/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 true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST -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 0.1.25-5644d1e-m [2020-08-18 13:28:42,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 13:28:42,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 13:28:42,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 13:28:42,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 13:28:42,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 13:28:42,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 13:28:42,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 13:28:42,451 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 13:28:42,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 13:28:42,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 13:28:42,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 13:28:42,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 13:28:42,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 13:28:42,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 13:28:42,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 13:28:42,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 13:28:42,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 13:28:42,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 13:28:42,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 13:28:42,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 13:28:42,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 13:28:42,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 13:28:42,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 13:28:42,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 13:28:42,486 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 13:28:42,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 13:28:42,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 13:28:42,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 13:28:42,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 13:28:42,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 13:28:42,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 13:28:42,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 13:28:42,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 13:28:42,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 13:28:42,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 13:28:42,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 13:28:42,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 13:28:42,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 13:28:42,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 13:28:42,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 13:28:42,501 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 [2020-08-18 13:28:42,542 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 13:28:42,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 13:28:42,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 13:28:42,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 13:28:42,545 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 13:28:42,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 13:28:42,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 13:28:42,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 13:28:42,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 13:28:42,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 13:28:42,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 13:28:42,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 13:28:42,547 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 13:28:42,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 13:28:42,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 13:28:42,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 13:28:42,549 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 13:28:42,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 13:28:42,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 13:28:42,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 13:28:42,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 13:28:42,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 13:28:42,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 13:28:42,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 13:28:42,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 13:28:42,551 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 13:28:42,551 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 13:28:42,551 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 -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 13:28:42,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 13:28:42,880 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 13:28:42,883 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 13:28:42,885 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 13:28:42,885 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 13:28:42,886 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2020-08-18 13:28:42,955 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef2cca285/2e24d8360b094bd8887ba490cb778f0f/FLAGbd84134e9 [2020-08-18 13:28:43,761 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 13:28:43,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2020-08-18 13:28:43,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef2cca285/2e24d8360b094bd8887ba490cb778f0f/FLAGbd84134e9 [2020-08-18 13:28:44,294 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef2cca285/2e24d8360b094bd8887ba490cb778f0f [2020-08-18 13:28:44,303 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 13:28:44,305 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 13:28:44,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 13:28:44,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 13:28:44,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 13:28:44,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 01:28:44" (1/1) ... [2020-08-18 13:28:44,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@522f8f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:28:44, skipping insertion in model container [2020-08-18 13:28:44,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 01:28:44" (1/1) ... [2020-08-18 13:28:44,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 13:28:44,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 13:28:45,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 13:28:45,910 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 13:28:46,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 13:28:46,209 INFO L208 MainTranslator]: Completed translation [2020-08-18 13:28:46,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:28:46 WrapperNode [2020-08-18 13:28:46,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 13:28:46,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 13:28:46,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 13:28:46,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 13:28:46,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:28:46" (1/1) ... [2020-08-18 13:28:46,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:28:46" (1/1) ... [2020-08-18 13:28:46,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:28:46" (1/1) ... [2020-08-18 13:28:46,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:28:46" (1/1) ... [2020-08-18 13:28:46,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:28:46" (1/1) ... [2020-08-18 13:28:46,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:28:46" (1/1) ... [2020-08-18 13:28:46,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:28:46" (1/1) ... [2020-08-18 13:28:46,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 13:28:46,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 13:28:46,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 13:28:46,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 13:28:46,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:28:46" (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 [2020-08-18 13:28:46,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 13:28:46,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 13:28:46,522 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 13:28:46,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 13:28:46,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 13:28:46,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2020-08-18 13:28:46,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2020-08-18 13:28:46,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 13:28:46,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 13:28:46,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 13:28:46,526 INFO L138 BoogieDeclarations]: Found implementation of procedure always_connected [2020-08-18 13:28:46,527 INFO L138 BoogieDeclarations]: Found implementation of procedure m5632_recover [2020-08-18 13:28:46,528 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_prereset [2020-08-18 13:28:46,528 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_postreset [2020-08-18 13:28:46,529 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_subset_driver_init [2020-08-18 13:28:46,529 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_subset_driver_exit [2020-08-18 13:28:46,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2020-08-18 13:28:46,532 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 13:28:46,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_5 [2020-08-18 13:28:46,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_6 [2020-08-18 13:28:46,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_7 [2020-08-18 13:28:46,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_8 [2020-08-18 13:28:46,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_9 [2020-08-18 13:28:46,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_10 [2020-08-18 13:28:46,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_11 [2020-08-18 13:28:46,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_12 [2020-08-18 13:28:46,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___ldv_usb_unlock_device_13 [2020-08-18 13:28:46,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_14 [2020-08-18 13:28:46,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_15 [2020-08-18 13:28:46,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 13:28:46,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2020-08-18 13:28:46,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-18 13:28:46,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-18 13:28:46,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-18 13:28:46,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-18 13:28:46,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_i_mutex_of_inode [2020-08-18 13:28:46,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_i_mutex_of_inode [2020-08-18 13:28:46,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_i_mutex_of_inode [2020-08-18 13:28:46,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_i_mutex_of_inode [2020-08-18 13:28:46,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2020-08-18 13:28:46,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_i_mutex_of_inode [2020-08-18 13:28:46,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_i_mutex_of_inode [2020-08-18 13:28:46,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_i_mutex_of_inode [2020-08-18 13:28:46,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_i_mutex_of_inode [2020-08-18 13:28:46,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_i_mutex_of_inode [2020-08-18 13:28:46,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_i_mutex_of_inode [2020-08-18 13:28:46,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock [2020-08-18 13:28:46,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_lock [2020-08-18 13:28:46,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock [2020-08-18 13:28:46,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_lock [2020-08-18 13:28:46,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_lock [2020-08-18 13:28:46,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_lock [2020-08-18 13:28:46,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock [2020-08-18 13:28:46,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_lock [2020-08-18 13:28:46,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_lock [2020-08-18 13:28:46,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_lock [2020-08-18 13:28:46,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_lock [2020-08-18 13:28:46,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_device [2020-08-18 13:28:46,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_mutex_of_device [2020-08-18 13:28:46,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_device [2020-08-18 13:28:46,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of_device [2020-08-18 13:28:46,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2020-08-18 13:28:46,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_mutex_of_device [2020-08-18 13:28:46,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_device [2020-08-18 13:28:46,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_mutex_of_device [2020-08-18 13:28:46,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_mutex_of_device [2020-08-18 13:28:46,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_mutex_of_device [2020-08-18 13:28:46,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_mutex_of_device [2020-08-18 13:28:46,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_udev [2020-08-18 13:28:46,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_udev [2020-08-18 13:28:46,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2020-08-18 13:28:46,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_udev [2020-08-18 13:28:46,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_udev [2020-08-18 13:28:46,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_udev [2020-08-18 13:28:46,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_udev [2020-08-18 13:28:46,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_udev [2020-08-18 13:28:46,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_udev [2020-08-18 13:28:46,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_udev [2020-08-18 13:28:46,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_udev [2020-08-18 13:28:46,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 13:28:46,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_usb_unlock_device [2020-08-18 13:28:46,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 13:28:46,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2020-08-18 13:28:46,553 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-08-18 13:28:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2020-08-18 13:28:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-08-18 13:28:46,555 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-08-18 13:28:46,555 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-08-18 13:28:46,555 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2020-08-18 13:28:46,555 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2020-08-18 13:28:46,555 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2020-08-18 13:28:46,556 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2020-08-18 13:28:46,556 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2020-08-18 13:28:46,556 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 13:28:46,556 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-18 13:28:46,556 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 13:28:46,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 13:28:46,557 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-18 13:28:46,557 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2020-08-18 13:28:46,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_8 [2020-08-18 13:28:46,558 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-08-18 13:28:46,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_6 [2020-08-18 13:28:46,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_9 [2020-08-18 13:28:46,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_10 [2020-08-18 13:28:46,559 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 13:28:46,559 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 13:28:46,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 13:28:46,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 13:28:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 13:28:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 13:28:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 13:28:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 13:28:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 13:28:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 13:28:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2020-08-18 13:28:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2020-08-18 13:28:46,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-18 13:28:46,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 13:28:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 13:28:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 13:28:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_usb_unlock_device [2020-08-18 13:28:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___ldv_usb_unlock_device_13 [2020-08-18 13:28:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-08-18 13:28:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_5 [2020-08-18 13:28:46,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_7 [2020-08-18 13:28:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_11 [2020-08-18 13:28:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_i_mutex_of_inode [2020-08-18 13:28:46,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_i_mutex_of_inode [2020-08-18 13:28:46,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock [2020-08-18 13:28:46,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock [2020-08-18 13:28:46,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_device [2020-08-18 13:28:46,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of_device [2020-08-18 13:28:46,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_device [2020-08-18 13:28:46,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_udev [2020-08-18 13:28:46,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_udev [2020-08-18 13:28:46,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2020-08-18 13:28:46,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_12 [2020-08-18 13:28:46,575 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2020-08-18 13:28:46,576 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-08-18 13:28:46,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_14 [2020-08-18 13:28:46,577 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-08-18 13:28:46,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_15 [2020-08-18 13:28:46,578 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2020-08-18 13:28:46,578 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2020-08-18 13:28:46,579 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2020-08-18 13:28:46,587 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2020-08-18 13:28:46,588 INFO L130 BoogieDeclarations]: Found specification of procedure always_connected [2020-08-18 13:28:46,588 INFO L130 BoogieDeclarations]: Found specification of procedure m5632_recover [2020-08-18 13:28:46,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 13:28:46,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 13:28:46,589 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_prereset [2020-08-18 13:28:46,589 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_postreset [2020-08-18 13:28:46,589 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_subset_driver_init [2020-08-18 13:28:46,590 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_subset_driver_exit [2020-08-18 13:28:46,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 13:28:46,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2020-08-18 13:28:46,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 13:28:46,591 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 13:28:46,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 13:28:46,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 13:28:46,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 13:28:46,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2020-08-18 13:28:46,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-18 13:28:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-18 13:28:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-18 13:28:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-18 13:28:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_i_mutex_of_inode [2020-08-18 13:28:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_i_mutex_of_inode [2020-08-18 13:28:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_i_mutex_of_inode [2020-08-18 13:28:46,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2020-08-18 13:28:46,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_i_mutex_of_inode [2020-08-18 13:28:46,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_i_mutex_of_inode [2020-08-18 13:28:46,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_i_mutex_of_inode [2020-08-18 13:28:46,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_i_mutex_of_inode [2020-08-18 13:28:46,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_i_mutex_of_inode [2020-08-18 13:28:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock [2020-08-18 13:28:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_lock [2020-08-18 13:28:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_lock [2020-08-18 13:28:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_lock [2020-08-18 13:28:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_lock [2020-08-18 13:28:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_lock [2020-08-18 13:28:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_lock [2020-08-18 13:28:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_lock [2020-08-18 13:28:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_lock [2020-08-18 13:28:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_device [2020-08-18 13:28:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_mutex_of_device [2020-08-18 13:28:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2020-08-18 13:28:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_mutex_of_device [2020-08-18 13:28:46,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_mutex_of_device [2020-08-18 13:28:46,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_mutex_of_device [2020-08-18 13:28:46,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_mutex_of_device [2020-08-18 13:28:46,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_mutex_of_device [2020-08-18 13:28:46,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_udev [2020-08-18 13:28:46,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_udev [2020-08-18 13:28:46,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2020-08-18 13:28:46,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_udev [2020-08-18 13:28:46,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_udev [2020-08-18 13:28:46,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_udev [2020-08-18 13:28:46,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_udev [2020-08-18 13:28:46,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_udev [2020-08-18 13:28:46,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_udev [2020-08-18 13:28:46,599 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 13:28:46,599 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 13:28:46,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 13:28:46,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 13:28:46,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 13:28:46,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 13:28:46,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 13:28:46,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 13:28:47,234 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 13:28:49,106 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 13:28:49,106 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 13:28:49,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 01:28:49 BoogieIcfgContainer [2020-08-18 13:28:49,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 13:28:49,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 13:28:49,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 13:28:49,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 13:28:49,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 01:28:44" (1/3) ... [2020-08-18 13:28:49,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d9da65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 01:28:49, skipping insertion in model container [2020-08-18 13:28:49,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:28:46" (2/3) ... [2020-08-18 13:28:49,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d9da65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 01:28:49, skipping insertion in model container [2020-08-18 13:28:49,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 01:28:49" (3/3) ... [2020-08-18 13:28:49,128 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2020-08-18 13:28:49,140 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 13:28:49,149 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 13:28:49,163 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 13:28:49,194 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 13:28:49,194 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 13:28:49,194 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 13:28:49,194 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 13:28:49,194 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 13:28:49,194 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 13:28:49,195 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 13:28:49,195 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 13:28:49,227 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states. [2020-08-18 13:28:49,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-18 13:28:49,243 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:28:49,244 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] [2020-08-18 13:28:49,244 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:28:49,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:28:49,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1903613762, now seen corresponding path program 1 times [2020-08-18 13:28:49,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:28:49,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33874707] [2020-08-18 13:28:49,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:28:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:50,357 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-18 13:28:50,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:28:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:50,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:50,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:50,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:50,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:28:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:50,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:50,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:50,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 13:28:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:50,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:50,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:50,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 13:28:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:50,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:50,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:50,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 13:28:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:50,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:50,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:50,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 13:28:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:50,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:50,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:50,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 13:28:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:50,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 13:28:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:50,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:50,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 13:28:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:50,897 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-08-18 13:28:50,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33874707] [2020-08-18 13:28:50,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:28:50,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 13:28:50,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820791346] [2020-08-18 13:28:50,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 13:28:50,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:28:50,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 13:28:50,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 13:28:50,923 INFO L87 Difference]: Start difference. First operand 480 states. Second operand 6 states. [2020-08-18 13:28:51,346 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-18 13:28:55,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:28:55,206 INFO L93 Difference]: Finished difference Result 553 states and 733 transitions. [2020-08-18 13:28:55,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 13:28:55,208 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-08-18 13:28:55,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:28:55,223 INFO L225 Difference]: With dead ends: 553 [2020-08-18 13:28:55,223 INFO L226 Difference]: Without dead ends: 271 [2020-08-18 13:28:55,229 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 [2020-08-18 13:28:55,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-08-18 13:28:55,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 253. [2020-08-18 13:28:55,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-08-18 13:28:55,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 315 transitions. [2020-08-18 13:28:55,352 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 315 transitions. Word has length 138 [2020-08-18 13:28:55,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:28:55,352 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 315 transitions. [2020-08-18 13:28:55,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 13:28:55,353 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 315 transitions. [2020-08-18 13:28:55,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-18 13:28:55,358 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:28:55,358 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] [2020-08-18 13:28:55,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 13:28:55,359 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:28:55,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:28:55,359 INFO L82 PathProgramCache]: Analyzing trace with hash 568155594, now seen corresponding path program 1 times [2020-08-18 13:28:55,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:28:55,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931029756] [2020-08-18 13:28:55,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:28:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:56,008 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-18 13:28:56,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:28:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:56,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:56,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:56,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:56,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:28:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:56,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:56,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:56,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 13:28:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:56,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:56,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:56,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 13:28:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:56,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:56,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:56,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 13:28:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:56,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:56,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:56,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 13:28:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:56,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:56,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:56,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 13:28:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:56,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 13:28:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:56,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:56,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 13:28:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:56,301 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-08-18 13:28:56,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931029756] [2020-08-18 13:28:56,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:28:56,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 13:28:56,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734674871] [2020-08-18 13:28:56,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 13:28:56,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:28:56,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 13:28:56,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 13:28:56,305 INFO L87 Difference]: Start difference. First operand 253 states and 315 transitions. Second operand 7 states. [2020-08-18 13:28:56,645 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-18 13:28:59,161 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-18 13:28:59,529 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-18 13:29:02,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:29:02,002 INFO L93 Difference]: Finished difference Result 647 states and 816 transitions. [2020-08-18 13:29:02,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 13:29:02,008 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-08-18 13:29:02,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:29:02,014 INFO L225 Difference]: With dead ends: 647 [2020-08-18 13:29:02,014 INFO L226 Difference]: Without dead ends: 426 [2020-08-18 13:29:02,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-08-18 13:29:02,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-08-18 13:29:02,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 384. [2020-08-18 13:29:02,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2020-08-18 13:29:02,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 491 transitions. [2020-08-18 13:29:02,102 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 491 transitions. Word has length 138 [2020-08-18 13:29:02,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:29:02,102 INFO L479 AbstractCegarLoop]: Abstraction has 384 states and 491 transitions. [2020-08-18 13:29:02,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 13:29:02,103 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 491 transitions. [2020-08-18 13:29:02,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-18 13:29:02,105 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:29:02,106 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] [2020-08-18 13:29:02,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 13:29:02,106 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:29:02,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:29:02,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1957018819, now seen corresponding path program 1 times [2020-08-18 13:29:02,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:29:02,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458087783] [2020-08-18 13:29:02,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:29:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:02,686 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-18 13:29:02,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:29:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:02,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:02,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:02,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:02,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:29:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:02,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:02,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:02,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 13:29:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:02,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:02,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:02,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 13:29:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:02,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:02,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:02,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 13:29:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:02,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:02,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:03,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 13:29:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:03,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:03,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:03,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 13:29:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:03,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 13:29:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:03,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:03,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 13:29:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:03,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:29:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:03,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:03,155 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-08-18 13:29:03,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458087783] [2020-08-18 13:29:03,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:29:03,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 13:29:03,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154388769] [2020-08-18 13:29:03,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 13:29:03,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:29:03,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 13:29:03,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 13:29:03,157 INFO L87 Difference]: Start difference. First operand 384 states and 491 transitions. Second operand 8 states. [2020-08-18 13:29:03,449 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-18 13:29:07,924 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-18 13:29:08,708 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-18 13:29:10,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:29:10,578 INFO L93 Difference]: Finished difference Result 1035 states and 1342 transitions. [2020-08-18 13:29:10,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 13:29:10,579 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 141 [2020-08-18 13:29:10,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:29:10,585 INFO L225 Difference]: With dead ends: 1035 [2020-08-18 13:29:10,585 INFO L226 Difference]: Without dead ends: 683 [2020-08-18 13:29:10,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-08-18 13:29:10,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2020-08-18 13:29:10,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 649. [2020-08-18 13:29:10,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 13:29:10,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 844 transitions. [2020-08-18 13:29:10,661 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 844 transitions. Word has length 141 [2020-08-18 13:29:10,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:29:10,662 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 844 transitions. [2020-08-18 13:29:10,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 13:29:10,662 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 844 transitions. [2020-08-18 13:29:10,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-08-18 13:29:10,665 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:29:10,665 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] [2020-08-18 13:29:10,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 13:29:10,666 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:29:10,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:29:10,666 INFO L82 PathProgramCache]: Analyzing trace with hash -2115073202, now seen corresponding path program 1 times [2020-08-18 13:29:10,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:29:10,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183594066] [2020-08-18 