./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.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=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 a900a56caf1252bf2b77371f0836914c913e44b231203ecd4eebd687a96fd0c2 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:47:33,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:47:33,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:47:33,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:47:33,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:47:33,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:47:33,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:47:33,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:47:33,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:47:33,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:47:33,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:47:33,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:47:33,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:47:33,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:47:33,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:47:33,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:47:33,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:47:33,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:47:33,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:47:33,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:47:33,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:47:33,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:47:33,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:47:33,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:47:33,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:47:33,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:47:33,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:47:33,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:47:33,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:47:33,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:47:33,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:47:33,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:47:33,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:47:33,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:47:33,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:47:33,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:47:33,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:47:33,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:47:33,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:47:33,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:47:33,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:47:33,223 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:47:33,248 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:47:33,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:47:33,249 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:47:33,249 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:47:33,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:47:33,250 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:47:33,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:47:33,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:47:33,250 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:47:33,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:47:33,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:47:33,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:47:33,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:47:33,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:47:33,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:47:33,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:47:33,252 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:47:33,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:47:33,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:47:33,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:47:33,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:47:33,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:47:33,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:47:33,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:47:33,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:47:33,253 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:47:33,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:47:33,255 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:47:33,255 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:47:33,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:47:33,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:47:33,255 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a900a56caf1252bf2b77371f0836914c913e44b231203ecd4eebd687a96fd0c2 [2021-12-14 17:47:33,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:47:33,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:47:33,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:47:33,501 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:47:33,501 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:47:33,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2021-12-14 17:47:33,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e01a9e196/aa66c627bff2485d8a656b1dc143e2d6/FLAG2225fb273 [2021-12-14 17:47:34,086 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:47:34,087 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2021-12-14 17:47:34,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e01a9e196/aa66c627bff2485d8a656b1dc143e2d6/FLAG2225fb273 [2021-12-14 17:47:34,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e01a9e196/aa66c627bff2485d8a656b1dc143e2d6 [2021-12-14 17:47:34,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:47:34,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:47:34,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:47:34,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:47:34,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:47:34,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:47:34" (1/1) ... [2021-12-14 17:47:34,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30dcd750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:34, skipping insertion in model container [2021-12-14 17:47:34,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:47:34" (1/1) ... [2021-12-14 17:47:34,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:47:34,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:47:34,816 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5986] [2021-12-14 17:47:34,816 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5987-5988] [2021-12-14 17:47:35,094 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i[188410,188423] [2021-12-14 17:47:35,845 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:47:35,876 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:47:35,958 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5986] [2021-12-14 17:47:35,960 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5987-5988] [2021-12-14 17:47:35,971 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i[188410,188423] [2021-12-14 17:47:36,177 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:47:36,292 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:47:36,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:36 WrapperNode [2021-12-14 17:47:36,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:47:36,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:47:36,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:47:36,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:47:36,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:36" (1/1) ... [2021-12-14 17:47:36,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:36" (1/1) ... [2021-12-14 17:47:36,504 INFO L137 Inliner]: procedures = 350, calls = 2000, calls flagged for inlining = 171, calls inlined = 139, statements flattened = 4668 [2021-12-14 17:47:36,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:47:36,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:47:36,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:47:36,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:47:36,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:36" (1/1) ... [2021-12-14 17:47:36,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:36" (1/1) ... [2021-12-14 17:47:36,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:36" (1/1) ... [2021-12-14 17:47:36,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:36" (1/1) ... [2021-12-14 17:47:36,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:36" (1/1) ... [2021-12-14 17:47:36,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:36" (1/1) ... [2021-12-14 17:47:36,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:36" (1/1) ... [2021-12-14 17:47:36,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:47:36,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:47:36,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:47:36,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:47:36,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:36" (1/1) ... [2021-12-14 17:47:36,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:47:36,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:47:36,757 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:47:36,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:47:36,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:47:36,804 INFO L130 BoogieDeclarations]: Found specification of procedure get_page [2021-12-14 17:47:36,805 INFO L138 BoogieDeclarations]: Found implementation of procedure get_page [2021-12-14 17:47:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:47:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_release_tx_bufs [2021-12-14 17:47:36,805 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_release_tx_bufs [2021-12-14 17:47:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 17:47:36,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 17:47:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-12-14 17:47:36,805 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-12-14 17:47:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2021-12-14 17:47:36,806 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2021-12-14 17:47:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_change_mtu [2021-12-14 17:47:36,806 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_change_mtu [2021-12-14 17:47:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-12-14 17:47:36,806 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-12-14 17:47:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_write [2021-12-14 17:47:36,806 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_write [2021-12-14 17:47:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-12-14 17:47:36,807 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-12-14 17:47:36,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-14 17:47:36,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-14 17:47:36,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:47:36,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:47:36,807 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-12-14 17:47:36,807 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-12-14 17:47:36,807 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_update_begin [2021-12-14 17:47:36,807 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_update_begin [2021-12-14 17:47:36,808 INFO L130 BoogieDeclarations]: Found specification of procedure bind_evtchn_to_irqhandler [2021-12-14 17:47:36,808 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_evtchn_to_irqhandler [2021-12-14 17:47:36,808 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2021-12-14 17:47:36,808 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2021-12-14 17:47:36,808 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_remove [2021-12-14 17:47:36,808 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_remove [2021-12-14 17:47:36,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:47:36,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:47:36,809 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-12-14 17:47:36,809 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-12-14 17:47:36,809 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-14 17:47:36,809 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-14 17:47:36,809 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_grant_ring [2021-12-14 17:47:36,809 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_grant_ring [2021-12-14 17:47:36,810 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-14 17:47:36,810 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-14 17:47:36,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 17:47:36,810 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 17:47:36,810 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_claim_grant_reference [2021-12-14 17:47:36,810 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_claim_grant_reference [2021-12-14 17:47:36,810 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:47:36,810 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:47:36,811 INFO L130 BoogieDeclarations]: Found specification of procedure netif_set_real_num_tx_queues [2021-12-14 17:47:36,811 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_set_real_num_tx_queues [2021-12-14 17:47:36,811 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access [2021-12-14 17:47:36,812 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access [2021-12-14 17:47:36,812 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_disconnect_backend [2021-12-14 17:47:36,812 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_disconnect_backend [2021-12-14 17:47:36,812 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_stats64 [2021-12-14 17:47:36,812 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_stats64 [2021-12-14 17:47:36,813 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 17:47:36,813 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 17:47:36,813 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_alloc_evtchn [2021-12-14 17:47:36,813 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_alloc_evtchn [2021-12-14 17:47:36,813 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-12-14 17:47:36,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-12-14 17:47:36,813 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_alloc_grant_references [2021-12-14 17:47:36,813 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_alloc_grant_references [2021-12-14 17:47:36,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:47:36,814 INFO L130 BoogieDeclarations]: Found specification of procedure netfront_tx_slot_available [2021-12-14 17:47:36,814 INFO L138 BoogieDeclarations]: Found implementation of procedure netfront_tx_slot_available [2021-12-14 17:47:36,814 INFO L130 BoogieDeclarations]: Found specification of procedure notify_remote_via_irq [2021-12-14 17:47:36,814 INFO L138 BoogieDeclarations]: Found implementation of procedure notify_remote_via_irq [2021-12-14 17:47:36,814 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_release_grant_reference [2021-12-14 17:47:36,814 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_release_grant_reference [2021-12-14 17:47:36,815 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-12-14 17:47:36,815 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-12-14 17:47:36,815 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_can_sg [2021-12-14 17:47:36,815 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_can_sg [2021-12-14 17:47:36,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:47:36,815 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-12-14 17:47:36,815 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-12-14 17:47:36,815 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-14 17:47:36,816 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-14 17:47:36,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-14 17:47:36,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-14 17:47:36,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-12-14 17:47:36,816 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2021-12-14 17:47:36,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2021-12-14 17:47:36,817 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rxidx [2021-12-14 17:47:36,817 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rxidx [2021-12-14 17:47:36,817 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 17:47:36,817 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 17:47:36,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:47:36,818 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2021-12-14 17:47:36,818 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2021-12-14 17:47:36,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:47:36,818 INFO L130 BoogieDeclarations]: Found specification of procedure write_queue_xenstore_keys [2021-12-14 17:47:36,818 INFO L138 BoogieDeclarations]: Found implementation of procedure write_queue_xenstore_keys [2021-12-14 17:47:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure pfn_to_mfn [2021-12-14 17:47:36,819 INFO L138 BoogieDeclarations]: Found implementation of procedure pfn_to_mfn [2021-12-14 17:47:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-12-14 17:47:36,819 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-12-14 17:47:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure add_id_to_freelist [2021-12-14 17:47:36,819 INFO L138 BoogieDeclarations]: Found implementation of procedure add_id_to_freelist [2021-12-14 17:47:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_alloc_rx_buffers [2021-12-14 17:47:36,819 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_alloc_rx_buffers [2021-12-14 17:47:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure skb_entry_set_link [2021-12-14 17:47:36,820 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_entry_set_link [2021-12-14 17:47:36,820 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-14 17:47:36,820 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-14 17:47:36,820 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-14 17:47:36,820 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-14 17:47:36,820 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-12-14 17:47:36,821 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-12-14 17:47:36,821 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2021-12-14 17:47:36,821 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2021-12-14 17:47:36,823 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access_ref [2021-12-14 17:47:36,823 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access_ref [2021-12-14 17:47:36,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:47:36,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-14 17:47:36,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-14 17:47:36,825 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-12-14 17:47:36,825 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-12-14 17:47:36,825 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_free_grant_references [2021-12-14 17:47:36,825 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_free_grant_references [2021-12-14 17:47:36,829 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2021-12-14 17:47:36,829 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2021-12-14 17:47:36,830 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-14 17:47:36,830 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-14 17:47:36,830 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-14 17:47:36,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-14 17:47:36,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:47:36,830 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2021-12-14 17:47:36,830 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2021-12-14 17:47:36,830 INFO L130 BoogieDeclarations]: Found specification of procedure get_zeroed_page [2021-12-14 17:47:36,830 INFO L138 BoogieDeclarations]: Found implementation of procedure get_zeroed_page [2021-12-14 17:47:36,830 INFO L130 BoogieDeclarations]: Found specification of procedure netback_changed [2021-12-14 17:47:36,830 INFO L138 BoogieDeclarations]: Found implementation of procedure netback_changed [2021-12-14 17:47:36,831 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_poll_controller [2021-12-14 17:47:36,831 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_poll_controller [2021-12-14 17:47:36,831 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2021-12-14 17:47:36,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2021-12-14 17:47:36,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:47:36,831 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-14 17:47:36,831 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-14 17:47:36,831 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-14 17:47:36,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-14 17:47:36,831 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2021-12-14 17:47:36,832 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2021-12-14 17:47:36,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 17:47:36,832 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 17:47:36,832 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_select_queue [2021-12-14 17:47:36,832 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_select_queue [2021-12-14 17:47:36,832 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_end_access [2021-12-14 17:47:36,832 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_end_access [2021-12-14 17:47:36,832 INFO L130 BoogieDeclarations]: Found specification of procedure skb_get [2021-12-14 17:47:36,832 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_get [2021-12-14 17:47:36,832 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-14 17:47:36,833 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-14 17:47:36,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-14 17:47:36,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-14 17:47:36,833 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_ref [2021-12-14 17:47:36,833 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_ref [2021-12-14 17:47:36,833 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:47:36,833 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:47:36,833 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2021-12-14 17:47:36,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2021-12-14 17:47:36,833 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2021-12-14 17:47:36,833 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2021-12-14 17:47:36,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:47:36,834 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2021-12-14 17:47:36,834 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2021-12-14 17:47:36,834 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-14 17:47:36,834 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-14 17:47:36,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:47:36,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:47:36,834 INFO L130 BoogieDeclarations]: Found specification of procedure get_id_from_freelist [2021-12-14 17:47:36,834 INFO L138 BoogieDeclarations]: Found implementation of procedure get_id_from_freelist [2021-12-14 17:47:36,834 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2021-12-14 17:47:36,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2021-12-14 17:47:36,835 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_fix_features [2021-12-14 17:47:36,835 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_fix_features [2021-12-14 17:47:36,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:47:36,835 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-12-14 17:47:36,835 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-12-14 17:47:36,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:47:36,835 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-12-14 17:47:36,835 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-12-14 17:47:36,835 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2021-12-14 17:47:36,836 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2021-12-14 17:47:36,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:47:36,836 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-12-14 17:47:36,836 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-12-14 17:47:36,836 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-12-14 17:47:36,836 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-12-14 17:47:36,836 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-14 17:47:36,836 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-14 17:47:36,836 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-12-14 17:47:36,836 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-12-14 17:47:36,837 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-12-14 17:47:36,837 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-12-14 17:47:36,837 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2021-12-14 17:47:36,837 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2021-12-14 17:47:36,837 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-14 17:47:36,837 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-14 17:47:36,837 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2021-12-14 17:47:36,837 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2021-12-14 17:47:36,837 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_grant_foreign_access_ref [2021-12-14 17:47:36,837 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_grant_foreign_access_ref [2021-12-14 17:47:36,837 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-14 17:47:36,838 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-14 17:47:36,838 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_set_features [2021-12-14 17:47:36,838 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_set_features [2021-12-14 17:47:36,838 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-12-14 17:47:36,838 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-12-14 17:47:36,838 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-14 17:47:36,838 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-14 17:47:36,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:47:36,838 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-12-14 17:47:36,838 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-12-14 17:47:36,839 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2021-12-14 17:47:36,839 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2021-12-14 17:47:36,839 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_free_evtchn [2021-12-14 17:47:36,839 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_free_evtchn [2021-12-14 17:47:36,839 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_skb [2021-12-14 17:47:36,839 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_skb [2021-12-14 17:47:36,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:47:36,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:47:36,839 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_buf_gc [2021-12-14 17:47:36,839 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_buf_gc [2021-12-14 17:47:36,840 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-12-14 17:47:36,840 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-12-14 17:47:36,840 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-14 17:47:36,840 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-14 17:47:37,410 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:47:37,413 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:47:37,976 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 17:47:44,524 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:47:44,535 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:47:44,535 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 17:47:44,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:47:44 BoogieIcfgContainer [2021-12-14 17:47:44,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:47:44,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:47:44,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:47:44,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:47:44,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:47:34" (1/3) ... [2021-12-14 17:47:44,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@609836fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:47:44, skipping insertion in model container [2021-12-14 17:47:44,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:36" (2/3) ... [2021-12-14 17:47:44,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@609836fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:47:44, skipping insertion in model container [2021-12-14 17:47:44,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:47:44" (3/3) ... [2021-12-14 17:47:44,543 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2021-12-14 17:47:44,546 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:47:44,546 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:47:44,583 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:47:44,587 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 [2021-12-14 17:47:44,588 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:47:44,621 INFO L276 IsEmpty]: Start isEmpty. Operand has 1587 states, 1111 states have (on average 1.297029702970297) internal successors, (1441), 1141 states have internal predecessors, (1441), 367 states have call successors, (367), 108 states have call predecessors, (367), 107 states have return successors, (362), 360 states have call predecessors, (362), 362 states have call successors, (362) [2021-12-14 17:47:44,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-14 17:47:44,659 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:47:44,660 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 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] [2021-12-14 17:47:44,660 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:47:44,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:47:44,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1077420318, now seen corresponding path program 1 times [2021-12-14 17:47:44,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:47:44,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728199371] [2021-12-14 17:47:44,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:47:44,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:47:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:45,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:47:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:45,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:47:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:45,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:47:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:45,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:47:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:45,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:47:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:45,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:47:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:45,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:47:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:45,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:47:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:45,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:47:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:45,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 17:47:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:45,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:47:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:45,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 17:47:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:45,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 17:47:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:45,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 17:47:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:45,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 17:47:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:45,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-14 17:47:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:45,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 17:47:45,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:45,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:47:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:45,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 17:47:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:45,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:47:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:45,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-14 17:47:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:45,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:47:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:45,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 17:47:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:45,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-14 17:47:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:45,347 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-12-14 17:47:45,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:47:45,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728199371] [2021-12-14 17:47:45,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728199371] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:47:45,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:47:45,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:47:45,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239917267] [2021-12-14 17:47:45,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:47:45,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:47:45,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:47:45,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:47:45,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:47:45,383 INFO L87 Difference]: Start difference. First operand has 1587 states, 1111 states have (on average 1.297029702970297) internal successors, (1441), 1141 states have internal predecessors, (1441), 367 states have call successors, (367), 108 states have call predecessors, (367), 107 states have return successors, (362), 360 states have call predecessors, (362), 362 states have call successors, (362) Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-14 17:47:51,178 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:47:53,565 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:47:56,210 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:47:58,497 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:48:00,821 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:48:01,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:48:01,905 INFO L93 Difference]: Finished difference Result 4573 states and 6357 transitions. [2021-12-14 17:48:01,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 17:48:01,929 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 162 [2021-12-14 17:48:01,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:48:01,971 INFO L225 Difference]: With dead ends: 4573 [2021-12-14 17:48:01,971 INFO L226 Difference]: Without dead ends: 2943 [2021-12-14 17:48:01,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-12-14 17:48:01,987 INFO L933 BasicCegarLoop]: 2150 mSDtfsCounter, 3983 mSDsluCounter, 3482 mSDsCounter, 0 mSdLazyCounter, 3608 mSolverCounterSat, 2801 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4209 SdHoareTripleChecker+Valid, 5632 SdHoareTripleChecker+Invalid, 6414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2801 IncrementalHoareTripleChecker+Valid, 3608 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:48:01,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4209 Valid, 5632 Invalid, 6414 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2801 Valid, 3608 Invalid, 5 Unknown, 0 Unchecked, 16.0s Time] [2021-12-14 17:48:02,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2021-12-14 17:48:02,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 2569. [2021-12-14 17:48:02,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2569 states, 1803 states have (on average 1.2784248474764282) internal successors, (2305), 1846 states have internal predecessors, (2305), 572 states have call successors, (572), 193 states have call predecessors, (572), 193 states have return successors, (576), 562 states have call predecessors, (576), 571 states have call successors, (576) [2021-12-14 17:48:02,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2569 states to 2569 states and 3453 transitions. [2021-12-14 17:48:02,170 INFO L78 Accepts]: Start accepts. Automaton has 2569 states and 3453 transitions. Word has length 162 [2021-12-14 17:48:02,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:48:02,172 INFO L470 AbstractCegarLoop]: Abstraction has 2569 states and 3453 transitions. [2021-12-14 17:48:02,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-14 17:48:02,172 INFO L276 IsEmpty]: Start isEmpty. Operand 2569 states and 3453 transitions. [2021-12-14 17:48:02,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-14 17:48:02,183 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:48:02,183 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:48:02,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:48:02,184 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:48:02,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:48:02,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1609982772, now seen corresponding path program 1 times [2021-12-14 17:48:02,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:48:02,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013137720] [2021-12-14 17:48:02,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:48:02,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:48:02,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:02,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:48:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:02,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:48:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:02,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:48:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:02,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:48:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:02,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:48:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:02,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:48:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:02,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:48:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:02,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:48:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:02,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:48:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:02,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 17:48:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:02,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:48:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:02,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 17:48:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:02,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:48:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:02,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 17:48:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:02,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 17:48:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:02,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-14 17:48:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:02,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 17:48:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:02,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:48:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:02,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-14 17:48:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:02,483 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-12-14 17:48:02,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:48:02,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013137720] [2021-12-14 17:48:02,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013137720] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:48:02,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:48:02,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:48:02,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805241561] [2021-12-14 17:48:02,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:48:02,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:48:02,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:48:02,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:48:02,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:48:02,487 INFO L87 Difference]: Start difference. First operand 2569 states and 3453 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (22), 5 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-14 17:48:08,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:48:10,745 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:48:12,822 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:48:15,156 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:48:17,238 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:48:19,498 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:48:21,733 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:48:22,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:48:22,614 INFO L93 Difference]: Finished difference Result 6794 states and 9260 transitions. [2021-12-14 17:48:22,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:48:22,615 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (22), 5 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2021-12-14 17:48:22,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:48:22,631 INFO L225 Difference]: With dead ends: 6794 [2021-12-14 17:48:22,632 INFO L226 Difference]: Without dead ends: 4252 [2021-12-14 17:48:22,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:48:22,640 INFO L933 BasicCegarLoop]: 2928 mSDtfsCounter, 2425 mSDsluCounter, 5034 mSDsCounter, 0 mSdLazyCounter, 3595 mSolverCounterSat, 1444 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2666 SdHoareTripleChecker+Valid, 7962 SdHoareTripleChecker+Invalid, 5046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1444 IncrementalHoareTripleChecker+Valid, 3595 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:48:22,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2666 Valid, 7962 Invalid, 5046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1444 Valid, 3595 Invalid, 7 Unknown, 0 Unchecked, 19.8s Time] [2021-12-14 17:48:22,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4252 states. [2021-12-14 17:48:22,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4252 to 3705. [2021-12-14 17:48:22,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3705 states, 2615 states have (on average 1.2822179732313574) internal successors, (3353), 2674 states have internal predecessors, (3353), 814 states have call successors, (814), 273 states have call predecessors, (814), 275 states have return successors, (833), 804 states have call predecessors, (833), 813 states have call successors, (833) [2021-12-14 17:48:22,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3705 states to 3705 states and 5000 transitions. [2021-12-14 17:48:22,751 INFO L78 Accepts]: Start accepts. Automaton has 3705 states and 5000 transitions. Word has length 155 [2021-12-14 17:48:22,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:48:22,752 INFO L470 AbstractCegarLoop]: Abstraction has 3705 states and 5000 transitions. [2021-12-14 17:48:22,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (22), 5 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-14 17:48:22,752 INFO L276 IsEmpty]: Start isEmpty. Operand 3705 states and 5000 transitions. [2021-12-14 17:48:22,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-12-14 17:48:22,756 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:48:22,756 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:48:22,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:48:22,756 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:48:22,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:48:22,757 INFO L85 PathProgramCache]: Analyzing trace with hash 356772008, now seen corresponding path program 1 times [2021-12-14 17:48:22,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:48:22,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559293672] [2021-12-14 17:48:22,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:48:22,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:48:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:22,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:48:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:22,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:48:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:22,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:48:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:22,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:48:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:22,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:48:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:22,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:48:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:22,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:48:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:22,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:48:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:22,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:48:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:22,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 17:48:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:22,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:48:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:22,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 17:48:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:22,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 17:48:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:22,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:48:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:22,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 17:48:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:23,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-14 17:48:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:23,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 17:48:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:23,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-14 17:48:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:23,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-14 17:48:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:23,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:48:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:23,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-14 17:48:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:23,048 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-14 17:48:23,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:48:23,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559293672] [2021-12-14 17:48:23,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559293672] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:48:23,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:48:23,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:48:23,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725822828] [2021-12-14 17:48:23,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:48:23,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:48:23,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:48:23,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:48:23,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:48:23,051 INFO L87 Difference]: Start difference. First operand 3705 states and 5000 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-14 17:48:27,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:48:29,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:48:31,985 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:48:34,067 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:48:36,800 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:48:38,892 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:48:40,977 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:48:43,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []