/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=NARROWEST -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 22:27:03,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:27:03,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:27:03,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:27:03,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:27:03,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:27:03,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:27:03,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:27:03,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:27:03,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:27:03,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:27:03,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:27:03,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:27:03,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:27:03,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:27:03,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:27:03,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:27:03,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:27:03,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:27:03,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:27:03,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:27:03,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:27:03,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:27:03,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:27:03,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:27:03,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:27:03,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:27:03,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:27:03,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:27:03,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:27:03,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:27:03,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:27:03,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:27:03,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:27:03,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:27:03,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:27:03,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:27:03,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:27:03,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:27:03,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:27:03,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:27:03,370 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 22:27:03,390 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:27:03,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:27:03,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:27:03,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:27:03,392 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:27:03,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:27:03,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:27:03,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:27:03,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:27:03,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:27:03,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:27:03,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:27:03,393 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:27:03,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:27:03,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:27:03,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:27:03,394 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:27:03,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:27:03,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:27:03,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:27:03,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:27:03,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:27:03,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:27:03,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:27:03,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:27:03,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:27:03,396 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 22:27:03,396 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=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 22:27:03,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:27:03,700 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:27:03,706 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:27:03,707 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:27:03,708 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:27:03,708 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2020-08-18 22:27:03,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0f0bce68/f3b4ae217cc245a9859b4366fd90ccbe/FLAG744993304 [2020-08-18 22:27:04,544 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:27:04,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2020-08-18 22:27:04,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0f0bce68/f3b4ae217cc245a9859b4366fd90ccbe/FLAG744993304 [2020-08-18 22:27:05,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0f0bce68/f3b4ae217cc245a9859b4366fd90ccbe [2020-08-18 22:27:05,106 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:27:05,108 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:27:05,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:27:05,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:27:05,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:27:05,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:27:05" (1/1) ... [2020-08-18 22:27:05,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19fb1f74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:27:05, skipping insertion in model container [2020-08-18 22:27:05,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:27:05" (1/1) ... [2020-08-18 22:27:05,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:27:05,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:27:06,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:27:06,847 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:27:07,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:27:07,327 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:27:07,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:27:07 WrapperNode [2020-08-18 22:27:07,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:27:07,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:27:07,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:27:07,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:27:07,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:27:07" (1/1) ... [2020-08-18 22:27:07,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:27:07" (1/1) ... [2020-08-18 22:27:07,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:27:07" (1/1) ... [2020-08-18 22:27:07,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:27:07" (1/1) ... [2020-08-18 22:27:07,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:27:07" (1/1) ... [2020-08-18 22:27:07,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:27:07" (1/1) ... [2020-08-18 22:27:07,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:27:07" (1/1) ... [2020-08-18 22:27:07,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:27:07,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:27:07,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:27:07,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:27:07,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:27:07" (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 22:27:07,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:27:07,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:27:07,613 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 22:27:07,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 22:27:07,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 22:27:07,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2020-08-18 22:27:07,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2020-08-18 22:27:07,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 22:27:07,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 22:27:07,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 22:27:07,616 INFO L138 BoogieDeclarations]: Found implementation of procedure always_connected [2020-08-18 22:27:07,616 INFO L138 BoogieDeclarations]: Found implementation of procedure m5632_recover [2020-08-18 22:27:07,617 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_prereset [2020-08-18 22:27:07,617 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_postreset [2020-08-18 22:27:07,617 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_subset_driver_init [2020-08-18 22:27:07,618 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_subset_driver_exit [2020-08-18 22:27:07,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2020-08-18 22:27:07,620 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:27:07,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_5 [2020-08-18 22:27:07,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_6 [2020-08-18 22:27:07,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_7 [2020-08-18 22:27:07,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_8 [2020-08-18 22:27:07,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_9 [2020-08-18 22:27:07,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_10 [2020-08-18 22:27:07,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_11 [2020-08-18 22:27:07,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_12 [2020-08-18 22:27:07,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___ldv_usb_unlock_device_13 [2020-08-18 22:27:07,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_14 [2020-08-18 22:27:07,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_15 [2020-08-18 22:27:07,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 22:27:07,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2020-08-18 22:27:07,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-18 22:27:07,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-18 22:27:07,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-18 22:27:07,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-18 22:27:07,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_i_mutex_of_inode [2020-08-18 22:27:07,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_i_mutex_of_inode [2020-08-18 22:27:07,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_i_mutex_of_inode [2020-08-18 22:27:07,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_i_mutex_of_inode [2020-08-18 22:27:07,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2020-08-18 22:27:07,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_i_mutex_of_inode [2020-08-18 22:27:07,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_i_mutex_of_inode [2020-08-18 22:27:07,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_i_mutex_of_inode [2020-08-18 22:27:07,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_i_mutex_of_inode [2020-08-18 22:27:07,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_i_mutex_of_inode [2020-08-18 22:27:07,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_i_mutex_of_inode [2020-08-18 22:27:07,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock [2020-08-18 22:27:07,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_lock [2020-08-18 22:27:07,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock [2020-08-18 22:27:07,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_lock [2020-08-18 22:27:07,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_lock [2020-08-18 22:27:07,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_lock [2020-08-18 22:27:07,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock [2020-08-18 22:27:07,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_lock [2020-08-18 22:27:07,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_lock [2020-08-18 22:27:07,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_lock [2020-08-18 22:27:07,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_lock [2020-08-18 22:27:07,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_device [2020-08-18 22:27:07,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_mutex_of_device [2020-08-18 22:27:07,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_device [2020-08-18 22:27:07,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of_device [2020-08-18 22:27:07,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2020-08-18 22:27:07,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_mutex_of_device [2020-08-18 22:27:07,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_device [2020-08-18 22:27:07,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_mutex_of_device [2020-08-18 22:27:07,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_mutex_of_device [2020-08-18 22:27:07,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_mutex_of_device [2020-08-18 22:27:07,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_mutex_of_device [2020-08-18 22:27:07,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_udev [2020-08-18 22:27:07,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_udev [2020-08-18 22:27:07,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2020-08-18 22:27:07,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_udev [2020-08-18 22:27:07,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_udev [2020-08-18 22:27:07,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_udev [2020-08-18 22:27:07,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_udev [2020-08-18 22:27:07,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_udev [2020-08-18 22:27:07,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_udev [2020-08-18 22:27:07,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_udev [2020-08-18 22:27:07,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_udev [2020-08-18 22:27:07,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 22:27:07,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_usb_unlock_device [2020-08-18 22:27:07,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 22:27:07,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2020-08-18 22:27:07,635 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-08-18 22:27:07,635 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2020-08-18 22:27:07,636 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-08-18 22:27:07,636 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-08-18 22:27:07,636 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-08-18 22:27:07,636 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2020-08-18 22:27:07,636 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2020-08-18 22:27:07,636 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2020-08-18 22:27:07,637 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2020-08-18 22:27:07,637 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2020-08-18 22:27:07,637 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 22:27:07,637 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-18 22:27:07,637 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 22:27:07,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:27:07,638 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-18 22:27:07,638 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2020-08-18 22:27:07,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_8 [2020-08-18 22:27:07,638 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-08-18 22:27:07,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_6 [2020-08-18 22:27:07,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_9 [2020-08-18 22:27:07,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_10 [2020-08-18 22:27:07,639 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:27:07,639 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 22:27:07,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:27:07,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 22:27:07,640 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 22:27:07,640 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 22:27:07,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 22:27:07,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:27:07,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 22:27:07,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 22:27:07,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2020-08-18 22:27:07,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2020-08-18 22:27:07,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-18 22:27:07,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 22:27:07,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 22:27:07,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 22:27:07,642 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_usb_unlock_device [2020-08-18 22:27:07,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___ldv_usb_unlock_device_13 [2020-08-18 22:27:07,643 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-08-18 22:27:07,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_5 [2020-08-18 22:27:07,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_7 [2020-08-18 22:27:07,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_11 [2020-08-18 22:27:07,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_i_mutex_of_inode [2020-08-18 22:27:07,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_i_mutex_of_inode [2020-08-18 22:27:07,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock [2020-08-18 22:27:07,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock [2020-08-18 22:27:07,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_device [2020-08-18 22:27:07,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of_device [2020-08-18 22:27:07,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_device [2020-08-18 22:27:07,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_udev [2020-08-18 22:27:07,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_udev [2020-08-18 22:27:07,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2020-08-18 22:27:07,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_12 [2020-08-18 22:27:07,651 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2020-08-18 22:27:07,651 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-08-18 22:27:07,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_14 [2020-08-18 22:27:07,652 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-08-18 22:27:07,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_15 [2020-08-18 22:27:07,652 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2020-08-18 22:27:07,652 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2020-08-18 22:27:07,653 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2020-08-18 22:27:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2020-08-18 22:27:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure always_connected [2020-08-18 22:27:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure m5632_recover [2020-08-18 22:27:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 22:27:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:27:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_prereset [2020-08-18 22:27:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_postreset [2020-08-18 22:27:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_subset_driver_init [2020-08-18 22:27:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_subset_driver_exit [2020-08-18 22:27:07,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 22:27:07,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2020-08-18 22:27:07,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 22:27:07,662 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:27:07,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:27:07,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:27:07,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 22:27:07,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2020-08-18 22:27:07,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-18 22:27:07,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-18 22:27:07,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-18 22:27:07,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-18 22:27:07,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_i_mutex_of_inode [2020-08-18 22:27:07,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_i_mutex_of_inode [2020-08-18 22:27:07,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_i_mutex_of_inode [2020-08-18 22:27:07,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2020-08-18 22:27:07,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_i_mutex_of_inode [2020-08-18 22:27:07,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_i_mutex_of_inode [2020-08-18 22:27:07,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_i_mutex_of_inode [2020-08-18 22:27:07,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_i_mutex_of_inode [2020-08-18 22:27:07,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_i_mutex_of_inode [2020-08-18 22:27:07,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock [2020-08-18 22:27:07,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_lock [2020-08-18 22:27:07,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_lock [2020-08-18 22:27:07,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_lock [2020-08-18 22:27:07,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_lock [2020-08-18 22:27:07,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_lock [2020-08-18 22:27:07,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_lock [2020-08-18 22:27:07,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_lock [2020-08-18 22:27:07,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_lock [2020-08-18 22:27:07,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_device [2020-08-18 22:27:07,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_mutex_of_device [2020-08-18 22:27:07,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2020-08-18 22:27:07,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_mutex_of_device [2020-08-18 22:27:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_mutex_of_device [2020-08-18 22:27:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_mutex_of_device [2020-08-18 22:27:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_mutex_of_device [2020-08-18 22:27:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_mutex_of_device [2020-08-18 22:27:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_udev [2020-08-18 22:27:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_udev [2020-08-18 22:27:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2020-08-18 22:27:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_udev [2020-08-18 22:27:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_udev [2020-08-18 22:27:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_udev [2020-08-18 22:27:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_udev [2020-08-18 22:27:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_udev [2020-08-18 22:27:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_udev [2020-08-18 22:27:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 22:27:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 22:27:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:27:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 22:27:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 22:27:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:27:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 22:27:07,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:27:08,225 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 22:27:10,221 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:27:10,221 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 22:27:10,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:27:10 BoogieIcfgContainer [2020-08-18 22:27:10,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:27:10,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:27:10,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:27:10,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:27:10,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:27:05" (1/3) ... [2020-08-18 22:27:10,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a74319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:27:10, skipping insertion in model container [2020-08-18 22:27:10,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:27:07" (2/3) ... [2020-08-18 22:27:10,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a74319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:27:10, skipping insertion in model container [2020-08-18 22:27:10,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:27:10" (3/3) ... [2020-08-18 22:27:10,236 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 22:27:10,247 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:27:10,256 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:27:10,270 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:27:10,297 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:27:10,298 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:27:10,298 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:27:10,298 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:27:10,298 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:27:10,298 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:27:10,298 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:27:10,299 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:27:10,327 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states. [2020-08-18 22:27:10,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-18 22:27:10,342 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:27:10,343 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 22:27:10,344 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:27:10,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:27:10,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1903613762, now seen corresponding path program 1 times [2020-08-18 22:27:10,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:27:10,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680742752] [2020-08-18 22:27:10,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:27:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:11,576 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-18 22:27:11,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:27:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:11,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:11,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:11,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:11,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:27:11,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:11,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:11,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:11,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:27:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:11,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:11,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:11,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 22:27:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:11,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:11,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:11,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 22:27:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:11,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:11,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:11,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 22:27:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:11,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:11,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:11,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 22:27:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:11,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 22:27:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:12,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:12,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 22:27:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:12,076 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 22:27:12,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680742752] [2020-08-18 22:27:12,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:27:12,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 22:27:12,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432583997] [2020-08-18 22:27:12,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 22:27:12,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:27:12,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 22:27:12,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 22:27:12,110 INFO L87 Difference]: Start difference. First operand 480 states. Second operand 6 states. [2020-08-18 22:27:12,490 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-18 22:27:16,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:27:16,826 INFO L93 Difference]: Finished difference Result 553 states and 733 transitions. [2020-08-18 22:27:16,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 22:27:16,828 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-08-18 22:27:16,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:27:16,842 INFO L225 Difference]: With dead ends: 553 [2020-08-18 22:27:16,842 INFO L226 Difference]: Without dead ends: 271 [2020-08-18 22:27:16,849 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 22:27:16,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-08-18 22:27:16,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 253. [2020-08-18 22:27:16,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-08-18 22:27:16,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 315 transitions. [2020-08-18 22:27:16,969 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 315 transitions. Word has length 138 [2020-08-18 22:27:16,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:27:16,970 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 315 transitions. [2020-08-18 22:27:16,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 22:27:16,970 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 315 transitions. [2020-08-18 22:27:16,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-18 22:27:16,974 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:27:16,975 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 22:27:16,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:27:16,975 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:27:16,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:27:16,976 INFO L82 PathProgramCache]: Analyzing trace with hash 568155594, now seen corresponding path program 1 times [2020-08-18 22:27:16,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:27:16,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030707570] [2020-08-18 22:27:16,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:27:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:17,618 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-18 22:27:17,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:27:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:17,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:17,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:17,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:17,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:27:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:17,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:17,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:17,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:27:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:17,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:17,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:17,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 22:27:17,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:17,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:17,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:17,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 22:27:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:17,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:17,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:17,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 22:27:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:17,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:17,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:18,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 22:27:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:18,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 22:27:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:18,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:18,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 22:27:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:18,095 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 22:27:18,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030707570] [2020-08-18 22:27:18,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:27:18,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 22:27:18,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470952878] [2020-08-18 22:27:18,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 22:27:18,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:27:18,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 22:27:18,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 22:27:18,101 INFO L87 Difference]: Start difference. First operand 253 states and 315 transitions. Second operand 7 states. [2020-08-18 22:27:18,431 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-18 22:27:21,028 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-18 22:27:21,401 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-18 22:27:23,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:27:23,984 INFO L93 Difference]: Finished difference Result 647 states and 816 transitions. [2020-08-18 22:27:23,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 22:27:23,993 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-08-18 22:27:23,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:27:24,003 INFO L225 Difference]: With dead ends: 647 [2020-08-18 22:27:24,004 INFO L226 Difference]: Without dead ends: 426 [2020-08-18 22:27:24,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-08-18 22:27:24,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-08-18 22:27:24,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 384. [2020-08-18 22:27:24,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2020-08-18 22:27:24,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 491 transitions. [2020-08-18 22:27:24,075 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 491 transitions. Word has length 138 [2020-08-18 22:27:24,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:27:24,076 INFO L479 AbstractCegarLoop]: Abstraction has 384 states and 491 transitions. [2020-08-18 22:27:24,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 22:27:24,077 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 491 transitions. [2020-08-18 22:27:24,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-18 22:27:24,079 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:27:24,080 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 22:27:24,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:27:24,080 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:27:24,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:27:24,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1957018819, now seen corresponding path program 1 times [2020-08-18 22:27:24,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:27:24,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165066780] [2020-08-18 22:27:24,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:27:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:24,633 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-18 22:27:24,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:27:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:24,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:24,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:24,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:24,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:27:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:24,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:24,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:24,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:27:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:24,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:24,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:24,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 22:27:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:24,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:24,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:24,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 22:27:24,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:24,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:24,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:24,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 22:27:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:24,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:24,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:24,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 22:27:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:24,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 22:27:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:24,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:24,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 22:27:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:24,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:27:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:24,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:25,018 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 22:27:25,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165066780] [2020-08-18 22:27:25,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:27:25,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 22:27:25,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23034869] [2020-08-18 22:27:25,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:27:25,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:27:25,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:27:25,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:27:25,021 INFO L87 Difference]: Start difference. First operand 384 states and 491 transitions. Second operand 8 states. [2020-08-18 22:27:25,442 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-18 22:27:29,989 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-18 22:27:30,833 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-18 22:27:32,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:27:32,875 INFO L93 Difference]: Finished difference Result 1035 states and 1342 transitions. [2020-08-18 22:27:32,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 22:27:32,875 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 141 [2020-08-18 22:27:32,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:27:32,883 INFO L225 Difference]: With dead ends: 1035 [2020-08-18 22:27:32,883 INFO L226 Difference]: Without dead ends: 683 [2020-08-18 22:27:32,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-08-18 22:27:32,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2020-08-18 22:27:32,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 649. [2020-08-18 22:27:32,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 22:27:32,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 844 transitions. [2020-08-18 22:27:32,976 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 844 transitions. Word has length 141 [2020-08-18 22:27:32,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:27:32,977 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 844 transitions. [2020-08-18 22:27:32,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:27:32,978 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 844 transitions. [2020-08-18 22:27:32,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-08-18 22:27:32,980 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:27:32,980 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 22:27:32,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:27:32,981 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:27:32,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:27:32,981 INFO L82 PathProgramCache]: Analyzing trace with hash -2115073202, now seen corresponding path program 1 times [2020-08-18 22:27:32,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:27:32,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492433267] [2020-08-18 22:27:32,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:27:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,482 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-18 22:27:33,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:27:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:27:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:27:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 22:27:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 22:27:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 22:27:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 22:27:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 22:27:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 22:27:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:33,907 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 22:27:33,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492433267] [2020-08-18 22:27:33,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:27:33,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:27:33,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297262334] [2020-08-18 22:27:33,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:27:33,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:27:33,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:27:33,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:27:33,911 INFO L87 Difference]: Start difference. First operand 649 states and 844 transitions. Second operand 9 states. [2020-08-18 22:27:34,344 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-18 22:27:37,261 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-18 22:27:37,754 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-18 22:27:39,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:27:39,571 INFO L93 Difference]: Finished difference Result 701 states and 907 transitions. [2020-08-18 22:27:39,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 22:27:39,572 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-08-18 22:27:39,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:27:39,578 INFO L225 Difference]: With dead ends: 701 [2020-08-18 22:27:39,578 INFO L226 Difference]: Without dead ends: 690 [2020-08-18 22:27:39,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-08-18 22:27:39,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2020-08-18 22:27:39,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 649. [2020-08-18 22:27:39,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 22:27:39,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 843 transitions. [2020-08-18 22:27:39,661 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 843 transitions. Word has length 167 [2020-08-18 22:27:39,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:27:39,661 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 843 transitions. [2020-08-18 22:27:39,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:27:39,662 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 843 transitions. [2020-08-18 22:27:39,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-08-18 22:27:39,664 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:27:39,665 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 22:27:39,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 22:27:39,665 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:27:39,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:27:39,665 INFO L82 PathProgramCache]: Analyzing trace with hash -2057814900, now seen corresponding path program 1 times [2020-08-18 22:27:39,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:27:39,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879719339] [2020-08-18 22:27:39,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:27:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,241 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-18 22:27:40,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:27:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:27:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:27:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 22:27:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 22:27:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 22:27:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 22:27:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 22:27:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 22:27:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:40,790 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 22:27:40,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879719339] [2020-08-18 22:27:40,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:27:40,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:27:40,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338028887] [2020-08-18 22:27:40,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:27:40,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:27:40,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:27:40,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:27:40,801 INFO L87 Difference]: Start difference. First operand 649 states and 843 transitions. Second operand 9 states. [2020-08-18 22:27:41,159 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-18 22:27:43,792 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-18 22:27:44,170 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-18 22:27:45,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:27:45,917 INFO L93 Difference]: Finished difference Result 681 states and 881 transitions. [2020-08-18 22:27:45,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 22:27:45,918 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-08-18 22:27:45,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:27:45,924 INFO L225 Difference]: With dead ends: 681 [2020-08-18 22:27:45,924 INFO L226 Difference]: Without dead ends: 678 [2020-08-18 22:27:45,925 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 22:27:45,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2020-08-18 22:27:45,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 648. [2020-08-18 22:27:45,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-08-18 22:27:46,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 841 transitions. [2020-08-18 22:27:46,001 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 841 transitions. Word has length 167 [2020-08-18 22:27:46,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:27:46,002 INFO L479 AbstractCegarLoop]: Abstraction has 648 states and 841 transitions. [2020-08-18 22:27:46,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:27:46,002 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 841 transitions. [2020-08-18 22:27:46,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-08-18 22:27:46,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:27:46,005 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 22:27:46,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 22:27:46,005 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:27:46,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:27:46,006 INFO L82 PathProgramCache]: Analyzing trace with hash 632050949, now seen corresponding path program 1 times [2020-08-18 22:27:46,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:27:46,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265450368] [2020-08-18 22:27:46,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:27:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:46,552 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-18 22:27:46,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:27:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:46,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:46,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:46,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:46,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:27:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:46,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:46,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:46,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:27:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:46,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:46,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:46,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 22:27:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:46,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:46,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:46,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 22:27:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:46,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:46,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:46,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 22:27:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:46,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:46,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:46,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 22:27:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:47,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 22:27:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:47,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:47,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 22:27:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:47,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:47,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:47,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:47,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:47,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:47,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:47,260 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 22:27:47,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265450368] [2020-08-18 22:27:47,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:27:47,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:27:47,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564237001] [2020-08-18 22:27:47,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:27:47,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:27:47,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:27:47,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:27:47,264 INFO L87 Difference]: Start difference. First operand 648 states and 841 transitions. Second operand 9 states. [2020-08-18 22:27:47,760 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-18 22:27:51,784 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-18 22:27:52,147 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-18 22:27:53,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:27:53,855 INFO L93 Difference]: Finished difference Result 680 states and 879 transitions. [2020-08-18 22:27:53,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 22:27:53,855 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2020-08-18 22:27:53,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:27:53,859 INFO L225 Difference]: With dead ends: 680 [2020-08-18 22:27:53,859 INFO L226 Difference]: Without dead ends: 677 [2020-08-18 22:27:53,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-08-18 22:27:53,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-18 22:27:53,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 647. [2020-08-18 22:27:53,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-08-18 22:27:53,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 839 transitions. [2020-08-18 22:27:53,956 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 839 transitions. Word has length 168 [2020-08-18 22:27:53,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:27:53,957 INFO L479 AbstractCegarLoop]: Abstraction has 647 states and 839 transitions. [2020-08-18 22:27:53,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:27:53,957 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 839 transitions. [2020-08-18 22:27:53,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-08-18 22:27:53,963 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:27:53,964 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 22:27:53,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 22:27:53,964 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:27:53,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:27:53,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1881448785, now seen corresponding path program 1 times [2020-08-18 22:27:53,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:27:53,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351040888] [2020-08-18 22:27:53,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:27:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,475 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-18 22:27:54,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:27:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:27:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:27:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 22:27:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 22:27:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 22:27:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 22:27:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 22:27:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 22:27:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:54,986 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 22:27:54,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351040888] [2020-08-18 22:27:54,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:27:54,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:27:54,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191801321] [2020-08-18 22:27:54,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:27:54,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:27:54,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:27:54,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:27:54,989 INFO L87 Difference]: Start difference. First operand 647 states and 839 transitions. Second operand 9 states. [2020-08-18 22:27:55,333 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-18 22:27:57,808 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-18 22:27:58,136 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-18 22:27:59,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:27:59,630 INFO L93 Difference]: Finished difference Result 679 states and 877 transitions. [2020-08-18 22:27:59,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 22:27:59,630 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 169 [2020-08-18 22:27:59,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:27:59,634 INFO L225 Difference]: With dead ends: 679 [2020-08-18 22:27:59,634 INFO L226 Difference]: Without dead ends: 676 [2020-08-18 22:27:59,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 1 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 22:27:59,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2020-08-18 22:27:59,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 646. [2020-08-18 22:27:59,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-08-18 22:27:59,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 837 transitions. [2020-08-18 22:27:59,701 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 837 transitions. Word has length 169 [2020-08-18 22:27:59,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:27:59,702 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 837 transitions. [2020-08-18 22:27:59,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:27:59,702 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 837 transitions. [2020-08-18 22:27:59,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-18 22:27:59,704 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:27:59,704 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 22:27:59,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 22:27:59,705 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:27:59,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:27:59,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1804442952, now seen corresponding path program 1 times [2020-08-18 22:27:59,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:27:59,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146378955] [2020-08-18 22:27:59,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:27:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,230 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-18 22:28:00,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:28:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:28:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:28:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:28:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:28:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:28:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:28:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:28:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:28:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:28:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 22:28:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:28:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:28:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 22:28:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:28:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:28:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 22:28:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:28:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:28:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 22:28:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 22:28:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:28:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 22:28:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:28:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:28:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:28:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:28:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:28:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:28:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:28:00,683 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 22:28:00,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146378955] [2020-08-18 22:28:00,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:28:00,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:28:00,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708223935] [2020-08-18 22:28:00,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:28:00,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:28:00,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:28:00,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:28:00,685 INFO L87 Difference]: Start difference. First operand 646 states and 837 transitions. Second operand 9 states. [2020-08-18 22:28:00,972 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 241