13:29:10,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:29:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,206 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-18 13:29:11,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:29:11,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:29:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 13:29:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 13:29:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 13:29:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 13:29:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 13:29:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 13:29:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 13:29:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:11,616 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-08-18 13:29:11,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183594066] [2020-08-18 13:29:11,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:29:11,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 13:29:11,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356996646] [2020-08-18 13:29:11,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 13:29:11,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:29:11,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 13:29:11,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-18 13:29:11,618 INFO L87 Difference]: Start difference. First operand 649 states and 844 transitions. Second operand 9 states. [2020-08-18 13:29:12,047 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-18 13:29:15,532 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-18 13:29:15,883 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-18 13:29:17,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:29:17,572 INFO L93 Difference]: Finished difference Result 701 states and 907 transitions. [2020-08-18 13:29:17,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 13:29:17,572 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-08-18 13:29:17,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:29:17,578 INFO L225 Difference]: With dead ends: 701 [2020-08-18 13:29:17,579 INFO L226 Difference]: Without dead ends: 690 [2020-08-18 13:29:17,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-08-18 13:29:17,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2020-08-18 13:29:17,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 649. [2020-08-18 13:29:17,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 13:29:17,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 843 transitions. [2020-08-18 13:29:17,659 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 843 transitions. Word has length 167 [2020-08-18 13:29:17,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:29:17,659 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 843 transitions. [2020-08-18 13:29:17,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 13:29:17,660 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 843 transitions. [2020-08-18 13:29:17,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-08-18 13:29:17,662 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:29:17,662 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] [2020-08-18 13:29:17,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 13:29:17,663 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:29:17,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:29:17,663 INFO L82 PathProgramCache]: Analyzing trace with hash -2057814900, now seen corresponding path program 1 times [2020-08-18 13:29:17,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:29:17,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158443199] [2020-08-18 13:29:17,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:29:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,186 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-18 13:29:18,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:29:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:29:18,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 13:29:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 13:29:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 13:29:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 13:29:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 13:29:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 13:29:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 13:29:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:18,783 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-08-18 13:29:18,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158443199] [2020-08-18 13:29:18,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:29:18,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 13:29:18,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796521344] [2020-08-18 13:29:18,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 13:29:18,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:29:18,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 13:29:18,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-18 13:29:18,791 INFO L87 Difference]: Start difference. First operand 649 states and 843 transitions. Second operand 9 states. [2020-08-18 13:29:19,081 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-18 13:29:21,589 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-18 13:29:21,939 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-18 13:29:23,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:29:23,587 INFO L93 Difference]: Finished difference Result 681 states and 881 transitions. [2020-08-18 13:29:23,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 13:29:23,587 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-08-18 13:29:23,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:29:23,593 INFO L225 Difference]: With dead ends: 681 [2020-08-18 13:29:23,594 INFO L226 Difference]: Without dead ends: 678 [2020-08-18 13:29:23,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-08-18 13:29:23,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2020-08-18 13:29:23,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 648. [2020-08-18 13:29:23,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-08-18 13:29:23,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 841 transitions. [2020-08-18 13:29:23,714 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 841 transitions. Word has length 167 [2020-08-18 13:29:23,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:29:23,715 INFO L479 AbstractCegarLoop]: Abstraction has 648 states and 841 transitions. [2020-08-18 13:29:23,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 13:29:23,715 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 841 transitions. [2020-08-18 13:29:23,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-08-18 13:29:23,720 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:29:23,720 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] [2020-08-18 13:29:23,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 13:29:23,721 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:29:23,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:29:23,721 INFO L82 PathProgramCache]: Analyzing trace with hash 632050949, now seen corresponding path program 1 times [2020-08-18 13:29:23,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:29:23,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506872759] [2020-08-18 13:29:23,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:29:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,284 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-18 13:29:24,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:29:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:29:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 13:29:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 13:29:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 13:29:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 13:29:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 13:29:24,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 13:29:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 13:29:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:24,805 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-08-18 13:29:24,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506872759] [2020-08-18 13:29:24,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:29:24,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 13:29:24,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448054233] [2020-08-18 13:29:24,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 13:29:24,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:29:24,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 13:29:24,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-18 13:29:24,807 INFO L87 Difference]: Start difference. First operand 648 states and 841 transitions. Second operand 9 states. [2020-08-18 13:29:25,125 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-18 13:29:28,754 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-18 13:29:29,129 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-18 13:29:30,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:29:30,762 INFO L93 Difference]: Finished difference Result 680 states and 879 transitions. [2020-08-18 13:29:30,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 13:29:30,763 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2020-08-18 13:29:30,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:29:30,767 INFO L225 Difference]: With dead ends: 680 [2020-08-18 13:29:30,767 INFO L226 Difference]: Without dead ends: 677 [2020-08-18 13:29:30,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-08-18 13:29:30,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-18 13:29:30,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 647. [2020-08-18 13:29:30,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-08-18 13:29:30,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 839 transitions. [2020-08-18 13:29:30,841 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 839 transitions. Word has length 168 [2020-08-18 13:29:30,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:29:30,842 INFO L479 AbstractCegarLoop]: Abstraction has 647 states and 839 transitions. [2020-08-18 13:29:30,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 13:29:30,842 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 839 transitions. [2020-08-18 13:29:30,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-08-18 13:29:30,844 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:29:30,845 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] [2020-08-18 13:29:30,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 13:29:30,845 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:29:30,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:29:30,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1881448785, now seen corresponding path program 1 times [2020-08-18 13:29:30,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:29:30,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505034345] [2020-08-18 13:29:30,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:29:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,338 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-18 13:29:31,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:29:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:29:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 13:29:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 13:29:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 13:29:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 13:29:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 13:29:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 13:29:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 13:29:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:31,799 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-08-18 13:29:31,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505034345] [2020-08-18 13:29:31,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:29:31,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 13:29:31,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252297061] [2020-08-18 13:29:31,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 13:29:31,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:29:31,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 13:29:31,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-18 13:29:31,801 INFO L87 Difference]: Start difference. First operand 647 states and 839 transitions. Second operand 9 states. [2020-08-18 13:29:32,156 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-18 13:29:34,825 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-18 13:29:35,202 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-18 13:29:36,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:29:36,885 INFO L93 Difference]: Finished difference Result 679 states and 877 transitions. [2020-08-18 13:29:36,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 13:29:36,886 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 169 [2020-08-18 13:29:36,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:29:36,891 INFO L225 Difference]: With dead ends: 679 [2020-08-18 13:29:36,891 INFO L226 Difference]: Without dead ends: 676 [2020-08-18 13:29:36,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-08-18 13:29:36,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2020-08-18 13:29:36,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 646. [2020-08-18 13:29:36,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-08-18 13:29:36,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 837 transitions. [2020-08-18 13:29:36,964 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 837 transitions. Word has length 169 [2020-08-18 13:29:36,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:29:36,965 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 837 transitions. [2020-08-18 13:29:36,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 13:29:36,965 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 837 transitions. [2020-08-18 13:29:36,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-18 13:29:36,967 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:29:36,967 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] [2020-08-18 13:29:36,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 13:29:36,967 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:29:36,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:29:36,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1804442952, now seen corresponding path program 1 times [2020-08-18 13:29:36,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:29:36,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359211537] [2020-08-18 13:29:36,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:29:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,506 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-18 13:29:37,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:29:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:29:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 13:29:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 13:29:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 13:29:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 13:29:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 13:29:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 13:29:37,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 13:29:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:29:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:29:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:29:37,938 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-08-18 13:29:37,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359211537] [2020-08-18 13:29:37,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:29:37,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 13:29:37,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221001551] [2020-08-18 13:29:37,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 13:29:37,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:29:37,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 13:29:37,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-18 13:29:37,941 INFO L87 Difference]: Start difference. First operand 646 states and 837 transitions. Second operand 9 states. [2020-08-18 13:29:38,278 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-18 13:29:40,887 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-18 13:29:41,255 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 234