/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 09:06:07,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 09:06:07,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 09:06:07,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 09:06:07,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 09:06:07,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 09:06:07,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 09:06:07,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 09:06:07,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 09:06:07,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 09:06:07,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 09:06:07,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 09:06:07,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 09:06:07,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 09:06:07,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 09:06:07,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 09:06:07,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 09:06:07,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 09:06:07,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 09:06:07,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 09:06:07,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 09:06:07,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 09:06:07,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 09:06:07,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 09:06:07,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 09:06:07,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 09:06:07,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 09:06:07,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 09:06:07,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 09:06:07,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 09:06:07,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 09:06:07,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 09:06:07,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 09:06:07,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 09:06:07,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 09:06:07,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 09:06:07,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 09:06:07,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 09:06:07,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 09:06:07,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 09:06:07,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 09:06:07,678 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 09:06:07,704 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 09:06:07,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 09:06:07,705 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 09:06:07,705 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 09:06:07,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 09:06:07,705 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 09:06:07,705 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 09:06:07,705 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 09:06:07,706 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 09:06:07,706 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 09:06:07,706 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 09:06:07,706 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 09:06:07,706 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 09:06:07,706 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 09:06:07,706 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 09:06:07,706 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 09:06:07,706 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 09:06:07,707 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 09:06:07,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 09:06:07,707 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 09:06:07,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 09:06:07,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 09:06:07,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 09:06:07,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 09:06:07,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 09:06:07,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 09:06:07,708 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 09:06:07,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 09:06:07,708 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 09:06:07,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 09:06:07,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 09:06:07,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 09:06:07,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 09:06:07,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 09:06:07,709 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 09:06:07,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 09:06:07,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 09:06:07,709 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 09:06:07,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 09:06:07,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 09:06:07,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 09:06:07,710 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 09:06:07,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 09:06:07,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 09:06:07,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 09:06:07,983 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 09:06:07,984 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 09:06:07,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2023-04-03 09:06:09,180 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 09:06:09,729 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 09:06:09,730 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2023-04-03 09:06:09,787 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e68af171/7ab0571413414138986d5345292d7b44/FLAG3b725f70c [2023-04-03 09:06:09,803 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e68af171/7ab0571413414138986d5345292d7b44 [2023-04-03 09:06:09,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 09:06:09,808 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 09:06:09,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 09:06:09,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 09:06:09,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 09:06:09,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 09:06:09" (1/1) ... [2023-04-03 09:06:09,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2140b82d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 09:06:09, skipping insertion in model container [2023-04-03 09:06:09,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 09:06:09" (1/1) ... [2023-04-03 09:06:09,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 09:06:09,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 09:06:11,722 WARN L247 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-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[331724,331737] [2023-04-03 09:06:11,972 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 09:06:12,002 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 09:06:12,408 WARN L247 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-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[331724,331737] [2023-04-03 09:06:12,422 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 09:06:12,491 WARN L667 CHandler]: The function strncmp is called, but not defined or handled by StandardFunctionHandler. [2023-04-03 09:06:12,491 WARN L667 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-04-03 09:06:12,491 WARN L667 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-04-03 09:06:12,491 WARN L667 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-04-03 09:06:12,497 INFO L208 MainTranslator]: Completed translation [2023-04-03 09:06:12,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 09:06:12 WrapperNode [2023-04-03 09:06:12,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 09:06:12,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 09:06:12,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 09:06:12,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 09:06:12,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 09:06:12" (1/1) ... [2023-04-03 09:06:12,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 09:06:12" (1/1) ... [2023-04-03 09:06:12,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 09:06:12" (1/1) ... [2023-04-03 09:06:12,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 09:06:12" (1/1) ... [2023-04-03 09:06:12,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 09:06:12" (1/1) ... [2023-04-03 09:06:12,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 09:06:12" (1/1) ... [2023-04-03 09:06:12,926 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 09:06:12" (1/1) ... [2023-04-03 09:06:12,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 09:06:12" (1/1) ... [2023-04-03 09:06:13,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 09:06:13,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 09:06:13,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 09:06:13,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 09:06:13,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 09:06:12" (1/1) ... [2023-04-03 09:06:13,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 09:06:13,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 09:06:13,042 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) [2023-04-03 09:06:13,069 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 [2023-04-03 09:06:13,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 09:06:13,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 09:06:13,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2023-04-03 09:06:13,087 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 09:06:13,087 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2023-04-03 09:06:13,087 INFO L138 BoogieDeclarations]: Found implementation of procedure fls64 [2023-04-03 09:06:13,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_swab32 [2023-04-03 09:06:13,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-04-03 09:06:13,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2023-04-03 09:06:13,087 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-04-03 09:06:13,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __get_order [2023-04-03 09:06:13,087 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-04-03 09:06:13,088 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-04-03 09:06:13,088 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic64_read [2023-04-03 09:06:13,088 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_long_read [2023-04-03 09:06:13,088 INFO L138 BoogieDeclarations]: Found implementation of procedure test_ti_thread_flag [2023-04-03 09:06:13,088 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2023-04-03 09:06:13,088 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2023-04-03 09:06:13,088 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2023-04-03 09:06:13,088 INFO L138 BoogieDeclarations]: Found implementation of procedure register_chrdev [2023-04-03 09:06:13,088 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev [2023-04-03 09:06:13,088 INFO L138 BoogieDeclarations]: Found implementation of procedure test_tsk_thread_flag [2023-04-03 09:06:13,089 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-04-03 09:06:13,089 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2023-04-03 09:06:13,089 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 09:06:13,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-04-03 09:06:13,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-03 09:06:13,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-04-03 09:06:13,089 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-04-03 09:06:13,089 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-04-03 09:06:13,089 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-04-03 09:06:13,089 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-04-03 09:06:13,090 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_assign_page [2023-04-03 09:06:13,090 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2023-04-03 09:06:13,090 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2023-04-03 09:06:13,090 INFO L138 BoogieDeclarations]: Found implementation of procedure tape_name [2023-04-03 09:06:13,090 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_analyze_sense [2023-04-03 09:06:13,091 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_chk_result [2023-04-03 09:06:13,091 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_end_async [2023-04-03 09:06:13,091 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_allocate_request [2023-04-03 09:06:13,091 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_release_request [2023-04-03 09:06:13,092 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_execute [2023-04-03 09:06:13,092 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_do_scsi [2023-04-03 09:06:13,092 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_behind_check [2023-04-03 09:06:13,092 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_init_aux [2023-04-03 09:06:13,092 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_verify_frame [2023-04-03 09:06:13,092 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_ready [2023-04-03 09:06:13,092 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_for_medium [2023-04-03 09:06:13,093 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_position_tape_and_confirm [2023-04-03 09:06:13,093 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_drive_buffer [2023-04-03 09:06:13,093 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_frame [2023-04-03 09:06:13,093 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_recover_wait_frame [2023-04-03 09:06:13,093 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_frame [2023-04-03 09:06:13,093 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_initiate_read [2023-04-03 09:06:13,094 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_logical_frame [2023-04-03 09:06:13,094 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_seek_logical_blk [2023-04-03 09:06:13,094 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_sector [2023-04-03 09:06:13,094 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_seek_sector [2023-04-03 09:06:13,094 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_back_buffer_and_rewrite [2023-04-03 09:06:13,095 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reposition_and_retry [2023-04-03 09:06:13,095 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_error_recovery [2023-04-03 09:06:13,095 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_backward [2023-04-03 09:06:13,095 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_forward_slow [2023-04-03 09:06:13,095 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_forward_fast [2023-04-03 09:06:13,095 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_filemark [2023-04-03 09:06:13,095 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_eod [2023-04-03 09:06:13,095 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_filler [2023-04-03 09:06:13,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_write_header [2023-04-03 09:06:13,095 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_header [2023-04-03 09:06:13,095 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reset_header [2023-04-03 09:06:13,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_analyze_headers [2023-04-03 09:06:13,096 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_analyze_headers [2023-04-03 09:06:13,096 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_verify_position [2023-04-03 09:06:13,096 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_parse_firmware_rev [2023-04-03 09:06:13,096 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_configure_onstream [2023-04-03 09:06:13,097 INFO L138 BoogieDeclarations]: Found implementation of procedure cross_eof [2023-04-03 09:06:13,097 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_frame_position [2023-04-03 09:06:13,097 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_set_frame_position [2023-04-03 09:06:13,097 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_trailer [2023-04-03 09:06:13,098 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_write_buffer [2023-04-03 09:06:13,098 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_buffer [2023-04-03 09:06:13,098 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_frame [2023-04-03 09:06:13,098 INFO L138 BoogieDeclarations]: Found implementation of procedure do_door_lock [2023-04-03 09:06:13,098 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_state [2023-04-03 09:06:13,098 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write [2023-04-03 09:06:13,099 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read [2023-04-03 09:06:13,099 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_log_options [2023-04-03 09:06:13,099 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_set_options [2023-04-03 09:06:13,099 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_int_ioctl [2023-04-03 09:06:13,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __os_scsi_tape_open [2023-04-03 09:06:13,099 INFO L138 BoogieDeclarations]: Found implementation of procedure os_scsi_tape_open [2023-04-03 09:06:13,099 INFO L138 BoogieDeclarations]: Found implementation of procedure os_scsi_tape_flush [2023-04-03 09:06:13,099 INFO L138 BoogieDeclarations]: Found implementation of procedure os_scsi_tape_close [2023-04-03 09:06:13,099 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_ioctl [2023-04-03 09:06:13,099 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_compat_ioctl [2023-04-03 09:06:13,100 INFO L138 BoogieDeclarations]: Found implementation of procedure new_tape_buffer [2023-04-03 09:06:13,100 INFO L138 BoogieDeclarations]: Found implementation of procedure enlarge_buffer [2023-04-03 09:06:13,100 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize_buffer [2023-04-03 09:06:13,100 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_buffer [2023-04-03 09:06:13,100 INFO L138 BoogieDeclarations]: Found implementation of procedure from_buffer [2023-04-03 09:06:13,100 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_zero_buffer_tail [2023-04-03 09:06:13,100 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_to_buffer [2023-04-03 09:06:13,101 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_from_buffer [2023-04-03 09:06:13,101 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_options [2023-04-03 09:06:13,101 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_supports [2023-04-03 09:06:13,101 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_version_show [2023-04-03 09:06:13,101 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_create_sysfs_files [2023-04-03 09:06:13,101 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_remove_sysfs_files [2023-04-03 09:06:13,101 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_adr_rev_show [2023-04-03 09:06:13,101 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_linux_media_version_show [2023-04-03 09:06:13,101 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_capacity_show [2023-04-03 09:06:13,101 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_first_data_ppos_show [2023-04-03 09:06:13,102 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_eod_frame_ppos_show [2023-04-03 09:06:13,102 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_filemark_cnt_show [2023-04-03 09:06:13,103 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_init [2023-04-03 09:06:13,103 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_destroy [2023-04-03 09:06:13,103 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_add [2023-04-03 09:06:13,104 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_cleanup [2023-04-03 09:06:13,106 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_probe [2023-04-03 09:06:13,107 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_remove [2023-04-03 09:06:13,111 INFO L138 BoogieDeclarations]: Found implementation of procedure init_osst [2023-04-03 09:06:13,111 INFO L138 BoogieDeclarations]: Found implementation of procedure exit_osst [2023-04-03 09:06:13,111 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 09:06:13,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_1 [2023-04-03 09:06:13,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_2 [2023-04-03 09:06:13,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_3 [2023-04-03 09:06:13,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_4 [2023-04-03 09:06:13,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_5 [2023-04-03 09:06:13,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_6 [2023-04-03 09:06:13,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_7 [2023-04-03 09:06:13,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_8 [2023-04-03 09:06:13,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_9 [2023-04-03 09:06:13,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_10 [2023-04-03 09:06:13,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_11 [2023-04-03 09:06:13,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_12 [2023-04-03 09:06:13,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_13 [2023-04-03 09:06:13,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_14 [2023-04-03 09:06:13,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_15 [2023-04-03 09:06:13,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_16 [2023-04-03 09:06:13,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_17 [2023-04-03 09:06:13,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_18 [2023-04-03 09:06:13,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-04-03 09:06:13,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-04-03 09:06:13,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock [2023-04-03 09:06:13,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_lock [2023-04-03 09:06:13,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock [2023-04-03 09:06:13,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_lock [2023-04-03 09:06:13,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_lock [2023-04-03 09:06:13,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_lock [2023-04-03 09:06:13,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock [2023-04-03 09:06:13,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2023-04-03 09:06:13,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_lock_of_osst_tape [2023-04-03 09:06:13,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_osst_tape [2023-04-03 09:06:13,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_lock_of_osst_tape [2023-04-03 09:06:13,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_lock_of_osst_tape [2023-04-03 09:06:13,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_lock_of_osst_tape [2023-04-03 09:06:13,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_osst_tape [2023-04-03 09:06:13,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_device [2023-04-03 09:06:13,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_mutex_of_device [2023-04-03 09:06:13,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_device [2023-04-03 09:06:13,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of_device [2023-04-03 09:06:13,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2023-04-03 09:06:13,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_mutex_of_device [2023-04-03 09:06:13,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_device [2023-04-03 09:06:13,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_osst_int_mutex [2023-04-03 09:06:13,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_osst_int_mutex [2023-04-03 09:06:13,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_osst_int_mutex [2023-04-03 09:06:13,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_osst_int_mutex [2023-04-03 09:06:13,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_osst_int_mutex [2023-04-03 09:06:13,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_osst_int_mutex [2023-04-03 09:06:13,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_osst_int_mutex [2023-04-03 09:06:13,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-03 09:06:13,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-03 09:06:13,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __blk_put_request [2023-04-03 09:06:13,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __class_create [2023-04-03 09:06:13,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2023-04-03 09:06:13,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-04-03 09:06:13,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-04-03 09:06:13,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __register_chrdev [2023-04-03 09:06:13,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __scsi_print_sense [2023-04-03 09:06:13,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __unregister_chrdev [2023-04-03 09:06:13,116 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-04-03 09:06:13,117 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-04-03 09:06:13,117 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock [2023-04-03 09:06:13,118 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock [2023-04-03 09:06:13,118 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_disk [2023-04-03 09:06:13,118 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages_current [2023-04-03 09:06:13,118 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_execute_rq_nowait [2023-04-03 09:06:13,118 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_get_request [2023-04-03 09:06:13,118 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_put_request [2023-04-03 09:06:13,118 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_map_kern [2023-04-03 09:06:13,118 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_map_user [2023-04-03 09:06:13,118 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_unmap_user [2023-04-03 09:06:13,118 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2023-04-03 09:06:13,119 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2023-04-03 09:06:13,119 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2023-04-03 09:06:13,119 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-04-03 09:06:13,119 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2023-04-03 09:06:13,119 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create [2023-04-03 09:06:13,119 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2023-04-03 09:06:13,119 INFO L138 BoogieDeclarations]: Found implementation of procedure device_destroy [2023-04-03 09:06:13,119 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_create_file [2023-04-03 09:06:13,119 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_remove_file [2023-04-03 09:06:13,119 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2023-04-03 09:06:13,119 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2023-04-03 09:06:13,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-04-03 09:06:13,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value_probe [2023-04-03 09:06:13,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2023-04-03 09:06:13,120 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-04-03 09:06:13,120 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-04-03 09:06:13,120 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-04-03 09:06:13,120 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-04-03 09:06:13,120 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2023-04-03 09:06:13,120 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2023-04-03 09:06:13,120 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-04-03 09:06:13,120 INFO L138 BoogieDeclarations]: Found implementation of procedure panic [2023-04-03 09:06:13,120 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-04-03 09:06:13,120 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2023-04-03 09:06:13,120 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2023-04-03 09:06:13,121 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_block_when_processing_errors [2023-04-03 09:06:13,121 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_device_get [2023-04-03 09:06:13,121 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_device_put [2023-04-03 09:06:13,121 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_get_sense_info_fld [2023-04-03 09:06:13,121 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_ioctl [2023-04-03 09:06:13,121 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_normalize_sense [2023-04-03 09:06:13,121 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_register_driver [2023-04-03 09:06:13,121 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sense_desc_find [2023-04-03 09:06:13,121 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_next [2023-04-03 09:06:13,121 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-04-03 09:06:13,121 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2023-04-03 09:06:13,121 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2023-04-03 09:06:13,121 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2023-04-03 09:06:13,122 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_fmt [2023-04-03 09:06:13,122 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-04-03 09:06:13,122 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-04-03 09:06:13,122 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-04-03 09:06:13,122 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-04-03 09:06:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 09:06:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 09:06:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-03 09:06:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-03 09:06:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 09:06:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 09:06:13,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-04-03 09:06:13,123 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2023-04-03 09:06:13,126 INFO L130 BoogieDeclarations]: Found specification of procedure fls64 [2023-04-03 09:06:13,126 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_swab32 [2023-04-03 09:06:13,127 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-04-03 09:06:13,127 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2023-04-03 09:06:13,127 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-04-03 09:06:13,127 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-04-03 09:06:13,127 INFO L130 BoogieDeclarations]: Found specification of procedure panic [2023-04-03 09:06:13,127 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-04-03 09:06:13,127 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2023-04-03 09:06:13,128 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-04-03 09:06:13,128 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-04-03 09:06:13,128 INFO L130 BoogieDeclarations]: Found specification of procedure __get_order [2023-04-03 09:06:13,128 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2023-04-03 09:06:13,128 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2023-04-03 09:06:13,128 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-04-03 09:06:13,128 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2023-04-03 09:06:13,128 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2023-04-03 09:06:13,128 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-04-03 09:06:13,128 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-04-03 09:06:13,128 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_fmt [2023-04-03 09:06:13,128 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-04-03 09:06:13,128 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-04-03 09:06:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure atomic64_read [2023-04-03 09:06:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 09:06:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_long_read [2023-04-03 09:06:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-04-03 09:06:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2023-04-03 09:06:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_4 [2023-04-03 09:06:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-04-03 09:06:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_2 [2023-04-03 09:06:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_5 [2023-04-03 09:06:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_7 [2023-04-03 09:06:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_9 [2023-04-03 09:06:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_11 [2023-04-03 09:06:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_14 [2023-04-03 09:06:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_15 [2023-04-03 09:06:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_16 [2023-04-03 09:06:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_17 [2023-04-03 09:06:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_18 [2023-04-03 09:06:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2023-04-03 09:06:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_6 [2023-04-03 09:06:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_8 [2023-04-03 09:06:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_13 [2023-04-03 09:06:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-04-03 09:06:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_1 [2023-04-03 09:06:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_3 [2023-04-03 09:06:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_10 [2023-04-03 09:06:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_12 [2023-04-03 09:06:13,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock [2023-04-03 09:06:13,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock [2023-04-03 09:06:13,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2023-04-03 09:06:13,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_osst_tape [2023-04-03 09:06:13,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_device [2023-04-03 09:06:13,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of_device [2023-04-03 09:06:13,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_device [2023-04-03 09:06:13,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_osst_int_mutex [2023-04-03 09:06:13,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_osst_int_mutex [2023-04-03 09:06:13,131 INFO L130 BoogieDeclarations]: Found specification of procedure test_ti_thread_flag [2023-04-03 09:06:13,131 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock [2023-04-03 09:06:13,131 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock [2023-04-03 09:06:13,131 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-04-03 09:06:13,131 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2023-04-03 09:06:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-03 09:06:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 09:06:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 09:06:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2023-04-03 09:06:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2023-04-03 09:06:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2023-04-03 09:06:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-04-03 09:06:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2023-04-03 09:06:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2023-04-03 09:06:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages_current [2023-04-03 09:06:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2023-04-03 09:06:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2023-04-03 09:06:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2023-04-03 09:06:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2023-04-03 09:06:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure __register_chrdev [2023-04-03 09:06:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure __unregister_chrdev [2023-04-03 09:06:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure register_chrdev [2023-04-03 09:06:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev [2023-04-03 09:06:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2023-04-03 09:06:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2023-04-03 09:06:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure test_tsk_thread_flag [2023-04-03 09:06:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-03 09:06:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-04-03 09:06:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2023-04-03 09:06:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-04-03 09:06:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-03 09:06:13,134 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 09:06:13,134 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-03 09:06:13,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-04-03 09:06:13,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-03 09:06:13,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-03 09:06:13,134 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-04-03 09:06:13,134 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-04-03 09:06:13,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-04-03 09:06:13,134 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-04-03 09:06:13,134 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2023-04-03 09:06:13,134 INFO L130 BoogieDeclarations]: Found specification of procedure driver_create_file [2023-04-03 09:06:13,134 INFO L130 BoogieDeclarations]: Found specification of procedure driver_remove_file [2023-04-03 09:06:13,134 INFO L130 BoogieDeclarations]: Found specification of procedure __class_create [2023-04-03 09:06:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2023-04-03 09:06:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2023-04-03 09:06:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-04-03 09:06:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure device_create [2023-04-03 09:06:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure device_destroy [2023-04-03 09:06:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2023-04-03 09:06:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_disk [2023-04-03 09:06:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2023-04-03 09:06:13,136 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-04-03 09:06:13,136 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-04-03 09:06:13,136 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-04-03 09:06:13,136 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-04-03 09:06:13,136 INFO L130 BoogieDeclarations]: Found specification of procedure blk_put_request [2023-04-03 09:06:13,136 INFO L130 BoogieDeclarations]: Found specification of procedure __blk_put_request [2023-04-03 09:06:13,136 INFO L130 BoogieDeclarations]: Found specification of procedure blk_get_request [2023-04-03 09:06:13,136 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_map_user [2023-04-03 09:06:13,136 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_unmap_user [2023-04-03 09:06:13,136 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_map_kern [2023-04-03 09:06:13,136 INFO L130 BoogieDeclarations]: Found specification of procedure blk_execute_rq_nowait [2023-04-03 09:06:13,136 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-04-03 09:06:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure sg_assign_page [2023-04-03 09:06:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2023-04-03 09:06:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2023-04-03 09:06:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure sg_next [2023-04-03 09:06:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure __scsi_print_sense [2023-04-03 09:06:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_device_get [2023-04-03 09:06:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_device_put [2023-04-03 09:06:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_register_driver [2023-04-03 09:06:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_block_when_processing_errors [2023-04-03 09:06:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_normalize_sense [2023-04-03 09:06:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sense_desc_find [2023-04-03 09:06:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_get_sense_info_fld [2023-04-03 09:06:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_ioctl [2023-04-03 09:06:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure new_tape_buffer [2023-04-03 09:06:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure enlarge_buffer [2023-04-03 09:06:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure normalize_buffer [2023-04-03 09:06:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_buffer [2023-04-03 09:06:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure from_buffer [2023-04-03 09:06:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure osst_zero_buffer_tail [2023-04-03 09:06:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_to_buffer [2023-04-03 09:06:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_from_buffer [2023-04-03 09:06:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure osst_probe [2023-04-03 09:06:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure osst_remove [2023-04-03 09:06:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure osst_int_ioctl [2023-04-03 09:06:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure osst_set_frame_position [2023-04-03 09:06:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_frame_position [2023-04-03 09:06:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_write_buffer [2023-04-03 09:06:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_error_recovery [2023-04-03 09:06:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure tape_name [2023-04-03 09:06:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure osst_analyze_sense [2023-04-03 09:06:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure osst_chk_result [2023-04-03 09:06:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure osst_end_async [2023-04-03 09:06:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure osst_allocate_request [2023-04-03 09:06:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure osst_release_request [2023-04-03 09:06:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure osst_execute [2023-04-03 09:06:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-04-03 09:06:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-03 09:06:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-04-03 09:06:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure osst_do_scsi [2023-04-03 09:06:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_behind_check [2023-04-03 09:06:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure osst_init_aux [2023-04-03 09:06:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure osst_verify_frame [2023-04-03 09:06:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-04-03 09:06:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_ready [2023-04-03 09:06:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_for_medium [2023-04-03 09:06:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure osst_position_tape_and_confirm [2023-04-03 09:06:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_drive_buffer [2023-04-03 09:06:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_frame [2023-04-03 09:06:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure osst_recover_wait_frame [2023-04-03 09:06:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_frame [2023-04-03 09:06:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure osst_initiate_read [2023-04-03 09:06:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_logical_frame [2023-04-03 09:06:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure osst_seek_logical_blk [2023-04-03 09:06:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_sector [2023-04-03 09:06:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure osst_seek_sector [2023-04-03 09:06:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_back_buffer_and_rewrite [2023-04-03 09:06:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reposition_and_retry [2023-04-03 09:06:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_backward [2023-04-03 09:06:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_forward_slow [2023-04-03 09:06:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_forward_fast [2023-04-03 09:06:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_filemark [2023-04-03 09:06:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_eod [2023-04-03 09:06:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_filler [2023-04-03 09:06:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_write_header [2023-04-03 09:06:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_header [2023-04-03 09:06:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reset_header [2023-04-03 09:06:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_analyze_headers [2023-04-03 09:06:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure osst_analyze_headers [2023-04-03 09:06:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure osst_verify_position [2023-04-03 09:06:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure osst_parse_firmware_rev [2023-04-03 09:06:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure osst_configure_onstream [2023-04-03 09:06:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure cross_eof [2023-04-03 09:06:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_trailer [2023-04-03 09:06:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_buffer [2023-04-03 09:06:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_frame [2023-04-03 09:06:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure do_door_lock [2023-04-03 09:06:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure reset_state [2023-04-03 09:06:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write [2023-04-03 09:06:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read [2023-04-03 09:06:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure osst_log_options [2023-04-03 09:06:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure osst_set_options [2023-04-03 09:06:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure __os_scsi_tape_open [2023-04-03 09:06:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure os_scsi_tape_open [2023-04-03 09:06:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure os_scsi_tape_flush [2023-04-03 09:06:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure os_scsi_tape_close [2023-04-03 09:06:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure osst_ioctl [2023-04-03 09:06:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure osst_compat_ioctl [2023-04-03 09:06:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2023-04-03 09:06:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure validate_options [2023-04-03 09:06:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure osst_supports [2023-04-03 09:06:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure osst_version_show [2023-04-03 09:06:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure osst_create_sysfs_files [2023-04-03 09:06:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure osst_remove_sysfs_files [2023-04-03 09:06:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure osst_adr_rev_show [2023-04-03 09:06:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure osst_linux_media_version_show [2023-04-03 09:06:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure osst_capacity_show [2023-04-03 09:06:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure osst_first_data_ppos_show [2023-04-03 09:06:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure osst_eod_frame_ppos_show [2023-04-03 09:06:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure osst_filemark_cnt_show [2023-04-03 09:06:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_init [2023-04-03 09:06:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_destroy [2023-04-03 09:06:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_add [2023-04-03 09:06:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_cleanup [2023-04-03 09:06:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure init_osst [2023-04-03 09:06:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure exit_osst [2023-04-03 09:06:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-03 09:06:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-04-03 09:06:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value_probe [2023-04-03 09:06:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-03 09:06:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2023-04-03 09:06:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 09:06:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-04-03 09:06:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock [2023-04-03 09:06:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_lock [2023-04-03 09:06:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_lock [2023-04-03 09:06:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_lock [2023-04-03 09:06:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_lock [2023-04-03 09:06:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_lock_of_osst_tape [2023-04-03 09:06:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_osst_tape [2023-04-03 09:06:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_lock_of_osst_tape [2023-04-03 09:06:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_lock_of_osst_tape [2023-04-03 09:06:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_lock_of_osst_tape [2023-04-03 09:06:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_device [2023-04-03 09:06:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_mutex_of_device [2023-04-03 09:06:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2023-04-03 09:06:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_mutex_of_device [2023-04-03 09:06:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_osst_int_mutex [2023-04-03 09:06:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_osst_int_mutex [2023-04-03 09:06:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_osst_int_mutex [2023-04-03 09:06:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_osst_int_mutex [2023-04-03 09:06:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_osst_int_mutex [2023-04-03 09:06:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2023-04-03 09:06:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 09:06:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-03 09:06:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2023-04-03 09:06:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-03 09:06:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 09:06:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 09:06:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-03 09:06:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 09:06:13,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-04-03 09:06:13,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-04-03 09:06:13,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-04-03 09:06:13,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-04-03 09:06:14,173 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 09:06:14,179 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 09:06:31,248 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 09:06:36,069 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 09:06:36,069 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-04-03 09:06:36,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 09:06:36 BoogieIcfgContainer [2023-04-03 09:06:36,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 09:06:36,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 09:06:36,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 09:06:36,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 09:06:36,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 09:06:09" (1/3) ... [2023-04-03 09:06:36,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d39a1c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 09:06:36, skipping insertion in model container [2023-04-03 09:06:36,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 09:06:12" (2/3) ... [2023-04-03 09:06:36,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d39a1c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 09:06:36, skipping insertion in model container [2023-04-03 09:06:36,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 09:06:36" (3/3) ... [2023-04-03 09:06:36,088 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2023-04-03 09:06:36,105 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 09:06:36,105 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 09:06:36,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 09:06:36,220 INFO L357 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=FINITE_AUTOMATA, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@c15a137, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 09:06:36,220 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 09:06:36,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 2949 states, 1876 states have (on average 1.3438166311300639) internal successors, (2521), 1905 states have internal predecessors, (2521), 843 states have call successors, (843), 195 states have call predecessors, (843), 195 states have return successors, (843), 840 states have call predecessors, (843), 843 states have call successors, (843) [2023-04-03 09:06:36,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-04-03 09:06:36,243 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 09:06:36,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 09:06:36,244 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 09:06:36,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 09:06:36,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1276800203, now seen corresponding path program 1 times [2023-04-03 09:06:36,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 09:06:36,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512860690] [2023-04-03 09:06:36,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 09:06:36,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 09:06:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 09:06:36,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 09:06:36,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 09:06:36,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512860690] [2023-04-03 09:06:36,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512860690] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 09:06:36,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 09:06:36,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 09:06:36,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556146423] [2023-04-03 09:06:36,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 09:06:36,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 09:06:36,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 09:06:37,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 09:06:37,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 09:06:37,032 INFO L87 Difference]: Start difference. First operand has 2949 states, 1876 states have (on average 1.3438166311300639) internal successors, (2521), 1905 states have internal predecessors, (2521), 843 states have call successors, (843), 195 states have call predecessors, (843), 195 states have return successors, (843), 840 states have call predecessors, (843), 843 states have call successors, (843) Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (11), 3 states have call predecessors, (11), 1 states have call successors, (11) [2023-04-03 09:06:41,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:06:43,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:06:44,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:06:46,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:06:49,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:06:51,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:06:53,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:06:55,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:06:58,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 09:07:00,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 09:07:03,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 09:07:03,184 INFO L93 Difference]: Finished difference Result 5645 states and 8264 transitions. [2023-04-03 09:07:03,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 09:07:03,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (11), 3 states have call predecessors, (11), 1 states have call successors, (11) Word has length 53 [2023-04-03 09:07:03,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 09:07:03,221 INFO L225 Difference]: With dead ends: 5645 [2023-04-03 09:07:03,222 INFO L226 Difference]: Without dead ends: 2846 [2023-04-03 09:07:03,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 09:07:03,246 INFO L413 NwaCegarLoop]: 3743 mSDtfsCounter, 2 mSDsluCounter, 11212 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14955 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.8s IncrementalHoareTripleChecker+Time [2023-04-03 09:07:03,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 14955 Invalid, 1510 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1500 Invalid, 7 Unknown, 0 Unchecked, 25.8s Time] [2023-04-03 09:07:03,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2023-04-03 09:07:03,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2844. [2023-04-03 09:07:03,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2844 states, 1815 states have (on average 1.3443526170798898) internal successors, (2440), 1842 states have internal predecessors, (2440), 837 states have call successors, (837), 193 states have call predecessors, (837), 191 states have return successors, (828), 825 states have call predecessors, (828), 827 states have call successors, (828) [2023-04-03 09:07:03,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 4105 transitions. [2023-04-03 09:07:03,484 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 4105 transitions. Word has length 53 [2023-04-03 09:07:03,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 09:07:03,486 INFO L495 AbstractCegarLoop]: Abstraction has 2844 states and 4105 transitions. [2023-04-03 09:07:03,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (11), 3 states have call predecessors, (11), 1 states have call successors, (11) [2023-04-03 09:07:03,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 4105 transitions. [2023-04-03 09:07:03,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-04-03 09:07:03,489 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 09:07:03,490 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 09:07:03,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 09:07:03,490 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 09:07:03,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 09:07:03,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1693638239, now seen corresponding path program 1 times [2023-04-03 09:07:03,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 09:07:03,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422341301] [2023-04-03 09:07:03,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 09:07:03,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 09:07:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 09:07:04,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 09:07:04,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 09:07:04,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422341301] [2023-04-03 09:07:04,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422341301] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 09:07:04,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 09:07:04,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 09:07:04,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901555124] [2023-04-03 09:07:04,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 09:07:04,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 09:07:04,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 09:07:04,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 09:07:04,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 09:07:04,199 INFO L87 Difference]: Start difference. First operand 2844 states and 4105 transitions. Second operand has 7 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-04-03 09:07:09,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:07:11,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:07:13,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:07:15,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:07:17,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:07:19,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:07:21,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:07:23,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:07:27,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 09:07:29,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 09:07:32,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 09:07:35,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 09:07:37,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 09:07:39,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 09:07:39,952 INFO L93 Difference]: Finished difference Result 5649 states and 8163 transitions. [2023-04-03 09:07:39,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-03 09:07:39,953 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) Word has length 61 [2023-04-03 09:07:39,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 09:07:39,976 INFO L225 Difference]: With dead ends: 5649 [2023-04-03 09:07:39,976 INFO L226 Difference]: Without dead ends: 2836 [2023-04-03 09:07:39,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 09:07:39,993 INFO L413 NwaCegarLoop]: 3709 mSDtfsCounter, 2 mSDsluCounter, 18529 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 0 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22238 SdHoareTripleChecker+Invalid, 2313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.5s IncrementalHoareTripleChecker+Time [2023-04-03 09:07:39,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 22238 Invalid, 2313 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2301 Invalid, 12 Unknown, 0 Unchecked, 35.5s Time] [2023-04-03 09:07:39,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2836 states. [2023-04-03 09:07:40,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2836 to 2836. [2023-04-03 09:07:40,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2836 states, 1810 states have (on average 1.3441988950276242) internal successors, (2433), 1837 states have internal predecessors, (2433), 835 states have call successors, (835), 193 states have call predecessors, (835), 190 states have return successors, (825), 822 states have call predecessors, (825), 825 states have call successors, (825) [2023-04-03 09:07:40,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2836 states to 2836 states and 4093 transitions. [2023-04-03 09:07:40,128 INFO L78 Accepts]: Start accepts. Automaton has 2836 states and 4093 transitions. Word has length 61 [2023-04-03 09:07:40,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 09:07:40,129 INFO L495 AbstractCegarLoop]: Abstraction has 2836 states and 4093 transitions. [2023-04-03 09:07:40,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-04-03 09:07:40,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2836 states and 4093 transitions. [2023-04-03 09:07:40,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-03 09:07:40,132 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 09:07:40,132 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 09:07:40,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 09:07:40,133 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 09:07:40,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 09:07:40,133 INFO L85 PathProgramCache]: Analyzing trace with hash 987803010, now seen corresponding path program 1 times [2023-04-03 09:07:40,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 09:07:40,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041632895] [2023-04-03 09:07:40,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 09:07:40,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 09:07:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 09:07:40,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 09:07:40,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 09:07:40,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041632895] [2023-04-03 09:07:40,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041632895] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 09:07:40,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 09:07:40,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 09:07:40,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15166000] [2023-04-03 09:07:40,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 09:07:40,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 09:07:40,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 09:07:40,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 09:07:40,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 09:07:40,391 INFO L87 Difference]: Start difference. First operand 2836 states and 4093 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-04-03 09:07:43,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:07:45,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:07:47,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 09:07:47,434 INFO L93 Difference]: Finished difference Result 2838 states and 4094 transitions. [2023-04-03 09:07:47,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 09:07:47,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 73 [2023-04-03 09:07:47,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 09:07:47,455 INFO L225 Difference]: With dead ends: 2838 [2023-04-03 09:07:47,455 INFO L226 Difference]: Without dead ends: 2835 [2023-04-03 09:07:47,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 09:07:47,458 INFO L413 NwaCegarLoop]: 3719 mSDtfsCounter, 4078 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4078 SdHoareTripleChecker+Valid, 3724 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-04-03 09:07:47,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4078 Valid, 3724 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 371 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2023-04-03 09:07:47,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2023-04-03 09:07:47,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2835. [2023-04-03 09:07:47,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 1810 states have (on average 1.343646408839779) internal successors, (2432), 1836 states have internal predecessors, (2432), 834 states have call successors, (834), 193 states have call predecessors, (834), 190 states have return successors, (825), 822 states have call predecessors, (825), 825 states have call successors, (825) [2023-04-03 09:07:47,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 4091 transitions. [2023-04-03 09:07:47,576 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 4091 transitions. Word has length 73 [2023-04-03 09:07:47,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 09:07:47,577 INFO L495 AbstractCegarLoop]: Abstraction has 2835 states and 4091 transitions. [2023-04-03 09:07:47,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-04-03 09:07:47,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 4091 transitions. [2023-04-03 09:07:47,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-03 09:07:47,578 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 09:07:47,579 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 09:07:47,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 09:07:47,579 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 09:07:47,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 09:07:47,579 INFO L85 PathProgramCache]: Analyzing trace with hash 555659671, now seen corresponding path program 1 times [2023-04-03 09:07:47,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 09:07:47,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441738696] [2023-04-03 09:07:47,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 09:07:47,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 09:07:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 09:07:47,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 09:07:47,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 09:07:47,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441738696] [2023-04-03 09:07:47,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441738696] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 09:07:47,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 09:07:47,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 09:07:47,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880051414] [2023-04-03 09:07:47,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 09:07:47,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 09:07:47,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 09:07:47,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 09:07:47,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 09:07:47,921 INFO L87 Difference]: Start difference. First operand 2835 states and 4091 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-04-03 09:07:51,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:07:54,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:07:56,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:07:59,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 09:08:00,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 09:08:00,794 INFO L93 Difference]: Finished difference Result 4822 states and 6914 transitions. [2023-04-03 09:08:00,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 09:08:00,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 74 [2023-04-03 09:08:00,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 09:08:00,836 INFO L225 Difference]: With dead ends: 4822 [2023-04-03 09:08:00,836 INFO L226 Difference]: Without dead ends: 4818 [2023-04-03 09:08:00,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 09:08:00,843 INFO L413 NwaCegarLoop]: 4690 mSDtfsCounter, 2920 mSDsluCounter, 3603 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2920 SdHoareTripleChecker+Valid, 8293 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2023-04-03 09:08:00,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2920 Valid, 8293 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 826 Invalid, 4 Unknown, 0 Unchecked, 12.6s Time] [2023-04-03 09:08:00,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4818 states. [2023-04-03 09:08:01,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4818 to 4814. [2023-04-03 09:08:01,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4814 states, 3044 states have (on average 1.328515111695138) internal successors, (4044), 3086 states have internal predecessors, (4044), 1433 states have call successors, (1433), 344 states have call predecessors, (1433), 336 states have return successors, (1429), 1412 states have call predecessors, (1429), 1423 states have call successors, (1429) [2023-04-03 09:08:01,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4814 states to 4814 states and 6906 transitions. [2023-04-03 09:08:01,171 INFO L78 Accepts]: Start accepts. Automaton has 4814 states and 6906 transitions. Word has length 74 [2023-04-03 09:08:01,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 09:08:01,171 INFO L495 AbstractCegarLoop]: Abstraction has 4814 states and 6906 transitions. [2023-04-03 09:08:01,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-04-03 09:08:01,172 INFO L276 IsEmpty]: Start isEmpty. Operand 4814 states and 6906 transitions. [2023-04-03 09:08:01,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-03 09:08:01,174 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 09:08:01,174 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 09:08:01,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 09:08:01,175 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 09:08:01,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 09:08:01,175 INFO L85 PathProgramCache]: Analyzing trace with hash 44122917, now seen corresponding path program 1 times [2023-04-03 09:08:01,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 09:08:01,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886026053] [2023-04-03 09:08:01,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 09:08:01,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 09:08:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 09:08:01,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 09:08:01,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 09:08:01,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886026053] [2023-04-03 09:08:01,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886026053] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 09:08:01,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 09:08:01,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 09:08:01,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764734384] [2023-04-03 09:08:01,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 09:08:01,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 09:08:01,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 09:08:01,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 09:08:01,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 09:08:01,357 INFO L87 Difference]: Start difference. First operand 4814 states and 6906 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-04-03 09:08:04,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:08:06,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:08:09,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 09:08:09,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 09:08:09,786 INFO L93 Difference]: Finished difference Result 4816 states and 6907 transitions. [2023-04-03 09:08:09,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 09:08:09,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 75 [2023-04-03 09:08:09,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 09:08:09,817 INFO L225 Difference]: With dead ends: 4816 [2023-04-03 09:08:09,818 INFO L226 Difference]: Without dead ends: 4813 [2023-04-03 09:08:09,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 09:08:09,823 INFO L413 NwaCegarLoop]: 3717 mSDtfsCounter, 4074 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4074 SdHoareTripleChecker+Valid, 3722 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-04-03 09:08:09,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4074 Valid, 3722 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 370 Invalid, 3 Unknown, 0 Unchecked, 8.2s Time] [2023-04-03 09:08:09,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2023-04-03 09:08:10,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 4813. [2023-04-03 09:08:10,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4813 states, 3044 states have (on average 1.3281865965834427) internal successors, (4043), 3085 states have internal predecessors, (4043), 1432 states have call successors, (1432), 344 states have call predecessors, (1432), 336 states have return successors, (1429), 1412 states have call predecessors, (1429), 1423 states have call successors, (1429) [2023-04-03 09:08:10,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4813 states to 4813 states and 6904 transitions. [2023-04-03 09:08:10,151 INFO L78 Accepts]: Start accepts. Automaton has 4813 states and 6904 transitions. Word has length 75 [2023-04-03 09:08:10,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 09:08:10,151 INFO L495 AbstractCegarLoop]: Abstraction has 4813 states and 6904 transitions. [2023-04-03 09:08:10,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-04-03 09:08:10,152 INFO L276 IsEmpty]: Start isEmpty. Operand 4813 states and 6904 transitions. [2023-04-03 09:08:10,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-03 09:08:10,154 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 09:08:10,154 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 09:08:10,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 09:08:10,154 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 09:08:10,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 09:08:10,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1366357594, now seen corresponding path program 1 times [2023-04-03 09:08:10,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 09:08:10,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919676719] [2023-04-03 09:08:10,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 09:08:10,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 09:08:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 09:08:10,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 09:08:10,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 09:08:10,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919676719] [2023-04-03 09:08:10,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919676719] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 09:08:10,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 09:08:10,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 09:08:10,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402722394] [2023-04-03 09:08:10,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 09:08:10,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 09:08:10,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 09:08:10,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 09:08:10,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 09:08:10,331 INFO L87 Difference]: Start difference. First operand 4813 states and 6904 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-04-03 09:08:12,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:08:14,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:08:16,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 09:08:17,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 09:08:20,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 09:08:22,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:08:23,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 09:08:23,928 INFO L93 Difference]: Finished difference Result 6730 states and 9525 transitions. [2023-04-03 09:08:23,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 09:08:23,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 76 [2023-04-03 09:08:23,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 09:08:23,976 INFO L225 Difference]: With dead ends: 6730 [2023-04-03 09:08:23,976 INFO L226 Difference]: Without dead ends: 6689 [2023-04-03 09:08:23,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 09:08:23,987 INFO L413 NwaCegarLoop]: 3715 mSDtfsCounter, 2658 mSDsluCounter, 2739 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2658 SdHoareTripleChecker+Valid, 6454 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2023-04-03 09:08:23,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2658 Valid, 6454 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 642 Invalid, 3 Unknown, 0 Unchecked, 13.4s Time] [2023-04-03 09:08:23,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6689 states. [2023-04-03 09:08:24,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6689 to 6685. [2023-04-03 09:08:24,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6685 states, 4216 states have (on average 1.3126185958254268) internal successors, (5534), 4268 states have internal predecessors, (5534), 1962 states have call successors, (1962), 514 states have call predecessors, (1962), 506 states have return successors, (1962), 1943 states have call predecessors, (1962), 1956 states have call successors, (1962) [2023-04-03 09:08:24,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6685 states to 6685 states and 9458 transitions. [2023-04-03 09:08:24,561 INFO L78 Accepts]: Start accepts. Automaton has 6685 states and 9458 transitions. Word has length 76 [2023-04-03 09:08:24,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 09:08:24,563 INFO L495 AbstractCegarLoop]: Abstraction has 6685 states and 9458 transitions. [2023-04-03 09:08:24,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-04-03 09:08:24,563 INFO L276 IsEmpty]: Start isEmpty. Operand 6685 states and 9458 transitions. [2023-04-03 09:08:24,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-03 09:08:24,569 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 09:08:24,570 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 09:08:24,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 09:08:24,570 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 09:08:24,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 09:08:24,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1280836209, now seen corresponding path program 1 times [2023-04-03 09:08:24,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 09:08:24,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920732041] [2023-04-03 09:08:24,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 09:08:24,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 09:08:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 09:08:25,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-03 09:08:25,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 09:08:25,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920732041] [2023-04-03 09:08:25,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920732041] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 09:08:25,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 09:08:25,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 09:08:25,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690571343] [2023-04-03 09:08:25,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 09:08:25,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 09:08:25,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 09:08:25,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 09:08:25,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 09:08:25,094 INFO L87 Difference]: Start difference. First operand 6685 states and 9458 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2023-04-03 09:08:28,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:08:29,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:08:31,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:08:33,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:08:35,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:08:37,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 09:08:38,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 09:08:42,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 09:08:44,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 09:08:46,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 09:08:50,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:08:52,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 09:08:52,507 INFO L93 Difference]: Finished difference Result 13297 states and 18835 transitions. [2023-04-03 09:08:52,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-03 09:08:52,507 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 114 [2023-04-03 09:08:52,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 09:08:52,551 INFO L225 Difference]: With dead ends: 13297 [2023-04-03 09:08:52,552 INFO L226 Difference]: Without dead ends: 6666 [2023-04-03 09:08:52,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-03 09:08:52,599 INFO L413 NwaCegarLoop]: 3712 mSDtfsCounter, 2 mSDsluCounter, 14822 mSDsCounter, 0 mSdLazyCounter, 1870 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18534 SdHoareTripleChecker+Invalid, 1879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1870 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.1s IncrementalHoareTripleChecker+Time [2023-04-03 09:08:52,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 18534 Invalid, 1879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1870 Invalid, 7 Unknown, 0 Unchecked, 27.1s Time] [2023-04-03 09:08:52,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6666 states. [2023-04-03 09:08:53,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6666 to 6666. [2023-04-03 09:08:53,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6666 states, 4208 states have (on average 1.3125) internal successors, (5523), 4258 states have internal predecessors, (5523), 1956 states have call successors, (1956), 509 states have call predecessors, (1956), 501 states have return successors, (1956), 1937 states have call predecessors, (1956), 1950 states have call successors, (1956) [2023-04-03 09:08:53,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6666 states to 6666 states and 9435 transitions. [2023-04-03 09:08:53,087 INFO L78 Accepts]: Start accepts. Automaton has 6666 states and 9435 transitions. Word has length 114 [2023-04-03 09:08:53,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 09:08:53,087 INFO L495 AbstractCegarLoop]: Abstraction has 6666 states and 9435 transitions. [2023-04-03 09:08:53,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2023-04-03 09:08:53,088 INFO L276 IsEmpty]: Start isEmpty. Operand 6666 states and 9435 transitions. [2023-04-03 09:08:53,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-04-03 09:08:53,092 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 09:08:53,092 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 09:08:53,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 09:08:53,092 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 09:08:53,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 09:08:53,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1783020477, now seen corresponding path program 1 times [2023-04-03 09:08:53,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 09:08:53,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028901622] [2023-04-03 09:08:53,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 09:08:53,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 09:08:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 09:08:53,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 09:08:53,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 09:08:53,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028901622] [2023-04-03 09:08:53,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028901622] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 09:08:53,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 09:08:53,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 09:08:53,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470260625] [2023-04-03 09:08:53,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 09:08:53,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 09:08:53,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 09:08:53,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 09:08:53,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 09:08:53,355 INFO L87 Difference]: Start difference. First operand 6666 states and 9435 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-04-03 09:08:55,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:08:57,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:09:00,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 09:09:04,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:09:05,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 09:09:05,820 INFO L93 Difference]: Finished difference Result 13345 states and 18937 transitions. [2023-04-03 09:09:05,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 09:09:05,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 117 [2023-04-03 09:09:05,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 09:09:05,861 INFO L225 Difference]: With dead ends: 13345 [2023-04-03 09:09:05,862 INFO L226 Difference]: Without dead ends: 6737 [2023-04-03 09:09:05,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 09:09:05,908 INFO L413 NwaCegarLoop]: 3692 mSDtfsCounter, 32 mSDsluCounter, 3674 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 7366 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2023-04-03 09:09:05,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 7366 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 755 Invalid, 3 Unknown, 0 Unchecked, 12.2s Time] [2023-04-03 09:09:05,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6737 states. [2023-04-03 09:09:06,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6737 to 6734. [2023-04-03 09:09:06,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6734 states, 4254 states have (on average 1.3147625763986837) internal successors, (5593), 4304 states have internal predecessors, (5593), 1978 states have call successors, (1978), 509 states have call predecessors, (1978), 501 states have return successors, (1980), 1959 states have call predecessors, (1980), 1972 states have call successors, (1980) [2023-04-03 09:09:06,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6734 states to 6734 states and 9551 transitions. [2023-04-03 09:09:06,283 INFO L78 Accepts]: Start accepts. Automaton has 6734 states and 9551 transitions. Word has length 117 [2023-04-03 09:09:06,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 09:09:06,285 INFO L495 AbstractCegarLoop]: Abstraction has 6734 states and 9551 transitions. [2023-04-03 09:09:06,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-04-03 09:09:06,285 INFO L276 IsEmpty]: Start isEmpty. Operand 6734 states and 9551 transitions. [2023-04-03 09:09:06,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-04-03 09:09:06,288 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 09:09:06,288 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 09:09:06,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 09:09:06,289 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 09:09:06,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 09:09:06,289 INFO L85 PathProgramCache]: Analyzing trace with hash 584440786, now seen corresponding path program 1 times [2023-04-03 09:09:06,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 09:09:06,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687775431] [2023-04-03 09:09:06,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 09:09:06,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 09:09:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 09:09:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-03 09:09:06,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 09:09:06,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687775431] [2023-04-03 09:09:06,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687775431] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 09:09:06,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 09:09:06,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 09:09:06,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115481715] [2023-04-03 09:09:06,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 09:09:06,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 09:09:06,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 09:09:06,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 09:09:06,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 09:09:06,724 INFO L87 Difference]: Start difference. First operand 6734 states and 9551 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-04-03 09:09:09,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:09:11,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 09:09:15,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:09:17,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:09:17,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 09:09:17,759 INFO L93 Difference]: Finished difference Result 6740 states and 9555 transitions. [2023-04-03 09:09:17,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 09:09:17,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 123 [2023-04-03 09:09:17,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 09:09:17,797 INFO L225 Difference]: With dead ends: 6740 [2023-04-03 09:09:17,798 INFO L226 Difference]: Without dead ends: 6737 [2023-04-03 09:09:17,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 09:09:17,807 INFO L413 NwaCegarLoop]: 5074 mSDtfsCounter, 2993 mSDsluCounter, 2402 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2993 SdHoareTripleChecker+Valid, 7476 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2023-04-03 09:09:17,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2993 Valid, 7476 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 767 Invalid, 3 Unknown, 0 Unchecked, 10.8s Time] [2023-04-03 09:09:17,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6737 states. [2023-04-03 09:09:18,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6737 to 6733. [2023-04-03 09:09:18,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6733 states, 4254 states have (on average 1.3142924306535027) internal successors, (5591), 4303 states have internal predecessors, (5591), 1977 states have call successors, (1977), 509 states have call predecessors, (1977), 501 states have return successors, (1980), 1959 states have call predecessors, (1980), 1972 states have call successors, (1980) [2023-04-03 09:09:18,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6733 states to 6733 states and 9548 transitions. [2023-04-03 09:09:18,171 INFO L78 Accepts]: Start accepts. Automaton has 6733 states and 9548 transitions. Word has length 123 [2023-04-03 09:09:18,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 09:09:18,171 INFO L495 AbstractCegarLoop]: Abstraction has 6733 states and 9548 transitions. [2023-04-03 09:09:18,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-04-03 09:09:18,171 INFO L276 IsEmpty]: Start isEmpty. Operand 6733 states and 9548 transitions. [2023-04-03 09:09:18,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-04-03 09:09:18,175 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 09:09:18,175 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 09:09:18,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 09:09:18,176 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 09:09:18,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 09:09:18,176 INFO L85 PathProgramCache]: Analyzing trace with hash 343616375, now seen corresponding path program 1 times [2023-04-03 09:09:18,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 09:09:18,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648754056] [2023-04-03 09:09:18,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 09:09:18,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 09:09:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 09:09:18,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 09:09:18,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 09:09:18,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648754056] [2023-04-03 09:09:18,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648754056] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 09:09:18,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 09:09:18,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-03 09:09:18,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355064941] [2023-04-03 09:09:18,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 09:09:18,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-03 09:09:18,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 09:09:18,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-03 09:09:18,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-04-03 09:09:18,963 INFO L87 Difference]: Start difference. First operand 6733 states and 9548 transitions. Second operand has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) [2023-04-03 09:09:22,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:09:30,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:09:32,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:09:35,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 09:09:35,548 INFO L93 Difference]: Finished difference Result 7472 states and 10555 transitions. [2023-04-03 09:09:35,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-03 09:09:35,549 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) Word has length 131 [2023-04-03 09:09:35,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 09:09:35,595 INFO L225 Difference]: With dead ends: 7472 [2023-04-03 09:09:35,596 INFO L226 Difference]: Without dead ends: 7469 [2023-04-03 09:09:35,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-04-03 09:09:35,606 INFO L413 NwaCegarLoop]: 5059 mSDtfsCounter, 7679 mSDsluCounter, 15313 mSDsCounter, 0 mSdLazyCounter, 2065 mSolverCounterSat, 3569 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7680 SdHoareTripleChecker+Valid, 20372 SdHoareTripleChecker+Invalid, 5637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3569 IncrementalHoareTripleChecker+Valid, 2065 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2023-04-03 09:09:35,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7680 Valid, 20372 Invalid, 5637 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3569 Valid, 2065 Invalid, 3 Unknown, 0 Unchecked, 16.2s Time] [2023-04-03 09:09:35,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7469 states. [2023-04-03 09:09:36,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7469 to 7469. [2023-04-03 09:09:36,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7469 states, 4705 states have (on average 1.3098831030818279) internal successors, (6163), 4762 states have internal predecessors, (6163), 2193 states have call successors, (2193), 578 states have call predecessors, (2193), 570 states have return successors, (2196), 2174 states have call predecessors, (2196), 2188 states have call successors, (2196) [2023-04-03 09:09:36,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7469 states to 7469 states and 10552 transitions. [2023-04-03 09:09:36,110 INFO L78 Accepts]: Start accepts. Automaton has 7469 states and 10552 transitions. Word has length 131 [2023-04-03 09:09:36,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 09:09:36,111 INFO L495 AbstractCegarLoop]: Abstraction has 7469 states and 10552 transitions. [2023-04-03 09:09:36,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) [2023-04-03 09:09:36,111 INFO L276 IsEmpty]: Start isEmpty. Operand 7469 states and 10552 transitions. [2023-04-03 09:09:36,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-04-03 09:09:36,124 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 09:09:36,124 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 09:09:36,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 09:09:36,125 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 09:09:36,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 09:09:36,125 INFO L85 PathProgramCache]: Analyzing trace with hash 854660223, now seen corresponding path program 1 times [2023-04-03 09:09:36,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 09:09:36,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944057012] [2023-04-03 09:09:36,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 09:09:36,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 09:09:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 09:09:36,913 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-03 09:09:36,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 09:09:36,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944057012] [2023-04-03 09:09:36,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944057012] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 09:09:36,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 09:09:36,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 09:09:36,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055750060] [2023-04-03 09:09:36,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 09:09:36,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 09:09:36,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 09:09:36,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 09:09:36,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-03 09:09:36,915 INFO L87 Difference]: Start difference. First operand 7469 states and 10552 transitions. Second operand has 9 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (41), 4 states have call predecessors, (41), 5 states have return successors, (38), 5 states have call predecessors, (38), 3 states have call successors, (38) [2023-04-03 09:09:38,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 09:09:42,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:09:44,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:09:46,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:09:48,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:09:50,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:09:52,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:09:54,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-03 09:09:56,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 09:10:00,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 09:10:02,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 09:10:06,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 09:10:09,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 09:10:11,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []