./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_ppp.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_0e195c92-1988-4d5f-b9ac-0cd68c437c69/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e195c92-1988-4d5f-b9ac-0cd68c437c69/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_0e195c92-1988-4d5f-b9ac-0cd68c437c69/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e195c92-1988-4d5f-b9ac-0cd68c437c69/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_ppp.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e195c92-1988-4d5f-b9ac-0cd68c437c69/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_0e195c92-1988-4d5f-b9ac-0cd68c437c69/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 790ee47547867d006f1299e2cf5c9d6d26b057091574ae3950813e98f75c3c5e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 21:45:34,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 21:45:34,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 21:45:34,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 21:45:34,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 21:45:34,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 21:45:34,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 21:45:34,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 21:45:34,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 21:45:34,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 21:45:34,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 21:45:34,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 21:45:34,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 21:45:34,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 21:45:34,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 21:45:34,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 21:45:34,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 21:45:34,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 21:45:34,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 21:45:34,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 21:45:34,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 21:45:34,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 21:45:34,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 21:45:34,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 21:45:34,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 21:45:34,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 21:45:34,639 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 21:45:34,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 21:45:34,641 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 21:45:34,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 21:45:34,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 21:45:34,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 21:45:34,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 21:45:34,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 21:45:34,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 21:45:34,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 21:45:34,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 21:45:34,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 21:45:34,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 21:45:34,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 21:45:34,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 21:45:34,649 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e195c92-1988-4d5f-b9ac-0cd68c437c69/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 21:45:34,671 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 21:45:34,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 21:45:34,689 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 21:45:34,689 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 21:45:34,690 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 21:45:34,690 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 21:45:34,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 21:45:34,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 21:45:34,691 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 21:45:34,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 21:45:34,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 21:45:34,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 21:45:34,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 21:45:34,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 21:45:34,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 21:45:34,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 21:45:34,693 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 21:45:34,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 21:45:34,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 21:45:34,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 21:45:34,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 21:45:34,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:45:34,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 21:45:34,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 21:45:34,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 21:45:34,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 21:45:34,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 21:45:34,695 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 21:45:34,695 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 21:45:34,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 21:45:34,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 21:45:34,695 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_0e195c92-1988-4d5f-b9ac-0cd68c437c69/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e195c92-1988-4d5f-b9ac-0cd68c437c69/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 790ee47547867d006f1299e2cf5c9d6d26b057091574ae3950813e98f75c3c5e [2021-12-06 21:45:34,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 21:45:34,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 21:45:34,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 21:45:34,899 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 21:45:34,900 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 21:45:34,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e195c92-1988-4d5f-b9ac-0cd68c437c69/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_ppp.ko-entry_point.cil.out.i [2021-12-06 21:45:34,942 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e195c92-1988-4d5f-b9ac-0cd68c437c69/bin/uautomizer-DrprNOufMa/data/76c87c1a4/b639f56df09c4bbca5f4fc3df3fc06ee/FLAG053f23cd3 [2021-12-06 21:45:35,507 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 21:45:35,508 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e195c92-1988-4d5f-b9ac-0cd68c437c69/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_ppp.ko-entry_point.cil.out.i [2021-12-06 21:45:35,533 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e195c92-1988-4d5f-b9ac-0cd68c437c69/bin/uautomizer-DrprNOufMa/data/76c87c1a4/b639f56df09c4bbca5f4fc3df3fc06ee/FLAG053f23cd3 [2021-12-06 21:45:35,996 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e195c92-1988-4d5f-b9ac-0cd68c437c69/bin/uautomizer-DrprNOufMa/data/76c87c1a4/b639f56df09c4bbca5f4fc3df3fc06ee [2021-12-06 21:45:36,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 21:45:36,002 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 21:45:36,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 21:45:36,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 21:45:36,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 21:45:36,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:45:35" (1/1) ... [2021-12-06 21:45:36,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7377884c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:45:36, skipping insertion in model container [2021-12-06 21:45:36,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:45:35" (1/1) ... [2021-12-06 21:45:36,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 21:45:36,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:45:36,597 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_0e195c92-1988-4d5f-b9ac-0cd68c437c69/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_ppp.ko-entry_point.cil.out.i[152029,152042] [2021-12-06 21:45:36,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:45:36,883 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 21:45:36,971 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_0e195c92-1988-4d5f-b9ac-0cd68c437c69/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_ppp.ko-entry_point.cil.out.i[152029,152042] [2021-12-06 21:45:37,064 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:45:37,109 INFO L208 MainTranslator]: Completed translation [2021-12-06 21:45:37,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:45:37 WrapperNode [2021-12-06 21:45:37,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 21:45:37,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 21:45:37,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 21:45:37,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 21:45:37,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:45:37" (1/1) ... [2021-12-06 21:45:37,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:45:37" (1/1) ... [2021-12-06 21:45:37,199 INFO L137 Inliner]: procedures = 134, calls = 555, calls flagged for inlining = 53, calls inlined = 50, statements flattened = 1647 [2021-12-06 21:45:37,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 21:45:37,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 21:45:37,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 21:45:37,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 21:45:37,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:45:37" (1/1) ... [2021-12-06 21:45:37,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:45:37" (1/1) ... [2021-12-06 21:45:37,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:45:37" (1/1) ... [2021-12-06 21:45:37,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:45:37" (1/1) ... [2021-12-06 21:45:37,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:45:37" (1/1) ... [2021-12-06 21:45:37,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:45:37" (1/1) ... [2021-12-06 21:45:37,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:45:37" (1/1) ... [2021-12-06 21:45:37,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 21:45:37,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 21:45:37,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 21:45:37,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 21:45:37,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:45:37" (1/1) ... [2021-12-06 21:45:37,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:45:37,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e195c92-1988-4d5f-b9ac-0cd68c437c69/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:45:37,312 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e195c92-1988-4d5f-b9ac-0cd68c437c69/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 21:45:37,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e195c92-1988-4d5f-b9ac-0cd68c437c69/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 21:45:37,342 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_hard_header [2021-12-06 21:45:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_hard_header [2021-12-06 21:45:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-06 21:45:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-06 21:45:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_rx [2021-12-06 21:45:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_rx [2021-12-06 21:45:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-06 21:45:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_type_trans [2021-12-06 21:45:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_type_trans [2021-12-06 21:45:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2021-12-06 21:45:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2021-12-06 21:45:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-06 21:45:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 21:45:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-06 21:45:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-06 21:45:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 21:45:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2021-12-06 21:45:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2021-12-06 21:45:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-06 21:45:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-06 21:45:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_3 [2021-12-06 21:45:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_3 [2021-12-06 21:45:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 21:45:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 21:45:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_on [2021-12-06 21:45:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_on [2021-12-06 21:45:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-06 21:45:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-06 21:45:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-06 21:45:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-06 21:45:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 21:45:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 21:45:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 21:45:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_tx_flush [2021-12-06 21:45:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_tx_flush [2021-12-06 21:45:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-12-06 21:45:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-12-06 21:45:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 21:45:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 21:45:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 21:45:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 21:45:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 21:45:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-06 21:45:37,347 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-06 21:45:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 21:45:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure get_ppp [2021-12-06 21:45:37,347 INFO L138 BoogieDeclarations]: Found implementation of procedure get_ppp [2021-12-06 21:45:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 21:45:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 21:45:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure get_proto [2021-12-06 21:45:37,347 INFO L138 BoogieDeclarations]: Found implementation of procedure get_proto [2021-12-06 21:45:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-06 21:45:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-12-06 21:45:37,348 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-12-06 21:45:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_tx_cp [2021-12-06 21:45:37,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_tx_cp [2021-12-06 21:45:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 21:45:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-06 21:45:37,348 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-06 21:45:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-06 21:45:37,348 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-06 21:45:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 21:45:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 21:45:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_cp_event [2021-12-06 21:45:37,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_cp_event [2021-12-06 21:45:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-06 21:45:37,349 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-06 21:45:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-06 21:45:37,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-06 21:45:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-06 21:45:37,349 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-06 21:45:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ioctl [2021-12-06 21:45:37,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ioctl [2021-12-06 21:45:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure proto_name [2021-12-06 21:45:37,350 INFO L138 BoogieDeclarations]: Found implementation of procedure proto_name [2021-12-06 21:45:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 21:45:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2021-12-06 21:45:37,350 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2021-12-06 21:45:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-06 21:45:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-06 21:45:37,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-06 21:45:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 21:45:37,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 21:45:37,586 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 21:45:37,588 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 21:45:37,975 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-06 21:45:38,523 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 21:45:38,533 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 21:45:38,533 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 21:45:38,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:45:38 BoogieIcfgContainer [2021-12-06 21:45:38,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 21:45:38,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 21:45:38,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 21:45:38,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 21:45:38,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 09:45:35" (1/3) ... [2021-12-06 21:45:38,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ec02e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:45:38, skipping insertion in model container [2021-12-06 21:45:38,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:45:37" (2/3) ... [2021-12-06 21:45:38,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ec02e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:45:38, skipping insertion in model container [2021-12-06 21:45:38,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:45:38" (3/3) ... [2021-12-06 21:45:38,541 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_ppp.ko-entry_point.cil.out.i [2021-12-06 21:45:38,545 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 21:45:38,545 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 21:45:38,585 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 21:45:38,590 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 21:45:38,590 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 21:45:38,616 INFO L276 IsEmpty]: Start isEmpty. Operand has 593 states, 433 states have (on average 1.4133949191685913) internal successors, (612), 454 states have internal predecessors, (612), 126 states have call successors, (126), 33 states have call predecessors, (126), 32 states have return successors, (122), 115 states have call predecessors, (122), 122 states have call successors, (122) [2021-12-06 21:45:38,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 21:45:38,624 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:45:38,624 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:38,625 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:45:38,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:45:38,629 INFO L85 PathProgramCache]: Analyzing trace with hash 461964592, now seen corresponding path program 1 times [2021-12-06 21:45:38,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:45:38,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908423190] [2021-12-06 21:45:38,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:45:38,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:45:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:38,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 21:45:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:38,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 21:45:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:38,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 21:45:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:39,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:45:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:39,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 21:45:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:39,023 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-06 21:45:39,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:45:39,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908423190] [2021-12-06 21:45:39,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908423190] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:45:39,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:45:39,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:45:39,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142204160] [2021-12-06 21:45:39,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:45:39,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 21:45:39,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:45:39,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 21:45:39,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:45:39,054 INFO L87 Difference]: Start difference. First operand has 593 states, 433 states have (on average 1.4133949191685913) internal successors, (612), 454 states have internal predecessors, (612), 126 states have call successors, (126), 33 states have call predecessors, (126), 32 states have return successors, (122), 115 states have call predecessors, (122), 122 states have call successors, (122) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-06 21:45:40,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:45:40,289 INFO L93 Difference]: Finished difference Result 1924 states and 3013 transitions. [2021-12-06 21:45:40,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:45:40,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2021-12-06 21:45:40,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:45:40,317 INFO L225 Difference]: With dead ends: 1924 [2021-12-06 21:45:40,317 INFO L226 Difference]: Without dead ends: 1316 [2021-12-06 21:45:40,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:45:40,335 INFO L933 BasicCegarLoop]: 948 mSDtfsCounter, 1221 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 2224 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:45:40,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1283 Valid, 2224 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 21:45:40,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2021-12-06 21:45:40,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1124. [2021-12-06 21:45:40,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 827 states have (on average 1.4014510278113663) internal successors, (1159), 857 states have internal predecessors, (1159), 234 states have call successors, (234), 63 states have call predecessors, (234), 62 states have return successors, (233), 219 states have call predecessors, (233), 233 states have call successors, (233) [2021-12-06 21:45:40,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1626 transitions. [2021-12-06 21:45:40,475 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1626 transitions. Word has length 47 [2021-12-06 21:45:40,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:45:40,475 INFO L470 AbstractCegarLoop]: Abstraction has 1124 states and 1626 transitions. [2021-12-06 21:45:40,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-06 21:45:40,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1626 transitions. [2021-12-06 21:45:40,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-06 21:45:40,480 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:45:40,481 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:40,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 21:45:40,481 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:45:40,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:45:40,482 INFO L85 PathProgramCache]: Analyzing trace with hash -203116028, now seen corresponding path program 1 times [2021-12-06 21:45:40,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:45:40,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159532772] [2021-12-06 21:45:40,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:45:40,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:45:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:40,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 21:45:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:40,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 21:45:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:40,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 21:45:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:40,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:45:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:40,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 21:45:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:40,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 21:45:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:40,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 21:45:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-06 21:45:40,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:45:40,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159532772] [2021-12-06 21:45:40,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159532772] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:45:40,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:45:40,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:45:40,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074062366] [2021-12-06 21:45:40,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:45:40,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:45:40,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:45:40,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:45:40,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:45:40,623 INFO L87 Difference]: Start difference. First operand 1124 states and 1626 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 21:45:41,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:45:41,710 INFO L93 Difference]: Finished difference Result 2425 states and 3576 transitions. [2021-12-06 21:45:41,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:45:41,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2021-12-06 21:45:41,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:45:41,729 INFO L225 Difference]: With dead ends: 2425 [2021-12-06 21:45:41,729 INFO L226 Difference]: Without dead ends: 1315 [2021-12-06 21:45:41,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:45:41,742 INFO L933 BasicCegarLoop]: 1012 mSDtfsCounter, 1239 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:45:41,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1290 Valid, 2340 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 21:45:41,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2021-12-06 21:45:41,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1123. [2021-12-06 21:45:41,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 826 states have (on average 1.3983050847457628) internal successors, (1155), 856 states have internal predecessors, (1155), 234 states have call successors, (234), 63 states have call predecessors, (234), 62 states have return successors, (233), 219 states have call predecessors, (233), 233 states have call successors, (233) [2021-12-06 21:45:41,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1622 transitions. [2021-12-06 21:45:41,837 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1622 transitions. Word has length 62 [2021-12-06 21:45:41,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:45:41,838 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1622 transitions. [2021-12-06 21:45:41,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 21:45:41,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1622 transitions. [2021-12-06 21:45:41,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-06 21:45:41,843 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:45:41,844 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-12-06 21:45:41,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 21:45:41,844 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:45:41,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:45:41,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1442675309, now seen corresponding path program 1 times [2021-12-06 21:45:41,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:45:41,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735212673] [2021-12-06 21:45:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:45:41,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:45:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:41,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 21:45:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:41,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 21:45:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:41,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 21:45:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:41,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:45:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:42,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 21:45:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:42,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 21:45:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:42,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 21:45:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:42,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 21:45:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:42,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 21:45:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:42,031 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-12-06 21:45:42,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:45:42,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735212673] [2021-12-06 21:45:42,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735212673] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:45:42,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:45:42,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:45:42,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038605441] [2021-12-06 21:45:42,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:45:42,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:45:42,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:45:42,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:45:42,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:45:42,033 INFO L87 Difference]: Start difference. First operand 1123 states and 1622 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 21:45:43,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:45:43,312 INFO L93 Difference]: Finished difference Result 3722 states and 5707 transitions. [2021-12-06 21:45:43,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:45:43,313 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2021-12-06 21:45:43,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:45:43,347 INFO L225 Difference]: With dead ends: 3722 [2021-12-06 21:45:43,347 INFO L226 Difference]: Without dead ends: 2608 [2021-12-06 21:45:43,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:45:43,362 INFO L933 BasicCegarLoop]: 966 mSDtfsCounter, 1207 mSDsluCounter, 3094 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 4060 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:45:43,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1270 Valid, 4060 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 21:45:43,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2608 states. [2021-12-06 21:45:43,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2608 to 2370. [2021-12-06 21:45:43,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2370 states, 1755 states have (on average 1.4062678062678062) internal successors, (2468), 1821 states have internal predecessors, (2468), 478 states have call successors, (478), 125 states have call predecessors, (478), 136 states have return successors, (599), 455 states have call predecessors, (599), 477 states have call successors, (599) [2021-12-06 21:45:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2370 states to 2370 states and 3545 transitions. [2021-12-06 21:45:43,475 INFO L78 Accepts]: Start accepts. Automaton has 2370 states and 3545 transitions. Word has length 83 [2021-12-06 21:45:43,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:45:43,475 INFO L470 AbstractCegarLoop]: Abstraction has 2370 states and 3545 transitions. [2021-12-06 21:45:43,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 21:45:43,476 INFO L276 IsEmpty]: Start isEmpty. Operand 2370 states and 3545 transitions. [2021-12-06 21:45:43,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-06 21:45:43,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:45:43,484 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:45:43,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 21:45:43,484 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:45:43,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:45:43,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1545482870, now seen corresponding path program 1 times [2021-12-06 21:45:43,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:45:43,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977817132] [2021-12-06 21:45:43,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:45:43,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:45:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:43,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 21:45:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:43,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 21:45:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:43,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 21:45:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:43,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:45:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:43,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 21:45:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:43,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 21:45:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:43,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 21:45:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:43,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:45:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:43,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:45:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:43,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 21:45:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:43,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 21:45:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:43,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 21:45:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:43,676 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-12-06 21:45:43,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:45:43,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977817132] [2021-12-06 21:45:43,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977817132] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:45:43,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:45:43,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:45:43,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81193198] [2021-12-06 21:45:43,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:45:43,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:45:43,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:45:43,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:45:43,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:45:43,679 INFO L87 Difference]: Start difference. First operand 2370 states and 3545 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 21:45:44,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:45:44,828 INFO L93 Difference]: Finished difference Result 4998 states and 7343 transitions. [2021-12-06 21:45:44,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:45:44,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2021-12-06 21:45:44,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:45:44,847 INFO L225 Difference]: With dead ends: 4998 [2021-12-06 21:45:44,847 INFO L226 Difference]: Without dead ends: 2642 [2021-12-06 21:45:44,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:45:44,864 INFO L933 BasicCegarLoop]: 929 mSDtfsCounter, 977 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 2070 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:45:44,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1019 Valid, 2070 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 21:45:44,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2021-12-06 21:45:44,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2411. [2021-12-06 21:45:44,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2411 states, 1782 states have (on average 1.361391694725028) internal successors, (2426), 1849 states have internal predecessors, (2426), 454 states have call successors, (454), 163 states have call predecessors, (454), 174 states have return successors, (561), 442 states have call predecessors, (561), 453 states have call successors, (561) [2021-12-06 21:45:44,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 3441 transitions. [2021-12-06 21:45:44,992 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 3441 transitions. Word has length 119 [2021-12-06 21:45:44,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:45:44,993 INFO L470 AbstractCegarLoop]: Abstraction has 2411 states and 3441 transitions. [2021-12-06 21:45:44,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 21:45:44,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 3441 transitions. [2021-12-06 21:45:44,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-06 21:45:44,997 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:45:44,997 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:45:44,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 21:45:44,998 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:45:44,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:45:44,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1893256586, now seen corresponding path program 2 times [2021-12-06 21:45:44,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:45:44,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896312320] [2021-12-06 21:45:44,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:45:44,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:45:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:45,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 21:45:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:45,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 21:45:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:45,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 21:45:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:45,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:45:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:45,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 21:45:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:45,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 21:45:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:45,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 21:45:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:45,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 21:45:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:45,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 21:45:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:45,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 21:45:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:45,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 21:45:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:45,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:45:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:45,133 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-06 21:45:45,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:45:45,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896312320] [2021-12-06 21:45:45,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896312320] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:45:45,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:45:45,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:45:45,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741945075] [2021-12-06 21:45:45,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:45:45,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:45:45,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:45:45,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:45:45,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:45:45,134 INFO L87 Difference]: Start difference. First operand 2411 states and 3441 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 21:45:46,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:45:46,697 INFO L93 Difference]: Finished difference Result 5630 states and 8219 transitions. [2021-12-06 21:45:46,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:45:46,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 119 [2021-12-06 21:45:46,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:45:46,722 INFO L225 Difference]: With dead ends: 5630 [2021-12-06 21:45:46,722 INFO L226 Difference]: Without dead ends: 3820 [2021-12-06 21:45:46,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:45:46,739 INFO L933 BasicCegarLoop]: 1240 mSDtfsCounter, 982 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:45:46,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1036 Valid, 3076 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 21:45:46,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3820 states. [2021-12-06 21:45:46,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3820 to 3462. [2021-12-06 21:45:46,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3462 states, 2581 states have (on average 1.3684618364974817) internal successors, (3532), 2681 states have internal predecessors, (3532), 640 states have call successors, (640), 223 states have call predecessors, (640), 240 states have return successors, (793), 617 states have call predecessors, (793), 639 states have call successors, (793) [2021-12-06 21:45:46,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3462 states to 3462 states and 4965 transitions. [2021-12-06 21:45:46,908 INFO L78 Accepts]: Start accepts. Automaton has 3462 states and 4965 transitions. Word has length 119 [2021-12-06 21:45:46,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:45:46,908 INFO L470 AbstractCegarLoop]: Abstraction has 3462 states and 4965 transitions. [2021-12-06 21:45:46,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 21:45:46,909 INFO L276 IsEmpty]: Start isEmpty. Operand 3462 states and 4965 transitions. [2021-12-06 21:45:46,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-06 21:45:46,917 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:45:46,918 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:45:46,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 21:45:46,918 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:45:46,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:45:46,919 INFO L85 PathProgramCache]: Analyzing trace with hash 528219514, now seen corresponding path program 1 times [2021-12-06 21:45:46,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:45:46,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573724385] [2021-12-06 21:45:46,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:45:46,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:45:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:46,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 21:45:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:46,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 21:45:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:46,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 21:45:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:47,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:45:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:47,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 21:45:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:47,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 21:45:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:47,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 21:45:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:47,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 21:45:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:47,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 21:45:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:47,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 21:45:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:47,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 21:45:47,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:47,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:45:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:47,068 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-06 21:45:47,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:45:47,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573724385] [2021-12-06 21:45:47,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573724385] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:45:47,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:45:47,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:45:47,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717814779] [2021-12-06 21:45:47,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:45:47,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:45:47,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:45:47,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:45:47,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:45:47,072 INFO L87 Difference]: Start difference. First operand 3462 states and 4965 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 21:45:48,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:45:48,240 INFO L93 Difference]: Finished difference Result 7855 states and 11473 transitions. [2021-12-06 21:45:48,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:45:48,240 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 136 [2021-12-06 21:45:48,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:45:48,273 INFO L225 Difference]: With dead ends: 7855 [2021-12-06 21:45:48,273 INFO L226 Difference]: Without dead ends: 4994 [2021-12-06 21:45:48,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:45:48,290 INFO L933 BasicCegarLoop]: 1486 mSDtfsCounter, 1083 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 2868 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:45:48,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 2868 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 21:45:48,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4994 states. [2021-12-06 21:45:48,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4994 to 4517. [2021-12-06 21:45:48,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4517 states, 3382 states have (on average 1.3719692489651094) internal successors, (4640), 3515 states have internal predecessors, (4640), 826 states have call successors, (826), 285 states have call predecessors, (826), 308 states have return successors, (1025), 792 states have call predecessors, (1025), 825 states have call successors, (1025) [2021-12-06 21:45:48,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 6491 transitions. [2021-12-06 21:45:48,478 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 6491 transitions. Word has length 136 [2021-12-06 21:45:48,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:45:48,478 INFO L470 AbstractCegarLoop]: Abstraction has 4517 states and 6491 transitions. [2021-12-06 21:45:48,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 21:45:48,479 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 6491 transitions. [2021-12-06 21:45:48,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-06 21:45:48,488 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:45:48,488 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:45:48,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 21:45:48,489 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:45:48,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:45:48,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1586883258, now seen corresponding path program 1 times [2021-12-06 21:45:48,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:45:48,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063419643] [2021-12-06 21:45:48,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:45:48,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:45:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:48,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 21:45:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:48,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 21:45:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:48,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 21:45:48,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:48,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:45:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:48,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 21:45:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:48,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 21:45:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:48,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:45:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:48,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 21:45:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:48,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 21:45:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:48,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 21:45:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:48,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 21:45:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:48,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 21:45:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:48,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:45:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:48,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 21:45:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:48,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 21:45:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:48,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 21:45:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:48,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 21:45:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:48,720 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-12-06 21:45:48,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:45:48,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063419643] [2021-12-06 21:45:48,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063419643] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:45:48,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335230377] [2021-12-06 21:45:48,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:45:48,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:45:48,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e195c92-1988-4d5f-b9ac-0cd68c437c69/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:45:48,721 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e195c92-1988-4d5f-b9ac-0cd68c437c69/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:45:48,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e195c92-1988-4d5f-b9ac-0cd68c437c69/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 21:45:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:48,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 21:45:48,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:45:49,094 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-06 21:45:49,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:45:49,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335230377] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:45:49,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:45:49,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 21:45:49,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506555897] [2021-12-06 21:45:49,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:45:49,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:45:49,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:45:49,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:45:49,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:45:49,096 INFO L87 Difference]: Start difference. First operand 4517 states and 6491 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 21:45:49,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:45:49,262 INFO L93 Difference]: Finished difference Result 9714 states and 14031 transitions. [2021-12-06 21:45:49,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:45:49,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2021-12-06 21:45:49,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:45:49,295 INFO L225 Difference]: With dead ends: 9714 [2021-12-06 21:45:49,295 INFO L226 Difference]: Without dead ends: 5211 [2021-12-06 21:45:49,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:45:49,311 INFO L933 BasicCegarLoop]: 1036 mSDtfsCounter, 167 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:45:49,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 1868 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:45:49,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5211 states. [2021-12-06 21:45:49,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5211 to 4577. [2021-12-06 21:45:49,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4577 states, 3442 states have (on average 1.3654851830331203) internal successors, (4700), 3575 states have internal predecessors, (4700), 826 states have call successors, (826), 285 states have call predecessors, (826), 308 states have return successors, (1025), 792 states have call predecessors, (1025), 825 states have call successors, (1025) [2021-12-06 21:45:49,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4577 states to 4577 states and 6551 transitions. [2021-12-06 21:45:49,512 INFO L78 Accepts]: Start accepts. Automaton has 4577 states and 6551 transitions. Word has length 147 [2021-12-06 21:45:49,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:45:49,513 INFO L470 AbstractCegarLoop]: Abstraction has 4577 states and 6551 transitions. [2021-12-06 21:45:49,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 21:45:49,513 INFO L276 IsEmpty]: Start isEmpty. Operand 4577 states and 6551 transitions. [2021-12-06 21:45:49,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-06 21:45:49,520 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:45:49,520 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:45:49,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e195c92-1988-4d5f-b9ac-0cd68c437c69/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 21:45:49,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e195c92-1988-4d5f-b9ac-0cd68c437c69/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:45:49,721 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:45:49,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:45:49,722 INFO L85 PathProgramCache]: Analyzing trace with hash 2106356288, now seen corresponding path program 1 times [2021-12-06 21:45:49,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:45:49,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346969499] [2021-12-06 21:45:49,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:45:49,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:45:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:49,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 21:45:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:49,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 21:45:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:49,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 21:45:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:49,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:45:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:49,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 21:45:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:49,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 21:45:49,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:49,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:45:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:49,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 21:45:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:49,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 21:45:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:49,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 21:45:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:49,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 21:45:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:49,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 21:45:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:49,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:45:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:49,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 21:45:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:49,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 21:45:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:49,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 21:45:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:49,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 21:45:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:49,922 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-12-06 21:45:49,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:45:49,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346969499] [2021-12-06 21:45:49,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346969499] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:45:49,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107592460] [2021-12-06 21:45:49,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:45:49,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:45:49,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e195c92-1988-4d5f-b9ac-0cd68c437c69/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:45:49,924 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e195c92-1988-4d5f-b9ac-0cd68c437c69/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:45:49,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e195c92-1988-4d5f-b9ac-0cd68c437c69/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 21:45:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:50,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 21:45:50,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:45:50,297 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-12-06 21:45:50,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:45:50,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107592460] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:45:50,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:45:50,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2021-12-06 21:45:50,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807019747] [2021-12-06 21:45:50,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:45:50,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:45:50,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:45:50,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:45:50,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:45:50,298 INFO L87 Difference]: Start difference. First operand 4577 states and 6551 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 21:45:50,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:45:50,440 INFO L93 Difference]: Finished difference Result 9150 states and 13556 transitions. [2021-12-06 21:45:50,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:45:50,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2021-12-06 21:45:50,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:45:50,467 INFO L225 Difference]: With dead ends: 9150 [2021-12-06 21:45:50,467 INFO L226 Difference]: Without dead ends: 4587 [2021-12-06 21:45:50,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 180 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:45:50,486 INFO L933 BasicCegarLoop]: 833 mSDtfsCounter, 2 mSDsluCounter, 2494 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3327 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:45:50,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 3327 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:45:50,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4587 states. [2021-12-06 21:45:50,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4587 to 4577. [2021-12-06 21:45:50,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4577 states, 3432 states have (on average 1.3607226107226107) internal successors, (4670), 3570 states have internal predecessors, (4670), 826 states have call successors, (826), 285 states have call predecessors, (826), 318 states have return successors, (1052), 797 states have call predecessors, (1052), 825 states have call successors, (1052) [2021-12-06 21:45:50,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4577 states to 4577 states and 6548 transitions. [2021-12-06 21:45:50,639 INFO L78 Accepts]: Start accepts. Automaton has 4577 states and 6548 transitions. Word has length 147 [2021-12-06 21:45:50,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:45:50,639 INFO L470 AbstractCegarLoop]: Abstraction has 4577 states and 6548 transitions. [2021-12-06 21:45:50,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 21:45:50,640 INFO L276 IsEmpty]: Start isEmpty. Operand 4577 states and 6548 transitions. [2021-12-06 21:45:50,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-06 21:45:50,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:45:50,647 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:45:50,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e195c92-1988-4d5f-b9ac-0cd68c437c69/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 21:45:50,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e195c92-1988-4d5f-b9ac-0cd68c437c69/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-06 21:45:50,848 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:45:50,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:45:50,848 INFO L85 PathProgramCache]: Analyzing trace with hash 852351328, now seen corresponding path program 1 times [2021-12-06 21:45:50,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:45:50,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597352723] [2021-12-06 21:45:50,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:45:50,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:45:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:51,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 21:45:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:51,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 21:45:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:51,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 21:45:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:51,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:45:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:51,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 21:45:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:51,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 21:45:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:51,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 21:45:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:51,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 21:45:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:51,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 21:45:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:51,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 21:45:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:51,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:45:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:51,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 21:45:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:51,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 21:45:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:51,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 21:45:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:51,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 21:45:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:51,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 21:45:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:51,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:45:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:51,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 21:45:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:51,346 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-12-06 21:45:51,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:45:51,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597352723] [2021-12-06 21:45:51,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597352723] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:45:51,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:45:51,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-06 21:45:51,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445971395] [2021-12-06 21:45:51,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:45:51,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 21:45:51,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:45:51,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 21:45:51,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2021-12-06 21:45:51,348 INFO L87 Difference]: Start difference. First operand 4577 states and 6548 transitions. Second operand has 16 states, 15 states have (on average 6.333333333333333) internal successors, (95), 11 states have internal predecessors, (95), 3 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (18), 5 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 21:45:53,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:45:53,447 INFO L93 Difference]: Finished difference Result 9629 states and 14338 transitions. [2021-12-06 21:45:53,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 21:45:53,448 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.333333333333333) internal successors, (95), 11 states have internal predecessors, (95), 3 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (18), 5 states have call predecessors, (18), 2 states have call successors, (18) Word has length 154 [2021-12-06 21:45:53,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:45:53,482 INFO L225 Difference]: With dead ends: 9629 [2021-12-06 21:45:53,482 INFO L226 Difference]: Without dead ends: 5066 [2021-12-06 21:45:53,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2021-12-06 21:45:53,503 INFO L933 BasicCegarLoop]: 897 mSDtfsCounter, 210 mSDsluCounter, 9655 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 10552 SdHoareTripleChecker+Invalid, 2538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 21:45:53,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 10552 Invalid, 2538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-06 21:45:53,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5066 states. [2021-12-06 21:45:53,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5066 to 4607. [2021-12-06 21:45:53,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4607 states, 3462 states have (on average 1.3547082611207395) internal successors, (4690), 3590 states have internal predecessors, (4690), 826 states have call successors, (826), 285 states have call predecessors, (826), 318 states have return successors, (1047), 807 states have call predecessors, (1047), 825 states have call successors, (1047) [2021-12-06 21:45:53,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4607 states to 4607 states and 6563 transitions. [2021-12-06 21:45:53,675 INFO L78 Accepts]: Start accepts. Automaton has 4607 states and 6563 transitions. Word has length 154 [2021-12-06 21:45:53,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:45:53,676 INFO L470 AbstractCegarLoop]: Abstraction has 4607 states and 6563 transitions. [2021-12-06 21:45:53,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.333333333333333) internal successors, (95), 11 states have internal predecessors, (95), 3 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (18), 5 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 21:45:53,676 INFO L276 IsEmpty]: Start isEmpty. Operand 4607 states and 6563 transitions. [2021-12-06 21:45:53,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-06 21:45:53,685 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:45:53,685 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:53,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 21:45:53,686 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:45:53,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:45:53,686 INFO L85 PathProgramCache]: Analyzing trace with hash -145558883, now seen corresponding path program 1 times [2021-12-06 21:45:53,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:45:53,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815963240] [2021-12-06 21:45:53,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:45:53,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:45:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:45:53,777 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 21:45:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:45:53,940 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 21:45:53,941 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 21:45:53,941 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 21:45:53,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 21:45:53,945 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:45:53,947 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 21:45:53,998 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 21:45:53,999 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 21:45:53,999 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 21:45:53,999 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 21:45:53,999 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 21:45:53,999 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 21:45:53,999 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 21:45:54,000 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 21:45:54,000 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 21:45:54,000 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 21:45:54,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 09:45:54 BoogieIcfgContainer [2021-12-06 21:45:54,104 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 21:45:54,104 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 21:45:54,104 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 21:45:54,104 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 21:45:54,104 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:45:38" (3/4) ... [2021-12-06 21:45:54,106 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 21:45:54,120 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 21:45:54,120 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 21:45:54,121 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 21:45:54,121 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 21:45:54,121 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 21:45:54,121 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 21:45:54,121 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 21:45:54,121 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 21:45:54,122 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 21:45:54,122 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 21:45:54,213 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e195c92-1988-4d5f-b9ac-0cd68c437c69/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 21:45:54,214 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 21:45:54,214 INFO L158 Benchmark]: Toolchain (without parser) took 18212.05ms. Allocated memory was 125.8MB in the beginning and 450.9MB in the end (delta: 325.1MB). Free memory was 74.8MB in the beginning and 218.8MB in the end (delta: -144.0MB). Peak memory consumption was 181.4MB. Max. memory is 16.1GB. [2021-12-06 21:45:54,214 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 125.8MB. Free memory is still 99.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 21:45:54,215 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1105.47ms. Allocated memory was 125.8MB in the beginning and 176.2MB in the end (delta: 50.3MB). Free memory was 74.6MB in the beginning and 125.0MB in the end (delta: -50.3MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2021-12-06 21:45:54,215 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.10ms. Allocated memory is still 176.2MB. Free memory was 125.0MB in the beginning and 114.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 21:45:54,215 INFO L158 Benchmark]: Boogie Preprocessor took 81.48ms. Allocated memory is still 176.2MB. Free memory was 114.4MB in the beginning and 104.7MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 21:45:54,215 INFO L158 Benchmark]: RCFGBuilder took 1253.14ms. Allocated memory is still 176.2MB. Free memory was 104.7MB in the beginning and 91.2MB in the end (delta: 13.6MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. [2021-12-06 21:45:54,215 INFO L158 Benchmark]: TraceAbstraction took 15567.00ms. Allocated memory was 176.2MB in the beginning and 450.9MB in the end (delta: 274.7MB). Free memory was 90.2MB in the beginning and 262.8MB in the end (delta: -172.6MB). Peak memory consumption was 259.3MB. Max. memory is 16.1GB. [2021-12-06 21:45:54,216 INFO L158 Benchmark]: Witness Printer took 109.84ms. Allocated memory is still 450.9MB. Free memory was 262.8MB in the beginning and 218.8MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2021-12-06 21:45:54,217 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 125.8MB. Free memory is still 99.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1105.47ms. Allocated memory was 125.8MB in the beginning and 176.2MB in the end (delta: 50.3MB). Free memory was 74.6MB in the beginning and 125.0MB in the end (delta: -50.3MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.10ms. Allocated memory is still 176.2MB. Free memory was 125.0MB in the beginning and 114.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 81.48ms. Allocated memory is still 176.2MB. Free memory was 114.4MB in the beginning and 104.7MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 1253.14ms. Allocated memory is still 176.2MB. Free memory was 104.7MB in the beginning and 91.2MB in the end (delta: 13.6MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. * TraceAbstraction took 15567.00ms. Allocated memory was 176.2MB in the beginning and 450.9MB in the end (delta: 274.7MB). Free memory was 90.2MB in the beginning and 262.8MB in the end (delta: -172.6MB). Peak memory consumption was 259.3MB. Max. memory is 16.1GB. * Witness Printer took 109.84ms. Allocated memory is still 450.9MB. Free memory was 262.8MB in the beginning and 218.8MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled * 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: 5283]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L5306] int LDV_IN_INTERRUPT = 1; [L5307] struct net_device *proto_group1 ; [L5308] int ldv_state_variable_0 ; [L5309] int ldv_state_variable_3 ; [L5310] int ldv_timer_state_1 = 0; [L5311] int ldv_state_variable_2 ; [L5312] struct sk_buff *proto_group0 ; [L5313] int ref_cnt ; [L5314] int ldv_state_variable_1 ; [L5315] struct timer_list *ldv_timer_list_1 ; [L5374] static struct sk_buff_head tx_queue ; [L5543-L5569] static int cp_table[13U][7U] = { { 163, 16, 16, 16, 16, 16, 16}, { 16, 0, 0, 0, 0, 0, 0}, { 16, 16, 1026, 131, 131, 133, 16}, { 16, 16, 1, 1, 1, 1, 16}, { 2048, 421, 2, 261, 262, 261, 389}, { 2048, 675, 2, 515, 516, 515, 643}, { 2048, 2049, 2, 36, 131, 6, 131}, { 2048, 2049, 2, 163, 131, 165, 131}, { 2048, 2049, 2050, 2051, 2051, 2051, 2114}, { 0, 1, 1, 3, 3, 5, 131}, { 4096, 4097, 4098, 4099, 4100, 4101, 4102}, { 0, 1, 2, 3, 3, 5, 6}, { 0, 1, 1, 1, 1, 1, 1058}}; [L6005-L6007] static struct hdlc_proto proto = {0, & ppp_close, & ppp_start, & ppp_stop, 0, & ppp_ioctl, & ppp_type_trans, & ppp_rx, 0, & __this_module, 0}; [L6008] static struct header_ops const ppp_header_ops = {& ppp_hard_header, 0, 0, 0, 0}; [L6088] int ldv_retval_0 ; [L6508] Element set_impl[15] ; [L6509] int last_index = 0; [L6643] Set LDV_SKBS ; VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L6156] struct ifreq *ldvarg0 ; [L6157] void *tmp ; [L6158] unsigned int ldvarg1 ; [L6159] unsigned int tmp___0 ; [L6160] unsigned short ldvarg4 ; [L6161] unsigned short tmp___1 ; [L6162] struct sk_buff *ldvarg3 ; [L6163] void *tmp___2 ; [L6164] struct net_device *ldvarg5 ; [L6165] void *tmp___3 ; [L6166] void *ldvarg2 ; [L6167] void *tmp___4 ; [L6168] void *ldvarg6 ; [L6169] void *tmp___5 ; [L6170] int tmp___6 ; [L6171] int tmp___7 ; [L6172] int tmp___8 ; [L6173] int tmp___9 ; VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L6175] CALL, EXPR ldv_zalloc(40UL) VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5248] void *p ; [L5249] void *tmp ; [L5250] int tmp___0 ; [L5252] tmp___0 = __VERIFIER_nondet_int() [L5253] COND TRUE tmp___0 != 0 [L5254] return ((void *)0); VAL [\old(size)=40, \result={0:0}, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, size=40, tmp___0=1, tx_queue={12:0}] [L6175] RET, EXPR ldv_zalloc(40UL) VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ldv_zalloc(40UL)={0:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L6175] tmp = ldv_zalloc(40UL) [L6176] ldvarg0 = (struct ifreq *)tmp [L6177] tmp___0 = __VERIFIER_nondet_uint() [L6178] ldvarg1 = tmp___0 [L6179] tmp___1 = __VERIFIER_nondet_ushort() [L6180] ldvarg4 = tmp___1 VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ldvarg0={0:0}, ldvarg1=0, ldvarg4=10, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={0:0}, tmp___0=0, tmp___1=10, tx_queue={12:0}] [L6181] CALL, EXPR ldv_zalloc(232UL) VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5248] void *p ; [L5249] void *tmp ; [L5250] int tmp___0 ; [L5252] tmp___0 = __VERIFIER_nondet_int() [L5253] COND TRUE tmp___0 != 0 [L5254] return ((void *)0); VAL [\old(size)=232, \result={0:0}, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, size=232, tmp___0=1, tx_queue={12:0}] [L6181] RET, EXPR ldv_zalloc(232UL) VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ldv_zalloc(232UL)={0:0}, ldvarg0={0:0}, ldvarg1=0, ldvarg4=10, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={0:0}, tmp___0=0, tmp___1=10, tx_queue={12:0}] [L6181] tmp___2 = ldv_zalloc(232UL) [L6182] ldvarg3 = (struct sk_buff *)tmp___2 VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ldvarg0={0:0}, ldvarg1=0, ldvarg3={0:0}, ldvarg4=10, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={0:0}, tmp___0=0, tmp___1=10, tmp___2={0:0}, tx_queue={12:0}] [L6183] CALL, EXPR ldv_zalloc(3264UL) VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5248] void *p ; [L5249] void *tmp ; [L5250] int tmp___0 ; [L5252] tmp___0 = __VERIFIER_nondet_int() [L5253] COND TRUE tmp___0 != 0 [L5254] return ((void *)0); VAL [\old(size)=3264, \result={0:0}, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, size=3264, tmp___0=1, tx_queue={12:0}] [L6183] RET, EXPR ldv_zalloc(3264UL) VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ldv_zalloc(3264UL)={0:0}, ldvarg0={0:0}, ldvarg1=0, ldvarg3={0:0}, ldvarg4=10, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={0:0}, tmp___0=0, tmp___1=10, tmp___2={0:0}, tx_queue={12:0}] [L6183] tmp___3 = ldv_zalloc(3264UL) [L6184] ldvarg5 = (struct net_device *)tmp___3 VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ldvarg0={0:0}, ldvarg1=0, ldvarg3={0:0}, ldvarg4=10, ldvarg5={0:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={0:0}, tmp___0=0, tmp___1=10, tmp___2={0:0}, tmp___3={0:0}, tx_queue={12:0}] [L6185] CALL, EXPR ldv_zalloc(1UL) VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5248] void *p ; [L5249] void *tmp ; [L5250] int tmp___0 ; [L5252] tmp___0 = __VERIFIER_nondet_int() [L5253] COND TRUE tmp___0 != 0 [L5254] return ((void *)0); VAL [\old(size)=1, \result={0:0}, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, size=1, tmp___0=1, tx_queue={12:0}] [L6185] RET, EXPR ldv_zalloc(1UL) VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ldv_zalloc(1UL)={0:0}, ldvarg0={0:0}, ldvarg1=0, ldvarg3={0:0}, ldvarg4=10, ldvarg5={0:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={0:0}, tmp___0=0, tmp___1=10, tmp___2={0:0}, tmp___3={0:0}, tx_queue={12:0}] [L6185] tmp___4 = ldv_zalloc(1UL) [L6186] ldvarg2 = tmp___4 VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ldvarg0={0:0}, ldvarg1=0, ldvarg2={0:0}, ldvarg3={0:0}, ldvarg4=10, ldvarg5={0:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={0:0}, tmp___0=0, tmp___1=10, tmp___2={0:0}, tmp___3={0:0}, tmp___4={0:0}, tx_queue={12:0}] [L6187] CALL, EXPR ldv_zalloc(1UL) VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5248] void *p ; [L5249] void *tmp ; [L5250] int tmp___0 ; [L5252] tmp___0 = __VERIFIER_nondet_int() [L5253] COND TRUE tmp___0 != 0 [L5254] return ((void *)0); VAL [\old(size)=1, \result={0:0}, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, size=1, tmp___0=1, tx_queue={12:0}] [L6187] RET, EXPR ldv_zalloc(1UL) VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ldv_zalloc(1UL)={0:0}, ldvarg0={0:0}, ldvarg1=0, ldvarg2={0:0}, ldvarg3={0:0}, ldvarg4=10, ldvarg5={0:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={0:0}, tmp___0=0, tmp___1=10, tmp___2={0:0}, tmp___3={0:0}, tmp___4={0:0}, tx_queue={12:0}] [L6187] tmp___5 = ldv_zalloc(1UL) [L6188] ldvarg6 = tmp___5 [L6189] CALL ldv_initialize() [L6662] CALL ldv_set_init(LDV_SKBS) [L6514] set = set_impl [L6515] last_index = 0 VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set={0:0}, set={16:0}, set_impl={16:0}, tx_queue={12:0}] [L6662] RET ldv_set_init(LDV_SKBS) [L6189] RET ldv_initialize() [L6190] ldv_state_variable_1 = 1 [L6191] ref_cnt = 0 [L6192] ldv_state_variable_0 = 1 [L6193] ldv_state_variable_3 = 0 [L6194] ldv_state_variable_2 = 0 VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ldvarg0={0:0}, ldvarg1=0, ldvarg2={0:0}, ldvarg3={0:0}, ldvarg4=10, ldvarg5={0:0}, ldvarg6={0:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={0:0}, tmp___0=0, tmp___1=10, tmp___2={0:0}, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tx_queue={12:0}] [L6196] tmp___6 = __VERIFIER_nondet_int() [L6198] case 0: [L6204] case 1: VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ldvarg0={0:0}, ldvarg1=0, ldvarg2={0:0}, ldvarg3={0:0}, ldvarg4=10, ldvarg5={0:0}, ldvarg6={0:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={0:0}, tmp___0=0, tmp___1=10, tmp___2={0:0}, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=1, tx_queue={12:0}] [L6205] COND TRUE ldv_state_variable_0 != 0 [L6206] tmp___7 = __VERIFIER_nondet_int() [L6208] case 0: [L6216] case 1: VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ldvarg0={0:0}, ldvarg1=0, ldvarg2={0:0}, ldvarg3={0:0}, ldvarg4=10, ldvarg5={0:0}, ldvarg6={0:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={0:0}, tmp___0=0, tmp___1=10, tmp___2={0:0}, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=1, tmp___7=1, tx_queue={12:0}] [L6217] COND TRUE ldv_state_variable_0 == 1 [L6218] CALL, EXPR mod_init() [L6076] CALL skb_queue_head_init(& tx_queue) [L5188] struct lock_class_key __key ; VAL [__key={17:0}, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, list={12:0}, list={12:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5190] CALL spinlock_check(& list->lock) VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, lock={12:20}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5137] return (& lock->ldv_6338.rlock); VAL [\result={12:20}, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, lock={12:20}, lock={12:20}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5190] RET spinlock_check(& list->lock) VAL [__key={17:0}, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, list={12:0}, list={12:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, spinlock_check(& list->lock)={12:20}, tx_queue={12:0}] [L5191] FCALL __raw_spin_lock_init(& list->lock.ldv_6338.rlock, "&(&list->lock)->rlock", & __key) VAL [__key={17:0}, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, list={12:0}, list={12:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5192] CALL __skb_queue_head_init(list) [L5177] struct sk_buff *tmp ; [L5179] tmp = (struct sk_buff *)list [L5180] list->next = tmp [L5181] list->prev = tmp [L5182] list->qlen = 0U VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, list={12:0}, list={12:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={12:0}, tx_queue={12:0}] [L5192] RET __skb_queue_head_init(list) [L5193] return; VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, list={12:0}, list={12:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L6076] RET skb_queue_head_init(& tx_queue) [L6077] FCALL register_hdlc_protocol(& proto) [L6078] return (0); VAL [\result=0, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L6218] RET, EXPR mod_init() [L6218] ldv_retval_0 = mod_init() [L6219] COND TRUE ldv_retval_0 == 0 [L6220] ldv_state_variable_0 = 3 [L6221] ldv_state_variable_2 = 1 [L6222] ldv_state_variable_3 = 1 [L6223] CALL ldv_initialize_hdlc_proto_3() [L6115] void *tmp ; [L6116] void *tmp___0 ; VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L6118] CALL, EXPR ldv_zalloc(3264UL) VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5248] void *p ; [L5249] void *tmp ; [L5250] int tmp___0 ; [L5252] tmp___0 = __VERIFIER_nondet_int() [L5253] COND TRUE tmp___0 != 0 [L5254] return ((void *)0); VAL [\old(size)=3264, \result={0:0}, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, size=3264, tmp___0=1, tx_queue={12:0}] [L6118] RET, EXPR ldv_zalloc(3264UL) VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ldv_zalloc(3264UL)={0:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L6118] tmp = ldv_zalloc(3264UL) [L6119] proto_group1 = (struct net_device *)tmp VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={0:0}, tx_queue={12:0}] [L6120] CALL, EXPR ldv_zalloc(232UL) VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5248] void *p ; [L5249] void *tmp ; [L5250] int tmp___0 ; [L5252] tmp___0 = __VERIFIER_nondet_int() [L5253] COND TRUE tmp___0 != 0 [L5254] return ((void *)0); VAL [\old(size)=232, \result={0:0}, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, size=232, tmp___0=1, tx_queue={12:0}] [L6120] RET, EXPR ldv_zalloc(232UL) VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ldv_zalloc(232UL)={0:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={0:0}, tx_queue={12:0}] [L6120] tmp___0 = ldv_zalloc(232UL) [L6121] proto_group0 = (struct sk_buff *)tmp___0 VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={0:0}, tmp___0={0:0}, tx_queue={12:0}] [L6223] RET ldv_initialize_hdlc_proto_3() [L6226] COND FALSE !(ldv_retval_0 != 0) VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ldvarg0={0:0}, ldvarg1=0, ldvarg2={0:0}, ldvarg3={0:0}, ldvarg4=10, ldvarg5={0:0}, ldvarg6={0:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={0:0}, tmp___0=0, tmp___1=10, tmp___2={0:0}, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=1, tmp___7=1, tx_queue={12:0}] [L6196] tmp___6 = __VERIFIER_nondet_int() [L6198] case 0: VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ldvarg0={0:0}, ldvarg1=0, ldvarg2={0:0}, ldvarg3={0:0}, ldvarg4=10, ldvarg5={0:0}, ldvarg6={0:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={0:0}, tmp___0=0, tmp___1=10, tmp___2={0:0}, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=1, tx_queue={12:0}] [L6199] COND TRUE ldv_state_variable_1 != 0 [L6200] CALL choose_timer_1(ldv_timer_list_1) [L6128] LDV_IN_INTERRUPT = 2 [L6129] EXPR timer->data [L6129] EXPR timer->function [L6129] CALL (*(timer->function))(timer->data) [L5913] struct proto *proto___0 ; [L5914] struct ppp *ppp ; [L5915] struct ppp *tmp ; [L5916] unsigned long flags ; [L5917] raw_spinlock_t *tmp___0 ; [L5919] proto___0 = (struct proto *)arg [L5920] EXPR proto___0->dev VAL [\old(arg)=18446744073709551613, __this_module={18446744073709551625:18446744073709551614}, arg=18446744073709551613, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto___0={0:-3}, proto___0->dev={18446744073709551619:-3264}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5920] CALL, EXPR get_ppp(proto___0->dev) VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, dev={18446744073709551619:-3264}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5378] struct hdlc_device *tmp ; VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, dev={18446744073709551619:-3264}, dev={18446744073709551619:-3264}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5380] CALL, EXPR dev_to_hdlc(dev) VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, dev={18446744073709551619:-3264}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5367] void *tmp ; [L5369] CALL, EXPR netdev_priv((struct net_device const *)dev) [L5324] return ((void *)dev + 3264U); VAL [\result={18446744073709551619:0}, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, dev={18446744073709551619:-3264}, dev={18446744073709551619:-3264}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5369] RET, EXPR netdev_priv((struct net_device const *)dev) [L5369] tmp = netdev_priv((struct net_device const *)dev) [L5370] return ((struct hdlc_device *)tmp); VAL [\result={18446744073709551619:0}, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, dev={18446744073709551619:-3264}, dev={18446744073709551619:-3264}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={18446744073709551619:0}, tx_queue={12:0}] [L5380] RET, EXPR dev_to_hdlc(dev) VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, dev={18446744073709551619:-3264}, dev={18446744073709551619:-3264}, dev_to_hdlc(dev)={18446744073709551619:0}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5380] tmp = dev_to_hdlc(dev) [L5381] EXPR tmp->state [L5381] return ((struct ppp *)tmp->state); [L5920] RET, EXPR get_ppp(proto___0->dev) VAL [\old(arg)=18446744073709551613, __this_module={18446744073709551625:18446744073709551614}, arg=18446744073709551613, cp_table={13:0}, get_ppp(proto___0->dev)={18446744073709551627:-435}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto___0={0:-3}, proto___0->dev={18446744073709551619:-3264}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5920] tmp = get_ppp(proto___0->dev) [L5921] ppp = tmp VAL [\old(arg)=18446744073709551613, __this_module={18446744073709551625:18446744073709551614}, arg=18446744073709551613, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp={18446744073709551627:-435}, ppp_header_ops={15:0}, proto={14:0}, proto___0={0:-3}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={18446744073709551627:-435}, tx_queue={12:0}] [L5922] CALL, EXPR spinlock_check(& ppp->lock) VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, lock={18446744073709551627:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5137] return (& lock->ldv_6338.rlock); VAL [\result={18446744073709551627:0}, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, lock={18446744073709551627:0}, lock={18446744073709551627:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5922] RET, EXPR spinlock_check(& ppp->lock) VAL [\old(arg)=18446744073709551613, __this_module={18446744073709551625:18446744073709551614}, arg=18446744073709551613, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp={18446744073709551627:-435}, ppp_header_ops={15:0}, proto={14:0}, proto___0={0:-3}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, spinlock_check(& ppp->lock)={18446744073709551627:0}, tmp={18446744073709551627:-435}, tx_queue={12:0}] [L5922] tmp___0 = spinlock_check(& ppp->lock) [L5923] CALL, EXPR _raw_spin_lock_irqsave(tmp___0) VAL [__this_module={18446744073709551625:18446744073709551614}, arg0={18446744073709551627:0}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L6731] return __VERIFIER_nondet_ulong(); [L5923] RET, EXPR _raw_spin_lock_irqsave(tmp___0) VAL [\old(arg)=18446744073709551613, __this_module={18446744073709551625:18446744073709551614}, _raw_spin_lock_irqsave(tmp___0)=18446744073709551624, arg=18446744073709551613, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp={18446744073709551627:-435}, ppp_header_ops={15:0}, proto={14:0}, proto___0={0:-3}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={18446744073709551627:-435}, tmp___0={18446744073709551627:0}, tx_queue={12:0}] [L5923] flags = _raw_spin_lock_irqsave(tmp___0) [L5924] proto___0->state [L5925] case 2: VAL [\old(arg)=18446744073709551613, __this_module={18446744073709551625:18446744073709551614}, arg=18446744073709551613, cp_table={13:0}, flags=8, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp={18446744073709551627:-435}, ppp_header_ops={15:0}, proto={14:0}, proto___0={0:-3}, proto___0->state=-250, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={18446744073709551627:-435}, tmp___0={18446744073709551627:0}, tx_queue={12:0}] [L5926] case 3: VAL [\old(arg)=18446744073709551613, __this_module={18446744073709551625:18446744073709551614}, arg=18446744073709551613, cp_table={13:0}, flags=8, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp={18446744073709551627:-435}, ppp_header_ops={15:0}, proto={14:0}, proto___0={0:-3}, proto___0->state=-250, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={18446744073709551627:-435}, tmp___0={18446744073709551627:0}, tx_queue={12:0}] [L5927] case 4: VAL [\old(arg)=18446744073709551613, __this_module={18446744073709551625:18446744073709551614}, arg=18446744073709551613, cp_table={13:0}, flags=8, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp={18446744073709551627:-435}, ppp_header_ops={15:0}, proto={14:0}, proto___0={0:-3}, proto___0->state=-250, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={18446744073709551627:-435}, tmp___0={18446744073709551627:0}, tx_queue={12:0}] [L5928] case 5: [L5936] case 6: [L5937] EXPR proto___0->pid VAL [\old(arg)=18446744073709551613, __this_module={18446744073709551625:18446744073709551614}, arg=18446744073709551613, cp_table={13:0}, flags=8, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp={18446744073709551627:-435}, ppp_header_ops={15:0}, proto={14:0}, proto___0={0:-3}, proto___0->pid=18, proto___0->state=-250, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={18446744073709551627:-435}, tmp___0={18446744073709551627:0}, tx_queue={12:0}] [L5937] COND TRUE (unsigned int )proto___0->pid != 49185U [L5955] CALL spin_unlock_irqrestore(& ppp->lock, flags) VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5143] FCALL _raw_spin_unlock_irqrestore(& lock->ldv_6338.rlock, flags) [L5955] RET spin_unlock_irqrestore(& ppp->lock, flags) VAL [\old(arg)=18446744073709551613, __this_module={18446744073709551625:18446744073709551614}, arg=18446744073709551613, cp_table={13:0}, flags=8, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp={18446744073709551627:-435}, ppp_header_ops={15:0}, proto={14:0}, proto___0={0:-3}, proto___0->state=-250, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={18446744073709551627:-435}, tmp___0={18446744073709551627:0}, tx_queue={12:0}] [L5956] CALL ppp_tx_flush() VAL [\old(last_index)=0, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5475] struct sk_buff *skb ; VAL [\old(last_index)=0, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5481] CALL, EXPR ldv_skb_dequeue_12(& tx_queue) [L6460] struct sk_buff *tmp ; VAL [\old(last_index)=0, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, ldv_func_arg1={12:0}, ldv_func_arg1={12:0}, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L6462] CALL, EXPR ldv_skb_alloc() VAL [\old(last_index)=0, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L6646] void *skb ; [L6647] void *tmp___7 ; VAL [\old(last_index)=0, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L6649] CALL, EXPR ldv_zalloc(sizeof(struct sk_buff___0 )) VAL [\old(last_index)=0, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5248] void *p ; [L5249] void *tmp ; [L5250] int tmp___0 ; [L5252] tmp___0 = __VERIFIER_nondet_int() [L5253] COND FALSE !(tmp___0 != 0) [L5256] EXPR, FCALL calloc(1UL, size) [L5256] tmp = calloc(1UL, size) [L5257] p = tmp VAL [\old(last_index)=0, \old(size)=248, __this_module={18446744073709551625:18446744073709551614}, calloc(1UL, size)={-18446744073709551617:0}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, p={-18446744073709551617:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, size=248, tmp={-18446744073709551617:0}, tmp___0=0, tx_queue={12:0}] [L5258] CALL assume_abort_if_not((unsigned long )p != (unsigned long )((void *)0)) VAL [\old(cond)=1, \old(last_index)=0, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5227] COND FALSE !(!cond) VAL [\old(cond)=1, \old(last_index)=0, __this_module={18446744073709551625:18446744073709551614}, cond=1, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5258] RET assume_abort_if_not((unsigned long )p != (unsigned long )((void *)0)) VAL [\old(last_index)=0, \old(size)=248, __this_module={18446744073709551625:18446744073709551614}, calloc(1UL, size)={-18446744073709551617:0}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, p={-18446744073709551617:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, size=248, tmp={-18446744073709551617:0}, tmp___0=0, tx_queue={12:0}] [L5259] return (p); VAL [\old(last_index)=0, \old(size)=248, \result={-18446744073709551617:0}, __this_module={18446744073709551625:18446744073709551614}, calloc(1UL, size)={-18446744073709551617:0}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, p={-18446744073709551617:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, size=248, tmp={-18446744073709551617:0}, tmp___0=0, tx_queue={12:0}] [L6649] RET, EXPR ldv_zalloc(sizeof(struct sk_buff___0 )) VAL [\old(last_index)=0, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ldv_zalloc(sizeof(struct sk_buff___0 ))={-18446744073709551617:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L6649] tmp___7 = ldv_zalloc(sizeof(struct sk_buff___0 )) [L6650] skb = (struct sk_buff___0 *)tmp___7 VAL [\old(last_index)=0, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, skb={-18446744073709551617:0}, tmp___7={-18446744073709551617:0}, tx_queue={12:0}] [L6651] COND FALSE !(! skb) [L6654] CALL ldv_set_add(LDV_SKBS, skb) [L6522] int i ; [L6524] i = 0 VAL [\old(last_index)=0, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, e={-18446744073709551617:0}, e={-18446744073709551617:0}, i=0, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={16:0}, tx_queue={12:0}] [L6525] COND TRUE 1 VAL [\old(last_index)=0, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, e={-18446744073709551617:0}, e={-18446744073709551617:0}, i=0, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={16:0}, tx_queue={12:0}] [L6526] COND FALSE !(i < last_index) VAL [\old(last_index)=0, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, e={-18446744073709551617:0}, e={-18446744073709551617:0}, i=0, last_index=0, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={16:0}, tx_queue={12:0}] [L6536] COND TRUE last_index < 15 [L6537] set_impl[last_index] = e [L6538] last_index = last_index + 1 VAL [\old(last_index)=0, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, e={-18446744073709551617:0}, e={-18446744073709551617:0}, i=0, last_index=1, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={16:0}, tx_queue={12:0}] [L6654] RET ldv_set_add(LDV_SKBS, skb) [L6655] return (skb); VAL [\old(last_index)=0, \result={-18446744073709551617:0}, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=1, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, skb={-18446744073709551617:0}, tmp___7={-18446744073709551617:0}, tx_queue={12:0}] [L6462] RET, EXPR ldv_skb_alloc() VAL [\old(last_index)=0, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=1, ldv_func_arg1={12:0}, ldv_func_arg1={12:0}, LDV_IN_INTERRUPT=2, ldv_retval_0=0, ldv_skb_alloc()={-18446744073709551617:0}, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L6462] tmp = ldv_skb_alloc() [L6463] return (tmp); VAL [\old(last_index)=0, \result={-18446744073709551617:0}, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=1, ldv_func_arg1={12:0}, ldv_func_arg1={12:0}, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={-18446744073709551617:0}, tx_queue={12:0}] [L5481] RET, EXPR ldv_skb_dequeue_12(& tx_queue) [L5481] skb = ldv_skb_dequeue_12(& tx_queue) [L5482] COND TRUE (unsigned long )skb != (unsigned long )((struct sk_buff *)0) VAL [\old(last_index)=0, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=1, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, skb={-18446744073709551617:0}, tx_queue={12:0}] [L5479] CALL dev_queue_xmit(skb) [L6753] return __VERIFIER_nondet_int(); [L5479] RET dev_queue_xmit(skb) [L5481] CALL, EXPR ldv_skb_dequeue_12(& tx_queue) [L6460] struct sk_buff *tmp ; VAL [\old(last_index)=0, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=1, ldv_func_arg1={12:0}, ldv_func_arg1={12:0}, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L6462] CALL, EXPR ldv_skb_alloc() VAL [\old(last_index)=1, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=1, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L6646] void *skb ; [L6647] void *tmp___7 ; VAL [\old(last_index)=1, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=1, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L6649] CALL, EXPR ldv_zalloc(sizeof(struct sk_buff___0 )) VAL [\old(last_index)=1, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=1, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5248] void *p ; [L5249] void *tmp ; [L5250] int tmp___0 ; [L5252] tmp___0 = __VERIFIER_nondet_int() [L5253] COND TRUE tmp___0 != 0 [L5254] return ((void *)0); VAL [\old(last_index)=1, \old(size)=248, \result={0:0}, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=1, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, size=248, tmp___0=1, tx_queue={12:0}] [L6649] RET, EXPR ldv_zalloc(sizeof(struct sk_buff___0 )) VAL [\old(last_index)=1, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=1, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ldv_zalloc(sizeof(struct sk_buff___0 ))={0:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L6649] tmp___7 = ldv_zalloc(sizeof(struct sk_buff___0 )) [L6650] skb = (struct sk_buff___0 *)tmp___7 VAL [\old(last_index)=1, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=1, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, skb={0:0}, tmp___7={0:0}, tx_queue={12:0}] [L6651] COND TRUE ! skb [L6652] return ((void *)0); VAL [\old(last_index)=1, \result={0:0}, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=1, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, skb={0:0}, tmp___7={0:0}, tx_queue={12:0}] [L6462] RET, EXPR ldv_skb_alloc() VAL [\old(last_index)=0, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=1, ldv_func_arg1={12:0}, ldv_func_arg1={12:0}, LDV_IN_INTERRUPT=2, ldv_retval_0=0, ldv_skb_alloc()={0:0}, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L6462] tmp = ldv_skb_alloc() [L6463] return (tmp); VAL [\old(last_index)=0, \result={0:0}, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=1, ldv_func_arg1={12:0}, ldv_func_arg1={12:0}, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={0:0}, tx_queue={12:0}] [L5481] RET, EXPR ldv_skb_dequeue_12(& tx_queue) [L5481] skb = ldv_skb_dequeue_12(& tx_queue) [L5482] COND FALSE !((unsigned long )skb != (unsigned long )((struct sk_buff *)0)) VAL [\old(last_index)=0, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=1, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, skb={0:0}, tx_queue={12:0}] [L5956] RET ppp_tx_flush() VAL [\old(arg)=18446744073709551613, __this_module={18446744073709551625:18446744073709551614}, arg=18446744073709551613, cp_table={13:0}, flags=8, last_index=1, LDV_IN_INTERRUPT=2, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=0, ppp={18446744073709551627:-435}, ppp_header_ops={15:0}, proto={14:0}, proto___0={0:-3}, proto___0->state=-250, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={18446744073709551627:-435}, tmp___0={18446744073709551627:0}, tx_queue={12:0}] [L6129] RET (*(timer->function))(timer->data) [L6130] LDV_IN_INTERRUPT = 1 [L6131] ldv_timer_state_1 = 2 VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=2, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, timer={0:0}, timer={0:0}, tx_queue={12:0}] [L6200] RET choose_timer_1(ldv_timer_list_1) [L6196] tmp___6 = __VERIFIER_nondet_int() [L6198] case 0: [L6204] case 1: VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=2, ldvarg0={0:0}, ldvarg1=0, ldvarg2={0:0}, ldvarg3={0:0}, ldvarg4=10, ldvarg5={0:0}, ldvarg6={0:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={0:0}, tmp___0=0, tmp___1=10, tmp___2={0:0}, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=1, tmp___7=1, tx_queue={12:0}] [L6205] COND TRUE ldv_state_variable_0 != 0 [L6206] tmp___7 = __VERIFIER_nondet_int() [L6208] case 0: VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=2, ldvarg0={0:0}, ldvarg1=0, ldvarg2={0:0}, ldvarg3={0:0}, ldvarg4=10, ldvarg5={0:0}, ldvarg6={0:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={0:0}, tmp___0=0, tmp___1=10, tmp___2={0:0}, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=1, tmp___7=0, tx_queue={12:0}] [L6209] COND TRUE ldv_state_variable_0 == 3 && ref_cnt == 0 [L6210] CALL mod_exit() [L6084] FCALL unregister_hdlc_protocol(& proto) [L6210] RET mod_exit() [L6211] ldv_state_variable_0 = 2 VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=2, ldvarg0={0:0}, ldvarg1=0, ldvarg2={0:0}, ldvarg3={0:0}, ldvarg4=10, ldvarg5={0:0}, ldvarg6={0:0}, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp={0:0}, tmp___0=0, tmp___1=10, tmp___2={0:0}, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=1, tmp___7=0, tx_queue={12:0}] [L6419] CALL ldv_check_final_state() [L6713] int tmp___7 ; [L6715] CALL, EXPR ldv_set_is_empty(LDV_SKBS) [L6604] return (last_index == 0); VAL [\result=0, __this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=2, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={16:0}, tx_queue={12:0}] [L6715] RET, EXPR ldv_set_is_empty(LDV_SKBS) [L6715] tmp___7 = ldv_set_is_empty(LDV_SKBS) [L6716] COND FALSE !(\read(tmp___7)) VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=2, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tmp___7=0, tx_queue={12:0}] [L6718] CALL ldv_error() VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=2, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] [L5283] reach_error() VAL [__this_module={18446744073709551625:18446744073709551614}, cp_table={13:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, LDV_SKBS={0:0}, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_state_variable_3=1, ldv_timer_list_1={0:0}, ldv_timer_state_1=2, ppp_header_ops={15:0}, proto={14:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={16:0}, tx_queue={12:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 34 procedures, 594 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.4s, OverallIterations: 10, TraceHistogramMax: 9, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 10.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7467 SdHoareTripleChecker+Valid, 8.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7088 mSDsluCounter, 32385 SdHoareTripleChecker+Invalid, 7.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23038 mSDsCounter, 2307 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6824 IncrementalHoareTripleChecker+Invalid, 9131 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2307 mSolverCounterUnsat, 9347 mSDtfsCounter, 6824 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 586 GetRequests, 523 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4607occurred in iteration=9, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 2791 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 1479 NumberOfCodeBlocks, 1479 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1297 ConstructedInterpolants, 0 QuantifiedInterpolants, 2627 SizeOfPredicates, 4 NumberOfNonLiveVariables, 2516 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 11 InterpolantComputations, 9 PerfectInterpolantSequences, 1167/1175 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 21:45:54,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e195c92-1988-4d5f-b9ac-0cd68c437c69/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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