./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 e19ca921 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-dev-e19ca92 [2021-12-22 14:41:44,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:41:44,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:41:44,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:41:44,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:41:44,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:41:44,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:41:44,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:41:44,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:41:44,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:41:44,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:41:44,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:41:44,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:41:44,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:41:44,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:41:44,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:41:44,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:41:44,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:41:44,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:41:44,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:41:44,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:41:44,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:41:44,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:41:44,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:41:44,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:41:44,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:41:44,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:41:44,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:41:44,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:41:44,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:41:44,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:41:44,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:41:44,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:41:44,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:41:44,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:41:44,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:41:44,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:41:44,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:41:44,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:41:44,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:41:44,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:41:44,818 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:41:44,832 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:41:44,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:41:44,833 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:41:44,833 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:41:44,833 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:41:44,833 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:41:44,834 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:41:44,834 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:41:44,834 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:41:44,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:41:44,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:41:44,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:41:44,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:41:44,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:41:44,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:41:44,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:41:44,836 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:41:44,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:41:44,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:41:44,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:41:44,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:41:44,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:41:44,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:41:44,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:41:44,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:41:44,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:41:44,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:41:44,838 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:41:44,838 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:41:44,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:41:44,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:41:44,839 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a900a56caf1252bf2b77371f0836914c913e44b231203ecd4eebd687a96fd0c2 [2021-12-22 14:41:45,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:41:45,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:41:45,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:41:45,037 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:41:45,038 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:41:45,039 INFO L432 ainManager$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 [2021-12-22 14:41:45,102 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72db8ab08/b79d99d3740c46b2ac15077d46dbb073/FLAGa1a30b217 [2021-12-22 14:41:45,764 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:41:45,764 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 [2021-12-22 14:41:45,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72db8ab08/b79d99d3740c46b2ac15077d46dbb073/FLAGa1a30b217 [2021-12-22 14:41:46,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72db8ab08/b79d99d3740c46b2ac15077d46dbb073 [2021-12-22 14:41:46,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:41:46,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:41:46,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:41:46,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:41:46,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:41:46,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:41:46" (1/1) ... [2021-12-22 14:41:46,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ec19244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:41:46, skipping insertion in model container [2021-12-22 14:41:46,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:41:46" (1/1) ... [2021-12-22 14:41:46,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:41:46,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:41:46,606 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5986] [2021-12-22 14:41:46,606 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] [2021-12-22 14:41:47,137 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] [2021-12-22 14:41:48,192 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:41:48,225 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:41:48,323 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5986] [2021-12-22 14:41:48,324 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] [2021-12-22 14:41:48,336 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] [2021-12-22 14:41:48,527 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:41:48,711 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:41:48,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:41:48 WrapperNode [2021-12-22 14:41:48,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:41:48,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:41:48,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:41:48,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:41:48,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:41:48" (1/1) ... [2021-12-22 14:41:48,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:41:48" (1/1) ... [2021-12-22 14:41:48,946 INFO L137 Inliner]: procedures = 350, calls = 2000, calls flagged for inlining = 171, calls inlined = 139, statements flattened = 4668 [2021-12-22 14:41:48,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:41:48,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:41:48,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:41:48,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:41:48,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:41:48" (1/1) ... [2021-12-22 14:41:48,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:41:48" (1/1) ... [2021-12-22 14:41:48,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:41:48" (1/1) ... [2021-12-22 14:41:48,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:41:48" (1/1) ... [2021-12-22 14:41:49,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:41:48" (1/1) ... [2021-12-22 14:41:49,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:41:48" (1/1) ... [2021-12-22 14:41:49,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:41:48" (1/1) ... [2021-12-22 14:41:49,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:41:49,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:41:49,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:41:49,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:41:49,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:41:48" (1/1) ... [2021-12-22 14:41:49,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:41:49,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:41:49,169 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) [2021-12-22 14:41:49,184 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 [2021-12-22 14:41:49,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 14:41:49,235 INFO L130 BoogieDeclarations]: Found specification of procedure get_page [2021-12-22 14:41:49,235 INFO L138 BoogieDeclarations]: Found implementation of procedure get_page [2021-12-22 14:41:49,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 14:41:49,235 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_release_tx_bufs [2021-12-22 14:41:49,238 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_release_tx_bufs [2021-12-22 14:41:49,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-22 14:41:49,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-22 14:41:49,238 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-12-22 14:41:49,238 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-12-22 14:41:49,238 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2021-12-22 14:41:49,239 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2021-12-22 14:41:49,239 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_change_mtu [2021-12-22 14:41:49,239 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_change_mtu [2021-12-22 14:41:49,239 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-12-22 14:41:49,239 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-12-22 14:41:49,239 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_write [2021-12-22 14:41:49,239 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_write [2021-12-22 14:41:49,239 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-12-22 14:41:49,239 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-12-22 14:41:49,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-22 14:41:49,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-22 14:41:49,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:41:49,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:41:49,241 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-12-22 14:41:49,241 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-12-22 14:41:49,241 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_update_begin [2021-12-22 14:41:49,241 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_update_begin [2021-12-22 14:41:49,241 INFO L130 BoogieDeclarations]: Found specification of procedure bind_evtchn_to_irqhandler [2021-12-22 14:41:49,241 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_evtchn_to_irqhandler [2021-12-22 14:41:49,241 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2021-12-22 14:41:49,241 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2021-12-22 14:41:49,241 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_remove [2021-12-22 14:41:49,242 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_remove [2021-12-22 14:41:49,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:41:49,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:41:49,242 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-12-22 14:41:49,242 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-12-22 14:41:49,242 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-22 14:41:49,242 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-22 14:41:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_grant_ring [2021-12-22 14:41:49,243 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_grant_ring [2021-12-22 14:41:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-22 14:41:49,243 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-22 14:41:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-22 14:41:49,243 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-22 14:41:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_claim_grant_reference [2021-12-22 14:41:49,243 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_claim_grant_reference [2021-12-22 14:41:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 14:41:49,244 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 14:41:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure netif_set_real_num_tx_queues [2021-12-22 14:41:49,244 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_set_real_num_tx_queues [2021-12-22 14:41:49,245 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access [2021-12-22 14:41:49,245 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access [2021-12-22 14:41:49,245 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_disconnect_backend [2021-12-22 14:41:49,246 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_disconnect_backend [2021-12-22 14:41:49,247 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_stats64 [2021-12-22 14:41:49,247 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_stats64 [2021-12-22 14:41:49,247 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-22 14:41:49,247 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-22 14:41:49,247 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_alloc_evtchn [2021-12-22 14:41:49,247 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_alloc_evtchn [2021-12-22 14:41:49,247 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-12-22 14:41:49,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-12-22 14:41:49,248 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_alloc_grant_references [2021-12-22 14:41:49,248 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_alloc_grant_references [2021-12-22 14:41:49,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:41:49,248 INFO L130 BoogieDeclarations]: Found specification of procedure netfront_tx_slot_available [2021-12-22 14:41:49,249 INFO L138 BoogieDeclarations]: Found implementation of procedure netfront_tx_slot_available [2021-12-22 14:41:49,249 INFO L130 BoogieDeclarations]: Found specification of procedure notify_remote_via_irq [2021-12-22 14:41:49,249 INFO L138 BoogieDeclarations]: Found implementation of procedure notify_remote_via_irq [2021-12-22 14:41:49,249 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_release_grant_reference [2021-12-22 14:41:49,249 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_release_grant_reference [2021-12-22 14:41:49,249 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-12-22 14:41:49,249 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-12-22 14:41:49,249 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_can_sg [2021-12-22 14:41:49,249 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_can_sg [2021-12-22 14:41:49,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:41:49,250 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-12-22 14:41:49,250 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-12-22 14:41:49,250 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-22 14:41:49,250 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-22 14:41:49,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-22 14:41:49,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-22 14:41:49,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-12-22 14:41:49,251 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2021-12-22 14:41:49,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2021-12-22 14:41:49,251 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rxidx [2021-12-22 14:41:49,251 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rxidx [2021-12-22 14:41:49,251 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-22 14:41:49,252 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-22 14:41:49,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:41:49,252 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2021-12-22 14:41:49,252 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2021-12-22 14:41:49,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:41:49,253 INFO L130 BoogieDeclarations]: Found specification of procedure write_queue_xenstore_keys [2021-12-22 14:41:49,253 INFO L138 BoogieDeclarations]: Found implementation of procedure write_queue_xenstore_keys [2021-12-22 14:41:49,253 INFO L130 BoogieDeclarations]: Found specification of procedure pfn_to_mfn [2021-12-22 14:41:49,253 INFO L138 BoogieDeclarations]: Found implementation of procedure pfn_to_mfn [2021-12-22 14:41:49,253 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-12-22 14:41:49,254 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-12-22 14:41:49,254 INFO L130 BoogieDeclarations]: Found specification of procedure add_id_to_freelist [2021-12-22 14:41:49,254 INFO L138 BoogieDeclarations]: Found implementation of procedure add_id_to_freelist [2021-12-22 14:41:49,254 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_alloc_rx_buffers [2021-12-22 14:41:49,254 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_alloc_rx_buffers [2021-12-22 14:41:49,254 INFO L130 BoogieDeclarations]: Found specification of procedure skb_entry_set_link [2021-12-22 14:41:49,254 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_entry_set_link [2021-12-22 14:41:49,254 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-22 14:41:49,254 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-22 14:41:49,254 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-22 14:41:49,255 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-22 14:41:49,255 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-12-22 14:41:49,255 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-12-22 14:41:49,255 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2021-12-22 14:41:49,255 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2021-12-22 14:41:49,255 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access_ref [2021-12-22 14:41:49,255 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access_ref [2021-12-22 14:41:49,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 14:41:49,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-22 14:41:49,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-22 14:41:49,256 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-12-22 14:41:49,256 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-12-22 14:41:49,256 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_free_grant_references [2021-12-22 14:41:49,256 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_free_grant_references [2021-12-22 14:41:49,256 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2021-12-22 14:41:49,256 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2021-12-22 14:41:49,256 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-22 14:41:49,256 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-22 14:41:49,256 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-22 14:41:49,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-22 14:41:49,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 14:41:49,257 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2021-12-22 14:41:49,257 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2021-12-22 14:41:49,257 INFO L130 BoogieDeclarations]: Found specification of procedure get_zeroed_page [2021-12-22 14:41:49,257 INFO L138 BoogieDeclarations]: Found implementation of procedure get_zeroed_page [2021-12-22 14:41:49,257 INFO L130 BoogieDeclarations]: Found specification of procedure netback_changed [2021-12-22 14:41:49,257 INFO L138 BoogieDeclarations]: Found implementation of procedure netback_changed [2021-12-22 14:41:49,257 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_poll_controller [2021-12-22 14:41:49,257 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_poll_controller [2021-12-22 14:41:49,258 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2021-12-22 14:41:49,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2021-12-22 14:41:49,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:41:49,258 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-22 14:41:49,258 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-22 14:41:49,258 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-22 14:41:49,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-22 14:41:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2021-12-22 14:41:49,259 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2021-12-22 14:41:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-22 14:41:49,259 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-22 14:41:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_select_queue [2021-12-22 14:41:49,259 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_select_queue [2021-12-22 14:41:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_end_access [2021-12-22 14:41:49,259 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_end_access [2021-12-22 14:41:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure skb_get [2021-12-22 14:41:49,259 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_get [2021-12-22 14:41:49,260 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-22 14:41:49,260 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-22 14:41:49,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-22 14:41:49,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-22 14:41:49,260 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_ref [2021-12-22 14:41:49,260 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_ref [2021-12-22 14:41:49,260 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 14:41:49,260 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 14:41:49,260 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2021-12-22 14:41:49,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2021-12-22 14:41:49,261 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2021-12-22 14:41:49,261 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2021-12-22 14:41:49,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:41:49,261 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2021-12-22 14:41:49,261 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2021-12-22 14:41:49,261 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-22 14:41:49,261 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-22 14:41:49,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:41:49,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:41:49,261 INFO L130 BoogieDeclarations]: Found specification of procedure get_id_from_freelist [2021-12-22 14:41:49,262 INFO L138 BoogieDeclarations]: Found implementation of procedure get_id_from_freelist [2021-12-22 14:41:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2021-12-22 14:41:49,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2021-12-22 14:41:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_fix_features [2021-12-22 14:41:49,262 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_fix_features [2021-12-22 14:41:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:41:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-12-22 14:41:49,262 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-12-22 14:41:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:41:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-12-22 14:41:49,263 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-12-22 14:41:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2021-12-22 14:41:49,263 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2021-12-22 14:41:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:41:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-12-22 14:41:49,263 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-12-22 14:41:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-12-22 14:41:49,263 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-12-22 14:41:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-22 14:41:49,264 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-22 14:41:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-12-22 14:41:49,264 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-12-22 14:41:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-12-22 14:41:49,264 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-12-22 14:41:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2021-12-22 14:41:49,264 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2021-12-22 14:41:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-22 14:41:49,264 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-22 14:41:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2021-12-22 14:41:49,265 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2021-12-22 14:41:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_grant_foreign_access_ref [2021-12-22 14:41:49,265 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_grant_foreign_access_ref [2021-12-22 14:41:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-22 14:41:49,265 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-22 14:41:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_set_features [2021-12-22 14:41:49,265 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_set_features [2021-12-22 14:41:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-12-22 14:41:49,265 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-12-22 14:41:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-22 14:41:49,266 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-22 14:41:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:41:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-12-22 14:41:49,266 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-12-22 14:41:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2021-12-22 14:41:49,266 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2021-12-22 14:41:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_free_evtchn [2021-12-22 14:41:49,266 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_free_evtchn [2021-12-22 14:41:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_skb [2021-12-22 14:41:49,266 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_skb [2021-12-22 14:41:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:41:49,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:41:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_buf_gc [2021-12-22 14:41:49,279 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_buf_gc [2021-12-22 14:41:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-12-22 14:41:49,279 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-12-22 14:41:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-22 14:41:49,280 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-22 14:41:49,852 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:41:49,855 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:41:50,571 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-22 14:41:56,976 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:41:56,992 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:41:56,993 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 14:41:56,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:41:56 BoogieIcfgContainer [2021-12-22 14:41:56,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:41:56,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:41:56,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:41:57,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:41:57,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:41:46" (1/3) ... [2021-12-22 14:41:57,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78548344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:41:57, skipping insertion in model container [2021-12-22 14:41:57,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:41:48" (2/3) ... [2021-12-22 14:41:57,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78548344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:41:57, skipping insertion in model container [2021-12-22 14:41:57,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:41:56" (3/3) ... [2021-12-22 14:41:57,004 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 [2021-12-22 14:41:57,010 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:41:57,010 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:41:57,062 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:41:57,067 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 [2021-12-22 14:41:57,067 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:41:57,113 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) [2021-12-22 14:41:57,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-22 14:41:57,133 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:41:57,134 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] [2021-12-22 14:41:57,135 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:41:57,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:41:57,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1077420318, now seen corresponding path program 1 times [2021-12-22 14:41:57,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:41:57,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107670480] [2021-12-22 14:41:57,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:41:57,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:41:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:57,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:41:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:57,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:41:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:57,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:41:57,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:57,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:41:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:57,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:41:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:57,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:41:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:57,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:41:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:57,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:41:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:57,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:41:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:57,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 14:41:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:57,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 14:41:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:57,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 14:41:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:57,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 14:41:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:57,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 14:41:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:57,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 14:41:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:57,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-22 14:41:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:57,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 14:41:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:57,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:41:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:57,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 14:41:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:57,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:41:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:57,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-22 14:41:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:57,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:41:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:57,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-22 14:41:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:57,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-22 14:41:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:57,798 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-12-22 14:41:57,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:41:57,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107670480] [2021-12-22 14:41:57,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107670480] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:41:57,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:41:57,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:41:57,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266015863] [2021-12-22 14:41:57,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:41:57,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:41:57,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:41:57,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:41:57,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:41:57,825 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) [2021-12-22 14:42:03,799 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 [] [2021-12-22 14:42:06,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:42:08,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:42:11,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:42:13,476 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:42:14,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:42:14,434 INFO L93 Difference]: Finished difference Result 4573 states and 6357 transitions. [2021-12-22 14:42:14,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 14:42:14,436 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 [2021-12-22 14:42:14,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:42:14,464 INFO L225 Difference]: With dead ends: 4573 [2021-12-22 14:42:14,464 INFO L226 Difference]: Without dead ends: 2943 [2021-12-22 14:42:14,478 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 [2021-12-22 14:42:14,480 INFO L933 BasicCegarLoop]: 2150 mSDtfsCounter, 3983 mSDsluCounter, 3482 mSDsCounter, 0 mSdLazyCounter, 3610 mSolverCounterSat, 2803 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4208 SdHoareTripleChecker+Valid, 5632 SdHoareTripleChecker+Invalid, 6417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2803 IncrementalHoareTripleChecker+Valid, 3610 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:42:14,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4208 Valid, 5632 Invalid, 6417 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2803 Valid, 3610 Invalid, 4 Unknown, 0 Unchecked, 16.1s Time] [2021-12-22 14:42:14,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2021-12-22 14:42:14,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 2569. [2021-12-22 14:42:14,638 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) [2021-12-22 14:42:14,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2569 states to 2569 states and 3453 transitions. [2021-12-22 14:42:14,653 INFO L78 Accepts]: Start accepts. Automaton has 2569 states and 3453 transitions. Word has length 162 [2021-12-22 14:42:14,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:42:14,655 INFO L470 AbstractCegarLoop]: Abstraction has 2569 states and 3453 transitions. [2021-12-22 14:42:14,656 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) [2021-12-22 14:42:14,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2569 states and 3453 transitions. [2021-12-22 14:42:14,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-22 14:42:14,667 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:42:14,667 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] [2021-12-22 14:42:14,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:42:14,669 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:42:14,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:42:14,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1609982772, now seen corresponding path program 1 times [2021-12-22 14:42:14,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:42:14,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337328343] [2021-12-22 14:42:14,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:42:14,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:42:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:14,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:42:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:14,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:42:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:14,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:42:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:14,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:42:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:14,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:42:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:14,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:42:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:14,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:42:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:14,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:42:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:14,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:42:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:14,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 14:42:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:14,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 14:42:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:14,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 14:42:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:14,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 14:42:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:14,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 14:42:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:14,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-22 14:42:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:14,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-22 14:42:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:14,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 14:42:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:14,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:42:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:14,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-22 14:42:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:14,988 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-12-22 14:42:14,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:42:14,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337328343] [2021-12-22 14:42:14,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337328343] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:42:14,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:42:14,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:42:14,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417944187] [2021-12-22 14:42:14,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:42:14,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:42:14,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:42:14,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:42:14,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:42:14,992 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) [2021-12-22 14:42:21,245 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:42:23,338 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:42:26,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:42:26,024 INFO L93 Difference]: Finished difference Result 6775 states and 9233 transitions. [2021-12-22 14:42:26,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:42:26,025 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 [2021-12-22 14:42:26,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:42:26,046 INFO L225 Difference]: With dead ends: 6775 [2021-12-22 14:42:26,046 INFO L226 Difference]: Without dead ends: 4233 [2021-12-22 14:42:26,055 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 [2021-12-22 14:42:26,056 INFO L933 BasicCegarLoop]: 2931 mSDtfsCounter, 2394 mSDsluCounter, 5037 mSDsCounter, 0 mSdLazyCounter, 3587 mSolverCounterSat, 1439 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2635 SdHoareTripleChecker+Valid, 7968 SdHoareTripleChecker+Invalid, 5028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1439 IncrementalHoareTripleChecker+Valid, 3587 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2021-12-22 14:42:26,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2635 Valid, 7968 Invalid, 5028 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1439 Valid, 3587 Invalid, 2 Unknown, 0 Unchecked, 10.6s Time] [2021-12-22 14:42:26,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4233 states. [2021-12-22 14:42:26,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4233 to 3743. [2021-12-22 14:42:26,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3743 states, 2646 states have (on average 1.282312925170068) internal successors, (3393), 2707 states have internal predecessors, (3393), 818 states have call successors, (818), 273 states have call predecessors, (818), 278 states have return successors, (845), 809 states have call predecessors, (845), 817 states have call successors, (845) [2021-12-22 14:42:26,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3743 states to 3743 states and 5056 transitions. [2021-12-22 14:42:26,218 INFO L78 Accepts]: Start accepts. Automaton has 3743 states and 5056 transitions. Word has length 155 [2021-12-22 14:42:26,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:42:26,219 INFO L470 AbstractCegarLoop]: Abstraction has 3743 states and 5056 transitions. [2021-12-22 14:42:26,219 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) [2021-12-22 14:42:26,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3743 states and 5056 transitions. [2021-12-22 14:42:26,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-12-22 14:42:26,227 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:42:26,227 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] [2021-12-22 14:42:26,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:42:26,228 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:42:26,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:42:26,228 INFO L85 PathProgramCache]: Analyzing trace with hash 356772008, now seen corresponding path program 1 times [2021-12-22 14:42:26,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:42:26,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981341431] [2021-12-22 14:42:26,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:42:26,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:42:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:26,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:42:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:26,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:42:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:26,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:42:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:26,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:42:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:26,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:42:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:26,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:42:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:26,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:42:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:26,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:42:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:26,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:42:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:26,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 14:42:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:26,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 14:42:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:26,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 14:42:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:26,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 14:42:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:26,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 14:42:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:26,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 14:42:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:26,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 14:42:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:26,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-22 14:42:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:26,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-22 14:42:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:26,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-22 14:42:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:26,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:42:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:26,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-22 14:42:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:26,579 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-22 14:42:26,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:42:26,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981341431] [2021-12-22 14:42:26,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981341431] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:42:26,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:42:26,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:42:26,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205523624] [2021-12-22 14:42:26,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:42:26,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:42:26,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:42:26,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:42:26,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:42:26,583 INFO L87 Difference]: Start difference. First operand 3743 states and 5056 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) [2021-12-22 14:42:32,084 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:42:34,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:42:36,913 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 [] [2021-12-22 14:42:37,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:42:37,682 INFO L93 Difference]: Finished difference Result 7945 states and 10839 transitions. [2021-12-22 14:42:37,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:42:37,683 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 180 [2021-12-22 14:42:37,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:42:37,701 INFO L225 Difference]: With dead ends: 7945 [2021-12-22 14:42:37,702 INFO L226 Difference]: Without dead ends: 4246 [2021-12-22 14:42:37,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:42:37,712 INFO L933 BasicCegarLoop]: 1979 mSDtfsCounter, 1040 mSDsluCounter, 5686 mSDsCounter, 0 mSdLazyCounter, 3111 mSolverCounterSat, 956 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 7665 SdHoareTripleChecker+Invalid, 4070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 956 IncrementalHoareTripleChecker+Valid, 3111 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:42:37,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1106 Valid, 7665 Invalid, 4070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [956 Valid, 3111 Invalid, 3 Unknown, 0 Unchecked, 10.8s Time] [2021-12-22 14:42:37,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4246 states. [2021-12-22 14:42:37,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4246 to 3769. [2021-12-22 14:42:37,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3769 states, 2668 states have (on average 1.2799850074962518) internal successors, (3415), 2729 states have internal predecessors, (3415), 820 states have call successors, (820), 273 states have call predecessors, (820), 280 states have return successors, (852), 813 states have call predecessors, (852), 819 states have call successors, (852) [2021-12-22 14:42:37,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3769 states to 3769 states and 5087 transitions. [2021-12-22 14:42:37,830 INFO L78 Accepts]: Start accepts. Automaton has 3769 states and 5087 transitions. Word has length 180 [2021-12-22 14:42:37,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:42:37,830 INFO L470 AbstractCegarLoop]: Abstraction has 3769 states and 5087 transitions. [2021-12-22 14:42:37,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2021-12-22 14:42:37,831 INFO L276 IsEmpty]: Start isEmpty. Operand 3769 states and 5087 transitions. [2021-12-22 14:42:37,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-12-22 14:42:37,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:42:37,835 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:42:37,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:42:37,835 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:42:37,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:42:37,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1826379006, now seen corresponding path program 1 times [2021-12-22 14:42:37,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:42:37,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410536147] [2021-12-22 14:42:37,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:42:37,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:42:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:38,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:42:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:38,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:42:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:38,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:42:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:38,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:42:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:38,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:42:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:38,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:42:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:38,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:42:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:38,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:42:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:38,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:42:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:38,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 14:42:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:38,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 14:42:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:38,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 14:42:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:38,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 14:42:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:38,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 14:42:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:38,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-22 14:42:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:38,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 14:42:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:38,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-22 14:42:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:38,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-22 14:42:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:38,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-22 14:42:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:38,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:42:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:38,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-22 14:42:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:42:38,233 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-22 14:42:38,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:42:38,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410536147] [2021-12-22 14:42:38,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410536147] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:42:38,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:42:38,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:42:38,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320881055] [2021-12-22 14:42:38,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:42:38,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:42:38,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:42:38,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:42:38,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:42:38,236 INFO L87 Difference]: Start difference. First operand 3769 states and 5087 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-22 14:42:44,498 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 [] [2021-12-22 14:42:47,134 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 []