893488147419103232:0}, e={-36893488147419103232:0}, i=0, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={7:0}] [L5865] COND TRUE last_index < 15 [L5866] set_impl[last_index] = e [L5867] last_index = last_index + 1 VAL [\old(last_index)=0, __this_module={3266:3265}, e={-36893488147419103232:0}, e={-36893488147419103232:0}, i=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={7:0}] [L5983] RET ldv_set_add(LDV_SKBS, skb) [L5984] return (skb); VAL [\old(last_index)=0, \result={-36893488147419103232:0}, __this_module={3266:3265}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}, skb={-36893488147419103232:0}, tmp___7={-36893488147419103232:0}] [L5816] RET, EXPR ldv_skb_alloc() VAL [\old(last_index)=0, \old(length)=1, __this_module={3266:3265}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_skb_alloc()={-36893488147419103232:0}, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, length=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}] [L5816] tmp = ldv_skb_alloc() [L5817] return (tmp); [L5412] RET, EXPR ldv_dev_alloc_skb_12(1U) [L5412] skb = ldv_dev_alloc_skb_12(1U) [L5413] COND TRUE (unsigned long )skb == (unsigned long )((struct sk_buff *)0) [L5428] RET x25_connect_disconnect(dev, reason, 1) VAL [\old(last_index)=0, \old(reason)=0, __this_module={3266:3265}, dev={-3:0}, dev={-3:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, reason=0, ref_cnt=0, set_impl={7:0}] [L5488] RET x25_connected(dev, 0) [L5512] CALL ldv_skb_free(skb) VAL [\old(last_index)=1, __this_module={3266:3265}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}, skb={-18446744073709551615:0}] [L5998] CALL ldv_set_remove(LDV_SKBS, skb) VAL [\old(last_index)=1, __this_module={3266:3265}, e={-18446744073709551615:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set_impl={7:0}] [L5876] int i ; [L5877] int deleted_index ; [L5879] deleted_index = -1 [L5880] i = 0 VAL [\old(last_index)=1, __this_module={3266:3265}, deleted_index=-1, e={-18446744073709551615:0}, e={-18446744073709551615:0}, i=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={7:0}] [L5881] COND TRUE 1 VAL [\old(last_index)=1, __this_module={3266:3265}, deleted_index=-1, e={-18446744073709551615:0}, e={-18446744073709551615:0}, i=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={7:0}] [L5882] COND TRUE i < last_index [L5886] EXPR set_impl[i] VAL [\old(last_index)=1, __this_module={3266:3265}, deleted_index=-1, e={-18446744073709551615:0}, e={-18446744073709551615:0}, i=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={7:0}, set_impl[i]={-36893488147419103232:0}] [L5886] COND FALSE !((unsigned long )set_impl[i] == (unsigned long )e) [L5891] i = i + 1 VAL [\old(last_index)=1, __this_module={3266:3265}, deleted_index=-1, e={-18446744073709551615:0}, e={-18446744073709551615:0}, i=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={7:0}] [L5881] COND TRUE 1 VAL [\old(last_index)=1, __this_module={3266:3265}, deleted_index=-1, e={-18446744073709551615:0}, e={-18446744073709551615:0}, i=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={7:0}] [L5882] COND FALSE !(i < last_index) VAL [\old(last_index)=1, __this_module={3266:3265}, deleted_index=-1, e={-18446744073709551615:0}, e={-18446744073709551615:0}, i=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={7:0}] [L5893] COND FALSE !(deleted_index != -1) VAL [\old(last_index)=1, __this_module={3266:3265}, deleted_index=-1, e={-18446744073709551615:0}, e={-18446744073709551615:0}, i=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={7:0}] [L5998] RET ldv_set_remove(LDV_SKBS, skb) VAL [\old(last_index)=1, __this_module={3266:3265}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}, skb={-18446744073709551615:0}, skb={-18446744073709551615:0}] [L5512] RET ldv_skb_free(skb) VAL [\old(last_index)=0, __this_module={3266:3265}, dev={-3:0}, dev={-3:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, result=3, set_impl={7:0}, skb={-18446744073709551615:0}, skb={-18446744073709551615:0}, skb->data=257skb->data={3268:0}] [L5513] return (0); VAL [\old(last_index)=0, \result=0, __this_module={3266:3265}, dev={-3:0}, dev={-3:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, result=3, set_impl={7:0}, skb={-18446744073709551615:0}, skb={-18446744073709551615:0}, skb->data={3268:0}skb->data=257] [L5672] RET x25_xmit(proto_group0, proto_group1) VAL [__this_module={3266:3265}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldvarg0={-2:0}, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}, tmp={-2:0}, tmp___0=0, tmp___1=0, tmp___2=1, x25_xmit(proto_group0, proto_group1)=0] [L5673] ldv_state_variable_1 = 1 VAL [__this_module={3266:3265}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldvarg0={-2:0}, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}, tmp={-2:0}, tmp___0=0, tmp___1=0, tmp___2=1] [L5676] COND FALSE !(ldv_state_variable_1 == 2) VAL [__this_module={3266:3265}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldvarg0={-2:0}, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}, tmp={-2:0}, tmp___0=0, tmp___1=0, tmp___2=1] [L5664] tmp___0 = __VERIFIER_nondet_int() [L5666] case 0: [L5731] case 1: VAL [__this_module={3266:3265}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldvarg0={-2:0}, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}, tmp={-2:0}, tmp___0=1, tmp___1=0, tmp___2=1] [L5732] COND TRUE ldv_state_variable_0 != 0 [L5733] tmp___2 = __VERIFIER_nondet_int() [L5735] case 0: VAL [__this_module={3266:3265}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldvarg0={-2:0}, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}, tmp={-2:0}, tmp___0=1, tmp___1=0, tmp___2=0] [L5736] COND TRUE ldv_state_variable_0 == 3 && ref_cnt == 0 [L5737] CALL mod_exit() [L5629] FCALL unregister_hdlc_protocol(& proto) [L5737] RET mod_exit() [L5738] ldv_state_variable_0 = 2 VAL [__this_module={3266:3265}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=2, ldv_state_variable_1=1, ldvarg0={-2:0}, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}, tmp={-2:0}, tmp___0=1, tmp___1=0, tmp___2=0] [L5773] CALL ldv_check_final_state() [L6042] int tmp___7 ; [L6044] CALL, EXPR ldv_set_is_empty(LDV_SKBS) [L5933] return (last_index == 0); [L6044] RET, EXPR ldv_set_is_empty(LDV_SKBS) [L6044] tmp___7 = ldv_set_is_empty(LDV_SKBS) [L6045] COND FALSE !(\read(tmp___7)) VAL [__this_module={3266:3265}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=2, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}, tmp___7=0] [L6047] CALL ldv_error() VAL [__this_module={3266:3265}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=2, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}] [L5320] reach_error() VAL [__this_module={3266:3265}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=2, ldv_state_variable_1=1, proto={8:0}, proto_group0={-18446744073709551615:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={7:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 18 procedures, 168 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.1s, OverallIterations: 9, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1664 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1614 mSDsluCounter, 4711 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2993 mSDsCounter, 494 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2400 IncrementalHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 494 mSolverCounterUnsat, 1718 mSDtfsCounter, 2400 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1456occurred in iteration=8, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 770 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 774 NumberOfCodeBlocks, 774 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 644 ConstructedInterpolants, 0 QuantifiedInterpolants, 1102 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 341/341 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-19 07:49:59,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc0fa5f-57d9-45ca-b7b3-57d4b7acd1d0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE