./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--infiniband--ulp--isert--ib_isert.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 b01f589d408f6e26ea7a63733affb8614d3f46d7c24e67c8e520356eb639cf0d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 16:41:59,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 16:41:59,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 16:41:59,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 16:41:59,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 16:41:59,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 16:41:59,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 16:41:59,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 16:41:59,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 16:41:59,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 16:41:59,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 16:41:59,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 16:41:59,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 16:41:59,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 16:41:59,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 16:41:59,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 16:41:59,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 16:41:59,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 16:41:59,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 16:41:59,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 16:41:59,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 16:41:59,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 16:41:59,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 16:41:59,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 16:41:59,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 16:41:59,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 16:41:59,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 16:41:59,873 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 16:41:59,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 16:41:59,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 16:41:59,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 16:41:59,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 16:41:59,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 16:41:59,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 16:41:59,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 16:41:59,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 16:41:59,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 16:41:59,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 16:41:59,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 16:41:59,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 16:41:59,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 16:41:59,882 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 16:41:59,913 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 16:41:59,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 16:41:59,913 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 16:41:59,914 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 16:41:59,914 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 16:41:59,915 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 16:41:59,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 16:41:59,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 16:41:59,916 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 16:41:59,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 16:41:59,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 16:41:59,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 16:41:59,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 16:41:59,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 16:41:59,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 16:41:59,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 16:41:59,918 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 16:41:59,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 16:41:59,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 16:41:59,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 16:41:59,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 16:41:59,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:41:59,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 16:41:59,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 16:41:59,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 16:41:59,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 16:41:59,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 16:41:59,920 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 16:41:59,920 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 16:41:59,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 16:41:59,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 16:41:59,922 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b01f589d408f6e26ea7a63733affb8614d3f46d7c24e67c8e520356eb639cf0d [2021-12-21 16:42:00,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 16:42:00,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 16:42:00,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 16:42:00,139 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 16:42:00,140 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 16:42:00,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i [2021-12-21 16:42:00,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eecb6f3c5/acbb8934a81949a3bb2620185e518b13/FLAG2c3f99967 [2021-12-21 16:42:00,941 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 16:42:00,942 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i [2021-12-21 16:42:00,994 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eecb6f3c5/acbb8934a81949a3bb2620185e518b13/FLAG2c3f99967 [2021-12-21 16:42:01,456 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eecb6f3c5/acbb8934a81949a3bb2620185e518b13 [2021-12-21 16:42:01,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 16:42:01,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 16:42:01,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 16:42:01,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 16:42:01,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 16:42:01,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:42:01" (1/1) ... [2021-12-21 16:42:01,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ce3e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:42:01, skipping insertion in model container [2021-12-21 16:42:01,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:42:01" (1/1) ... [2021-12-21 16:42:01,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 16:42:01,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 16:42:04,302 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i[472306,472319] [2021-12-21 16:42:04,361 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:42:04,378 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 16:42:05,084 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i[472306,472319] [2021-12-21 16:42:05,092 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:42:05,176 INFO L208 MainTranslator]: Completed translation [2021-12-21 16:42:05,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:42:05 WrapperNode [2021-12-21 16:42:05,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 16:42:05,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 16:42:05,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 16:42:05,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 16:42:05,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:42:05" (1/1) ... [2021-12-21 16:42:05,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:42:05" (1/1) ... [2021-12-21 16:42:05,512 INFO L137 Inliner]: procedures = 390, calls = 2687, calls flagged for inlining = 203, calls inlined = 169, statements flattened = 6741 [2021-12-21 16:42:05,512 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 16:42:05,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 16:42:05,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 16:42:05,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 16:42:05,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:42:05" (1/1) ... [2021-12-21 16:42:05,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:42:05" (1/1) ... [2021-12-21 16:42:05,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:42:05" (1/1) ... [2021-12-21 16:42:05,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:42:05" (1/1) ... [2021-12-21 16:42:05,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:42:05" (1/1) ... [2021-12-21 16:42:05,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:42:05" (1/1) ... [2021-12-21 16:42:05,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:42:05" (1/1) ... [2021-12-21 16:42:05,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 16:42:05,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 16:42:05,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 16:42:05,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 16:42:05,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:42:05" (1/1) ... [2021-12-21 16:42:05,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:42:05,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:42:05,844 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) [2021-12-21 16:42:05,867 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 [2021-12-21 16:42:05,879 INFO L130 BoogieDeclarations]: Found specification of procedure ib_wc_status_msg [2021-12-21 16:42:05,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_wc_status_msg [2021-12-21 16:42:05,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-21 16:42:05,880 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-21 16:42:05,880 INFO L130 BoogieDeclarations]: Found specification of procedure isert_setup_id [2021-12-21 16:42:05,880 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_setup_id [2021-12-21 16:42:05,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-21 16:42:05,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-21 16:42:05,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 16:42:05,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 16:42:05,881 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-12-21 16:42:05,881 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-12-21 16:42:05,882 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2021-12-21 16:42:05,882 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2021-12-21 16:42:05,882 INFO L130 BoogieDeclarations]: Found specification of procedure iscsit_stop_dataout_timer [2021-12-21 16:42:05,882 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsit_stop_dataout_timer [2021-12-21 16:42:05,882 INFO L130 BoogieDeclarations]: Found specification of procedure rdma_destroy_id [2021-12-21 16:42:05,882 INFO L138 BoogieDeclarations]: Found implementation of procedure rdma_destroy_id [2021-12-21 16:42:05,882 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2021-12-21 16:42:05,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2021-12-21 16:42:05,883 INFO L130 BoogieDeclarations]: Found specification of procedure isert_cq_work [2021-12-21 16:42:05,883 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_cq_work [2021-12-21 16:42:05,883 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-21 16:42:05,883 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-21 16:42:05,883 INFO L130 BoogieDeclarations]: Found specification of procedure ib_post_recv [2021-12-21 16:42:05,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_post_recv [2021-12-21 16:42:05,884 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_sync_single_for_device [2021-12-21 16:42:05,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_sync_single_for_device [2021-12-21 16:42:05,884 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_unmap_single [2021-12-21 16:42:05,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_unmap_single [2021-12-21 16:42:05,884 INFO L130 BoogieDeclarations]: Found specification of procedure isert_init_send_wr [2021-12-21 16:42:05,884 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_init_send_wr [2021-12-21 16:42:05,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-21 16:42:05,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-21 16:42:05,885 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-21 16:42:05,885 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-21 16:42:05,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 16:42:05,886 INFO L130 BoogieDeclarations]: Found specification of procedure ib_sg_dma_address [2021-12-21 16:42:05,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_sg_dma_address [2021-12-21 16:42:05,886 INFO L130 BoogieDeclarations]: Found specification of procedure isert_wait_conn [2021-12-21 16:42:05,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_wait_conn [2021-12-21 16:42:05,886 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u64~0~X~int~X~int~TO~VOID [2021-12-21 16:42:05,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u64~0~X~int~X~int~TO~VOID [2021-12-21 16:42:05,887 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-21 16:42:05,887 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-21 16:42:05,887 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-12-21 16:42:05,887 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-12-21 16:42:05,887 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_map_single [2021-12-21 16:42:05,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_map_single [2021-12-21 16:42:05,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-21 16:42:05,888 INFO L130 BoogieDeclarations]: Found specification of procedure isert_conn_terminate [2021-12-21 16:42:05,888 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_conn_terminate [2021-12-21 16:42:05,888 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-21 16:42:05,888 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-21 16:42:05,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-21 16:42:05,889 INFO L130 BoogieDeclarations]: Found specification of procedure isert_prot_cmd [2021-12-21 16:42:05,889 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_prot_cmd [2021-12-21 16:42:05,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 16:42:05,890 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-21 16:42:05,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-21 16:42:05,891 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_interruptible [2021-12-21 16:42:05,891 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_interruptible [2021-12-21 16:42:05,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-21 16:42:05,891 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-21 16:42:05,891 INFO L130 BoogieDeclarations]: Found specification of procedure isert_release_work [2021-12-21 16:42:05,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_release_work [2021-12-21 16:42:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-21 16:42:05,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-21 16:42:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_np [2021-12-21 16:42:05,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_np [2021-12-21 16:42:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure isert_comp_put [2021-12-21 16:42:05,893 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_comp_put [2021-12-21 16:42:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-21 16:42:05,893 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-21 16:42:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-21 16:42:05,894 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-21 16:42:05,894 INFO L130 BoogieDeclarations]: Found specification of procedure sg_next [2021-12-21 16:42:05,894 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_next [2021-12-21 16:42:05,894 INFO L130 BoogieDeclarations]: Found specification of procedure sg_copy_from_buffer [2021-12-21 16:42:05,894 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_copy_from_buffer [2021-12-21 16:42:05,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-21 16:42:05,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-21 16:42:05,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 16:42:05,895 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-12-21 16:42:05,895 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-12-21 16:42:05,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 16:42:05,895 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2021-12-21 16:42:05,895 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2021-12-21 16:42:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 16:42:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-21 16:42:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-21 16:42:05,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-21 16:42:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure isert_completion_put [2021-12-21 16:42:05,897 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_completion_put [2021-12-21 16:42:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-12-21 16:42:05,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-12-21 16:42:05,898 INFO L130 BoogieDeclarations]: Found specification of procedure isert_unmap_data_buf [2021-12-21 16:42:05,898 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_unmap_data_buf [2021-12-21 16:42:05,898 INFO L130 BoogieDeclarations]: Found specification of procedure isert_inv_rkey [2021-12-21 16:42:05,899 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_inv_rkey [2021-12-21 16:42:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-21 16:42:05,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-21 16:42:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_sync_single_for_cpu [2021-12-21 16:42:05,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_sync_single_for_cpu [2021-12-21 16:42:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-21 16:42:05,900 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-21 16:42:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure isert_allocate_cmd [2021-12-21 16:42:05,900 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_allocate_cmd [2021-12-21 16:42:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure isert_do_control_comp [2021-12-21 16:42:05,900 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_do_control_comp [2021-12-21 16:42:05,901 INFO L130 BoogieDeclarations]: Found specification of procedure isert_put_conn [2021-12-21 16:42:05,901 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_put_conn [2021-12-21 16:42:05,901 INFO L130 BoogieDeclarations]: Found specification of procedure isert_connect_release [2021-12-21 16:42:05,901 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_connect_release [2021-12-21 16:42:05,902 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_comps [2021-12-21 16:42:05,902 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_comps [2021-12-21 16:42:05,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 16:42:05,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 16:42:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-12-21 16:42:05,905 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-12-21 16:42:05,905 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-21 16:42:05,905 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-21 16:42:05,905 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-12-21 16:42:05,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-12-21 16:42:05,906 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-21 16:42:05,906 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-21 16:42:05,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-21 16:42:05,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-21 16:42:05,911 INFO L130 BoogieDeclarations]: Found specification of procedure isert_device_put [2021-12-21 16:42:05,912 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_device_put [2021-12-21 16:42:05,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-21 16:42:05,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-21 16:42:05,912 INFO L130 BoogieDeclarations]: Found specification of procedure isert_map_data_buf [2021-12-21 16:42:05,912 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_map_data_buf [2021-12-21 16:42:05,912 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-21 16:42:05,913 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-21 16:42:05,913 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_conn [2021-12-21 16:42:05,913 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_conn [2021-12-21 16:42:05,913 INFO L130 BoogieDeclarations]: Found specification of procedure ib_post_send [2021-12-21 16:42:05,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_post_send [2021-12-21 16:42:05,913 INFO L130 BoogieDeclarations]: Found specification of procedure isert_init_tx_hdrs [2021-12-21 16:42:05,913 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_init_tx_hdrs [2021-12-21 16:42:05,913 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-12-21 16:42:05,914 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-12-21 16:42:05,914 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-12-21 16:42:05,914 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-12-21 16:42:05,914 INFO L130 BoogieDeclarations]: Found specification of procedure ib_free_fast_reg_page_list [2021-12-21 16:42:05,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_free_fast_reg_page_list [2021-12-21 16:42:05,914 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-12-21 16:42:05,914 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-12-21 16:42:05,915 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-21 16:42:05,915 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-21 16:42:05,915 INFO L130 BoogieDeclarations]: Found specification of procedure isert_aborted_task [2021-12-21 16:42:05,915 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_aborted_task [2021-12-21 16:42:05,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-21 16:42:05,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-21 16:42:05,915 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-12-21 16:42:05,915 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-12-21 16:42:05,916 INFO L130 BoogieDeclarations]: Found specification of procedure isert_put_response [2021-12-21 16:42:05,916 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_put_response [2021-12-21 16:42:05,916 INFO L130 BoogieDeclarations]: Found specification of procedure isert_wait4flush [2021-12-21 16:42:05,916 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_wait4flush [2021-12-21 16:42:05,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-21 16:42:05,916 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-21 16:42:05,916 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 16:42:05,917 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 16:42:05,917 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_login_buf [2021-12-21 16:42:05,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_login_buf [2021-12-21 16:42:05,917 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-12-21 16:42:05,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-12-21 16:42:05,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 16:42:05,917 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-21 16:42:05,918 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-21 16:42:05,918 INFO L130 BoogieDeclarations]: Found specification of procedure iscsit_priv_cmd [2021-12-21 16:42:05,918 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsit_priv_cmd [2021-12-21 16:42:05,918 INFO L130 BoogieDeclarations]: Found specification of procedure isert_put_nopin [2021-12-21 16:42:05,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_put_nopin [2021-12-21 16:42:05,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 16:42:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-12-21 16:42:05,919 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-12-21 16:42:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-21 16:42:05,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-21 16:42:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure isert_reg_rdma [2021-12-21 16:42:05,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_reg_rdma [2021-12-21 16:42:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 16:42:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure isert_post_recv [2021-12-21 16:42:05,920 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_post_recv [2021-12-21 16:42:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-21 16:42:05,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-21 16:42:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-21 16:42:05,920 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-21 16:42:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-12-21 16:42:05,920 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-12-21 16:42:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-21 16:42:05,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-21 16:42:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure isert_rdma_post_recvl [2021-12-21 16:42:05,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_rdma_post_recvl [2021-12-21 16:42:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-21 16:42:05,921 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-21 16:42:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure isert_conn_free_fastreg_pool [2021-12-21 16:42:05,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_conn_free_fastreg_pool [2021-12-21 16:42:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure transport_send_check_condition_and_sense [2021-12-21 16:42:05,922 INFO L138 BoogieDeclarations]: Found implementation of procedure transport_send_check_condition_and_sense [2021-12-21 16:42:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-21 16:42:05,922 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-21 16:42:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure isert_reg_sig_mr [2021-12-21 16:42:05,923 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_reg_sig_mr [2021-12-21 16:42:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure transport_generic_free_cmd [2021-12-21 16:42:05,923 INFO L138 BoogieDeclarations]: Found implementation of procedure transport_generic_free_cmd [2021-12-21 16:42:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure isert_unmap_tx_desc [2021-12-21 16:42:05,923 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_unmap_tx_desc [2021-12-21 16:42:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-21 16:42:05,923 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-21 16:42:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_weight [2021-12-21 16:42:05,924 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_weight [2021-12-21 16:42:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure isert_handle_prot_cmd [2021-12-21 16:42:05,924 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_handle_prot_cmd [2021-12-21 16:42:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dereg_mr [2021-12-21 16:42:05,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dereg_mr [2021-12-21 16:42:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure ib_req_notify_cq [2021-12-21 16:42:05,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_req_notify_cq [2021-12-21 16:42:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-21 16:42:05,925 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-21 16:42:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure isert_check_pi_status [2021-12-21 16:42:05,925 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_check_pi_status [2021-12-21 16:42:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-12-21 16:42:05,925 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-12-21 16:42:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 16:42:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure isert_create_send_desc [2021-12-21 16:42:05,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_create_send_desc [2021-12-21 16:42:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-21 16:42:05,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-21 16:42:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure ib_sg_dma_len [2021-12-21 16:42:05,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_sg_dma_len [2021-12-21 16:42:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure isert_fast_reg_mr [2021-12-21 16:42:05,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_fast_reg_mr [2021-12-21 16:42:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-21 16:42:05,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-21 16:42:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2021-12-21 16:42:05,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2021-12-21 16:42:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure isert_post_response [2021-12-21 16:42:05,927 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_post_response [2021-12-21 16:42:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure ib_alloc_fast_reg_mr [2021-12-21 16:42:05,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_alloc_fast_reg_mr [2021-12-21 16:42:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-21 16:42:05,929 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-21 16:42:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure isert_rx_login_req [2021-12-21 16:42:05,932 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_rx_login_req [2021-12-21 16:42:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-12-21 16:42:05,932 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-12-21 16:42:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_mapping_error [2021-12-21 16:42:05,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_mapping_error [2021-12-21 16:42:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 16:42:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-21 16:42:05,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-21 16:42:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure target_put_sess_cmd [2021-12-21 16:42:05,934 INFO L138 BoogieDeclarations]: Found implementation of procedure target_put_sess_cmd [2021-12-21 16:42:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure isert_set_dif_domain [2021-12-21 16:42:05,934 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_set_dif_domain [2021-12-21 16:42:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-12-21 16:42:05,934 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-12-21 16:42:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dealloc_pd [2021-12-21 16:42:05,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dealloc_pd [2021-12-21 16:42:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure ib_alloc_fast_reg_page_list [2021-12-21 16:42:05,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_alloc_fast_reg_page_list [2021-12-21 16:42:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure iscsit_build_rsp_pdu [2021-12-21 16:42:05,935 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsit_build_rsp_pdu [2021-12-21 16:42:07,010 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 16:42:07,013 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 16:42:07,128 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-21 16:42:12,811 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 16:42:12,835 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 16:42:12,836 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 16:42:12,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:42:12 BoogieIcfgContainer [2021-12-21 16:42:12,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 16:42:12,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 16:42:12,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 16:42:12,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 16:42:12,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:42:01" (1/3) ... [2021-12-21 16:42:12,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc7d6fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:42:12, skipping insertion in model container [2021-12-21 16:42:12,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:42:05" (2/3) ... [2021-12-21 16:42:12,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc7d6fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:42:12, skipping insertion in model container [2021-12-21 16:42:12,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:42:12" (3/3) ... [2021-12-21 16:42:12,846 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i [2021-12-21 16:42:12,849 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 16:42:12,850 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 16:42:12,897 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 16:42:12,906 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 [2021-12-21 16:42:12,907 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 16:42:12,956 INFO L276 IsEmpty]: Start isEmpty. Operand has 2249 states, 1558 states have (on average 1.3286264441591784) internal successors, (2070), 1611 states have internal predecessors, (2070), 565 states have call successors, (565), 125 states have call predecessors, (565), 124 states have return successors, (559), 548 states have call predecessors, (559), 559 states have call successors, (559) [2021-12-21 16:42:12,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-21 16:42:12,964 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:42:12,964 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:42:12,965 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:42:12,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:42:12,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1434667982, now seen corresponding path program 1 times [2021-12-21 16:42:12,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:42:12,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785564254] [2021-12-21 16:42:12,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:42:12,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:42:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:13,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:42:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:13,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:42:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:13,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:42:13,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:13,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 16:42:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:13,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:42:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:13,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 16:42:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:13,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:42:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:13,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 16:42:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:13,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:42:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:13,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 16:42:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:13,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:42:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:13,721 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-21 16:42:13,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:42:13,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785564254] [2021-12-21 16:42:13,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785564254] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:42:13,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:42:13,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:42:13,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651513247] [2021-12-21 16:42:13,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:42:13,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:42:13,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:42:13,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:42:13,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:42:13,758 INFO L87 Difference]: Start difference. First operand has 2249 states, 1558 states have (on average 1.3286264441591784) internal successors, (2070), 1611 states have internal predecessors, (2070), 565 states have call successors, (565), 125 states have call predecessors, (565), 124 states have return successors, (559), 548 states have call predecessors, (559), 559 states have call successors, (559) Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 16:42:16,121 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:42:21,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:42:21,885 INFO L93 Difference]: Finished difference Result 5245 states and 7862 transitions. [2021-12-21 16:42:21,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 16:42:21,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 79 [2021-12-21 16:42:21,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:42:21,921 INFO L225 Difference]: With dead ends: 5245 [2021-12-21 16:42:21,922 INFO L226 Difference]: Without dead ends: 2971 [2021-12-21 16:42:21,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:42:21,945 INFO L933 BasicCegarLoop]: 2900 mSDtfsCounter, 3498 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 2945 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3562 SdHoareTripleChecker+Valid, 4441 SdHoareTripleChecker+Invalid, 4449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2945 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-12-21 16:42:21,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3562 Valid, 4441 Invalid, 4449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2945 Valid, 1503 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2021-12-21 16:42:21,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2021-12-21 16:42:22,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 2219. [2021-12-21 16:42:22,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2219 states, 1537 states have (on average 1.3201040988939492) internal successors, (2029), 1583 states have internal predecessors, (2029), 558 states have call successors, (558), 124 states have call predecessors, (558), 123 states have return successors, (556), 545 states have call predecessors, (556), 556 states have call successors, (556) [2021-12-21 16:42:22,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2219 states to 2219 states and 3143 transitions. [2021-12-21 16:42:22,230 INFO L78 Accepts]: Start accepts. Automaton has 2219 states and 3143 transitions. Word has length 79 [2021-12-21 16:42:22,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:42:22,231 INFO L470 AbstractCegarLoop]: Abstraction has 2219 states and 3143 transitions. [2021-12-21 16:42:22,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 16:42:22,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2219 states and 3143 transitions. [2021-12-21 16:42:22,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-21 16:42:22,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:42:22,235 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:42:22,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 16:42:22,235 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:42:22,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:42:22,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1906359156, now seen corresponding path program 1 times [2021-12-21 16:42:22,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:42:22,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068964502] [2021-12-21 16:42:22,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:42:22,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:42:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:22,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:42:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:22,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:42:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:22,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:42:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:22,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 16:42:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:22,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:42:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:22,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 16:42:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:22,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:42:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:22,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 16:42:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:22,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:42:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:22,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 16:42:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:22,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:42:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:22,593 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-21 16:42:22,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:42:22,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068964502] [2021-12-21 16:42:22,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068964502] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:42:22,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:42:22,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:42:22,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143340934] [2021-12-21 16:42:22,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:42:22,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:42:22,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:42:22,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:42:22,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:42:22,600 INFO L87 Difference]: Start difference. First operand 2219 states and 3143 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-21 16:42:25,948 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:42:29,405 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:42:36,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:42:36,752 INFO L93 Difference]: Finished difference Result 7646 states and 11254 transitions. [2021-12-21 16:42:36,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:42:36,754 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 79 [2021-12-21 16:42:36,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:42:36,793 INFO L225 Difference]: With dead ends: 7646 [2021-12-21 16:42:36,793 INFO L226 Difference]: Without dead ends: 5448 [2021-12-21 16:42:36,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:42:36,807 INFO L933 BasicCegarLoop]: 3180 mSDtfsCounter, 9144 mSDsluCounter, 3966 mSDsCounter, 0 mSdLazyCounter, 3303 mSolverCounterSat, 5970 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9448 SdHoareTripleChecker+Valid, 7146 SdHoareTripleChecker+Invalid, 9275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5970 IncrementalHoareTripleChecker+Valid, 3303 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2021-12-21 16:42:36,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9448 Valid, 7146 Invalid, 9275 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5970 Valid, 3303 Invalid, 2 Unknown, 0 Unchecked, 13.7s Time] [2021-12-21 16:42:36,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5448 states. [2021-12-21 16:42:37,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5448 to 3967. [2021-12-21 16:42:37,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3967 states, 2757 states have (on average 1.3173739571998548) internal successors, (3632), 2845 states have internal predecessors, (3632), 970 states have call successors, (970), 240 states have call predecessors, (970), 239 states have return successors, (967), 945 states have call predecessors, (967), 967 states have call successors, (967) [2021-12-21 16:42:37,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3967 states to 3967 states and 5569 transitions. [2021-12-21 16:42:37,067 INFO L78 Accepts]: Start accepts. Automaton has 3967 states and 5569 transitions. Word has length 79 [2021-12-21 16:42:37,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:42:37,069 INFO L470 AbstractCegarLoop]: Abstraction has 3967 states and 5569 transitions. [2021-12-21 16:42:37,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-21 16:42:37,069 INFO L276 IsEmpty]: Start isEmpty. Operand 3967 states and 5569 transitions. [2021-12-21 16:42:37,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 16:42:37,090 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:42:37,090 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-12-21 16:42:37,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 16:42:37,091 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:42:37,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:42:37,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1136123505, now seen corresponding path program 1 times [2021-12-21 16:42:37,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:42:37,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914124064] [2021-12-21 16:42:37,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:42:37,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:42:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:37,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:42:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:37,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:42:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:37,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:42:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:37,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 16:42:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:37,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:42:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:37,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 16:42:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:37,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:42:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:37,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 16:42:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:37,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:42:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:37,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 16:42:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:37,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:42:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:37,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 16:42:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:37,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:42:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:37,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:42:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:37,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 16:42:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:37,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:42:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:37,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:42:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:37,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 16:42:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:37,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:42:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:37,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:42:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:37,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-21 16:42:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:37,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:42:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:37,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:42:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:37,687 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-12-21 16:42:37,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:42:37,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914124064] [2021-12-21 16:42:37,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914124064] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:42:37,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:42:37,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 16:42:37,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971727354] [2021-12-21 16:42:37,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:42:37,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 16:42:37,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:42:37,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 16:42:37,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:42:37,694 INFO L87 Difference]: Start difference. First operand 3967 states and 5569 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 16:42:45,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:42:47,701 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:42:49,734 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:42:53,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:42:53,707 INFO L93 Difference]: Finished difference Result 9390 states and 13677 transitions. [2021-12-21 16:42:53,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 16:42:53,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 156 [2021-12-21 16:42:53,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:42:53,744 INFO L225 Difference]: With dead ends: 9390 [2021-12-21 16:42:53,745 INFO L226 Difference]: Without dead ends: 5445 [2021-12-21 16:42:53,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:42:53,768 INFO L933 BasicCegarLoop]: 2850 mSDtfsCounter, 2187 mSDsluCounter, 8669 mSDsCounter, 0 mSdLazyCounter, 4933 mSolverCounterSat, 1866 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2251 SdHoareTripleChecker+Valid, 11519 SdHoareTripleChecker+Invalid, 6802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1866 IncrementalHoareTripleChecker+Valid, 4933 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2021-12-21 16:42:53,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2251 Valid, 11519 Invalid, 6802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1866 Valid, 4933 Invalid, 3 Unknown, 0 Unchecked, 15.7s Time] [2021-12-21 16:42:53,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5445 states. [2021-12-21 16:42:53,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5445 to 3967. [2021-12-21 16:42:53,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3967 states, 2757 states have (on average 1.3166485310119695) internal successors, (3630), 2845 states have internal predecessors, (3630), 970 states have call successors, (970), 240 states have call predecessors, (970), 239 states have return successors, (967), 945 states have call predecessors, (967), 967 states have call successors, (967) [2021-12-21 16:42:53,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3967 states to 3967 states and 5567 transitions. [2021-12-21 16:42:53,986 INFO L78 Accepts]: Start accepts. Automaton has 3967 states and 5567 transitions. Word has length 156 [2021-12-21 16:42:53,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:42:53,987 INFO L470 AbstractCegarLoop]: Abstraction has 3967 states and 5567 transitions. [2021-12-21 16:42:53,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 16:42:53,988 INFO L276 IsEmpty]: Start isEmpty. Operand 3967 states and 5567 transitions. [2021-12-21 16:42:53,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-21 16:42:53,997 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:42:53,997 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:42:53,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 16:42:53,998 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:42:53,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:42:53,999 INFO L85 PathProgramCache]: Analyzing trace with hash 749283438, now seen corresponding path program 1 times [2021-12-21 16:42:53,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:42:53,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877516151] [2021-12-21 16:42:53,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:42:53,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:42:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:54,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:42:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:54,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:42:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:54,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:42:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:54,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 16:42:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:54,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:42:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:54,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 16:42:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:54,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:42:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:54,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 16:42:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:54,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:42:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:54,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 16:42:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:54,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:42:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:54,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 16:42:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:54,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 16:42:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:54,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 16:42:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:54,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:42:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:54,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 16:42:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:54,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 16:42:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:54,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 16:42:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:54,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 16:42:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:42:54,637 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-21 16:42:54,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:42:54,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877516151] [2021-12-21 16:42:54,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877516151] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:42:54,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:42:54,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 16:42:54,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288290110] [2021-12-21 16:42:54,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:42:54,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 16:42:54,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:42:54,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 16:42:54,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:42:54,641 INFO L87 Difference]: Start difference. First operand 3967 states and 5567 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16)