/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 EqDomain -i ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:56:01,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:56:01,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:56:01,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:56:01,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:56:01,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:56:01,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:56:01,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:56:01,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:56:01,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:56:01,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:56:01,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:56:01,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:56:01,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:56:01,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:56:01,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:56:01,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:56:01,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:56:01,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:56:01,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:56:01,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:56:01,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:56:01,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:56:01,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:56:01,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:56:01,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:56:01,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:56:01,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:56:01,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:56:01,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:56:01,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:56:01,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:56:01,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:56:01,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:56:01,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:56:01,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:56:01,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:56:01,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:56:01,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:56:01,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:56:01,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:56:01,830 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 [2023-04-01 12:56:01,851 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:56:01,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:56:01,852 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:56:01,852 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:56:01,853 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:56:01,853 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:56:01,853 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:56:01,853 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:56:01,853 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:56:01,853 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:56:01,854 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:56:01,854 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:56:01,854 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:56:01,854 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:56:01,854 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:56:01,854 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:56:01,854 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:56:01,854 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:56:01,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:56:01,855 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:56:01,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:56:01,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:56:01,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:56:01,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:56:01,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:56:01,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:56:01,855 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:56:01,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:56:01,855 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:56:01,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:56:01,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:56:01,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:56:01,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:56:01,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:56:01,856 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:56:01,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:56:01,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:56:01,856 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:56:01,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:56:01,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:56:01,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:56:01,857 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:56:02,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:56:02,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:56:02,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:56:02,099 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:56:02,100 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:56:02,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i [2023-04-01 12:56:03,083 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:56:03,393 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:56:03,394 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i [2023-04-01 12:56:03,414 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01252ff75/d1037770ab704f829be68e730feaeb06/FLAGf3f46b7e1 [2023-04-01 12:56:03,429 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01252ff75/d1037770ab704f829be68e730feaeb06 [2023-04-01 12:56:03,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:56:03,432 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:56:03,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:56:03,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:56:03,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:56:03,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:56:03" (1/1) ... [2023-04-01 12:56:03,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d80eb06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:56:03, skipping insertion in model container [2023-04-01 12:56:03,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:56:03" (1/1) ... [2023-04-01 12:56:03,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:56:03,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:56:04,057 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-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i[115804,115817] [2023-04-01 12:56:04,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:56:04,130 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:56:04,249 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-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i[115804,115817] [2023-04-01 12:56:04,258 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:56:04,305 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:56:04,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:56:04 WrapperNode [2023-04-01 12:56:04,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:56:04,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:56:04,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:56:04,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:56:04,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:56:04" (1/1) ... [2023-04-01 12:56:04,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:56:04" (1/1) ... [2023-04-01 12:56:04,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:56:04" (1/1) ... [2023-04-01 12:56:04,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:56:04" (1/1) ... [2023-04-01 12:56:04,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:56:04" (1/1) ... [2023-04-01 12:56:04,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:56:04" (1/1) ... [2023-04-01 12:56:04,399 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:56:04" (1/1) ... [2023-04-01 12:56:04,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:56:04" (1/1) ... [2023-04-01 12:56:04,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:56:04,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:56:04,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:56:04,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:56:04,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:56:04" (1/1) ... [2023-04-01 12:56:04,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:56:04,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:56:04,454 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) [2023-04-01 12:56:04,465 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 [2023-04-01 12:56:04,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:56:04,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:56:04,492 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:56:04,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __le16_to_cpup [2023-04-01 12:56:04,493 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-04-01 12:56:04,493 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-04-01 12:56:04,493 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-04-01 12:56:04,493 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-04-01 12:56:04,493 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-04-01 12:56:04,493 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2023-04-01 12:56:04,493 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2023-04-01 12:56:04,493 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2023-04-01 12:56:04,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-04-01 12:56:04,494 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2023-04-01 12:56:04,494 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2023-04-01 12:56:04,494 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2023-04-01 12:56:04,494 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2023-04-01 12:56:04,494 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2023-04-01 12:56:04,494 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2023-04-01 12:56:04,494 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2023-04-01 12:56:04,494 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2023-04-01 12:56:04,494 INFO L138 BoogieDeclarations]: Found implementation of procedure kbtab_irq [2023-04-01 12:56:04,494 INFO L138 BoogieDeclarations]: Found implementation of procedure kbtab_open [2023-04-01 12:56:04,494 INFO L138 BoogieDeclarations]: Found implementation of procedure kbtab_close [2023-04-01 12:56:04,494 INFO L138 BoogieDeclarations]: Found implementation of procedure kbtab_probe [2023-04-01 12:56:04,494 INFO L138 BoogieDeclarations]: Found implementation of procedure kbtab_disconnect [2023-04-01 12:56:04,494 INFO L138 BoogieDeclarations]: Found implementation of procedure kbtab_init [2023-04-01 12:56:04,494 INFO L138 BoogieDeclarations]: Found implementation of procedure kbtab_exit [2023-04-01 12:56:04,494 INFO L138 BoogieDeclarations]: Found implementation of procedure init_module [2023-04-01 12:56:04,494 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup_module [2023-04-01 12:56:04,495 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:56:04,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2023-04-01 12:56:04,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2023-04-01 12:56:04,495 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2023-04-01 12:56:04,495 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2023-04-01 12:56:04,495 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-04-01 12:56:04,495 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-04-01 12:56:04,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-01 12:56:04,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-01 12:56:04,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-04-01 12:56:04,496 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-04-01 12:56:04,496 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-04-01 12:56:04,496 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2023-04-01 12:56:04,496 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2023-04-01 12:56:04,496 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2023-04-01 12:56:04,497 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2023-04-01 12:56:04,497 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2023-04-01 12:56:04,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-04-01 12:56:04,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-01 12:56:04,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2023-04-01 12:56:04,497 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-04-01 12:56:04,497 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2023-04-01 12:56:04,497 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2023-04-01 12:56:04,497 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-04-01 12:56:04,498 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2023-04-01 12:56:04,498 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-04-01 12:56:04,498 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-04-01 12:56:04,498 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:56:04,498 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:56:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 12:56:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 12:56:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:56:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:56:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure __le16_to_cpup [2023-04-01 12:56:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:56:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-04-01 12:56:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2023-04-01 12:56:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2023-04-01 12:56:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-04-01 12:56:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-04-01 12:56:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-04-01 12:56:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-04-01 12:56:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-04-01 12:56:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure init_module [2023-04-01 12:56:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup_module [2023-04-01 12:56:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-04-01 12:56:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-04-01 12:56:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-04-01 12:56:04,501 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-04-01 12:56:04,501 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-04-01 12:56:04,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 12:56:04,501 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2023-04-01 12:56:04,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:56:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2023-04-01 12:56:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2023-04-01 12:56:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2023-04-01 12:56:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2023-04-01 12:56:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 12:56:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-04-01 12:56:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-04-01 12:56:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-04-01 12:56:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-04-01 12:56:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2023-04-01 12:56:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2023-04-01 12:56:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-04-01 12:56:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2023-04-01 12:56:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2023-04-01 12:56:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2023-04-01 12:56:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2023-04-01 12:56:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2023-04-01 12:56:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2023-04-01 12:56:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2023-04-01 12:56:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2023-04-01 12:56:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2023-04-01 12:56:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2023-04-01 12:56:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2023-04-01 12:56:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2023-04-01 12:56:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2023-04-01 12:56:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure kbtab_irq [2023-04-01 12:56:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure kbtab_open [2023-04-01 12:56:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure kbtab_close [2023-04-01 12:56:04,504 INFO L130 BoogieDeclarations]: Found specification of procedure kbtab_probe [2023-04-01 12:56:04,504 INFO L130 BoogieDeclarations]: Found specification of procedure kbtab_disconnect [2023-04-01 12:56:04,504 INFO L130 BoogieDeclarations]: Found specification of procedure kbtab_init [2023-04-01 12:56:04,504 INFO L130 BoogieDeclarations]: Found specification of procedure kbtab_exit [2023-04-01 12:56:04,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-01 12:56:04,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-04-01 12:56:04,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-01 12:56:04,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 12:56:04,505 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:56:04,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2023-04-01 12:56:04,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2023-04-01 12:56:04,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2023-04-01 12:56:04,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 12:56:04,510 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 12:56:04,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-01 12:56:04,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 12:56:04,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2023-04-01 12:56:04,511 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 12:56:04,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:56:04,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:56:04,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:56:04,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-01 12:56:04,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:56:04,760 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:56:04,764 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:56:04,834 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-04-01 12:56:04,873 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2023-04-01 12:56:04,873 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2023-04-01 12:56:05,134 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-04-01 12:56:05,183 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2023-04-01 12:56:05,183 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2023-04-01 12:56:05,308 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2023-04-01 12:56:05,580 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:56:05,750 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:56:05,750 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-04-01 12:56:05,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:56:05 BoogieIcfgContainer [2023-04-01 12:56:05,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:56:05,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:56:05,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:56:05,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:56:05,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:56:03" (1/3) ... [2023-04-01 12:56:05,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3b23c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:56:05, skipping insertion in model container [2023-04-01 12:56:05,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:56:04" (2/3) ... [2023-04-01 12:56:05,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3b23c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:56:05, skipping insertion in model container [2023-04-01 12:56:05,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:56:05" (3/3) ... [2023-04-01 12:56:05,759 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i [2023-04-01 12:56:05,770 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:56:05,770 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:56:05,810 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:56:05,815 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;@183c9326, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:56:05,815 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:56:05,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 241 states, 132 states have (on average 1.2272727272727273) internal successors, (162), 140 states have internal predecessors, (162), 59 states have call successors, (59), 43 states have call predecessors, (59), 42 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-04-01 12:56:05,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-04-01 12:56:05,825 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:05,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:56:05,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:05,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:05,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1550356853, now seen corresponding path program 1 times [2023-04-01 12:56:05,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:05,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086866930] [2023-04-01 12:56:05,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:05,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:56:06,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:06,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086866930] [2023-04-01 12:56:06,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086866930] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:56:06,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:56:06,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:56:06,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538894610] [2023-04-01 12:56:06,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:56:06,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:56:06,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:56:06,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:56:06,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:56:06,325 INFO L87 Difference]: Start difference. First operand has 241 states, 132 states have (on average 1.2272727272727273) internal successors, (162), 140 states have internal predecessors, (162), 59 states have call successors, (59), 43 states have call predecessors, (59), 42 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-01 12:56:06,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:56:06,916 INFO L93 Difference]: Finished difference Result 536 states and 665 transitions. [2023-04-01 12:56:06,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:56:06,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 27 [2023-04-01 12:56:06,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:56:06,931 INFO L225 Difference]: With dead ends: 536 [2023-04-01 12:56:06,931 INFO L226 Difference]: Without dead ends: 334 [2023-04-01 12:56:06,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:56:06,942 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 176 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 12:56:06,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 383 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 12:56:06,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2023-04-01 12:56:06,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 329. [2023-04-01 12:56:06,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 186 states have (on average 1.1774193548387097) internal successors, (219), 191 states have internal predecessors, (219), 83 states have call successors, (83), 64 states have call predecessors, (83), 59 states have return successors, (77), 74 states have call predecessors, (77), 76 states have call successors, (77) [2023-04-01 12:56:07,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 379 transitions. [2023-04-01 12:56:07,001 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 379 transitions. Word has length 27 [2023-04-01 12:56:07,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:56:07,004 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 379 transitions. [2023-04-01 12:56:07,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-01 12:56:07,004 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 379 transitions. [2023-04-01 12:56:07,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-04-01 12:56:07,005 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:07,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:56:07,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:56:07,005 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:07,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:07,006 INFO L85 PathProgramCache]: Analyzing trace with hash 816221699, now seen corresponding path program 1 times [2023-04-01 12:56:07,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:07,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285171179] [2023-04-01 12:56:07,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:07,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:07,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:56:07,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:07,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285171179] [2023-04-01 12:56:07,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285171179] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:56:07,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:56:07,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:56:07,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76155014] [2023-04-01 12:56:07,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:56:07,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:56:07,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:56:07,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:56:07,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:56:07,195 INFO L87 Difference]: Start difference. First operand 329 states and 379 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-01 12:56:07,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:56:07,638 INFO L93 Difference]: Finished difference Result 749 states and 867 transitions. [2023-04-01 12:56:07,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:56:07,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 28 [2023-04-01 12:56:07,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:56:07,644 INFO L225 Difference]: With dead ends: 749 [2023-04-01 12:56:07,644 INFO L226 Difference]: Without dead ends: 438 [2023-04-01 12:56:07,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:56:07,645 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 148 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 12:56:07,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 372 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 12:56:07,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-04-01 12:56:07,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 432. [2023-04-01 12:56:07,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 246 states have (on average 1.1666666666666667) internal successors, (287), 251 states have internal predecessors, (287), 107 states have call successors, (107), 84 states have call predecessors, (107), 78 states have return successors, (103), 96 states have call predecessors, (103), 100 states have call successors, (103) [2023-04-01 12:56:07,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 497 transitions. [2023-04-01 12:56:07,693 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 497 transitions. Word has length 28 [2023-04-01 12:56:07,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:56:07,694 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 497 transitions. [2023-04-01 12:56:07,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-01 12:56:07,694 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 497 transitions. [2023-04-01 12:56:07,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-01 12:56:07,701 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:07,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:56:07,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:56:07,702 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:07,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:07,702 INFO L85 PathProgramCache]: Analyzing trace with hash -651169423, now seen corresponding path program 1 times [2023-04-01 12:56:07,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:07,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246129991] [2023-04-01 12:56:07,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:07,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:07,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:56:07,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:07,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246129991] [2023-04-01 12:56:07,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246129991] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:56:07,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:56:07,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:56:07,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527134869] [2023-04-01 12:56:07,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:56:07,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:56:07,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:56:07,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:56:07,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:56:07,883 INFO L87 Difference]: Start difference. First operand 432 states and 497 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-01 12:56:08,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:56:08,644 INFO L93 Difference]: Finished difference Result 913 states and 1088 transitions. [2023-04-01 12:56:08,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 12:56:08,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 63 [2023-04-01 12:56:08,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:56:08,647 INFO L225 Difference]: With dead ends: 913 [2023-04-01 12:56:08,647 INFO L226 Difference]: Without dead ends: 506 [2023-04-01 12:56:08,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:56:08,649 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 31 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 12:56:08,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 765 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 12:56:08,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2023-04-01 12:56:08,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 479. [2023-04-01 12:56:08,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 293 states have (on average 1.2150170648464165) internal successors, (356), 298 states have internal predecessors, (356), 107 states have call successors, (107), 84 states have call predecessors, (107), 78 states have return successors, (103), 96 states have call predecessors, (103), 100 states have call successors, (103) [2023-04-01 12:56:08,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 566 transitions. [2023-04-01 12:56:08,670 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 566 transitions. Word has length 63 [2023-04-01 12:56:08,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:56:08,670 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 566 transitions. [2023-04-01 12:56:08,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-01 12:56:08,671 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 566 transitions. [2023-04-01 12:56:08,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-04-01 12:56:08,673 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:08,673 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-04-01 12:56:08,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:56:08,673 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:08,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:08,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1194329649, now seen corresponding path program 1 times [2023-04-01 12:56:08,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:08,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423854883] [2023-04-01 12:56:08,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:08,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:09,419 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-01 12:56:09,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:09,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423854883] [2023-04-01 12:56:09,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423854883] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:56:09,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:56:09,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:56:09,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236522098] [2023-04-01 12:56:09,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:56:09,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:56:09,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:56:09,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:56:09,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:56:09,421 INFO L87 Difference]: Start difference. First operand 479 states and 566 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2023-04-01 12:56:10,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:56:10,427 INFO L93 Difference]: Finished difference Result 842 states and 997 transitions. [2023-04-01 12:56:10,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 12:56:10,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 110 [2023-04-01 12:56:10,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:56:10,430 INFO L225 Difference]: With dead ends: 842 [2023-04-01 12:56:10,430 INFO L226 Difference]: Without dead ends: 498 [2023-04-01 12:56:10,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-04-01 12:56:10,432 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 516 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:56:10,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 302 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 12:56:10,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2023-04-01 12:56:10,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 367. [2023-04-01 12:56:10,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 219 states have (on average 1.1963470319634704) internal successors, (262), 225 states have internal predecessors, (262), 85 states have call successors, (85), 65 states have call predecessors, (85), 62 states have return successors, (81), 76 states have call predecessors, (81), 79 states have call successors, (81) [2023-04-01 12:56:10,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 428 transitions. [2023-04-01 12:56:10,454 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 428 transitions. Word has length 110 [2023-04-01 12:56:10,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:56:10,454 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 428 transitions. [2023-04-01 12:56:10,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2023-04-01 12:56:10,455 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 428 transitions. [2023-04-01 12:56:10,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-01 12:56:10,456 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:10,456 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-04-01 12:56:10,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:56:10,456 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:10,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:10,457 INFO L85 PathProgramCache]: Analyzing trace with hash 38172132, now seen corresponding path program 1 times [2023-04-01 12:56:10,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:10,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116124797] [2023-04-01 12:56:10,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:10,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:11,294 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-04-01 12:56:11,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:11,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116124797] [2023-04-01 12:56:11,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116124797] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:56:11,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:56:11,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 12:56:11,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378786055] [2023-04-01 12:56:11,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:56:11,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 12:56:11,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:56:11,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 12:56:11,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 12:56:11,297 INFO L87 Difference]: Start difference. First operand 367 states and 428 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 5 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-04-01 12:56:13,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:56:13,051 INFO L93 Difference]: Finished difference Result 727 states and 859 transitions. [2023-04-01 12:56:13,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 12:56:13,051 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 5 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 108 [2023-04-01 12:56:13,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:56:13,055 INFO L225 Difference]: With dead ends: 727 [2023-04-01 12:56:13,055 INFO L226 Difference]: Without dead ends: 724 [2023-04-01 12:56:13,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-04-01 12:56:13,056 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 768 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-01 12:56:13,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 603 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-01 12:56:13,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2023-04-01 12:56:13,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 688. [2023-04-01 12:56:13,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 416 states have (on average 1.1995192307692308) internal successors, (499), 425 states have internal predecessors, (499), 155 states have call successors, (155), 117 states have call predecessors, (155), 116 states have return successors, (162), 145 states have call predecessors, (162), 149 states have call successors, (162) [2023-04-01 12:56:13,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 816 transitions. [2023-04-01 12:56:13,085 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 816 transitions. Word has length 108 [2023-04-01 12:56:13,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:56:13,085 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 816 transitions. [2023-04-01 12:56:13,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 5 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-04-01 12:56:13,085 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 816 transitions. [2023-04-01 12:56:13,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-04-01 12:56:13,087 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:13,087 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-04-01 12:56:13,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:56:13,087 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:13,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:13,087 INFO L85 PathProgramCache]: Analyzing trace with hash 445691956, now seen corresponding path program 1 times [2023-04-01 12:56:13,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:13,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986700834] [2023-04-01 12:56:13,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:13,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:13,244 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-01 12:56:13,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:13,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986700834] [2023-04-01 12:56:13,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986700834] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:56:13,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:56:13,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 12:56:13,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525750994] [2023-04-01 12:56:13,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:56:13,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 12:56:13,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:56:13,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 12:56:13,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 12:56:13,246 INFO L87 Difference]: Start difference. First operand 688 states and 816 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 4 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2023-04-01 12:56:14,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:56:14,342 INFO L93 Difference]: Finished difference Result 1203 states and 1434 transitions. [2023-04-01 12:56:14,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 12:56:14,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 4 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) Word has length 124 [2023-04-01 12:56:14,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:56:14,345 INFO L225 Difference]: With dead ends: 1203 [2023-04-01 12:56:14,345 INFO L226 Difference]: Without dead ends: 514 [2023-04-01 12:56:14,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:56:14,347 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 36 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:56:14,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 943 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-01 12:56:14,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2023-04-01 12:56:14,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 496. [2023-04-01 12:56:14,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 292 states have (on average 1.1815068493150684) internal successors, (345), 300 states have internal predecessors, (345), 120 states have call successors, (120), 82 states have call predecessors, (120), 83 states have return successors, (130), 113 states have call predecessors, (130), 114 states have call successors, (130) [2023-04-01 12:56:14,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 595 transitions. [2023-04-01 12:56:14,383 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 595 transitions. Word has length 124 [2023-04-01 12:56:14,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:56:14,384 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 595 transitions. [2023-04-01 12:56:14,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 4 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2023-04-01 12:56:14,384 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 595 transitions. [2023-04-01 12:56:14,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-04-01 12:56:14,386 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:14,386 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-04-01 12:56:14,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 12:56:14,387 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:14,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:14,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1663670988, now seen corresponding path program 1 times [2023-04-01 12:56:14,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:14,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119089896] [2023-04-01 12:56:14,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:14,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-04-01 12:56:14,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:14,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119089896] [2023-04-01 12:56:14,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119089896] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:56:14,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:56:14,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:56:14,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338633525] [2023-04-01 12:56:14,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:56:14,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:56:14,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:56:14,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:56:14,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:56:14,632 INFO L87 Difference]: Start difference. First operand 496 states and 595 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-04-01 12:56:15,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:56:15,002 INFO L93 Difference]: Finished difference Result 882 states and 1071 transitions. [2023-04-01 12:56:15,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:56:15,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 132 [2023-04-01 12:56:15,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:56:15,005 INFO L225 Difference]: With dead ends: 882 [2023-04-01 12:56:15,005 INFO L226 Difference]: Without dead ends: 470 [2023-04-01 12:56:15,007 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 [2023-04-01 12:56:15,009 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 5 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:56:15,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 388 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:56:15,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2023-04-01 12:56:15,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2023-04-01 12:56:15,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 275 states have (on average 1.1745454545454546) internal successors, (323), 283 states have internal predecessors, (323), 115 states have call successors, (115), 82 states have call predecessors, (115), 79 states have return successors, (116), 104 states have call predecessors, (116), 109 states have call successors, (116) [2023-04-01 12:56:15,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 554 transitions. [2023-04-01 12:56:15,033 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 554 transitions. Word has length 132 [2023-04-01 12:56:15,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:56:15,035 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 554 transitions. [2023-04-01 12:56:15,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-04-01 12:56:15,035 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 554 transitions. [2023-04-01 12:56:15,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-01 12:56:15,038 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:15,038 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-04-01 12:56:15,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 12:56:15,039 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:15,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:15,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1933947729, now seen corresponding path program 1 times [2023-04-01 12:56:15,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:15,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27798147] [2023-04-01 12:56:15,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:15,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:15,804 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-04-01 12:56:15,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:15,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27798147] [2023-04-01 12:56:15,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27798147] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:56:15,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:56:15,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:56:15,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265674744] [2023-04-01 12:56:15,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:56:15,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:56:15,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:56:15,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:56:15,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:56:15,805 INFO L87 Difference]: Start difference. First operand 470 states and 554 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2023-04-01 12:56:16,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:56:16,513 INFO L93 Difference]: Finished difference Result 505 states and 594 transitions. [2023-04-01 12:56:16,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 12:56:16,513 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) Word has length 134 [2023-04-01 12:56:16,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:56:16,515 INFO L225 Difference]: With dead ends: 505 [2023-04-01 12:56:16,516 INFO L226 Difference]: Without dead ends: 502 [2023-04-01 12:56:16,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-04-01 12:56:16,517 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 282 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 12:56:16,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 286 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 12:56:16,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2023-04-01 12:56:16,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 483. [2023-04-01 12:56:16,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 281 states have (on average 1.1708185053380782) internal successors, (329), 288 states have internal predecessors, (329), 119 states have call successors, (119), 86 states have call predecessors, (119), 82 states have return successors, (119), 108 states have call predecessors, (119), 112 states have call successors, (119) [2023-04-01 12:56:16,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 567 transitions. [2023-04-01 12:56:16,542 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 567 transitions. Word has length 134 [2023-04-01 12:56:16,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:56:16,543 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 567 transitions. [2023-04-01 12:56:16,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2023-04-01 12:56:16,543 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 567 transitions. [2023-04-01 12:56:16,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-01 12:56:16,544 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:16,544 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-04-01 12:56:16,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 12:56:16,544 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:16,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:16,545 INFO L85 PathProgramCache]: Analyzing trace with hash -177363033, now seen corresponding path program 1 times [2023-04-01 12:56:16,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:16,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301417080] [2023-04-01 12:56:16,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:16,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:16,863 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-04-01 12:56:16,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:16,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301417080] [2023-04-01 12:56:16,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301417080] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:56:16,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:56:16,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 12:56:16,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820143990] [2023-04-01 12:56:16,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:56:16,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 12:56:16,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:56:16,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 12:56:16,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 12:56:16,865 INFO L87 Difference]: Start difference. First operand 483 states and 567 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2023-04-01 12:56:17,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:56:17,909 INFO L93 Difference]: Finished difference Result 943 states and 1110 transitions. [2023-04-01 12:56:17,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 12:56:17,910 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 135 [2023-04-01 12:56:17,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:56:17,911 INFO L225 Difference]: With dead ends: 943 [2023-04-01 12:56:17,912 INFO L226 Difference]: Without dead ends: 483 [2023-04-01 12:56:17,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:56:17,913 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 1 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:56:17,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 978 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 12:56:17,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2023-04-01 12:56:17,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2023-04-01 12:56:17,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 281 states have (on average 1.1672597864768683) internal successors, (328), 288 states have internal predecessors, (328), 119 states have call successors, (119), 86 states have call predecessors, (119), 82 states have return successors, (119), 108 states have call predecessors, (119), 112 states have call successors, (119) [2023-04-01 12:56:17,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 566 transitions. [2023-04-01 12:56:17,948 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 566 transitions. Word has length 135 [2023-04-01 12:56:17,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:56:17,948 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 566 transitions. [2023-04-01 12:56:17,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2023-04-01 12:56:17,948 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 566 transitions. [2023-04-01 12:56:17,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-04-01 12:56:17,949 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:17,949 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-04-01 12:56:17,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 12:56:17,949 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:17,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:17,950 INFO L85 PathProgramCache]: Analyzing trace with hash 881289550, now seen corresponding path program 1 times [2023-04-01 12:56:17,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:17,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534735411] [2023-04-01 12:56:17,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:17,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:18,498 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-04-01 12:56:18,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:18,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534735411] [2023-04-01 12:56:18,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534735411] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:56:18,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:56:18,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 12:56:18,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869115131] [2023-04-01 12:56:18,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:56:18,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 12:56:18,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:56:18,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 12:56:18,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-04-01 12:56:18,500 INFO L87 Difference]: Start difference. First operand 483 states and 566 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 6 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2023-04-01 12:56:19,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:56:19,487 INFO L93 Difference]: Finished difference Result 1019 states and 1242 transitions. [2023-04-01 12:56:19,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 12:56:19,487 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 6 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) Word has length 139 [2023-04-01 12:56:19,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:56:19,491 INFO L225 Difference]: With dead ends: 1019 [2023-04-01 12:56:19,491 INFO L226 Difference]: Without dead ends: 791 [2023-04-01 12:56:19,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2023-04-01 12:56:19,492 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 383 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 12:56:19,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 382 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 12:56:19,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2023-04-01 12:56:19,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 727. [2023-04-01 12:56:19,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 438 states have (on average 1.2191780821917808) internal successors, (534), 449 states have internal predecessors, (534), 170 states have call successors, (170), 125 states have call predecessors, (170), 118 states have return successors, (177), 152 states have call predecessors, (177), 161 states have call successors, (177) [2023-04-01 12:56:19,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 881 transitions. [2023-04-01 12:56:19,529 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 881 transitions. Word has length 139 [2023-04-01 12:56:19,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:56:19,529 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 881 transitions. [2023-04-01 12:56:19,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 6 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2023-04-01 12:56:19,530 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 881 transitions. [2023-04-01 12:56:19,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-01 12:56:19,530 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:19,530 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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] [2023-04-01 12:56:19,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 12:56:19,531 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:19,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:19,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1546270733, now seen corresponding path program 1 times [2023-04-01 12:56:19,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:19,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926491435] [2023-04-01 12:56:19,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:19,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:20,744 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-04-01 12:56:20,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:20,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926491435] [2023-04-01 12:56:20,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926491435] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:56:20,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:56:20,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 12:56:20,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553910986] [2023-04-01 12:56:20,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:56:20,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 12:56:20,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:56:20,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 12:56:20,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 12:56:20,747 INFO L87 Difference]: Start difference. First operand 727 states and 881 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 5 states have call successors, (33), 5 states have call predecessors, (33), 3 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2023-04-01 12:56:22,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:56:22,751 INFO L93 Difference]: Finished difference Result 1232 states and 1511 transitions. [2023-04-01 12:56:22,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 12:56:22,752 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 5 states have call successors, (33), 5 states have call predecessors, (33), 3 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) Word has length 155 [2023-04-01 12:56:22,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:56:22,757 INFO L225 Difference]: With dead ends: 1232 [2023-04-01 12:56:22,757 INFO L226 Difference]: Without dead ends: 1225 [2023-04-01 12:56:22,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-04-01 12:56:22,758 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 339 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-01 12:56:22,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 658 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-01 12:56:22,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2023-04-01 12:56:22,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1176. [2023-04-01 12:56:22,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 715 states have (on average 1.220979020979021) internal successors, (873), 735 states have internal predecessors, (873), 268 states have call successors, (268), 193 states have call predecessors, (268), 192 states have return successors, (306), 247 states have call predecessors, (306), 258 states have call successors, (306) [2023-04-01 12:56:22,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1447 transitions. [2023-04-01 12:56:22,818 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1447 transitions. Word has length 155 [2023-04-01 12:56:22,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:56:22,818 INFO L495 AbstractCegarLoop]: Abstraction has 1176 states and 1447 transitions. [2023-04-01 12:56:22,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 5 states have call successors, (33), 5 states have call predecessors, (33), 3 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2023-04-01 12:56:22,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1447 transitions. [2023-04-01 12:56:22,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-04-01 12:56:22,819 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:22,820 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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] [2023-04-01 12:56:22,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-01 12:56:22,820 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:22,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:22,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1621120477, now seen corresponding path program 1 times [2023-04-01 12:56:22,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:22,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552804220] [2023-04-01 12:56:22,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:22,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:23,068 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-04-01 12:56:23,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:23,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552804220] [2023-04-01 12:56:23,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552804220] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:56:23,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:56:23,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:56:23,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837231832] [2023-04-01 12:56:23,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:56:23,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:56:23,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:56:23,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:56:23,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:56:23,070 INFO L87 Difference]: Start difference. First operand 1176 states and 1447 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2023-04-01 12:56:23,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:56:23,824 INFO L93 Difference]: Finished difference Result 1228 states and 1501 transitions. [2023-04-01 12:56:23,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:56:23,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) Word has length 172 [2023-04-01 12:56:23,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:56:23,830 INFO L225 Difference]: With dead ends: 1228 [2023-04-01 12:56:23,830 INFO L226 Difference]: Without dead ends: 1207 [2023-04-01 12:56:23,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:56:23,831 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 228 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 12:56:23,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 648 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 12:56:23,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2023-04-01 12:56:23,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1186. [2023-04-01 12:56:23,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 721 states have (on average 1.2135922330097086) internal successors, (875), 739 states have internal predecessors, (875), 270 states have call successors, (270), 195 states have call predecessors, (270), 194 states have return successors, (308), 251 states have call predecessors, (308), 260 states have call successors, (308) [2023-04-01 12:56:23,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1453 transitions. [2023-04-01 12:56:23,917 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1453 transitions. Word has length 172 [2023-04-01 12:56:23,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:56:23,917 INFO L495 AbstractCegarLoop]: Abstraction has 1186 states and 1453 transitions. [2023-04-01 12:56:23,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2023-04-01 12:56:23,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1453 transitions. [2023-04-01 12:56:23,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-04-01 12:56:23,919 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:23,919 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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] [2023-04-01 12:56:23,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-01 12:56:23,919 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:23,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:23,919 INFO L85 PathProgramCache]: Analyzing trace with hash 57626170, now seen corresponding path program 1 times [2023-04-01 12:56:23,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:23,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175471869] [2023-04-01 12:56:23,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:23,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:23,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-04-01 12:56:24,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:24,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175471869] [2023-04-01 12:56:24,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175471869] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:56:24,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175212684] [2023-04-01 12:56:24,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:24,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:56:24,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:56:24,130 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) [2023-04-01 12:56:24,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 12:56:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:24,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 2143 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 12:56:24,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:56:24,738 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-04-01 12:56:24,738 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 12:56:24,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175212684] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:56:24,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 12:56:24,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-04-01 12:56:24,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074328286] [2023-04-01 12:56:24,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:56:24,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 12:56:24,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:56:24,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 12:56:24,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:56:24,739 INFO L87 Difference]: Start difference. First operand 1186 states and 1453 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2023-04-01 12:56:25,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:56:25,355 INFO L93 Difference]: Finished difference Result 1992 states and 2417 transitions. [2023-04-01 12:56:25,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 12:56:25,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 175 [2023-04-01 12:56:25,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:56:25,359 INFO L225 Difference]: With dead ends: 1992 [2023-04-01 12:56:25,359 INFO L226 Difference]: Without dead ends: 851 [2023-04-01 12:56:25,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:56:25,362 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 17 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 12:56:25,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 553 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 12:56:25,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2023-04-01 12:56:25,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 835. [2023-04-01 12:56:25,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 495 states have (on average 1.121212121212121) internal successors, (555), 505 states have internal predecessors, (555), 192 states have call successors, (192), 148 states have call predecessors, (192), 147 states have return successors, (202), 181 states have call predecessors, (202), 182 states have call successors, (202) [2023-04-01 12:56:25,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 949 transitions. [2023-04-01 12:56:25,423 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 949 transitions. Word has length 175 [2023-04-01 12:56:25,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:56:25,423 INFO L495 AbstractCegarLoop]: Abstraction has 835 states and 949 transitions. [2023-04-01 12:56:25,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2023-04-01 12:56:25,424 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 949 transitions. [2023-04-01 12:56:25,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-04-01 12:56:25,425 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:25,425 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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] [2023-04-01 12:56:25,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 12:56:25,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 12:56:25,637 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:25,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:25,637 INFO L85 PathProgramCache]: Analyzing trace with hash -581780271, now seen corresponding path program 1 times [2023-04-01 12:56:25,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:25,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510736116] [2023-04-01 12:56:25,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:25,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:25,954 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-04-01 12:56:25,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:25,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510736116] [2023-04-01 12:56:25,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510736116] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:56:25,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:56:25,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:56:25,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586671515] [2023-04-01 12:56:25,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:56:25,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:56:25,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:56:25,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:56:25,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:56:25,956 INFO L87 Difference]: Start difference. First operand 835 states and 949 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, (40), 2 states have call predecessors, (40), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-04-01 12:56:26,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:56:26,353 INFO L93 Difference]: Finished difference Result 1113 states and 1268 transitions. [2023-04-01 12:56:26,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:56:26,354 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, (40), 2 states have call predecessors, (40), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 190 [2023-04-01 12:56:26,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:56:26,356 INFO L225 Difference]: With dead ends: 1113 [2023-04-01 12:56:26,356 INFO L226 Difference]: Without dead ends: 517 [2023-04-01 12:56:26,357 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 [2023-04-01 12:56:26,358 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 5 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 12:56:26,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 384 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 12:56:26,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2023-04-01 12:56:26,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 517. [2023-04-01 12:56:26,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 304 states have (on average 1.105263157894737) internal successors, (336), 309 states have internal predecessors, (336), 122 states have call successors, (122), 96 states have call predecessors, (122), 90 states have return successors, (116), 111 states have call predecessors, (116), 113 states have call successors, (116) [2023-04-01 12:56:26,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 574 transitions. [2023-04-01 12:56:26,391 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 574 transitions. Word has length 190 [2023-04-01 12:56:26,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:56:26,391 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 574 transitions. [2023-04-01 12:56:26,391 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, (40), 2 states have call predecessors, (40), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-04-01 12:56:26,391 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 574 transitions. [2023-04-01 12:56:26,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-04-01 12:56:26,392 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:26,392 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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] [2023-04-01 12:56:26,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-01 12:56:26,393 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:26,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:26,393 INFO L85 PathProgramCache]: Analyzing trace with hash 84035436, now seen corresponding path program 1 times [2023-04-01 12:56:26,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:26,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904710916] [2023-04-01 12:56:26,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:26,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:27,644 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-04-01 12:56:27,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:27,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904710916] [2023-04-01 12:56:27,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904710916] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:56:27,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:56:27,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 12:56:27,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523497060] [2023-04-01 12:56:27,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:56:27,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 12:56:27,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:56:27,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 12:56:27,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-04-01 12:56:27,648 INFO L87 Difference]: Start difference. First operand 517 states and 574 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 6 states have call successors, (40), 4 states have call predecessors, (40), 5 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37) [2023-04-01 12:56:28,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:56:28,841 INFO L93 Difference]: Finished difference Result 562 states and 615 transitions. [2023-04-01 12:56:28,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 12:56:28,841 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 6 states have call successors, (40), 4 states have call predecessors, (40), 5 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37) Word has length 192 [2023-04-01 12:56:28,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:56:28,843 INFO L225 Difference]: With dead ends: 562 [2023-04-01 12:56:28,843 INFO L226 Difference]: Without dead ends: 540 [2023-04-01 12:56:28,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2023-04-01 12:56:28,844 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 375 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:56:28,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 317 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-01 12:56:28,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2023-04-01 12:56:28,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 509. [2023-04-01 12:56:28,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 301 states have (on average 1.1029900332225913) internal successors, (332), 306 states have internal predecessors, (332), 118 states have call successors, (118), 94 states have call predecessors, (118), 89 states have return successors, (113), 108 states have call predecessors, (113), 110 states have call successors, (113) [2023-04-01 12:56:28,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 563 transitions. [2023-04-01 12:56:28,871 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 563 transitions. Word has length 192 [2023-04-01 12:56:28,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:56:28,871 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 563 transitions. [2023-04-01 12:56:28,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 6 states have call successors, (40), 4 states have call predecessors, (40), 5 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37) [2023-04-01 12:56:28,871 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 563 transitions. [2023-04-01 12:56:28,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-04-01 12:56:28,872 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:28,873 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 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] [2023-04-01 12:56:28,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-01 12:56:28,873 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:28,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:28,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1525351524, now seen corresponding path program 1 times [2023-04-01 12:56:28,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:28,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065646292] [2023-04-01 12:56:28,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:28,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:29,651 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-04-01 12:56:29,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:29,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065646292] [2023-04-01 12:56:29,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065646292] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:56:29,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:56:29,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 12:56:29,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22237798] [2023-04-01 12:56:29,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:56:29,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 12:56:29,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:56:29,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 12:56:29,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 12:56:29,654 INFO L87 Difference]: Start difference. First operand 509 states and 563 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 4 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (41), 5 states have call predecessors, (41), 4 states have call successors, (41) [2023-04-01 12:56:30,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:56:30,463 INFO L93 Difference]: Finished difference Result 751 states and 832 transitions. [2023-04-01 12:56:30,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 12:56:30,473 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 4 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (41), 5 states have call predecessors, (41), 4 states have call successors, (41) Word has length 222 [2023-04-01 12:56:30,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:56:30,475 INFO L225 Difference]: With dead ends: 751 [2023-04-01 12:56:30,475 INFO L226 Difference]: Without dead ends: 432 [2023-04-01 12:56:30,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:56:30,476 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 37 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:56:30,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 969 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:56:30,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-04-01 12:56:30,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 409. [2023-04-01 12:56:30,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 238 states have (on average 1.0924369747899159) internal successors, (260), 242 states have internal predecessors, (260), 96 states have call successors, (96), 77 states have call predecessors, (96), 74 states have return successors, (91), 89 states have call predecessors, (91), 90 states have call successors, (91) [2023-04-01 12:56:30,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 447 transitions. [2023-04-01 12:56:30,499 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 447 transitions. Word has length 222 [2023-04-01 12:56:30,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:56:30,500 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 447 transitions. [2023-04-01 12:56:30,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 4 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (41), 5 states have call predecessors, (41), 4 states have call successors, (41) [2023-04-01 12:56:30,500 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 447 transitions. [2023-04-01 12:56:30,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-04-01 12:56:30,501 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:30,501 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 2, 2, 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] [2023-04-01 12:56:30,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-01 12:56:30,502 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:30,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:30,502 INFO L85 PathProgramCache]: Analyzing trace with hash 70981253, now seen corresponding path program 1 times [2023-04-01 12:56:30,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:30,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932738666] [2023-04-01 12:56:30,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:30,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:31,645 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-04-01 12:56:31,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:31,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932738666] [2023-04-01 12:56:31,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932738666] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:56:31,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846356950] [2023-04-01 12:56:31,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:31,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:56:31,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:56:31,647 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 12:56:31,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 12:56:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:32,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 2391 conjuncts, 44 conjunts are in the unsatisfiable core [2023-04-01 12:56:32,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:56:32,759 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-04-01 12:56:32,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:56:35,651 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-04-01 12:56:35,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846356950] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:56:35,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [62471877] [2023-04-01 12:56:35,696 INFO L159 IcfgInterpreter]: Started Sifa with 193 locations of interest [2023-04-01 12:56:35,696 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:56:35,700 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:56:35,703 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:56:35,704 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:56:45,608 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 94 for LOIs [2023-04-01 12:56:45,940 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 567 for LOIs