./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c6d3c-822f-4ae6-8e14-56228b496ace/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c6d3c-822f-4ae6-8e14-56228b496ace/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c6d3c-822f-4ae6-8e14-56228b496ace/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c6d3c-822f-4ae6-8e14-56228b496ace/bin/uautomizer-DrprNOufMa/config/AutomizerReach.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_994c6d3c-822f-4ae6-8e14-56228b496ace/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c6d3c-822f-4ae6-8e14-56228b496ace/bin/uautomizer-DrprNOufMa --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9ca2eb28b930065096f039703bc8c545a25de7919cc90a3441476b4fab43b08c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:20:09,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:20:09,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:20:10,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:20:10,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:20:10,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:20:10,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:20:10,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:20:10,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:20:10,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:20:10,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:20:10,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:20:10,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:20:10,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:20:10,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:20:10,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:20:10,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:20:10,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:20:10,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:20:10,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:20:10,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:20:10,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:20:10,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:20:10,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:20:10,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:20:10,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:20:10,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:20:10,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:20:10,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:20:10,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:20:10,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:20:10,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:20:10,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:20:10,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:20:10,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:20:10,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:20:10,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:20:10,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:20:10,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:20:10,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:20:10,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:20:10,061 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c6d3c-822f-4ae6-8e14-56228b496ace/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 17:20:10,085 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:20:10,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:20:10,085 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:20:10,085 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:20:10,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:20:10,086 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:20:10,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:20:10,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:20:10,087 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:20:10,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:20:10,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:20:10,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:20:10,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:20:10,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:20:10,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:20:10,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:20:10,089 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:20:10,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:20:10,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:20:10,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:20:10,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:20:10,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:20:10,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:20:10,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:20:10,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:20:10,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:20:10,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:20:10,090 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:20:10,090 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:20:10,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:20:10,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:20:10,091 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_994c6d3c-822f-4ae6-8e14-56228b496ace/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c6d3c-822f-4ae6-8e14-56228b496ace/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ca2eb28b930065096f039703bc8c545a25de7919cc90a3441476b4fab43b08c [2021-12-06 17:20:10,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:20:10,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:20:10,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:20:10,298 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:20:10,299 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:20:10,300 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c6d3c-822f-4ae6-8e14-56228b496ace/bin/uautomizer-DrprNOufMa/../../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 [2021-12-06 17:20:10,347 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c6d3c-822f-4ae6-8e14-56228b496ace/bin/uautomizer-DrprNOufMa/data/2ed78c0e8/c218f0294dc44e67800f4c5a0a0833a9/FLAG994af3cbf [2021-12-06 17:20:10,888 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:20:10,889 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c6d3c-822f-4ae6-8e14-56228b496ace/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 [2021-12-06 17:20:10,913 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c6d3c-822f-4ae6-8e14-56228b496ace/bin/uautomizer-DrprNOufMa/data/2ed78c0e8/c218f0294dc44e67800f4c5a0a0833a9/FLAG994af3cbf [2021-12-06 17:20:11,324 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c6d3c-822f-4ae6-8e14-56228b496ace/bin/uautomizer-DrprNOufMa/data/2ed78c0e8/c218f0294dc44e67800f4c5a0a0833a9 [2021-12-06 17:20:11,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:20:11,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:20:11,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:20:11,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:20:11,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:20:11,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:20:11" (1/1) ... [2021-12-06 17:20:11,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43c8cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:11, skipping insertion in model container [2021-12-06 17:20:11,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:20:11" (1/1) ... [2021-12-06 17:20:11,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:20:11,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:20:11,827 WARN L230 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_994c6d3c-822f-4ae6-8e14-56228b496ace/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] [2021-12-06 17:20:12,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:20:12,043 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:20:12,123 WARN L230 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_994c6d3c-822f-4ae6-8e14-56228b496ace/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] [2021-12-06 17:20:12,166 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:20:12,189 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:20:12,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:12 WrapperNode [2021-12-06 17:20:12,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:20:12,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:20:12,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:20:12,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:20:12,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:12" (1/1) ... [2021-12-06 17:20:12,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:12" (1/1) ... [2021-12-06 17:20:12,266 INFO L137 Inliner]: procedures = 110, calls = 180, calls flagged for inlining = 54, calls inlined = 43, statements flattened = 631 [2021-12-06 17:20:12,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:20:12,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:20:12,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:20:12,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:20:12,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:12" (1/1) ... [2021-12-06 17:20:12,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:12" (1/1) ... [2021-12-06 17:20:12,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:12" (1/1) ... [2021-12-06 17:20:12,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:12" (1/1) ... [2021-12-06 17:20:12,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:12" (1/1) ... [2021-12-06 17:20:12,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:12" (1/1) ... [2021-12-06 17:20:12,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:12" (1/1) ... [2021-12-06 17:20:12,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:20:12,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:20:12,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:20:12,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:20:12,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:12" (1/1) ... [2021-12-06 17:20:12,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:20:12,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c6d3c-822f-4ae6-8e14-56228b496ace/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:20:12,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c6d3c-822f-4ae6-8e14-56228b496ace/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:20:12,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c6d3c-822f-4ae6-8e14-56228b496ace/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:20:12,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-06 17:20:12,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-06 17:20:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 17:20:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-06 17:20:12,395 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-06 17:20:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2021-12-06 17:20:12,395 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2021-12-06 17:20:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-12-06 17:20:12,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-12-06 17:20:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 17:20:12,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 17:20:12,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-06 17:20:12,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-06 17:20:12,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 17:20:12,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 17:20:12,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 17:20:12,396 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2021-12-06 17:20:12,396 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2021-12-06 17:20:12,396 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-06 17:20:12,396 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-06 17:20:12,396 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 17:20:12,396 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 17:20:12,397 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2021-12-06 17:20:12,397 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2021-12-06 17:20:12,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 17:20:12,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2021-12-06 17:20:12,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2021-12-06 17:20:12,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:20:12,397 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2021-12-06 17:20:12,397 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2021-12-06 17:20:12,397 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2021-12-06 17:20:12,397 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2021-12-06 17:20:12,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 17:20:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 17:20:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 17:20:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-12-06 17:20:12,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-12-06 17:20:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 17:20:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 17:20:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2021-12-06 17:20:12,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2021-12-06 17:20:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2021-12-06 17:20:12,398 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2021-12-06 17:20:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:20:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:20:12,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:20:12,573 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:20:12,575 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:20:12,752 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-06 17:20:12,933 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:20:12,939 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:20:12,940 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-06 17:20:12,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:20:12 BoogieIcfgContainer [2021-12-06 17:20:12,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:20:12,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:20:12,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:20:12,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:20:12,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:20:11" (1/3) ... [2021-12-06 17:20:12,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41febf1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:20:12, skipping insertion in model container [2021-12-06 17:20:12,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:12" (2/3) ... [2021-12-06 17:20:12,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41febf1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:20:12, skipping insertion in model container [2021-12-06 17:20:12,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:20:12" (3/3) ... [2021-12-06 17:20:12,947 INFO L111 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 [2021-12-06 17:20:12,951 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:20:12,951 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 17:20:12,988 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:20:12,993 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 17:20:12,993 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 17:20:13,010 INFO L276 IsEmpty]: Start isEmpty. Operand has 237 states, 184 states have (on average 1.3804347826086956) internal successors, (254), 190 states have internal predecessors, (254), 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) [2021-12-06 17:20:13,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 17:20:13,015 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:13,016 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:20:13,016 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:20:13,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:13,020 INFO L85 PathProgramCache]: Analyzing trace with hash 898254007, now seen corresponding path program 1 times [2021-12-06 17:20:13,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:20:13,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656905842] [2021-12-06 17:20:13,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:13,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:20:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:13,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:20:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:13,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:13,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:20:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:13,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:20:13,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:20:13,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656905842] [2021-12-06 17:20:13,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656905842] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:20:13,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:20:13,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:20:13,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134630183] [2021-12-06 17:20:13,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:20:13,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:20:13,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:20:13,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:20:13,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:20:13,318 INFO L87 Difference]: Start difference. First operand has 237 states, 184 states have (on average 1.3804347826086956) internal successors, (254), 190 states have internal predecessors, (254), 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 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 17:20:13,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:13,819 INFO L93 Difference]: Finished difference Result 786 states and 1141 transitions. [2021-12-06 17:20:13,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:20:13,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 4 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 33 [2021-12-06 17:20:13,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:13,835 INFO L225 Difference]: With dead ends: 786 [2021-12-06 17:20:13,835 INFO L226 Difference]: Without dead ends: 540 [2021-12-06 17:20:13,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:20:13,842 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 752 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:13,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 711 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 17:20:13,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-12-06 17:20:13,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 432. [2021-12-06 17:20:13,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 341 states have (on average 1.3284457478005864) internal successors, (453), 343 states have internal predecessors, (453), 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) [2021-12-06 17:20:13,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 572 transitions. [2021-12-06 17:20:13,914 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 572 transitions. Word has length 33 [2021-12-06 17:20:13,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:13,915 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 572 transitions. [2021-12-06 17:20:13,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 17:20:13,915 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 572 transitions. [2021-12-06 17:20:13,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 17:20:13,917 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:13,917 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:20:13,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:20:13,917 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:20:13,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:13,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1941540429, now seen corresponding path program 1 times [2021-12-06 17:20:13,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:20:13,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662014717] [2021-12-06 17:20:13,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:13,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:20:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:13,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:20:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:13,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:14,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:20:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:14,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:20:14,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:20:14,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662014717] [2021-12-06 17:20:14,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662014717] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:20:14,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:20:14,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 17:20:14,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669746038] [2021-12-06 17:20:14,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:20:14,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:20:14,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:20:14,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:20:14,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:20:14,011 INFO L87 Difference]: Start difference. First operand 432 states and 572 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 17:20:14,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:14,302 INFO L93 Difference]: Finished difference Result 965 states and 1293 transitions. [2021-12-06 17:20:14,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:20:14,302 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 4 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 36 [2021-12-06 17:20:14,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:14,308 INFO L225 Difference]: With dead ends: 965 [2021-12-06 17:20:14,308 INFO L226 Difference]: Without dead ends: 539 [2021-12-06 17:20:14,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:20:14,312 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 612 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:14,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 755 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:20:14,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-12-06 17:20:14,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 431. [2021-12-06 17:20:14,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 340 states have (on average 1.3205882352941176) internal successors, (449), 342 states have internal predecessors, (449), 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) [2021-12-06 17:20:14,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 568 transitions. [2021-12-06 17:20:14,365 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 568 transitions. Word has length 36 [2021-12-06 17:20:14,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:14,366 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 568 transitions. [2021-12-06 17:20:14,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 17:20:14,366 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 568 transitions. [2021-12-06 17:20:14,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-06 17:20:14,371 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:14,372 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:20:14,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 17:20:14,372 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:20:14,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:14,373 INFO L85 PathProgramCache]: Analyzing trace with hash 2029658452, now seen corresponding path program 1 times [2021-12-06 17:20:14,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:20:14,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270065026] [2021-12-06 17:20:14,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:14,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:20:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:14,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:20:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:14,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:14,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:20:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:14,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 17:20:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:14,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:14,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:20:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:14,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 17:20:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:14,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:14,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:20:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:14,568 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-06 17:20:14,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:20:14,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270065026] [2021-12-06 17:20:14,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270065026] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:20:14,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:20:14,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:20:14,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127638416] [2021-12-06 17:20:14,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:20:14,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:20:14,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:20:14,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:20:14,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:20:14,570 INFO L87 Difference]: Start difference. First operand 431 states and 568 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:20:15,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:15,063 INFO L93 Difference]: Finished difference Result 1462 states and 2036 transitions. [2021-12-06 17:20:15,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:20:15,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 77 [2021-12-06 17:20:15,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:15,070 INFO L225 Difference]: With dead ends: 1462 [2021-12-06 17:20:15,070 INFO L226 Difference]: Without dead ends: 1032 [2021-12-06 17:20:15,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:20:15,073 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 504 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:15,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 1330 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 17:20:15,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2021-12-06 17:20:15,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 840. [2021-12-06 17:20:15,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 661 states have (on average 1.3222390317700454) internal successors, (874), 665 states have internal predecessors, (874), 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) [2021-12-06 17:20:15,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1137 transitions. [2021-12-06 17:20:15,120 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1137 transitions. Word has length 77 [2021-12-06 17:20:15,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:15,121 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 1137 transitions. [2021-12-06 17:20:15,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:20:15,121 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1137 transitions. [2021-12-06 17:20:15,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-06 17:20:15,127 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:15,127 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 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, 1, 1, 1, 1] [2021-12-06 17:20:15,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 17:20:15,128 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:20:15,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:15,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1596249494, now seen corresponding path program 1 times [2021-12-06 17:20:15,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:20:15,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714909863] [2021-12-06 17:20:15,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:15,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:20:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:15,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:20:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:15,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:15,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:20:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:15,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 17:20:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:15,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:15,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:20:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:15,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 17:20:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:15,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:15,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:20:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:15,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 17:20:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:15,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:15,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:20:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:15,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:20:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:15,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:15,306 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-12-06 17:20:15,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:20:15,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714909863] [2021-12-06 17:20:15,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714909863] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:20:15,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:20:15,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:20:15,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227433174] [2021-12-06 17:20:15,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:20:15,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:20:15,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:20:15,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:20:15,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:20:15,308 INFO L87 Difference]: Start difference. First operand 840 states and 1137 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 17:20:16,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:16,019 INFO L93 Difference]: Finished difference Result 2912 states and 3997 transitions. [2021-12-06 17:20:16,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 17:20:16,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 119 [2021-12-06 17:20:16,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:16,034 INFO L225 Difference]: With dead ends: 2912 [2021-12-06 17:20:16,034 INFO L226 Difference]: Without dead ends: 2078 [2021-12-06 17:20:16,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:20:16,039 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 578 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:16,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [591 Valid, 1167 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 17:20:16,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2021-12-06 17:20:16,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 1662. [2021-12-06 17:20:16,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1311 states have (on average 1.297482837528604) internal successors, (1701), 1319 states have internal predecessors, (1701), 210 states have call successors, (210), 121 states have call predecessors, (210), 140 states have return successors, (297), 229 states have call predecessors, (297), 209 states have call successors, (297) [2021-12-06 17:20:16,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2208 transitions. [2021-12-06 17:20:16,130 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2208 transitions. Word has length 119 [2021-12-06 17:20:16,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:16,131 INFO L470 AbstractCegarLoop]: Abstraction has 1662 states and 2208 transitions. [2021-12-06 17:20:16,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 17:20:16,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2208 transitions. [2021-12-06 17:20:16,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-06 17:20:16,136 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:16,136 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 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, 1, 1, 1, 1] [2021-12-06 17:20:16,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 17:20:16,136 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:20:16,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:16,137 INFO L85 PathProgramCache]: Analyzing trace with hash 162596766, now seen corresponding path program 1 times [2021-12-06 17:20:16,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:20:16,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109670913] [2021-12-06 17:20:16,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:16,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:20:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:20:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:20:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 17:20:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:20:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 17:20:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:20:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:20:16,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:20:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:20:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,290 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-06 17:20:16,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:20:16,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109670913] [2021-12-06 17:20:16,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109670913] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:20:16,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:20:16,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:20:16,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394328548] [2021-12-06 17:20:16,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:20:16,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:20:16,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:20:16,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:20:16,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:20:16,292 INFO L87 Difference]: Start difference. First operand 1662 states and 2208 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-06 17:20:16,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:16,698 INFO L93 Difference]: Finished difference Result 2954 states and 4105 transitions. [2021-12-06 17:20:16,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:20:16,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 119 [2021-12-06 17:20:16,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:16,718 INFO L225 Difference]: With dead ends: 2954 [2021-12-06 17:20:16,718 INFO L226 Difference]: Without dead ends: 2070 [2021-12-06 17:20:16,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:20:16,721 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 163 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:16,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 1036 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 17:20:16,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2021-12-06 17:20:16,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 1670. [2021-12-06 17:20:16,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1670 states, 1319 states have (on average 1.2956785443517818) internal successors, (1709), 1327 states have internal predecessors, (1709), 210 states have call successors, (210), 121 states have call predecessors, (210), 140 states have return successors, (297), 229 states have call predecessors, (297), 209 states have call successors, (297) [2021-12-06 17:20:16,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2216 transitions. [2021-12-06 17:20:16,799 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2216 transitions. Word has length 119 [2021-12-06 17:20:16,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:16,800 INFO L470 AbstractCegarLoop]: Abstraction has 1670 states and 2216 transitions. [2021-12-06 17:20:16,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-06 17:20:16,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2216 transitions. [2021-12-06 17:20:16,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 17:20:16,804 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:16,804 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:20:16,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 17:20:16,804 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:20:16,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:16,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1319541292, now seen corresponding path program 1 times [2021-12-06 17:20:16,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:20:16,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940117107] [2021-12-06 17:20:16,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:16,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:20:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:20:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:20:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 17:20:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:20:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 17:20:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:20:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:20:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:20:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:16,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:20:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:17,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 17:20:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:17,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:17,069 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-06 17:20:17,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:20:17,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940117107] [2021-12-06 17:20:17,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940117107] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:20:17,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:20:17,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 17:20:17,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312990022] [2021-12-06 17:20:17,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:20:17,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 17:20:17,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:20:17,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 17:20:17,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:20:17,072 INFO L87 Difference]: Start difference. First operand 1670 states and 2216 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 17:20:18,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:18,125 INFO L93 Difference]: Finished difference Result 4250 states and 5733 transitions. [2021-12-06 17:20:18,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 17:20:18,126 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 3 states have call successors, (11) Word has length 127 [2021-12-06 17:20:18,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:18,137 INFO L225 Difference]: With dead ends: 4250 [2021-12-06 17:20:18,137 INFO L226 Difference]: Without dead ends: 2586 [2021-12-06 17:20:18,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2021-12-06 17:20:18,143 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 1427 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 632 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 2095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 632 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:18,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1444 Valid, 1706 Invalid, 2095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [632 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 17:20:18,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2586 states. [2021-12-06 17:20:18,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2586 to 1698. [2021-12-06 17:20:18,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 1335 states have (on average 1.2831460674157302) internal successors, (1713), 1347 states have internal predecessors, (1713), 222 states have call successors, (222), 125 states have call predecessors, (222), 140 states have return successors, (257), 233 states have call predecessors, (257), 221 states have call successors, (257) [2021-12-06 17:20:18,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2192 transitions. [2021-12-06 17:20:18,229 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2192 transitions. Word has length 127 [2021-12-06 17:20:18,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:18,229 INFO L470 AbstractCegarLoop]: Abstraction has 1698 states and 2192 transitions. [2021-12-06 17:20:18,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 17:20:18,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2192 transitions. [2021-12-06 17:20:18,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 17:20:18,234 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:18,234 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:20:18,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 17:20:18,234 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:20:18,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:18,234 INFO L85 PathProgramCache]: Analyzing trace with hash -239915446, now seen corresponding path program 1 times [2021-12-06 17:20:18,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:20:18,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281883559] [2021-12-06 17:20:18,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:18,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:20:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:18,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:20:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:18,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:18,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:20:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:18,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 17:20:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:18,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:18,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:20:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:18,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 17:20:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:18,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:18,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:20:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:18,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:20:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:18,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:18,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:20:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:18,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:20:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:18,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:18,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:18,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:18,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:20:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:18,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 17:20:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:18,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:18,499 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-12-06 17:20:18,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:20:18,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281883559] [2021-12-06 17:20:18,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281883559] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:20:18,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:20:18,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 17:20:18,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139698060] [2021-12-06 17:20:18,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:20:18,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 17:20:18,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:20:18,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 17:20:18,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:20:18,500 INFO L87 Difference]: Start difference. First operand 1698 states and 2192 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 9 states have internal predecessors, (78), 5 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 8 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 17:20:20,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:20,020 INFO L93 Difference]: Finished difference Result 4534 states and 6177 transitions. [2021-12-06 17:20:20,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-06 17:20:20,021 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 9 states have internal predecessors, (78), 5 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 8 states have call predecessors, (13), 4 states have call successors, (13) Word has length 151 [2021-12-06 17:20:20,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:20,043 INFO L225 Difference]: With dead ends: 4534 [2021-12-06 17:20:20,044 INFO L226 Difference]: Without dead ends: 3606 [2021-12-06 17:20:20,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=272, Invalid=988, Unknown=0, NotChecked=0, Total=1260 [2021-12-06 17:20:20,050 INFO L933 BasicCegarLoop]: 517 mSDtfsCounter, 2065 mSDsluCounter, 2049 mSDsCounter, 0 mSdLazyCounter, 2218 mSolverCounterSat, 1033 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2103 SdHoareTripleChecker+Valid, 2566 SdHoareTripleChecker+Invalid, 3251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1033 IncrementalHoareTripleChecker+Valid, 2218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:20,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2103 Valid, 2566 Invalid, 3251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1033 Valid, 2218 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 17:20:20,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3606 states. [2021-12-06 17:20:20,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3606 to 2234. [2021-12-06 17:20:20,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2234 states, 1731 states have (on average 1.2576545349508954) internal successors, (2177), 1755 states have internal predecessors, (2177), 266 states have call successors, (266), 153 states have call predecessors, (266), 236 states have return successors, (429), 333 states have call predecessors, (429), 265 states have call successors, (429) [2021-12-06 17:20:20,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2234 states to 2234 states and 2872 transitions. [2021-12-06 17:20:20,190 INFO L78 Accepts]: Start accepts. Automaton has 2234 states and 2872 transitions. Word has length 151 [2021-12-06 17:20:20,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:20,191 INFO L470 AbstractCegarLoop]: Abstraction has 2234 states and 2872 transitions. [2021-12-06 17:20:20,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 9 states have internal predecessors, (78), 5 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 8 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 17:20:20,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2234 states and 2872 transitions. [2021-12-06 17:20:20,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-06 17:20:20,196 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:20,196 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:20:20,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 17:20:20,196 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:20:20,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:20,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1665675225, now seen corresponding path program 1 times [2021-12-06 17:20:20,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:20:20,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570340856] [2021-12-06 17:20:20,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:20,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:20:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:20,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:20:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:20,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:20,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:20:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:20,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 17:20:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:20,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:20,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:20:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:20,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 17:20:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:20,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:20,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:20:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:20,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:20:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:20,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:20,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:20:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:20,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:20:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:20,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:20,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:20,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:20,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:20:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:20,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:20:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:20,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:20:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:20,368 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-12-06 17:20:20,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:20:20,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570340856] [2021-12-06 17:20:20,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570340856] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:20:20,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:20:20,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 17:20:20,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265802491] [2021-12-06 17:20:20,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:20:20,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:20:20,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:20:20,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:20:20,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:20:20,370 INFO L87 Difference]: Start difference. First operand 2234 states and 2872 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-06 17:20:20,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:20,802 INFO L93 Difference]: Finished difference Result 4214 states and 5577 transitions. [2021-12-06 17:20:20,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:20:20,802 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (14), 6 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 152 [2021-12-06 17:20:20,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:20,814 INFO L225 Difference]: With dead ends: 4214 [2021-12-06 17:20:20,814 INFO L226 Difference]: Without dead ends: 2818 [2021-12-06 17:20:20,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:20:20,818 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 282 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:20,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 1101 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 17:20:20,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2021-12-06 17:20:20,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 2234. [2021-12-06 17:20:20,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2234 states, 1731 states have (on average 1.2484113229347198) internal successors, (2161), 1755 states have internal predecessors, (2161), 266 states have call successors, (266), 153 states have call predecessors, (266), 236 states have return successors, (429), 333 states have call predecessors, (429), 265 states have call successors, (429) [2021-12-06 17:20:20,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2234 states to 2234 states and 2856 transitions. [2021-12-06 17:20:20,930 INFO L78 Accepts]: Start accepts. Automaton has 2234 states and 2856 transitions. Word has length 152 [2021-12-06 17:20:20,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:20,930 INFO L470 AbstractCegarLoop]: Abstraction has 2234 states and 2856 transitions. [2021-12-06 17:20:20,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-06 17:20:20,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2234 states and 2856 transitions. [2021-12-06 17:20:20,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-06 17:20:20,935 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:20,935 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:20:20,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 17:20:20,935 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:20:20,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:20,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1648213824, now seen corresponding path program 1 times [2021-12-06 17:20:20,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:20:20,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768088291] [2021-12-06 17:20:20,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:20,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:20:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 17:20:20,992 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 17:20:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 17:20:21,101 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 17:20:21,102 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 17:20:21,102 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 17:20:21,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 17:20:21,106 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:20:21,109 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 17:20:21,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 05:20:21 BoogieIcfgContainer [2021-12-06 17:20:21,199 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 17:20:21,200 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 17:20:21,200 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 17:20:21,200 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 17:20:21,200 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:20:12" (3/4) ... [2021-12-06 17:20:21,201 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 17:20:21,279 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c6d3c-822f-4ae6-8e14-56228b496ace/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 17:20:21,279 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 17:20:21,279 INFO L158 Benchmark]: Toolchain (without parser) took 9952.20ms. Allocated memory was 104.9MB in the beginning and 262.1MB in the end (delta: 157.3MB). Free memory was 80.1MB in the beginning and 113.3MB in the end (delta: -33.2MB). Peak memory consumption was 125.2MB. Max. memory is 16.1GB. [2021-12-06 17:20:21,280 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 104.9MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:20:21,280 INFO L158 Benchmark]: CACSL2BoogieTranslator took 862.30ms. Allocated memory was 104.9MB in the beginning and 148.9MB in the end (delta: 44.0MB). Free memory was 79.7MB in the beginning and 100.0MB in the end (delta: -20.3MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. [2021-12-06 17:20:21,280 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.41ms. Allocated memory is still 148.9MB. Free memory was 100.0MB in the beginning and 95.3MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-06 17:20:21,280 INFO L158 Benchmark]: Boogie Preprocessor took 66.91ms. Allocated memory is still 148.9MB. Free memory was 95.3MB in the beginning and 90.4MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-06 17:20:21,281 INFO L158 Benchmark]: RCFGBuilder took 607.28ms. Allocated memory is still 148.9MB. Free memory was 90.4MB in the beginning and 88.5MB in the end (delta: 1.9MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. [2021-12-06 17:20:21,281 INFO L158 Benchmark]: TraceAbstraction took 8256.77ms. Allocated memory was 148.9MB in the beginning and 262.1MB in the end (delta: 113.2MB). Free memory was 88.5MB in the beginning and 135.3MB in the end (delta: -46.8MB). Peak memory consumption was 65.9MB. Max. memory is 16.1GB. [2021-12-06 17:20:21,281 INFO L158 Benchmark]: Witness Printer took 79.19ms. Allocated memory is still 262.1MB. Free memory was 135.3MB in the beginning and 113.3MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-06 17:20:21,283 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 104.9MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 862.30ms. Allocated memory was 104.9MB in the beginning and 148.9MB in the end (delta: 44.0MB). Free memory was 79.7MB in the beginning and 100.0MB in the end (delta: -20.3MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.41ms. Allocated memory is still 148.9MB. Free memory was 100.0MB in the beginning and 95.3MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.91ms. Allocated memory is still 148.9MB. Free memory was 95.3MB in the beginning and 90.4MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 607.28ms. Allocated memory is still 148.9MB. Free memory was 90.4MB in the beginning and 88.5MB in the end (delta: 1.9MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. * TraceAbstraction took 8256.77ms. Allocated memory was 148.9MB in the beginning and 262.1MB in the end (delta: 113.2MB). Free memory was 88.5MB in the beginning and 135.3MB in the end (delta: -46.8MB). Peak memory consumption was 65.9MB. Max. memory is 16.1GB. * Witness Printer took 79.19ms. Allocated memory is still 262.1MB. Free memory was 135.3MB in the beginning and 113.3MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. 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: [L5343] int LDV_IN_INTERRUPT = 1; [L5344] struct sk_buff *proto_group0 ; [L5345] int ref_cnt ; [L5346] int ldv_state_variable_1 ; [L5347] struct net_device *proto_group1 ; [L5348] int ldv_state_variable_0 ; [L5564-L5566] static struct hdlc_proto proto = {& x25_open, & x25_close, 0, 0, 0, & x25_ioctl, 0, & x25_rx, & x25_xmit, & __this_module, 0}; [L5633] int ldv_retval_0 ; [L5634] int ldv_retval_1 ; [L5837] Element set_impl[15] ; [L5838] int last_index = 0; [L5972] Set LDV_SKBS ; VAL [__this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5651] struct ifreq *ldvarg0 ; [L5652] void *tmp ; [L5653] int tmp___0 ; [L5654] int tmp___1 ; [L5655] int tmp___2 ; VAL [__this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5657] CALL, EXPR ldv_successful_zalloc(40UL) VAL [\old(__size)=40, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5262] EXPR, FCALL calloc(1UL, __size) VAL [\old(__size)=40, __size=40, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5262] void *p = calloc(1UL, __size); VAL [\old(__size)=40, __size=40, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5263] CALL assume_abort_if_not(p != (void *)0) VAL [\old(cond)=1, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5259] COND FALSE !(!cond) VAL [\old(cond)=1, __this_module={18446744073709551621:18446744073709551620}, cond=1, 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={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5263] RET assume_abort_if_not(p != (void *)0) VAL [\old(__size)=40, __size=40, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5264] return p; VAL [\old(__size)=40, \result={-2:0}, __size=40, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5657] RET, EXPR ldv_successful_zalloc(40UL) VAL [__this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [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 VAL [__this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set={8:0}, set={0:0}, set_impl={8:0}] [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={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}, tmp={-2:0}] [L5664] tmp___0 = __VERIFIER_nondet_int() [L5666] case 0: [L5731] case 1: VAL [__this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}, 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={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}, 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); VAL [\result=0, __this_module={18446744073709551621:18446744073709551620}, 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, proto={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [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={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5642] CALL, EXPR ldv_successful_zalloc(3264UL) VAL [\old(__size)=3264, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5262] EXPR, FCALL calloc(1UL, __size) VAL [\old(__size)=3264, __size=3264, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5262] void *p = calloc(1UL, __size); VAL [\old(__size)=3264, __size=3264, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5263] CALL assume_abort_if_not(p != (void *)0) VAL [\old(cond)=1, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5259] COND FALSE !(!cond) VAL [\old(cond)=1, __this_module={18446744073709551621:18446744073709551620}, cond=1, 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={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5263] RET assume_abort_if_not(p != (void *)0) VAL [\old(__size)=3264, __size=3264, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5264] return p; VAL [\old(__size)=3264, \result={-3:0}, __size=3264, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5642] RET, EXPR ldv_successful_zalloc(3264UL) VAL [__this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5642] tmp = ldv_successful_zalloc(3264UL) [L5643] proto_group1 = (struct net_device *)tmp VAL [__this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={0:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, tmp={-3:0}] [L5644] CALL, EXPR ldv_successful_zalloc(232UL) VAL [\old(__size)=232, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={0:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5262] EXPR, FCALL calloc(1UL, __size) VAL [\old(__size)=232, __size=232, __this_module={18446744073709551621:18446744073709551620}, calloc(1UL, __size)={18446744073709551617:0}, 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={7:0}, proto_group0={0:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5262] void *p = calloc(1UL, __size); VAL [\old(__size)=232, __size=232, __this_module={18446744073709551621:18446744073709551620}, calloc(1UL, __size)={18446744073709551617:0}, 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={18446744073709551617:0}, proto={7:0}, proto_group0={0:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5263] CALL assume_abort_if_not(p != (void *)0) VAL [\old(cond)=1, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={0:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5259] COND FALSE !(!cond) VAL [\old(cond)=1, __this_module={18446744073709551621:18446744073709551620}, cond=1, 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={7:0}, proto_group0={0:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5263] RET assume_abort_if_not(p != (void *)0) VAL [\old(__size)=232, __size=232, __this_module={18446744073709551621:18446744073709551620}, calloc(1UL, __size)={18446744073709551617:0}, 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={18446744073709551617:0}, proto={7:0}, proto_group0={0:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5264] return p; VAL [\old(__size)=232, \result={18446744073709551617:0}, __size=232, __this_module={18446744073709551621:18446744073709551620}, calloc(1UL, __size)={18446744073709551617:0}, 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={18446744073709551617:0}, proto={7:0}, proto_group0={0:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5644] RET, EXPR ldv_successful_zalloc(232UL) VAL [__this_module={18446744073709551621:18446744073709551620}, 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)={18446744073709551617:0}, proto={7:0}, proto_group0={0:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, tmp={-3:0}] [L5644] tmp___0 = ldv_successful_zalloc(232UL) [L5645] proto_group0 = (struct sk_buff *)tmp___0 VAL [__this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, tmp={-3:0}, tmp___0={18446744073709551617:0}] [L5749] RET ldv_initialize_hdlc_proto_1() [L5752] COND FALSE !(ldv_retval_1 != 0) VAL [__this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, tmp={-2:0}, tmp___0=1, tmp___2=1] [L5664] tmp___0 = __VERIFIER_nondet_int() [L5666] case 0: VAL [__this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, 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={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, tmp={-2:0}, tmp___0=0, tmp___1=0, tmp___2=1] [L5671] COND TRUE ldv_state_variable_1 == 1 VAL [__this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, 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={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5471] int result ; VAL [\old(last_index)=0, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, skb={18446744073709551617:0}, skb={18446744073709551617:0}] [L5473] CALL assume_abort_if_not(((void*)(skb)) != ((void*) 0)) VAL [\old(cond)=1, \old(last_index)=0, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5259] COND FALSE !(!cond) VAL [\old(cond)=1, \old(last_index)=0, __this_module={18446744073709551621:18446744073709551620}, cond=1, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5473] RET assume_abort_if_not(((void*)(skb)) != ((void*) 0)) VAL [\old(last_index)=0, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, skb={18446744073709551617:0}, skb={18446744073709551617:0}] [L5474] EXPR skb->data VAL [\old(last_index)=0, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, skb={18446744073709551617:0}, skb={18446744073709551617:0}, skb->data={0:18446744073709551619}] [L5474] CALL assume_abort_if_not(((void*)((skb->data))) != ((void*) 0)) VAL [\old(cond)=1, \old(last_index)=0, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5259] COND FALSE !(!cond) VAL [\old(cond)=1, \old(last_index)=0, __this_module={18446744073709551621:18446744073709551620}, cond=1, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5474] RET assume_abort_if_not(((void*)((skb->data))) != ((void*) 0)) VAL [\old(last_index)=0, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, skb={18446744073709551617:0}, skb={18446744073709551617:0}, skb->data={0:18446744073709551619}] [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={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, result=3, set_impl={8:0}, skb={18446744073709551617:0}, skb={18446744073709551617:0}, skb->data={0:18446744073709551619}skb->data=257] [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={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [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={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5816] CALL, EXPR ldv_skb_alloc() VAL [\old(last_index)=0, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5975] void *skb ; [L5976] void *tmp___7 ; VAL [\old(last_index)=0, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5978] CALL, EXPR ldv_successful_zalloc(sizeof(struct sk_buff___0 )) VAL [\old(__size)=248, \old(last_index)=0, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5262] EXPR, FCALL calloc(1UL, __size) VAL [\old(__size)=248, \old(last_index)=0, __size=248, __this_module={18446744073709551621:18446744073709551620}, calloc(1UL, __size)={18446744073709551616:0}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5262] void *p = calloc(1UL, __size); VAL [\old(__size)=248, \old(last_index)=0, __size=248, __this_module={18446744073709551621:18446744073709551620}, calloc(1UL, __size)={18446744073709551616:0}, 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={18446744073709551616:0}, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5263] CALL assume_abort_if_not(p != (void *)0) VAL [\old(cond)=1, \old(last_index)=0, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5259] COND FALSE !(!cond) VAL [\old(cond)=1, \old(last_index)=0, __this_module={18446744073709551621:18446744073709551620}, cond=1, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5263] RET assume_abort_if_not(p != (void *)0) VAL [\old(__size)=248, \old(last_index)=0, __size=248, __this_module={18446744073709551621:18446744073709551620}, calloc(1UL, __size)={18446744073709551616:0}, 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={18446744073709551616:0}, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5264] return p; VAL [\old(__size)=248, \old(last_index)=0, \result={18446744073709551616:0}, __size=248, __this_module={18446744073709551621:18446744073709551620}, calloc(1UL, __size)={18446744073709551616:0}, 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={18446744073709551616:0}, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5978] RET, EXPR ldv_successful_zalloc(sizeof(struct sk_buff___0 )) VAL [\old(last_index)=0, __this_module={18446744073709551621:18446744073709551620}, 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 ))={18446744073709551616:0}, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [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={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, skb={18446744073709551616:0}, tmp___7={18446744073709551616:0}] [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={18446744073709551621:18446744073709551620}, e={18446744073709551616:0}, e={18446744073709551616:0}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={8:0}] [L5854] COND TRUE 1 VAL [\old(last_index)=0, __this_module={18446744073709551621:18446744073709551620}, e={18446744073709551616:0}, e={18446744073709551616:0}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={8:0}] [L5855] COND FALSE !(i < last_index) VAL [\old(last_index)=0, __this_module={18446744073709551621:18446744073709551620}, e={18446744073709551616:0}, e={18446744073709551616:0}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={8:0}] [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={18446744073709551621:18446744073709551620}, e={18446744073709551616:0}, e={18446744073709551616:0}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={8:0}] [L5983] RET ldv_set_add(LDV_SKBS, skb) [L5984] return (skb); VAL [\old(last_index)=0, \result={18446744073709551616:0}, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, skb={18446744073709551616:0}, tmp___7={18446744073709551616:0}] [L5816] RET, EXPR ldv_skb_alloc() VAL [\old(last_index)=0, \old(length)=1, __this_module={18446744073709551621:18446744073709551620}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_skb_alloc()={18446744073709551616:0}, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, length=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5816] tmp = ldv_skb_alloc() [L5817] return (tmp); VAL [\old(last_index)=0, \old(length)=1, \result={18446744073709551616:0}, __this_module={18446744073709551621:18446744073709551620}, 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, length=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, tmp={18446744073709551616:0}] [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={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, reason=0, ref_cnt=0, set_impl={8:0}] [L5488] RET x25_connected(dev, 0) [L5512] CALL ldv_skb_free(skb) VAL [\old(last_index)=1, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, skb={18446744073709551617:0}] [L5998] CALL ldv_set_remove(LDV_SKBS, skb) VAL [\old(last_index)=1, __this_module={18446744073709551621:18446744073709551620}, e={18446744073709551617:0}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set_impl={8:0}] [L5876] int i ; [L5877] int deleted_index ; [L5879] deleted_index = -1 [L5880] i = 0 VAL [\old(last_index)=1, __this_module={18446744073709551621:18446744073709551620}, deleted_index=-1, e={18446744073709551617:0}, e={18446744073709551617:0}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={8:0}] [L5881] COND TRUE 1 VAL [\old(last_index)=1, __this_module={18446744073709551621:18446744073709551620}, deleted_index=-1, e={18446744073709551617:0}, e={18446744073709551617:0}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={8:0}] [L5882] COND TRUE i < last_index VAL [\old(last_index)=1, __this_module={18446744073709551621:18446744073709551620}, deleted_index=-1, e={18446744073709551617:0}, e={18446744073709551617:0}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={8:0}] [L5886] EXPR set_impl[i] VAL [\old(last_index)=1, __this_module={18446744073709551621:18446744073709551620}, deleted_index=-1, e={18446744073709551617:0}, e={18446744073709551617:0}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={8:0}, set_impl[i]={18446744073709551616:0}] [L5886] COND FALSE !((unsigned long )set_impl[i] == (unsigned long )e) [L5891] i = i + 1 VAL [\old(last_index)=1, __this_module={18446744073709551621:18446744073709551620}, deleted_index=-1, e={18446744073709551617:0}, e={18446744073709551617:0}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={8:0}] [L5881] COND TRUE 1 VAL [\old(last_index)=1, __this_module={18446744073709551621:18446744073709551620}, deleted_index=-1, e={18446744073709551617:0}, e={18446744073709551617:0}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={8:0}] [L5882] COND FALSE !(i < last_index) VAL [\old(last_index)=1, __this_module={18446744073709551621:18446744073709551620}, deleted_index=-1, e={18446744073709551617:0}, e={18446744073709551617:0}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={8:0}] [L5893] COND FALSE !(deleted_index != -1) VAL [\old(last_index)=1, __this_module={18446744073709551621:18446744073709551620}, deleted_index=-1, e={18446744073709551617:0}, e={18446744073709551617:0}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={8:0}] [L5998] RET ldv_set_remove(LDV_SKBS, skb) VAL [\old(last_index)=1, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, skb={18446744073709551617:0}, skb={18446744073709551617:0}] [L5512] RET ldv_skb_free(skb) VAL [\old(last_index)=0, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, result=3, set_impl={8:0}, skb={18446744073709551617:0}, skb={18446744073709551617:0}, skb->data={0:18446744073709551619}skb->data=257] [L5513] return (0); VAL [\old(last_index)=0, \result=0, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, result=3, set_impl={8:0}, skb={18446744073709551617:0}, skb={18446744073709551617:0}, skb->data=257skb->data={0:18446744073709551619}] [L5672] RET x25_xmit(proto_group0, proto_group1) VAL [__this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, 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={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, tmp={-2:0}, tmp___0=0, tmp___1=0, tmp___2=1] [L5676] COND FALSE !(ldv_state_variable_1 == 2) VAL [__this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, 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={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, 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={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, 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={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, 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); VAL [\result=0, __this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={8:0}] [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={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, tmp___7=0] [L6047] CALL ldv_error() VAL [__this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5320] reach_error() VAL [__this_module={18446744073709551621:18446744073709551620}, 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={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 18 procedures, 238 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.1s, OverallIterations: 9, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6490 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6383 mSDsluCounter, 10372 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7746 mSDsCounter, 2630 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5975 IncrementalHoareTripleChecker+Invalid, 8605 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2630 mSolverCounterUnsat, 2626 mSDtfsCounter, 5975 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 309 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2234occurred in iteration=7, InterpolantAutomatonStates: 108, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 4068 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 968 NumberOfCodeBlocks, 968 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 806 ConstructedInterpolants, 0 QuantifiedInterpolants, 1754 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 542/542 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! [2021-12-06 17:20:21,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c6d3c-822f-4ae6-8e14-56228b496ace/bin/uautomizer-DrprNOufMa/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