/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 22:29:19,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 22:29:19,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 22:29:19,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 22:29:19,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 22:29:19,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 22:29:19,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 22:29:19,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 22:29:19,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 22:29:19,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 22:29:19,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 22:29:19,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 22:29:19,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 22:29:19,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 22:29:19,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 22:29:19,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 22:29:19,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 22:29:19,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 22:29:19,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 22:29:19,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 22:29:19,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 22:29:19,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 22:29:19,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 22:29:19,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 22:29:19,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 22:29:19,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 22:29:19,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 22:29:19,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 22:29:19,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 22:29:19,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 22:29:19,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 22:29:19,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 22:29:19,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 22:29:19,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 22:29:19,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 22:29:19,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 22:29:19,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 22:29:19,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 22:29:19,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 22:29:19,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 22:29:19,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 22:29:19,427 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-27 22:29:19,473 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 22:29:19,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 22:29:19,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 22:29:19,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 22:29:19,475 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 22:29:19,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 22:29:19,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 22:29:19,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 22:29:19,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 22:29:19,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 22:29:19,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 22:29:19,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 22:29:19,477 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 22:29:19,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 22:29:19,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 22:29:19,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 22:29:19,478 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 22:29:19,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 22:29:19,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 22:29:19,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 22:29:19,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 22:29:19,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 22:29:19,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 22:29:19,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 22:29:19,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 22:29:19,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 22:29:19,480 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-27 22:29:19,480 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-27 22:29:19,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 22:29:20,007 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 22:29:20,012 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 22:29:20,013 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 22:29:20,014 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 22:29:20,015 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2020-08-27 22:29:20,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/851c0e472/ce3b68c6b94a4ebf803063f2a5f220bc/FLAG3eca73edb [2020-08-27 22:29:20,930 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 22:29:20,934 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2020-08-27 22:29:20,983 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/851c0e472/ce3b68c6b94a4ebf803063f2a5f220bc/FLAG3eca73edb [2020-08-27 22:29:21,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/851c0e472/ce3b68c6b94a4ebf803063f2a5f220bc [2020-08-27 22:29:21,500 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 22:29:21,503 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 22:29:21,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 22:29:21,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 22:29:21,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 22:29:21,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:29:21" (1/1) ... [2020-08-27 22:29:21,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2658ecdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:29:21, skipping insertion in model container [2020-08-27 22:29:21,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:29:21" (1/1) ... [2020-08-27 22:29:21,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 22:29:21,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 22:29:23,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 22:29:23,429 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 22:29:23,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 22:29:23,740 INFO L208 MainTranslator]: Completed translation [2020-08-27 22:29:23,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:29:23 WrapperNode [2020-08-27 22:29:23,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 22:29:23,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 22:29:23,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 22:29:23,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 22:29:23,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:29:23" (1/1) ... [2020-08-27 22:29:23,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:29:23" (1/1) ... [2020-08-27 22:29:23,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:29:23" (1/1) ... [2020-08-27 22:29:23,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:29:23" (1/1) ... [2020-08-27 22:29:23,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:29:23" (1/1) ... [2020-08-27 22:29:23,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:29:23" (1/1) ... [2020-08-27 22:29:23,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:29:23" (1/1) ... [2020-08-27 22:29:23,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 22:29:23,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 22:29:23,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 22:29:23,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 22:29:23,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:29:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 22:29:24,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 22:29:24,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 22:29:24,010 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-27 22:29:24,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-27 22:29:24,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-27 22:29:24,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2020-08-27 22:29:24,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2020-08-27 22:29:24,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-27 22:29:24,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-27 22:29:24,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-27 22:29:24,014 INFO L138 BoogieDeclarations]: Found implementation of procedure always_connected [2020-08-27 22:29:24,014 INFO L138 BoogieDeclarations]: Found implementation of procedure m5632_recover [2020-08-27 22:29:24,014 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_prereset [2020-08-27 22:29:24,015 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_postreset [2020-08-27 22:29:24,015 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_subset_driver_init [2020-08-27 22:29:24,015 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_subset_driver_exit [2020-08-27 22:29:24,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2020-08-27 22:29:24,018 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 22:29:24,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_5 [2020-08-27 22:29:24,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_6 [2020-08-27 22:29:24,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_7 [2020-08-27 22:29:24,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_8 [2020-08-27 22:29:24,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_9 [2020-08-27 22:29:24,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_10 [2020-08-27 22:29:24,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_11 [2020-08-27 22:29:24,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_12 [2020-08-27 22:29:24,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___ldv_usb_unlock_device_13 [2020-08-27 22:29:24,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_14 [2020-08-27 22:29:24,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_15 [2020-08-27 22:29:24,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-27 22:29:24,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2020-08-27 22:29:24,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-27 22:29:24,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-27 22:29:24,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-27 22:29:24,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-27 22:29:24,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_i_mutex_of_inode [2020-08-27 22:29:24,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_i_mutex_of_inode [2020-08-27 22:29:24,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_i_mutex_of_inode [2020-08-27 22:29:24,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_i_mutex_of_inode [2020-08-27 22:29:24,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2020-08-27 22:29:24,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_i_mutex_of_inode [2020-08-27 22:29:24,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_i_mutex_of_inode [2020-08-27 22:29:24,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_i_mutex_of_inode [2020-08-27 22:29:24,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_i_mutex_of_inode [2020-08-27 22:29:24,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_i_mutex_of_inode [2020-08-27 22:29:24,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_i_mutex_of_inode [2020-08-27 22:29:24,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock [2020-08-27 22:29:24,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_lock [2020-08-27 22:29:24,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock [2020-08-27 22:29:24,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_lock [2020-08-27 22:29:24,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_lock [2020-08-27 22:29:24,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_lock [2020-08-27 22:29:24,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock [2020-08-27 22:29:24,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_lock [2020-08-27 22:29:24,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_lock [2020-08-27 22:29:24,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_lock [2020-08-27 22:29:24,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_lock [2020-08-27 22:29:24,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_device [2020-08-27 22:29:24,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_mutex_of_device [2020-08-27 22:29:24,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_device [2020-08-27 22:29:24,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of_device [2020-08-27 22:29:24,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2020-08-27 22:29:24,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_mutex_of_device [2020-08-27 22:29:24,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_device [2020-08-27 22:29:24,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_mutex_of_device [2020-08-27 22:29:24,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_mutex_of_device [2020-08-27 22:29:24,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_mutex_of_device [2020-08-27 22:29:24,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_mutex_of_device [2020-08-27 22:29:24,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_udev [2020-08-27 22:29:24,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_udev [2020-08-27 22:29:24,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2020-08-27 22:29:24,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_udev [2020-08-27 22:29:24,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_udev [2020-08-27 22:29:24,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_udev [2020-08-27 22:29:24,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_udev [2020-08-27 22:29:24,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_udev [2020-08-27 22:29:24,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_udev [2020-08-27 22:29:24,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_udev [2020-08-27 22:29:24,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_udev [2020-08-27 22:29:24,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-27 22:29:24,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_usb_unlock_device [2020-08-27 22:29:24,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-27 22:29:24,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2020-08-27 22:29:24,034 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-08-27 22:29:24,035 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2020-08-27 22:29:24,035 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-08-27 22:29:24,035 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-08-27 22:29:24,036 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-08-27 22:29:24,036 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2020-08-27 22:29:24,036 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2020-08-27 22:29:24,037 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2020-08-27 22:29:24,037 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2020-08-27 22:29:24,037 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2020-08-27 22:29:24,037 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-27 22:29:24,037 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-27 22:29:24,038 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-27 22:29:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 22:29:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-27 22:29:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2020-08-27 22:29:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_8 [2020-08-27 22:29:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-08-27 22:29:24,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_6 [2020-08-27 22:29:24,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_9 [2020-08-27 22:29:24,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_10 [2020-08-27 22:29:24,039 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-27 22:29:24,039 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-27 22:29:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 22:29:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-27 22:29:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-27 22:29:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-27 22:29:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-27 22:29:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-27 22:29:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-27 22:29:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-27 22:29:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2020-08-27 22:29:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2020-08-27 22:29:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-27 22:29:24,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-27 22:29:24,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-27 22:29:24,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-27 22:29:24,042 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_usb_unlock_device [2020-08-27 22:29:24,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___ldv_usb_unlock_device_13 [2020-08-27 22:29:24,043 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-08-27 22:29:24,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_5 [2020-08-27 22:29:24,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_7 [2020-08-27 22:29:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_11 [2020-08-27 22:29:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_i_mutex_of_inode [2020-08-27 22:29:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_i_mutex_of_inode [2020-08-27 22:29:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock [2020-08-27 22:29:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock [2020-08-27 22:29:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_device [2020-08-27 22:29:24,046 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of_device [2020-08-27 22:29:24,046 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_device [2020-08-27 22:29:24,046 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_udev [2020-08-27 22:29:24,047 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_udev [2020-08-27 22:29:24,047 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2020-08-27 22:29:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_12 [2020-08-27 22:29:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2020-08-27 22:29:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-08-27 22:29:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_14 [2020-08-27 22:29:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-08-27 22:29:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_15 [2020-08-27 22:29:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2020-08-27 22:29:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2020-08-27 22:29:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2020-08-27 22:29:24,060 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2020-08-27 22:29:24,060 INFO L130 BoogieDeclarations]: Found specification of procedure always_connected [2020-08-27 22:29:24,060 INFO L130 BoogieDeclarations]: Found specification of procedure m5632_recover [2020-08-27 22:29:24,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-27 22:29:24,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 22:29:24,061 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_prereset [2020-08-27 22:29:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_postreset [2020-08-27 22:29:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_subset_driver_init [2020-08-27 22:29:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_subset_driver_exit [2020-08-27 22:29:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-27 22:29:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2020-08-27 22:29:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-27 22:29:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 22:29:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 22:29:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 22:29:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-27 22:29:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2020-08-27 22:29:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-27 22:29:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-27 22:29:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-27 22:29:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-27 22:29:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_i_mutex_of_inode [2020-08-27 22:29:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_i_mutex_of_inode [2020-08-27 22:29:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_i_mutex_of_inode [2020-08-27 22:29:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2020-08-27 22:29:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_i_mutex_of_inode [2020-08-27 22:29:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_i_mutex_of_inode [2020-08-27 22:29:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_i_mutex_of_inode [2020-08-27 22:29:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_i_mutex_of_inode [2020-08-27 22:29:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_i_mutex_of_inode [2020-08-27 22:29:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock [2020-08-27 22:29:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_lock [2020-08-27 22:29:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_lock [2020-08-27 22:29:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_lock [2020-08-27 22:29:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_lock [2020-08-27 22:29:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_lock [2020-08-27 22:29:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_lock [2020-08-27 22:29:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_lock [2020-08-27 22:29:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_lock [2020-08-27 22:29:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_device [2020-08-27 22:29:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_mutex_of_device [2020-08-27 22:29:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2020-08-27 22:29:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_mutex_of_device [2020-08-27 22:29:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_mutex_of_device [2020-08-27 22:29:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_mutex_of_device [2020-08-27 22:29:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_mutex_of_device [2020-08-27 22:29:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_mutex_of_device [2020-08-27 22:29:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_udev [2020-08-27 22:29:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_udev [2020-08-27 22:29:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2020-08-27 22:29:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_udev [2020-08-27 22:29:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_udev [2020-08-27 22:29:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_udev [2020-08-27 22:29:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_udev [2020-08-27 22:29:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_udev [2020-08-27 22:29:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_udev [2020-08-27 22:29:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-27 22:29:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-27 22:29:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 22:29:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-27 22:29:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-27 22:29:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 22:29:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 22:29:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-27 22:29:24,812 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-27 22:29:26,615 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 22:29:26,616 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-27 22:29:26,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:29:26 BoogieIcfgContainer [2020-08-27 22:29:26,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 22:29:26,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 22:29:26,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 22:29:26,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 22:29:26,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:29:21" (1/3) ... [2020-08-27 22:29:26,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512d95b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:29:26, skipping insertion in model container [2020-08-27 22:29:26,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:29:23" (2/3) ... [2020-08-27 22:29:26,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512d95b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:29:26, skipping insertion in model container [2020-08-27 22:29:26,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:29:26" (3/3) ... [2020-08-27 22:29:26,633 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2020-08-27 22:29:26,645 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 22:29:26,656 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 22:29:26,678 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 22:29:26,712 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 22:29:26,714 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 22:29:26,714 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 22:29:26,714 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 22:29:26,714 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 22:29:26,714 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 22:29:26,715 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 22:29:26,715 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 22:29:26,746 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states. [2020-08-27 22:29:26,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-27 22:29:26,763 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:29:26,765 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 22:29:26,765 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:29:26,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:29:26,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1903613762, now seen corresponding path program 1 times [2020-08-27 22:29:26,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:29:26,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427361813] [2020-08-27 22:29:26,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:29:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:27,900 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-27 22:29:27,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:29:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:28,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:28,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:28,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:28,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:29:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:28,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:28,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:28,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 22:29:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:28,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:28,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:28,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 22:29:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:28,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:28,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:28,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-27 22:29:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:28,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:28,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:28,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-27 22:29:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:28,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:28,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:28,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-27 22:29:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:28,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 22:29:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:28,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:28,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-27 22:29:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:28,780 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-08-27 22:29:28,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427361813] [2020-08-27 22:29:28,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:29:28,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-27 22:29:28,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297852289] [2020-08-27 22:29:28,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-27 22:29:28,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:29:28,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-27 22:29:28,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-27 22:29:28,812 INFO L87 Difference]: Start difference. First operand 480 states. Second operand 6 states. [2020-08-27 22:29:29,209 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-27 22:29:33,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:29:33,454 INFO L93 Difference]: Finished difference Result 553 states and 733 transitions. [2020-08-27 22:29:33,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-27 22:29:33,457 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-08-27 22:29:33,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:29:33,485 INFO L225 Difference]: With dead ends: 553 [2020-08-27 22:29:33,486 INFO L226 Difference]: Without dead ends: 271 [2020-08-27 22:29:33,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-08-27 22:29:33,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-08-27 22:29:33,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 253. [2020-08-27 22:29:33,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-08-27 22:29:33,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 315 transitions. [2020-08-27 22:29:33,651 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 315 transitions. Word has length 138 [2020-08-27 22:29:33,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:29:33,652 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 315 transitions. [2020-08-27 22:29:33,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-27 22:29:33,652 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 315 transitions. [2020-08-27 22:29:33,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-27 22:29:33,656 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:29:33,657 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 22:29:33,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 22:29:33,657 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:29:33,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:29:33,658 INFO L82 PathProgramCache]: Analyzing trace with hash 568155594, now seen corresponding path program 1 times [2020-08-27 22:29:33,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:29:33,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383980861] [2020-08-27 22:29:33,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:29:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:34,340 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-27 22:29:34,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:29:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:34,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:34,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:34,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:34,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:29:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:34,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:34,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:34,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 22:29:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:34,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:34,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:34,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 22:29:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:34,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:34,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:34,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-27 22:29:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:34,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:34,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:34,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-27 22:29:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:34,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:34,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:34,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-27 22:29:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:34,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 22:29:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:34,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:35,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-27 22:29:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:35,088 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-08-27 22:29:35,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383980861] [2020-08-27 22:29:35,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:29:35,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-27 22:29:35,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447312077] [2020-08-27 22:29:35,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-27 22:29:35,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:29:35,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-27 22:29:35,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-27 22:29:35,095 INFO L87 Difference]: Start difference. First operand 253 states and 315 transitions. Second operand 7 states. [2020-08-27 22:29:35,454 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-27 22:29:37,863 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-27 22:29:38,302 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-27 22:29:40,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:29:40,938 INFO L93 Difference]: Finished difference Result 647 states and 816 transitions. [2020-08-27 22:29:40,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-27 22:29:40,939 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-08-27 22:29:40,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:29:40,945 INFO L225 Difference]: With dead ends: 647 [2020-08-27 22:29:40,945 INFO L226 Difference]: Without dead ends: 426 [2020-08-27 22:29:40,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-08-27 22:29:40,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-08-27 22:29:41,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 384. [2020-08-27 22:29:41,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2020-08-27 22:29:41,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 491 transitions. [2020-08-27 22:29:41,012 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 491 transitions. Word has length 138 [2020-08-27 22:29:41,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:29:41,013 INFO L479 AbstractCegarLoop]: Abstraction has 384 states and 491 transitions. [2020-08-27 22:29:41,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-27 22:29:41,013 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 491 transitions. [2020-08-27 22:29:41,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-27 22:29:41,016 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:29:41,016 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 22:29:41,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 22:29:41,017 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:29:41,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:29:41,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1957018819, now seen corresponding path program 1 times [2020-08-27 22:29:41,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:29:41,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589718560] [2020-08-27 22:29:41,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:29:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:41,761 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-27 22:29:41,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:29:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:41,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:41,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:41,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:41,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:29:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:41,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:41,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:42,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 22:29:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:42,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:42,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:42,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 22:29:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:42,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:42,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:42,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-27 22:29:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:42,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:42,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:42,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-27 22:29:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:42,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:42,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:42,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-27 22:29:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:42,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 22:29:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:42,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:42,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-27 22:29:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:42,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:29:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:42,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:42,390 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-08-27 22:29:42,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589718560] [2020-08-27 22:29:42,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:29:42,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-27 22:29:42,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412822246] [2020-08-27 22:29:42,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-27 22:29:42,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:29:42,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-27 22:29:42,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-27 22:29:42,393 INFO L87 Difference]: Start difference. First operand 384 states and 491 transitions. Second operand 8 states. [2020-08-27 22:29:42,786 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-27 22:29:46,945 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-27 22:29:47,821 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-27 22:29:50,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:29:50,010 INFO L93 Difference]: Finished difference Result 1035 states and 1342 transitions. [2020-08-27 22:29:50,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-27 22:29:50,011 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 141 [2020-08-27 22:29:50,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:29:50,019 INFO L225 Difference]: With dead ends: 1035 [2020-08-27 22:29:50,019 INFO L226 Difference]: Without dead ends: 683 [2020-08-27 22:29:50,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-08-27 22:29:50,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2020-08-27 22:29:50,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 649. [2020-08-27 22:29:50,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-27 22:29:50,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 844 transitions. [2020-08-27 22:29:50,113 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 844 transitions. Word has length 141 [2020-08-27 22:29:50,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:29:50,114 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 844 transitions. [2020-08-27 22:29:50,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-27 22:29:50,114 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 844 transitions. [2020-08-27 22:29:50,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-08-27 22:29:50,117 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:29:50,117 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 22:29:50,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 22:29:50,117 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:29:50,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:29:50,118 INFO L82 PathProgramCache]: Analyzing trace with hash -2115073202, now seen corresponding path program 1 times [2020-08-27 22:29:50,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:29:50,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34369462] [2020-08-27 22:29:50,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:29:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:50,751 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-27 22:29:50,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:29:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:50,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:50,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:50,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:50,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:29:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:50,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:51,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:51,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 22:29:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:51,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:51,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:51,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 22:29:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:51,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:51,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:51,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-27 22:29:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:51,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:51,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:51,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-27 22:29:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:51,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:51,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:51,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-27 22:29:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:51,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 22:29:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:51,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:51,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-27 22:29:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:51,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:51,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:51,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:51,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:51,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:51,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:51,556 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-08-27 22:29:51,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34369462] [2020-08-27 22:29:51,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:29:51,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 22:29:51,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135638087] [2020-08-27 22:29:51,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 22:29:51,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:29:51,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 22:29:51,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-27 22:29:51,560 INFO L87 Difference]: Start difference. First operand 649 states and 844 transitions. Second operand 9 states. [2020-08-27 22:29:51,929 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-27 22:29:54,270 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-27 22:29:54,702 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-27 22:29:56,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:29:56,625 INFO L93 Difference]: Finished difference Result 701 states and 907 transitions. [2020-08-27 22:29:56,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-27 22:29:56,625 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-08-27 22:29:56,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:29:56,631 INFO L225 Difference]: With dead ends: 701 [2020-08-27 22:29:56,631 INFO L226 Difference]: Without dead ends: 690 [2020-08-27 22:29:56,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-08-27 22:29:56,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2020-08-27 22:29:56,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 649. [2020-08-27 22:29:56,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-27 22:29:56,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 843 transitions. [2020-08-27 22:29:56,708 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 843 transitions. Word has length 167 [2020-08-27 22:29:56,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:29:56,708 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 843 transitions. [2020-08-27 22:29:56,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 22:29:56,709 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 843 transitions. [2020-08-27 22:29:56,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-08-27 22:29:56,711 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:29:56,711 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 22:29:56,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 22:29:56,712 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:29:56,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:29:56,712 INFO L82 PathProgramCache]: Analyzing trace with hash -2057814900, now seen corresponding path program 1 times [2020-08-27 22:29:56,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:29:56,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801054181] [2020-08-27 22:29:56,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:29:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:57,473 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-27 22:29:57,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:29:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:57,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:57,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:57,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:57,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:29:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:57,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:57,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:57,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 22:29:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:57,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:57,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:57,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 22:29:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:57,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:57,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:57,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-27 22:29:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:58,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:58,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:58,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-27 22:29:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:58,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:58,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:58,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-27 22:29:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:58,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 22:29:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:58,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:58,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-27 22:29:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:58,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:58,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:58,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:58,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:58,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:58,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:58,512 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-08-27 22:29:58,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801054181] [2020-08-27 22:29:58,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:29:58,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 22:29:58,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644323649] [2020-08-27 22:29:58,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 22:29:58,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:29:58,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 22:29:58,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-27 22:29:58,523 INFO L87 Difference]: Start difference. First operand 649 states and 843 transitions. Second operand 9 states. [2020-08-27 22:29:59,011 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-27 22:30:01,745 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-27 22:30:02,200 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-27 22:30:04,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:30:04,205 INFO L93 Difference]: Finished difference Result 681 states and 881 transitions. [2020-08-27 22:30:04,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-27 22:30:04,206 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-08-27 22:30:04,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:30:04,211 INFO L225 Difference]: With dead ends: 681 [2020-08-27 22:30:04,212 INFO L226 Difference]: Without dead ends: 678 [2020-08-27 22:30:04,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-08-27 22:30:04,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2020-08-27 22:30:04,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 648. [2020-08-27 22:30:04,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-08-27 22:30:04,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 841 transitions. [2020-08-27 22:30:04,318 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 841 transitions. Word has length 167 [2020-08-27 22:30:04,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:30:04,319 INFO L479 AbstractCegarLoop]: Abstraction has 648 states and 841 transitions. [2020-08-27 22:30:04,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 22:30:04,319 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 841 transitions. [2020-08-27 22:30:04,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-08-27 22:30:04,325 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:30:04,325 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 22:30:04,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 22:30:04,326 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:30:04,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:30:04,326 INFO L82 PathProgramCache]: Analyzing trace with hash 632050949, now seen corresponding path program 1 times [2020-08-27 22:30:04,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:30:04,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120279020] [2020-08-27 22:30:04,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:30:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,103 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-27 22:30:05,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:30:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:30:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:30:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:30:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:30:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:30:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:30:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 22:30:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:30:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:30:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 22:30:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:30:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:30:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-27 22:30:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:30:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:30:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-27 22:30:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:30:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:30:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-27 22:30:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 22:30:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:30:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-27 22:30:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:30:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:30:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:30:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:30:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:30:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:05,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:30:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:06,033 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-08-27 22:30:06,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120279020] [2020-08-27 22:30:06,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:30:06,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 22:30:06,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526773400] [2020-08-27 22:30:06,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 22:30:06,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:30:06,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 22:30:06,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-27 22:30:06,035 INFO L87 Difference]: Start difference. First operand 648 states and 841 transitions. Second operand 9 states. [2020-08-27 22:30:06,353 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-27 22:30:09,360 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-27 22:30:09,804 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-27 22:30:11,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:30:11,670 INFO L93 Difference]: Finished difference Result 680 states and 879 transitions. [2020-08-27 22:30:11,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-27 22:30:11,671 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2020-08-27 22:30:11,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:30:11,675 INFO L225 Difference]: With dead ends: 680 [2020-08-27 22:30:11,676 INFO L226 Difference]: Without dead ends: 677 [2020-08-27 22:30:11,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-08-27 22:30:11,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-27 22:30:11,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 647. [2020-08-27 22:30:11,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-08-27 22:30:11,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 839 transitions. [2020-08-27 22:30:11,747 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 839 transitions. Word has length 168 [2020-08-27 22:30:11,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:30:11,748 INFO L479 AbstractCegarLoop]: Abstraction has 647 states and 839 transitions. [2020-08-27 22:30:11,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 22:30:11,748 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 839 transitions. [2020-08-27 22:30:11,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-08-27 22:30:11,750 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:30:11,751 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 22:30:11,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 22:30:11,751 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:30:11,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:30:11,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1881448785, now seen corresponding path program 1 times [2020-08-27 22:30:11,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:30:11,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766938056] [2020-08-27 22:30:11,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:30:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:12,538 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-27 22:30:12,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:30:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:12,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:30:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:12,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:30:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:12,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:30:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:12,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:30:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:12,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:30:12,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:12,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:30:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:12,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 22:30:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:12,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:30:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:12,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:30:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:12,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 22:30:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:12,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:30:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:12,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:30:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:12,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-27 22:30:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:12,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:30:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:12,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:30:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:13,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-27 22:30:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:13,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:30:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:13,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:30:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:13,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-27 22:30:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:13,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 22:30:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:13,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:30:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:13,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-27 22:30:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:13,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:30:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:13,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:30:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:13,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:30:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:13,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:30:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:13,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:30:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:13,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:30:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:13,380 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-08-27 22:30:13,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766938056] [2020-08-27 22:30:13,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:30:13,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 22:30:13,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896874813] [2020-08-27 22:30:13,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 22:30:13,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:30:13,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 22:30:13,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-27 22:30:13,382 INFO L87 Difference]: Start difference. First operand 647 states and 839 transitions. Second operand 9 states. [2020-08-27 22:30:13,812 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-27 22:30:16,130 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-27 22:30:16,562 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-27 22:30:18,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:30:18,342 INFO L93 Difference]: Finished difference Result 679 states and 877 transitions. [2020-08-27 22:30:18,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-27 22:30:18,343 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 169 [2020-08-27 22:30:18,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:30:18,348 INFO L225 Difference]: With dead ends: 679 [2020-08-27 22:30:18,348 INFO L226 Difference]: Without dead ends: 676 [2020-08-27 22:30:18,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-08-27 22:30:18,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2020-08-27 22:30:18,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 646. [2020-08-27 22:30:18,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-08-27 22:30:18,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 837 transitions. [2020-08-27 22:30:18,449 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 837 transitions. Word has length 169 [2020-08-27 22:30:18,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:30:18,453 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 837 transitions. [2020-08-27 22:30:18,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 22:30:18,453 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 837 transitions. [2020-08-27 22:30:18,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-27 22:30:18,457 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:30:18,457 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 22:30:18,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-27 22:30:18,457 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:30:18,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:30:18,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1804442952, now seen corresponding path program 1 times [2020-08-27 22:30:18,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:30:18,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450685760] [2020-08-27 22:30:18,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:30:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:19,305 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-27 22:30:19,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:30:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:30:19,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:30:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat