/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-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 04:46:45,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 04:46:45,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 04:46:45,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 04:46:45,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 04:46:45,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 04:46:45,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 04:46:45,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 04:46:45,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 04:46:45,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 04:46:45,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 04:46:45,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 04:46:45,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 04:46:45,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 04:46:45,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 04:46:45,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 04:46:45,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 04:46:45,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 04:46:45,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 04:46:45,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 04:46:45,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 04:46:45,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 04:46:45,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 04:46:45,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 04:46:45,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 04:46:45,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 04:46:45,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 04:46:45,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 04:46:45,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 04:46:45,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 04:46:45,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 04:46:45,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 04:46:45,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 04:46:45,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 04:46:45,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 04:46:45,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 04:46:45,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 04:46:45,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 04:46:45,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 04:46:45,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 04:46:45,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 04:46:45,751 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 04:46:45,780 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 04:46:45,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 04:46:45,780 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 04:46:45,781 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 04:46:45,781 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 04:46:45,781 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 04:46:45,781 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 04:46:45,782 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 04:46:45,782 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 04:46:45,782 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 04:46:45,782 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 04:46:45,782 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 04:46:45,783 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 04:46:45,783 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 04:46:45,783 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 04:46:45,783 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 04:46:45,783 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 04:46:45,783 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 04:46:45,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 04:46:45,784 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 04:46:45,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 04:46:45,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 04:46:45,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 04:46:45,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 04:46:45,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 04:46:45,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 04:46:45,784 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 04:46:45,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 04:46:45,784 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 04:46:45,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 04:46:45,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 04:46:45,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 04:46:45,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 04:46:45,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 04:46:45,785 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 04:46:45,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 04:46:45,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 04:46:45,786 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 04:46:45,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 04:46:45,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 04:46:45,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 04:46:45,786 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 04:46:45,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 04:46:45,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 04:46:45,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 04:46:45,998 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 04:46:45,999 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 04:46:45,999 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2023-04-03 04:46:46,889 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 04:46:47,301 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 04:46:47,302 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2023-04-03 04:46:47,334 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/246b56efe/10f8e39c9df34499b1c1c743f348621f/FLAGbde83b910 [2023-04-03 04:46:47,348 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/246b56efe/10f8e39c9df34499b1c1c743f348621f [2023-04-03 04:46:47,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 04:46:47,351 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 04:46:47,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 04:46:47,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 04:46:47,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 04:46:47,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 04:46:47" (1/1) ... [2023-04-03 04:46:47,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5146f2f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:46:47, skipping insertion in model container [2023-04-03 04:46:47,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 04:46:47" (1/1) ... [2023-04-03 04:46:47,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 04:46:47,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 04:46:48,129 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-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i[163507,163520] [2023-04-03 04:46:48,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 04:46:48,440 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 04:46:48,527 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-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i[163507,163520] [2023-04-03 04:46:48,581 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 04:46:48,640 INFO L208 MainTranslator]: Completed translation [2023-04-03 04:46:48,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:46:48 WrapperNode [2023-04-03 04:46:48,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 04:46:48,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 04:46:48,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 04:46:48,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 04:46:48,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:46:48" (1/1) ... [2023-04-03 04:46:48,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:46:48" (1/1) ... [2023-04-03 04:46:48,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:46:48" (1/1) ... [2023-04-03 04:46:48,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:46:48" (1/1) ... [2023-04-03 04:46:48,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:46:48" (1/1) ... [2023-04-03 04:46:48,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:46:48" (1/1) ... [2023-04-03 04:46:48,782 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:46:48" (1/1) ... [2023-04-03 04:46:48,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:46:48" (1/1) ... [2023-04-03 04:46:48,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 04:46:48,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 04:46:48,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 04:46:48,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 04:46:48,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:46:48" (1/1) ... [2023-04-03 04:46:48,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 04:46:48,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 04:46:48,839 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 04:46:48,856 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 04:46:48,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 04:46:48,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 04:46:48,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2023-04-03 04:46:48,867 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 04:46:48,867 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-04-03 04:46:48,867 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-04-03 04:46:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-04-03 04:46:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2023-04-03 04:46:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-04-03 04:46:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-04-03 04:46:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab16p [2023-04-03 04:46:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2023-04-03 04:46:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2023-04-03 04:46:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-04-03 04:46:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2023-04-03 04:46:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-04-03 04:46:48,869 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2023-04-03 04:46:48,869 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-04-03 04:46:48,869 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2023-04-03 04:46:48,869 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-04-03 04:46:48,869 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-04-03 04:46:48,869 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_trylock_bh [2023-04-03 04:46:48,869 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2023-04-03 04:46:48,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-04-03 04:46:48,869 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-04-03 04:46:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-04-03 04:46:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-04-03 04:46:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-04-03 04:46:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2023-04-03 04:46:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_head_init [2023-04-03 04:46:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2023-04-03 04:46:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2023-04-03 04:46:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2023-04-03 04:46:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2023-04-03 04:46:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2023-04-03 04:46:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2023-04-03 04:46:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 04:46:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-03 04:46:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-04-03 04:46:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-04-03 04:46:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2023-04-03 04:46:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-04-03 04:46:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-04-03 04:46:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-04-03 04:46:48,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2023-04-03 04:46:48,872 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_get_baud_rate [2023-04-03 04:46:48,872 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2023-04-03 04:46:48,872 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2023-04-03 04:46:48,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_print_buffer [2023-04-03 04:46:48,873 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_get [2023-04-03 04:46:48,873 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_put [2023-04-03 04:46:48,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_open [2023-04-03 04:46:48,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_close [2023-04-03 04:46:48,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_hangup [2023-04-03 04:46:48,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_read [2023-04-03 04:46:48,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_write [2023-04-03 04:46:48,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_synctty_ioctl [2023-04-03 04:46:48,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_poll [2023-04-03 04:46:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_receive [2023-04-03 04:46:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_wakeup [2023-04-03 04:46:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_init [2023-04-03 04:46:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_ioctl [2023-04-03 04:46:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_process [2023-04-03 04:46:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_txmunge [2023-04-03 04:46:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_send [2023-04-03 04:46:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_push [2023-04-03 04:46:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_flush_output [2023-04-03 04:46:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_input [2023-04-03 04:46:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_cleanup [2023-04-03 04:46:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_ppp_channel_ops_2 [2023-04-03 04:46:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_target_type_1 [2023-04-03 04:46:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 04:46:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2023-04-03 04:46:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2023-04-03 04:46:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2023-04-03 04:46:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2023-04-03 04:46:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2023-04-03 04:46:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_12 [2023-04-03 04:46:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_13 [2023-04-03 04:46:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_dequeue_14 [2023-04-03 04:46:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_15 [2023-04-03 04:46:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_16 [2023-04-03 04:46:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_17 [2023-04-03 04:46:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_18 [2023-04-03 04:46:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_19 [2023-04-03 04:46:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_20 [2023-04-03 04:46:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2023-04-03 04:46:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2023-04-03 04:46:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2023-04-03 04:46:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2023-04-03 04:46:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2023-04-03 04:46:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-04-03 04:46:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2023-04-03 04:46:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2023-04-03 04:46:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2023-04-03 04:46:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2023-04-03 04:46:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-03 04:46:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2023-04-03 04:46:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2023-04-03 04:46:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2023-04-03 04:46:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2023-04-03 04:46:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2023-04-03 04:46:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-03 04:46:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user_overflow [2023-04-03 04:46:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user_overflow [2023-04-03 04:46:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-04-03 04:46:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-04-03 04:46:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __tasklet_schedule [2023-04-03 04:46:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-04-03 04:46:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-04-03 04:46:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock [2023-04-03 04:46:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock [2023-04-03 04:46:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_bh [2023-04-03 04:46:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irq [2023-04-03 04:46:48,879 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-04-03 04:46:48,879 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_trylock_bh [2023-04-03 04:46:48,879 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_bh [2023-04-03 04:46:48,879 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irq [2023-04-03 04:46:48,880 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2023-04-03 04:46:48,880 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_irq [2023-04-03 04:46:48,880 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_irq [2023-04-03 04:46:48,881 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2023-04-03 04:46:48,882 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-04-03 04:46:48,883 INFO L138 BoogieDeclarations]: Found implementation of procedure n_tty_ioctl_helper [2023-04-03 04:46:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_index [2023-04-03 04:46:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_input [2023-04-03 04:46:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_input_error [2023-04-03 04:46:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2023-04-03 04:46:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_register_channel [2023-04-03 04:46:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unit_number [2023-04-03 04:46:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2023-04-03 04:46:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2023-04-03 04:46:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-04-03 04:46:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2023-04-03 04:46:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2023-04-03 04:46:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-04-03 04:46:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2023-04-03 04:46:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2023-04-03 04:46:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2023-04-03 04:46:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2023-04-03 04:46:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2023-04-03 04:46:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_mode_ioctl [2023-04-03 04:46:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_register_ldisc [2023-04-03 04:46:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_termios_baud_rate [2023-04-03 04:46:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_ldisc [2023-04-03 04:46:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unthrottle [2023-04-03 04:46:48,893 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2023-04-03 04:46:48,893 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-04-03 04:46:48,893 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-04-03 04:46:48,893 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-04-03 04:46:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 04:46:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 04:46:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-03 04:46:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-03 04:46:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 04:46:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 04:46:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-04-03 04:46:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-04-03 04:46:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-04-03 04:46:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-04-03 04:46:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2023-04-03 04:46:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-04-03 04:46:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 04:46:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-04-03 04:46:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure __swab16p [2023-04-03 04:46:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2023-04-03 04:46:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-04-03 04:46:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2023-04-03 04:46:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-04-03 04:46:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2023-04-03 04:46:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2023-04-03 04:46:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 04:46:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-04-03 04:46:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2023-04-03 04:46:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-04-03 04:46:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_bh [2023-04-03 04:46:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irq [2023-04-03 04:46:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-04-03 04:46:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_trylock_bh [2023-04-03 04:46:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_bh [2023-04-03 04:46:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irq [2023-04-03 04:46:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2023-04-03 04:46:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock [2023-04-03 04:46:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_irq [2023-04-03 04:46:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock [2023-04-03 04:46:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_irq [2023-04-03 04:46:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-04-03 04:46:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2023-04-03 04:46:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-04-03 04:46:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2023-04-03 04:46:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-04-03 04:46:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-04-03 04:46:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure spin_trylock_bh [2023-04-03 04:46:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-04-03 04:46:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2023-04-03 04:46:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-03 04:46:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 04:46:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2023-04-03 04:46:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2023-04-03 04:46:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-04-03 04:46:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-03 04:46:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-04-03 04:46:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-04-03 04:46:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-04-03 04:46:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-04-03 04:46:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-04-03 04:46:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-04-03 04:46:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user_overflow [2023-04-03 04:46:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2023-04-03 04:46:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-04-03 04:46:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-04-03 04:46:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2023-04-03 04:46:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2023-04-03 04:46:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2023-04-03 04:46:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2023-04-03 04:46:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_12 [2023-04-03 04:46:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_13 [2023-04-03 04:46:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_16 [2023-04-03 04:46:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_19 [2023-04-03 04:46:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_20 [2023-04-03 04:46:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2023-04-03 04:46:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_17 [2023-04-03 04:46:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_18 [2023-04-03 04:46:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2023-04-03 04:46:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-03 04:46:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_head_init [2023-04-03 04:46:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-03 04:46:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2023-04-03 04:46:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2023-04-03 04:46:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_dequeue_14 [2023-04-03 04:46:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2023-04-03 04:46:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-04-03 04:46:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2023-04-03 04:46:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2023-04-03 04:46:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2023-04-03 04:46:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2023-04-03 04:46:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2023-04-03 04:46:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2023-04-03 04:46:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2023-04-03 04:46:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_15 [2023-04-03 04:46:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2023-04-03 04:46:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-04-03 04:46:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2023-04-03 04:46:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2023-04-03 04:46:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-03 04:46:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-03 04:46:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-03 04:46:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2023-04-03 04:46:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-03 04:46:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2023-04-03 04:46:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 04:46:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-03 04:46:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-04-03 04:46:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-04-03 04:46:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2023-04-03 04:46:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-04-03 04:46:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-04-03 04:46:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2023-04-03 04:46:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_ppp_channel_ops_2 [2023-04-03 04:46:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_target_type_1 [2023-04-03 04:46:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unthrottle [2023-04-03 04:46:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure tty_termios_baud_rate [2023-04-03 04:46:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure tty_get_baud_rate [2023-04-03 04:46:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure tty_mode_ioctl [2023-04-03 04:46:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure tty_register_ldisc [2023-04-03 04:46:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_ldisc [2023-04-03 04:46:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure n_tty_ioctl_helper [2023-04-03 04:46:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure __tasklet_schedule [2023-04-03 04:46:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2023-04-03 04:46:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2023-04-03 04:46:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2023-04-03 04:46:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2023-04-03 04:46:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_input [2023-04-03 04:46:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_input_error [2023-04-03 04:46:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_register_channel [2023-04-03 04:46:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2023-04-03 04:46:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_index [2023-04-03 04:46:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unit_number [2023-04-03 04:46:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2023-04-03 04:46:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_txmunge [2023-04-03 04:46:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_send [2023-04-03 04:46:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_ioctl [2023-04-03 04:46:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_process [2023-04-03 04:46:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_push [2023-04-03 04:46:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_flush_output [2023-04-03 04:46:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_input [2023-04-03 04:46:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_print_buffer [2023-04-03 04:46:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure sp_get [2023-04-03 04:46:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure sp_put [2023-04-03 04:46:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_open [2023-04-03 04:46:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_close [2023-04-03 04:46:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_hangup [2023-04-03 04:46:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_read [2023-04-03 04:46:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_write [2023-04-03 04:46:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_synctty_ioctl [2023-04-03 04:46:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_poll [2023-04-03 04:46:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_receive [2023-04-03 04:46:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_wakeup [2023-04-03 04:46:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_init [2023-04-03 04:46:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2023-04-03 04:46:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_cleanup [2023-04-03 04:46:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-03 04:46:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-03 04:46:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 04:46:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2023-04-03 04:46:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2023-04-03 04:46:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2023-04-03 04:46:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2023-04-03 04:46:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2023-04-03 04:46:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-04-03 04:46:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2023-04-03 04:46:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2023-04-03 04:46:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2023-04-03 04:46:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2023-04-03 04:46:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2023-04-03 04:46:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2023-04-03 04:46:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2023-04-03 04:46:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-03 04:46:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 04:46:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 04:46:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-03 04:46:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 04:46:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-04-03 04:46:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-04-03 04:46:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-04-03 04:46:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-04-03 04:46:49,326 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 04:46:49,329 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 04:46:49,473 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-04-03 04:46:50,563 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 04:46:50,876 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 04:46:50,876 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-04-03 04:46:50,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 04:46:50 BoogieIcfgContainer [2023-04-03 04:46:50,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 04:46:50,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 04:46:50,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 04:46:50,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 04:46:50,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 04:46:47" (1/3) ... [2023-04-03 04:46:50,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633d6090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 04:46:50, skipping insertion in model container [2023-04-03 04:46:50,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 04:46:48" (2/3) ... [2023-04-03 04:46:50,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633d6090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 04:46:50, skipping insertion in model container [2023-04-03 04:46:50,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 04:46:50" (3/3) ... [2023-04-03 04:46:50,886 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2023-04-03 04:46:50,899 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 04:46:50,900 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 04:46:50,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 04:46:50,943 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;@79ea8d72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 04:46:50,944 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 04:46:50,948 INFO L276 IsEmpty]: Start isEmpty. Operand has 832 states, 473 states have (on average 1.27061310782241) internal successors, (601), 502 states have internal predecessors, (601), 218 states have call successors, (218), 130 states have call predecessors, (218), 129 states have return successors, (214), 211 states have call predecessors, (214), 214 states have call successors, (214) [2023-04-03 04:46:50,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-03 04:46:50,959 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:46:50,959 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:46:50,960 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:46:50,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:46:50,963 INFO L85 PathProgramCache]: Analyzing trace with hash -484194554, now seen corresponding path program 1 times [2023-04-03 04:46:50,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:46:50,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781693526] [2023-04-03 04:46:50,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:46:50,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:46:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:46:51,396 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-04-03 04:46:51,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:46:51,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781693526] [2023-04-03 04:46:51,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781693526] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:46:51,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 04:46:51,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 04:46:51,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833812288] [2023-04-03 04:46:51,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:46:51,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 04:46:51,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:46:51,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 04:46:51,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:46:51,441 INFO L87 Difference]: Start difference. First operand has 832 states, 473 states have (on average 1.27061310782241) internal successors, (601), 502 states have internal predecessors, (601), 218 states have call successors, (218), 130 states have call predecessors, (218), 129 states have return successors, (214), 211 states have call predecessors, (214), 214 states have call successors, (214) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-04-03 04:46:51,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:46:51,997 INFO L93 Difference]: Finished difference Result 2240 states and 2883 transitions. [2023-04-03 04:46:51,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 04:46:51,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 97 [2023-04-03 04:46:52,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:46:52,015 INFO L225 Difference]: With dead ends: 2240 [2023-04-03 04:46:52,015 INFO L226 Difference]: Without dead ends: 1470 [2023-04-03 04:46:52,021 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 04:46:52,024 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 889 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 04:46:52,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 1708 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 04:46:52,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2023-04-03 04:46:52,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1470. [2023-04-03 04:46:52,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 852 states have (on average 1.2629107981220657) internal successors, (1076), 890 states have internal predecessors, (1076), 383 states have call successors, (383), 237 states have call predecessors, (383), 234 states have return successors, (380), 376 states have call predecessors, (380), 380 states have call successors, (380) [2023-04-03 04:46:52,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1839 transitions. [2023-04-03 04:46:52,138 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 1839 transitions. Word has length 97 [2023-04-03 04:46:52,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:46:52,139 INFO L495 AbstractCegarLoop]: Abstraction has 1470 states and 1839 transitions. [2023-04-03 04:46:52,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-04-03 04:46:52,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 1839 transitions. [2023-04-03 04:46:52,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 04:46:52,148 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:46:52,148 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:46:52,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 04:46:52,149 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:46:52,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:46:52,149 INFO L85 PathProgramCache]: Analyzing trace with hash -897295623, now seen corresponding path program 1 times [2023-04-03 04:46:52,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:46:52,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931692936] [2023-04-03 04:46:52,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:46:52,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:46:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:46:52,478 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-04-03 04:46:52,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:46:52,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931692936] [2023-04-03 04:46:52,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931692936] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:46:52,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 04:46:52,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 04:46:52,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713855279] [2023-04-03 04:46:52,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:46:52,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 04:46:52,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:46:52,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 04:46:52,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 04:46:52,481 INFO L87 Difference]: Start difference. First operand 1470 states and 1839 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-04-03 04:46:53,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:46:53,449 INFO L93 Difference]: Finished difference Result 2916 states and 3702 transitions. [2023-04-03 04:46:53,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-03 04:46:53,450 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 100 [2023-04-03 04:46:53,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:46:53,466 INFO L225 Difference]: With dead ends: 2916 [2023-04-03 04:46:53,466 INFO L226 Difference]: Without dead ends: 2894 [2023-04-03 04:46:53,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-04-03 04:46:53,471 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 944 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 3949 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 04:46:53,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 3949 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 04:46:53,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2023-04-03 04:46:53,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 2894. [2023-04-03 04:46:53,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2894 states, 1681 states have (on average 1.2641284949434861) internal successors, (2125), 1761 states have internal predecessors, (2125), 746 states have call successors, (746), 465 states have call predecessors, (746), 466 states have return successors, (805), 735 states have call predecessors, (805), 743 states have call successors, (805) [2023-04-03 04:46:53,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2894 states to 2894 states and 3676 transitions. [2023-04-03 04:46:53,588 INFO L78 Accepts]: Start accepts. Automaton has 2894 states and 3676 transitions. Word has length 100 [2023-04-03 04:46:53,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:46:53,589 INFO L495 AbstractCegarLoop]: Abstraction has 2894 states and 3676 transitions. [2023-04-03 04:46:53,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-04-03 04:46:53,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2894 states and 3676 transitions. [2023-04-03 04:46:53,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-04-03 04:46:53,600 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:46:53,600 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2023-04-03 04:46:53,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 04:46:53,600 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:46:53,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:46:53,602 INFO L85 PathProgramCache]: Analyzing trace with hash 564776617, now seen corresponding path program 1 times [2023-04-03 04:46:53,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:46:53,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404504485] [2023-04-03 04:46:53,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:46:53,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:46:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:46:53,709 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-04-03 04:46:53,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:46:53,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404504485] [2023-04-03 04:46:53,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404504485] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:46:53,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 04:46:53,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 04:46:53,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832429715] [2023-04-03 04:46:53,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:46:53,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 04:46:53,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:46:53,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 04:46:53,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:46:53,712 INFO L87 Difference]: Start difference. First operand 2894 states and 3676 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-04-03 04:46:54,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:46:54,080 INFO L93 Difference]: Finished difference Result 7214 states and 9139 transitions. [2023-04-03 04:46:54,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 04:46:54,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 159 [2023-04-03 04:46:54,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:46:54,097 INFO L225 Difference]: With dead ends: 7214 [2023-04-03 04:46:54,097 INFO L226 Difference]: Without dead ends: 4352 [2023-04-03 04:46:54,105 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 04:46:54,105 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 515 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 04:46:54,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 1639 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 04:46:54,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4352 states. [2023-04-03 04:46:54,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4352 to 4339. [2023-04-03 04:46:54,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4339 states, 2569 states have (on average 1.261191124951343) internal successors, (3240), 2672 states have internal predecessors, (3240), 1079 states have call successors, (1079), 685 states have call predecessors, (1079), 690 states have return successors, (1170), 1065 states have call predecessors, (1170), 1076 states have call successors, (1170) [2023-04-03 04:46:54,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4339 states to 4339 states and 5489 transitions. [2023-04-03 04:46:54,267 INFO L78 Accepts]: Start accepts. Automaton has 4339 states and 5489 transitions. Word has length 159 [2023-04-03 04:46:54,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:46:54,269 INFO L495 AbstractCegarLoop]: Abstraction has 4339 states and 5489 transitions. [2023-04-03 04:46:54,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-04-03 04:46:54,269 INFO L276 IsEmpty]: Start isEmpty. Operand 4339 states and 5489 transitions. [2023-04-03 04:46:54,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-04-03 04:46:54,276 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:46:54,276 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2023-04-03 04:46:54,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 04:46:54,278 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:46:54,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:46:54,289 INFO L85 PathProgramCache]: Analyzing trace with hash 2125724042, now seen corresponding path program 1 times [2023-04-03 04:46:54,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:46:54,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130117566] [2023-04-03 04:46:54,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:46:54,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:46:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:46:54,408 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-04-03 04:46:54,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:46:54,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130117566] [2023-04-03 04:46:54,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130117566] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:46:54,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 04:46:54,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 04:46:54,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852412286] [2023-04-03 04:46:54,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:46:54,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 04:46:54,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:46:54,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 04:46:54,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:46:54,410 INFO L87 Difference]: Start difference. First operand 4339 states and 5489 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-04-03 04:46:54,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:46:54,822 INFO L93 Difference]: Finished difference Result 10665 states and 13439 transitions. [2023-04-03 04:46:54,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 04:46:54,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 177 [2023-04-03 04:46:54,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:46:54,856 INFO L225 Difference]: With dead ends: 10665 [2023-04-03 04:46:54,856 INFO L226 Difference]: Without dead ends: 6358 [2023-04-03 04:46:54,868 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 04:46:54,872 INFO L413 NwaCegarLoop]: 1213 mSDtfsCounter, 639 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 2013 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 04:46:54,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 2013 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 04:46:54,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6358 states. [2023-04-03 04:46:55,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6358 to 6347. [2023-04-03 04:46:55,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6347 states, 3759 states have (on average 1.266560255387071) internal successors, (4761), 3932 states have internal predecessors, (4761), 1543 states have call successors, (1543), 1035 states have call predecessors, (1543), 1044 states have return successors, (1670), 1519 states have call predecessors, (1670), 1540 states have call successors, (1670) [2023-04-03 04:46:55,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6347 states to 6347 states and 7974 transitions. [2023-04-03 04:46:55,103 INFO L78 Accepts]: Start accepts. Automaton has 6347 states and 7974 transitions. Word has length 177 [2023-04-03 04:46:55,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:46:55,103 INFO L495 AbstractCegarLoop]: Abstraction has 6347 states and 7974 transitions. [2023-04-03 04:46:55,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-04-03 04:46:55,104 INFO L276 IsEmpty]: Start isEmpty. Operand 6347 states and 7974 transitions. [2023-04-03 04:46:55,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-04-03 04:46:55,115 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:46:55,115 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:46:55,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 04:46:55,115 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:46:55,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:46:55,115 INFO L85 PathProgramCache]: Analyzing trace with hash 2081084242, now seen corresponding path program 1 times [2023-04-03 04:46:55,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:46:55,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514563070] [2023-04-03 04:46:55,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:46:55,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:46:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:46:55,335 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-04-03 04:46:55,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:46:55,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514563070] [2023-04-03 04:46:55,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514563070] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:46:55,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 04:46:55,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 04:46:55,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146444850] [2023-04-03 04:46:55,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:46:55,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 04:46:55,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:46:55,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 04:46:55,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:46:55,337 INFO L87 Difference]: Start difference. First operand 6347 states and 7974 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2023-04-03 04:46:55,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:46:55,837 INFO L93 Difference]: Finished difference Result 15561 states and 19539 transitions. [2023-04-03 04:46:55,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 04:46:55,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 194 [2023-04-03 04:46:55,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:46:55,880 INFO L225 Difference]: With dead ends: 15561 [2023-04-03 04:46:55,880 INFO L226 Difference]: Without dead ends: 9258 [2023-04-03 04:46:55,901 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 04:46:55,901 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 736 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 04:46:55,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1643 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 04:46:55,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9258 states. [2023-04-03 04:46:56,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9258 to 9232. [2023-04-03 04:46:56,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9232 states, 5533 states have (on average 1.2629676486535333) internal successors, (6988), 5779 states have internal predecessors, (6988), 2158 states have call successors, (2158), 1525 states have call predecessors, (2158), 1540 states have return successors, (2343), 2131 states have call predecessors, (2343), 2155 states have call successors, (2343) [2023-04-03 04:46:56,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9232 states to 9232 states and 11489 transitions. [2023-04-03 04:46:56,256 INFO L78 Accepts]: Start accepts. Automaton has 9232 states and 11489 transitions. Word has length 194 [2023-04-03 04:46:56,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:46:56,256 INFO L495 AbstractCegarLoop]: Abstraction has 9232 states and 11489 transitions. [2023-04-03 04:46:56,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2023-04-03 04:46:56,256 INFO L276 IsEmpty]: Start isEmpty. Operand 9232 states and 11489 transitions. [2023-04-03 04:46:56,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-04-03 04:46:56,268 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:46:56,268 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:46:56,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 04:46:56,268 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:46:56,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:46:56,268 INFO L85 PathProgramCache]: Analyzing trace with hash -323268530, now seen corresponding path program 1 times [2023-04-03 04:46:56,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:46:56,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675970345] [2023-04-03 04:46:56,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:46:56,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:46:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:46:56,349 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2023-04-03 04:46:56,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:46:56,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675970345] [2023-04-03 04:46:56,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675970345] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:46:56,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 04:46:56,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 04:46:56,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403360624] [2023-04-03 04:46:56,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:46:56,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 04:46:56,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:46:56,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 04:46:56,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 04:46:56,351 INFO L87 Difference]: Start difference. First operand 9232 states and 11489 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-04-03 04:46:56,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:46:56,732 INFO L93 Difference]: Finished difference Result 13932 states and 17558 transitions. [2023-04-03 04:46:56,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 04:46:56,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 198 [2023-04-03 04:46:56,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:46:56,782 INFO L225 Difference]: With dead ends: 13932 [2023-04-03 04:46:56,782 INFO L226 Difference]: Without dead ends: 9272 [2023-04-03 04:46:56,794 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 04:46:56,794 INFO L413 NwaCegarLoop]: 847 mSDtfsCounter, 4 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 04:46:56,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1688 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 04:46:56,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9272 states. [2023-04-03 04:46:57,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9272 to 9252. [2023-04-03 04:46:57,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9252 states, 5553 states have (on average 1.262020529443544) internal successors, (7008), 5799 states have internal predecessors, (7008), 2158 states have call successors, (2158), 1525 states have call predecessors, (2158), 1540 states have return successors, (2343), 2131 states have call predecessors, (2343), 2155 states have call successors, (2343) [2023-04-03 04:46:57,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9252 states to 9252 states and 11509 transitions. [2023-04-03 04:46:57,050 INFO L78 Accepts]: Start accepts. Automaton has 9252 states and 11509 transitions. Word has length 198 [2023-04-03 04:46:57,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:46:57,050 INFO L495 AbstractCegarLoop]: Abstraction has 9252 states and 11509 transitions. [2023-04-03 04:46:57,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-04-03 04:46:57,050 INFO L276 IsEmpty]: Start isEmpty. Operand 9252 states and 11509 transitions. [2023-04-03 04:46:57,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-04-03 04:46:57,063 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:46:57,063 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 04:46:57,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 04:46:57,063 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:46:57,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:46:57,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1522466924, now seen corresponding path program 1 times [2023-04-03 04:46:57,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:46:57,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016795997] [2023-04-03 04:46:57,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:46:57,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:46:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:46:57,481 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2023-04-03 04:46:57,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:46:57,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016795997] [2023-04-03 04:46:57,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016795997] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:46:57,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 04:46:57,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 04:46:57,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862138762] [2023-04-03 04:46:57,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:46:57,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 04:46:57,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:46:57,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 04:46:57,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-04-03 04:46:57,483 INFO L87 Difference]: Start difference. First operand 9252 states and 11509 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 5 states have call successors, (37), 4 states have call predecessors, (37), 3 states have return successors, (34), 5 states have call predecessors, (34), 5 states have call successors, (34) [2023-04-03 04:47:01,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:47:01,027 INFO L93 Difference]: Finished difference Result 21254 states and 26912 transitions. [2023-04-03 04:47:01,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-03 04:47:01,027 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 5 states have call successors, (37), 4 states have call predecessors, (37), 3 states have return successors, (34), 5 states have call predecessors, (34), 5 states have call successors, (34) Word has length 199 [2023-04-03 04:47:01,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:47:01,072 INFO L225 Difference]: With dead ends: 21254 [2023-04-03 04:47:01,073 INFO L226 Difference]: Without dead ends: 12046 [2023-04-03 04:47:01,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-04-03 04:47:01,102 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 2393 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 3792 mSolverCounterSat, 1474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2613 SdHoareTripleChecker+Valid, 2102 SdHoareTripleChecker+Invalid, 5266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1474 IncrementalHoareTripleChecker+Valid, 3792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-03 04:47:01,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2613 Valid, 2102 Invalid, 5266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1474 Valid, 3792 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-04-03 04:47:01,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12046 states. [2023-04-03 04:47:01,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12046 to 11640. [2023-04-03 04:47:01,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11640 states, 6913 states have (on average 1.2451902213221466) internal successors, (8608), 7229 states have internal predecessors, (8608), 2762 states have call successors, (2762), 1821 states have call predecessors, (2762), 1964 states have return successors, (3241), 2835 states have call predecessors, (3241), 2759 states have call successors, (3241) [2023-04-03 04:47:01,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11640 states to 11640 states and 14611 transitions. [2023-04-03 04:47:01,555 INFO L78 Accepts]: Start accepts. Automaton has 11640 states and 14611 transitions. Word has length 199 [2023-04-03 04:47:01,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:47:01,556 INFO L495 AbstractCegarLoop]: Abstraction has 11640 states and 14611 transitions. [2023-04-03 04:47:01,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 5 states have call successors, (37), 4 states have call predecessors, (37), 3 states have return successors, (34), 5 states have call predecessors, (34), 5 states have call successors, (34) [2023-04-03 04:47:01,556 INFO L276 IsEmpty]: Start isEmpty. Operand 11640 states and 14611 transitions. [2023-04-03 04:47:01,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-04-03 04:47:01,574 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:47:01,574 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:47:01,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 04:47:01,574 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:47:01,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:47:01,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1642719840, now seen corresponding path program 1 times [2023-04-03 04:47:01,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:47:01,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182288193] [2023-04-03 04:47:01,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:47:01,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:47:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:47:01,857 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2023-04-03 04:47:01,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:47:01,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182288193] [2023-04-03 04:47:01,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182288193] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:47:01,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 04:47:01,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 04:47:01,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184567577] [2023-04-03 04:47:01,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:47:01,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 04:47:01,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:47:01,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 04:47:01,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 04:47:01,859 INFO L87 Difference]: Start difference. First operand 11640 states and 14611 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (44), 3 states have call predecessors, (44), 2 states have call successors, (44) [2023-04-03 04:47:02,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:47:02,424 INFO L93 Difference]: Finished difference Result 23370 states and 29589 transitions. [2023-04-03 04:47:02,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 04:47:02,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (44), 3 states have call predecessors, (44), 2 states have call successors, (44) Word has length 268 [2023-04-03 04:47:02,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:47:02,462 INFO L225 Difference]: With dead ends: 23370 [2023-04-03 04:47:02,462 INFO L226 Difference]: Without dead ends: 11774 [2023-04-03 04:47:02,489 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 04:47:02,490 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 2 mSDsluCounter, 2519 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3365 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 04:47:02,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3365 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 04:47:02,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11774 states. [2023-04-03 04:47:02,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11774 to 11728. [2023-04-03 04:47:02,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11728 states, 6979 states have (on average 1.2428714715575298) internal successors, (8674), 7295 states have internal predecessors, (8674), 2762 states have call successors, (2762), 1821 states have call predecessors, (2762), 1986 states have return successors, (3271), 2857 states have call predecessors, (3271), 2759 states have call successors, (3271) [2023-04-03 04:47:02,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11728 states to 11728 states and 14707 transitions. [2023-04-03 04:47:02,848 INFO L78 Accepts]: Start accepts. Automaton has 11728 states and 14707 transitions. Word has length 268 [2023-04-03 04:47:02,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:47:02,849 INFO L495 AbstractCegarLoop]: Abstraction has 11728 states and 14707 transitions. [2023-04-03 04:47:02,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (44), 3 states have call predecessors, (44), 2 states have call successors, (44) [2023-04-03 04:47:02,849 INFO L276 IsEmpty]: Start isEmpty. Operand 11728 states and 14707 transitions. [2023-04-03 04:47:02,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-04-03 04:47:02,868 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:47:02,868 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:47:02,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 04:47:02,868 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:47:02,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:47:02,869 INFO L85 PathProgramCache]: Analyzing trace with hash -688390002, now seen corresponding path program 1 times [2023-04-03 04:47:02,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:47:02,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621409938] [2023-04-03 04:47:02,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:47:02,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:47:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:47:03,182 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2023-04-03 04:47:03,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:47:03,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621409938] [2023-04-03 04:47:03,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621409938] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 04:47:03,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 04:47:03,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 04:47:03,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509277972] [2023-04-03 04:47:03,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 04:47:03,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 04:47:03,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 04:47:03,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 04:47:03,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-03 04:47:03,185 INFO L87 Difference]: Start difference. First operand 11728 states and 14707 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) [2023-04-03 04:47:04,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 04:47:04,207 INFO L93 Difference]: Finished difference Result 25838 states and 32547 transitions. [2023-04-03 04:47:04,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 04:47:04,208 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) Word has length 276 [2023-04-03 04:47:04,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 04:47:04,264 INFO L225 Difference]: With dead ends: 25838 [2023-04-03 04:47:04,265 INFO L226 Difference]: Without dead ends: 14154 [2023-04-03 04:47:04,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-03 04:47:04,297 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 732 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 2920 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 04:47:04,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 2920 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 04:47:04,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14154 states. [2023-04-03 04:47:04,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14154 to 14083. [2023-04-03 04:47:04,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14083 states, 8485 states have (on average 1.246081319976429) internal successors, (10573), 8836 states have internal predecessors, (10573), 3257 states have call successors, (3257), 2127 states have call predecessors, (3257), 2340 states have return successors, (3912), 3387 states have call predecessors, (3912), 3254 states have call successors, (3912) [2023-04-03 04:47:04,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14083 states to 14083 states and 17742 transitions. [2023-04-03 04:47:04,885 INFO L78 Accepts]: Start accepts. Automaton has 14083 states and 17742 transitions. Word has length 276 [2023-04-03 04:47:04,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 04:47:04,886 INFO L495 AbstractCegarLoop]: Abstraction has 14083 states and 17742 transitions. [2023-04-03 04:47:04,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) [2023-04-03 04:47:04,886 INFO L276 IsEmpty]: Start isEmpty. Operand 14083 states and 17742 transitions. [2023-04-03 04:47:04,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-04-03 04:47:04,906 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 04:47:04,906 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:47:04,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 04:47:04,906 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 04:47:04,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 04:47:04,907 INFO L85 PathProgramCache]: Analyzing trace with hash -495321546, now seen corresponding path program 1 times [2023-04-03 04:47:04,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 04:47:04,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041316201] [2023-04-03 04:47:04,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:47:04,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 04:47:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:47:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-04-03 04:47:05,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 04:47:05,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041316201] [2023-04-03 04:47:05,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041316201] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 04:47:05,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307430689] [2023-04-03 04:47:05,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 04:47:05,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 04:47:05,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 04:47:05,652 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 04:47:05,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-03 04:47:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 04:47:06,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 24 conjunts are in the unsatisfiable core [2023-04-03 04:47:06,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 04:47:06,350 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 88 proven. 14 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2023-04-03 04:47:06,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 04:47:08,249 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-04-03 04:47:08,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307430689] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-03 04:47:08,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [923360840] [2023-04-03 04:47:08,272 INFO L159 IcfgInterpreter]: Started Sifa with 192 locations of interest [2023-04-03 04:47:08,273 INFO L166 IcfgInterpreter]: Building call graph [2023-04-03 04:47:08,275 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-03 04:47:08,279 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-03 04:47:08,279 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-03 04:47:09,107 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 79 for LOIs [2023-04-03 04:47:09,459 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 94 for LOIs [2023-04-03 04:47:38,850 WARN L223 SmtUtils]: Spent 24.40s on a formula simplification. DAG size of input: 7498 DAG size of output: 346 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-03 04:48:00,409 WARN L223 SmtUtils]: Spent 21.02s on a formula simplification. DAG size of input: 7157 DAG size of output: 427 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-03 04:48:31,184 WARN L223 SmtUtils]: Spent 26.18s on a formula simplification. DAG size of input: 7660 DAG size of output: 394 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-03 04:49:02,159 WARN L223 SmtUtils]: Spent 24.94s on a formula simplification. DAG size of input: 7598 DAG size of output: 523 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-03 04:49:29,665 WARN L223 SmtUtils]: Spent 26.97s on a formula simplification. DAG size of input: 7972 DAG size of output: 593 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-03 04:49:56,736 WARN L223 SmtUtils]: Spent 27.00s on a formula simplification. DAG size of input: 7972 DAG size of output: 593 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-03 04:50:21,672 WARN L223 SmtUtils]: Spent 24.14s on a formula simplification. DAG size of input: 7498 DAG size of output: 461 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-03 04:50:45,839 WARN L223 SmtUtils]: Spent 24.09s on a formula simplification. DAG size of input: 7498 DAG size of output: 461 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-03 04:50:51,786 INFO L197 IcfgInterpreter]: Interpreting procedure ppp_sync_cleanup with input of size 67 for LOIs [2023-04-03 04:50:51,860 INFO L197 IcfgInterpreter]: Interpreting procedure tty_unregister_ldisc with input of size 70 for LOIs [2023-04-03 04:50:51,872 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_initialize_ppp_channel_ops_2 with input of size 68 for LOIs [2023-04-03 04:50:52,454 INFO L197 IcfgInterpreter]: Interpreting procedure ppp_sync_init with input of size 62 for LOIs [2023-04-03 04:50:52,533 INFO L197 IcfgInterpreter]: Interpreting procedure tty_register_ldisc with input of size 69 for LOIs [2023-04-03 04:50:52,545 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_initialize with input of size 59 for LOIs [2023-04-03 04:50:52,595 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_set_init with input of size 63 for LOIs [2023-04-03 04:50:52,607 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_target_type_1 with input of size 68 for LOIs [2023-04-03 04:50:52,673 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_check_final_state with input of size 54 for LOIs [2023-04-03 04:50:52,722 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_set_is_empty with input of size 58 for LOIs [2023-04-03 04:50:52,729 INFO L197 IcfgInterpreter]: Interpreting procedure ppp_sync_send with input of size 78 for LOIs [2023-04-03 04:50:54,792 INFO L197 IcfgInterpreter]: Interpreting procedure ppp_sync_push with input of size 74 for LOIs [2023-04-03 04:50:54,864 INFO L197 IcfgInterpreter]: Interpreting procedure spin_trylock_bh with input of size 67 for LOIs [2023-04-03 04:50:54,920 INFO L197 IcfgInterpreter]: Interpreting procedure _raw_spin_trylock_bh with input of size 67 for LOIs [2023-04-03 04:50:54,926 INFO L197 IcfgInterpreter]: Interpreting procedure ppp_sync_txmunge with input of size 72 for LOIs [2023-04-03 04:50:55,412 INFO L197 IcfgInterpreter]: Interpreting procedure get_unaligned_be16 with input of size 66 for LOIs [2023-04-03 04:50:55,463 INFO L197 IcfgInterpreter]: Interpreting procedure __be16_to_cpup with input of size 66 for LOIs [2023-04-03 04:50:55,507 INFO L197 IcfgInterpreter]: Interpreting procedure __swab16p with input of size 66 for LOIs [2023-04-03 04:50:56,555 INFO L197 IcfgInterpreter]: Interpreting procedure __fswab16 with input of size 68 for LOIs [2023-04-03 04:50:56,642 INFO L197 IcfgInterpreter]: Interpreting procedure skb_headroom with input of size 87 for LOIs [2023-04-03 04:50:56,663 INFO L197 IcfgInterpreter]: Interpreting procedure test_and_set_bit with input of size 54 for LOIs [2023-04-03 04:50:56,671 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_dev_alloc_skb_15 with input of size 84 for LOIs [2023-04-03 04:50:56,740 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_skb_alloc with input of size 75 for LOIs [2023-04-03 04:50:58,306 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_set_add with input of size 73 for LOIs [2023-04-03 04:50:58,347 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_zalloc with input of size 117 for LOIs [2023-04-03 04:51:01,756 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.meminit with input of size 145 for LOIs [2023-04-03 04:51:01,778 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 100 for LOIs [2023-04-03 04:51:01,796 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_kfree_skb_16 with input of size 72 for LOIs [2023-04-03 04:51:01,870 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_skb_free with input of size 72 for LOIs [2023-04-03 04:51:01,953 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_set_remove with input of size 76 for LOIs [2023-04-03 04:51:01,998 INFO L180 IcfgInterpreter]: Interpretation finished