/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=HIGHLEXORDER -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 20:01:53,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:01:53,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:01:53,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:01:53,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:01:53,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:01:53,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:01:53,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:01:53,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:01:53,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:01:53,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:01:53,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:01:53,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:01:53,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:01:53,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:01:53,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:01:53,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:01:53,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:01:53,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:01:53,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:01:53,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:01:53,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:01:53,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:01:53,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:01:53,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:01:53,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:01:53,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:01:53,638 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:01:53,639 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:01:53,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:01:53,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:01:53,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:01:53,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:01:53,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:01:53,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:01:53,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:01:53,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:01:53,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:01:53,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:01:53,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:01:53,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:01:53,649 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 20:01:53,688 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:01:53,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:01:53,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:01:53,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:01:53,691 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:01:53,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:01:53,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:01:53,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:01:53,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:01:53,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:01:53,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:01:53,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:01:53,694 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:01:53,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:01:53,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:01:53,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:01:53,695 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:01:53,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:01:53,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:01:53,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:01:53,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:01:53,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:01:53,696 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:01:53,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:01:53,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:01:53,696 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:01:53,696 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 20:01:53,697 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=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 20:01:54,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:01:54,032 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:01:54,039 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:01:54,041 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:01:54,041 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:01:54,042 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2020-08-18 20:01:54,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca4135b06/7c35f06a71a64744bcbee86e91b700c8/FLAG98cf0f566 [2020-08-18 20:01:54,878 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:01:54,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2020-08-18 20:01:54,920 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca4135b06/7c35f06a71a64744bcbee86e91b700c8/FLAG98cf0f566 [2020-08-18 20:01:55,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca4135b06/7c35f06a71a64744bcbee86e91b700c8 [2020-08-18 20:01:55,374 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:01:55,376 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:01:55,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:01:55,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:01:55,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:01:55,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:01:55" (1/1) ... [2020-08-18 20:01:55,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49fb4cb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:01:55, skipping insertion in model container [2020-08-18 20:01:55,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:01:55" (1/1) ... [2020-08-18 20:01:55,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:01:55,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:01:56,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:01:57,037 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:01:57,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:01:57,421 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:01:57,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:01:57 WrapperNode [2020-08-18 20:01:57,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:01:57,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:01:57,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:01:57,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:01:57,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:01:57" (1/1) ... [2020-08-18 20:01:57,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:01:57" (1/1) ... [2020-08-18 20:01:57,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:01:57" (1/1) ... [2020-08-18 20:01:57,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:01:57" (1/1) ... [2020-08-18 20:01:57,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:01:57" (1/1) ... [2020-08-18 20:01:57,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:01:57" (1/1) ... [2020-08-18 20:01:57,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:01:57" (1/1) ... [2020-08-18 20:01:57,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:01:57,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:01:57,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:01:57,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:01:57,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:01:57" (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 20:01:57,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:01:57,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:01:57,769 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 20:01:57,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 20:01:57,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 20:01:57,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2020-08-18 20:01:57,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2020-08-18 20:01:57,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 20:01:57,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 20:01:57,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 20:01:57,773 INFO L138 BoogieDeclarations]: Found implementation of procedure always_connected [2020-08-18 20:01:57,773 INFO L138 BoogieDeclarations]: Found implementation of procedure m5632_recover [2020-08-18 20:01:57,775 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_prereset [2020-08-18 20:01:57,775 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_postreset [2020-08-18 20:01:57,775 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_subset_driver_init [2020-08-18 20:01:57,776 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_subset_driver_exit [2020-08-18 20:01:57,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2020-08-18 20:01:57,779 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:01:57,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_5 [2020-08-18 20:01:57,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_6 [2020-08-18 20:01:57,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_7 [2020-08-18 20:01:57,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_8 [2020-08-18 20:01:57,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_9 [2020-08-18 20:01:57,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_10 [2020-08-18 20:01:57,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_11 [2020-08-18 20:01:57,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_12 [2020-08-18 20:01:57,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___ldv_usb_unlock_device_13 [2020-08-18 20:01:57,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_14 [2020-08-18 20:01:57,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_15 [2020-08-18 20:01:57,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 20:01:57,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2020-08-18 20:01:57,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-18 20:01:57,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-18 20:01:57,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-18 20:01:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-18 20:01:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_i_mutex_of_inode [2020-08-18 20:01:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_i_mutex_of_inode [2020-08-18 20:01:57,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_i_mutex_of_inode [2020-08-18 20:01:57,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_i_mutex_of_inode [2020-08-18 20:01:57,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2020-08-18 20:01:57,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_i_mutex_of_inode [2020-08-18 20:01:57,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_i_mutex_of_inode [2020-08-18 20:01:57,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_i_mutex_of_inode [2020-08-18 20:01:57,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_i_mutex_of_inode [2020-08-18 20:01:57,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_i_mutex_of_inode [2020-08-18 20:01:57,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_i_mutex_of_inode [2020-08-18 20:01:57,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock [2020-08-18 20:01:57,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_lock [2020-08-18 20:01:57,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock [2020-08-18 20:01:57,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_lock [2020-08-18 20:01:57,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_lock [2020-08-18 20:01:57,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_lock [2020-08-18 20:01:57,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock [2020-08-18 20:01:57,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_lock [2020-08-18 20:01:57,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_lock [2020-08-18 20:01:57,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_lock [2020-08-18 20:01:57,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_lock [2020-08-18 20:01:57,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_device [2020-08-18 20:01:57,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_mutex_of_device [2020-08-18 20:01:57,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_device [2020-08-18 20:01:57,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of_device [2020-08-18 20:01:57,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2020-08-18 20:01:57,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_mutex_of_device [2020-08-18 20:01:57,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_device [2020-08-18 20:01:57,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_mutex_of_device [2020-08-18 20:01:57,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_mutex_of_device [2020-08-18 20:01:57,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_mutex_of_device [2020-08-18 20:01:57,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_mutex_of_device [2020-08-18 20:01:57,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_udev [2020-08-18 20:01:57,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_udev [2020-08-18 20:01:57,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2020-08-18 20:01:57,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_udev [2020-08-18 20:01:57,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_udev [2020-08-18 20:01:57,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_udev [2020-08-18 20:01:57,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_udev [2020-08-18 20:01:57,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_udev [2020-08-18 20:01:57,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_udev [2020-08-18 20:01:57,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_udev [2020-08-18 20:01:57,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_udev [2020-08-18 20:01:57,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 20:01:57,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_usb_unlock_device [2020-08-18 20:01:57,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 20:01:57,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2020-08-18 20:01:57,803 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-08-18 20:01:57,803 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2020-08-18 20:01:57,804 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-08-18 20:01:57,804 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-08-18 20:01:57,804 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-08-18 20:01:57,804 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2020-08-18 20:01:57,804 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2020-08-18 20:01:57,804 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2020-08-18 20:01:57,805 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2020-08-18 20:01:57,805 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2020-08-18 20:01:57,805 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 20:01:57,805 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-18 20:01:57,806 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 20:01:57,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:01:57,806 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-18 20:01:57,806 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2020-08-18 20:01:57,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_8 [2020-08-18 20:01:57,806 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-08-18 20:01:57,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_6 [2020-08-18 20:01:57,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_9 [2020-08-18 20:01:57,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_10 [2020-08-18 20:01:57,807 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:01:57,807 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 20:01:57,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:01:57,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 20:01:57,808 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 20:01:57,808 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 20:01:57,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 20:01:57,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:01:57,809 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 20:01:57,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 20:01:57,809 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2020-08-18 20:01:57,809 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2020-08-18 20:01:57,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-18 20:01:57,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 20:01:57,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 20:01:57,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 20:01:57,811 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_usb_unlock_device [2020-08-18 20:01:57,811 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___ldv_usb_unlock_device_13 [2020-08-18 20:01:57,812 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-08-18 20:01:57,812 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_5 [2020-08-18 20:01:57,812 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_7 [2020-08-18 20:01:57,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_11 [2020-08-18 20:01:57,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_i_mutex_of_inode [2020-08-18 20:01:57,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_i_mutex_of_inode [2020-08-18 20:01:57,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock [2020-08-18 20:01:57,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock [2020-08-18 20:01:57,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_device [2020-08-18 20:01:57,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of_device [2020-08-18 20:01:57,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_device [2020-08-18 20:01:57,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_udev [2020-08-18 20:01:57,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_udev [2020-08-18 20:01:57,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2020-08-18 20:01:57,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_12 [2020-08-18 20:01:57,820 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2020-08-18 20:01:57,821 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-08-18 20:01:57,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_14 [2020-08-18 20:01:57,822 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-08-18 20:01:57,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_15 [2020-08-18 20:01:57,823 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2020-08-18 20:01:57,823 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2020-08-18 20:01:57,824 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2020-08-18 20:01:57,833 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2020-08-18 20:01:57,833 INFO L130 BoogieDeclarations]: Found specification of procedure always_connected [2020-08-18 20:01:57,834 INFO L130 BoogieDeclarations]: Found specification of procedure m5632_recover [2020-08-18 20:01:57,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:01:57,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:01:57,835 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_prereset [2020-08-18 20:01:57,836 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_postreset [2020-08-18 20:01:57,836 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_subset_driver_init [2020-08-18 20:01:57,836 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_subset_driver_exit [2020-08-18 20:01:57,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 20:01:57,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2020-08-18 20:01:57,838 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 20:01:57,838 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:01:57,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:01:57,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:01:57,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 20:01:57,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2020-08-18 20:01:57,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-18 20:01:57,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-18 20:01:57,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-18 20:01:57,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-18 20:01:57,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_i_mutex_of_inode [2020-08-18 20:01:57,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_i_mutex_of_inode [2020-08-18 20:01:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_i_mutex_of_inode [2020-08-18 20:01:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2020-08-18 20:01:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_i_mutex_of_inode [2020-08-18 20:01:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_i_mutex_of_inode [2020-08-18 20:01:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_i_mutex_of_inode [2020-08-18 20:01:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_i_mutex_of_inode [2020-08-18 20:01:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_i_mutex_of_inode [2020-08-18 20:01:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock [2020-08-18 20:01:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_lock [2020-08-18 20:01:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_lock [2020-08-18 20:01:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_lock [2020-08-18 20:01:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_lock [2020-08-18 20:01:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_lock [2020-08-18 20:01:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_lock [2020-08-18 20:01:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_lock [2020-08-18 20:01:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_lock [2020-08-18 20:01:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_device [2020-08-18 20:01:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_mutex_of_device [2020-08-18 20:01:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2020-08-18 20:01:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_mutex_of_device [2020-08-18 20:01:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_mutex_of_device [2020-08-18 20:01:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_mutex_of_device [2020-08-18 20:01:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_mutex_of_device [2020-08-18 20:01:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_mutex_of_device [2020-08-18 20:01:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_udev [2020-08-18 20:01:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_udev [2020-08-18 20:01:57,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2020-08-18 20:01:57,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_udev [2020-08-18 20:01:57,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_udev [2020-08-18 20:01:57,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_udev [2020-08-18 20:01:57,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_udev [2020-08-18 20:01:57,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_udev [2020-08-18 20:01:57,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_udev [2020-08-18 20:01:57,850 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:01:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 20:01:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:01:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:01:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 20:01:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:01:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:01:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:01:58,592 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 20:02:00,674 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:02:00,675 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 20:02:00,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:02:00 BoogieIcfgContainer [2020-08-18 20:02:00,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:02:00,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:02:00,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:02:00,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:02:00,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:01:55" (1/3) ... [2020-08-18 20:02:00,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383fc7f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:02:00, skipping insertion in model container [2020-08-18 20:02:00,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:01:57" (2/3) ... [2020-08-18 20:02:00,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383fc7f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:02:00, skipping insertion in model container [2020-08-18 20:02:00,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:02:00" (3/3) ... [2020-08-18 20:02:00,691 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 20:02:00,702 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:02:00,710 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:02:00,725 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:02:00,753 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:02:00,753 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:02:00,753 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:02:00,753 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:02:00,753 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:02:00,754 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:02:00,754 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:02:00,754 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:02:00,782 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states. [2020-08-18 20:02:00,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-18 20:02:00,797 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:02:00,799 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 20:02:00,799 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:02:00,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:02:00,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1903613762, now seen corresponding path program 1 times [2020-08-18 20:02:00,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:02:00,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246016328] [2020-08-18 20:02:00,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:02:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:01,909 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-18 20:02:01,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:02:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:02,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:02,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:02,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:02,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:02:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:02,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:02,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:02,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:02:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:02,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:02,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:02,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 20:02:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:02,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:02,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:02,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 20:02:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:02,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:02,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:02,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 20:02:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:02,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:02,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:02,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 20:02:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:02,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 20:02:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:02,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:02,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 20:02:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:02,459 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 20:02:02,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246016328] [2020-08-18 20:02:02,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:02:02,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:02:02,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67912940] [2020-08-18 20:02:02,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:02:02,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:02:02,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:02:02,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:02:02,494 INFO L87 Difference]: Start difference. First operand 480 states. Second operand 6 states. [2020-08-18 20:02:02,929 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-18 20:02:07,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:02:07,252 INFO L93 Difference]: Finished difference Result 553 states and 733 transitions. [2020-08-18 20:02:07,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 20:02:07,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-08-18 20:02:07,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:02:07,271 INFO L225 Difference]: With dead ends: 553 [2020-08-18 20:02:07,271 INFO L226 Difference]: Without dead ends: 271 [2020-08-18 20:02:07,278 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 20:02:07,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-08-18 20:02:07,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 253. [2020-08-18 20:02:07,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-08-18 20:02:07,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 315 transitions. [2020-08-18 20:02:07,394 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 315 transitions. Word has length 138 [2020-08-18 20:02:07,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:02:07,395 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 315 transitions. [2020-08-18 20:02:07,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:02:07,395 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 315 transitions. [2020-08-18 20:02:07,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-18 20:02:07,400 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:02:07,400 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 20:02:07,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:02:07,401 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:02:07,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:02:07,401 INFO L82 PathProgramCache]: Analyzing trace with hash 568155594, now seen corresponding path program 1 times [2020-08-18 20:02:07,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:02:07,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61531003] [2020-08-18 20:02:07,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:02:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:07,919 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-18 20:02:07,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:02:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:08,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:08,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:08,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:08,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:02:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:08,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:08,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:08,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:02:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:08,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:08,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:08,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 20:02:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:08,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:08,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:08,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 20:02:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:08,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:08,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:08,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 20:02:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:08,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:08,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:08,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:08,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 20:02:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:08,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 20:02:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:08,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:08,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 20:02:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:08,325 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 20:02:08,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61531003] [2020-08-18 20:02:08,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:02:08,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 20:02:08,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742520451] [2020-08-18 20:02:08,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 20:02:08,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:02:08,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 20:02:08,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:02:08,329 INFO L87 Difference]: Start difference. First operand 253 states and 315 transitions. Second operand 7 states. [2020-08-18 20:02:08,736 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-18 20:02:11,562 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-18 20:02:11,962 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-18 20:02:14,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:02:14,524 INFO L93 Difference]: Finished difference Result 647 states and 816 transitions. [2020-08-18 20:02:14,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 20:02:14,532 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-08-18 20:02:14,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:02:14,540 INFO L225 Difference]: With dead ends: 647 [2020-08-18 20:02:14,540 INFO L226 Difference]: Without dead ends: 426 [2020-08-18 20:02:14,546 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 20:02:14,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-08-18 20:02:14,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 384. [2020-08-18 20:02:14,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2020-08-18 20:02:14,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 491 transitions. [2020-08-18 20:02:14,609 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 491 transitions. Word has length 138 [2020-08-18 20:02:14,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:02:14,610 INFO L479 AbstractCegarLoop]: Abstraction has 384 states and 491 transitions. [2020-08-18 20:02:14,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 20:02:14,611 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 491 transitions. [2020-08-18 20:02:14,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-18 20:02:14,613 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:02:14,614 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 20:02:14,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:02:14,614 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:02:14,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:02:14,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1957018819, now seen corresponding path program 1 times [2020-08-18 20:02:14,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:02:14,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718711073] [2020-08-18 20:02:14,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:02:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,159 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-18 20:02:15,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:02:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:02:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:02:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 20:02:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 20:02:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 20:02:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 20:02:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 20:02:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 20:02:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:02:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:15,530 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 20:02:15,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718711073] [2020-08-18 20:02:15,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:02:15,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:02:15,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601575113] [2020-08-18 20:02:15,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:02:15,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:02:15,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:02:15,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:02:15,533 INFO L87 Difference]: Start difference. First operand 384 states and 491 transitions. Second operand 8 states. [2020-08-18 20:02:15,835 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-18 20:02:20,537 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-18 20:02:21,381 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-18 20:02:23,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:02:23,385 INFO L93 Difference]: Finished difference Result 1035 states and 1342 transitions. [2020-08-18 20:02:23,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 20:02:23,386 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 141 [2020-08-18 20:02:23,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:02:23,402 INFO L225 Difference]: With dead ends: 1035 [2020-08-18 20:02:23,402 INFO L226 Difference]: Without dead ends: 683 [2020-08-18 20:02:23,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:02:23,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2020-08-18 20:02:23,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 649. [2020-08-18 20:02:23,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 20:02:23,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 844 transitions. [2020-08-18 20:02:23,509 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 844 transitions. Word has length 141 [2020-08-18 20:02:23,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:02:23,510 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 844 transitions. [2020-08-18 20:02:23,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:02:23,510 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 844 transitions. [2020-08-18 20:02:23,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-08-18 20:02:23,513 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:02:23,513 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 20:02:23,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:02:23,514 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:02:23,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:02:23,514 INFO L82 PathProgramCache]: Analyzing trace with hash -2115073202, now seen corresponding path program 1 times [2020-08-18 20:02:23,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:02:23,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635618880] [2020-08-18 20:02:23,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:02:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,011 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-18 20:02:24,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:02:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:02:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:02:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 20:02:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 20:02:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 20:02:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 20:02:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 20:02:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 20:02:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:24,474 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 20:02:24,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635618880] [2020-08-18 20:02:24,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:02:24,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:02:24,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756887139] [2020-08-18 20:02:24,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:02:24,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:02:24,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:02:24,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:02:24,477 INFO L87 Difference]: Start difference. First operand 649 states and 844 transitions. Second operand 9 states. [2020-08-18 20:02:24,810 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-18 20:02:27,358 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-18 20:02:27,737 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-18 20:02:29,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:02:29,559 INFO L93 Difference]: Finished difference Result 701 states and 907 transitions. [2020-08-18 20:02:29,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:02:29,560 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-08-18 20:02:29,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:02:29,566 INFO L225 Difference]: With dead ends: 701 [2020-08-18 20:02:29,567 INFO L226 Difference]: Without dead ends: 690 [2020-08-18 20:02:29,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-08-18 20:02:29,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2020-08-18 20:02:29,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 649. [2020-08-18 20:02:29,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 20:02:29,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 843 transitions. [2020-08-18 20:02:29,648 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 843 transitions. Word has length 167 [2020-08-18 20:02:29,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:02:29,648 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 843 transitions. [2020-08-18 20:02:29,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:02:29,649 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 843 transitions. [2020-08-18 20:02:29,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-08-18 20:02:29,651 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:02:29,651 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 20:02:29,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:02:29,652 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:02:29,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:02:29,652 INFO L82 PathProgramCache]: Analyzing trace with hash -2057814900, now seen corresponding path program 1 times [2020-08-18 20:02:29,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:02:29,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470683696] [2020-08-18 20:02:29,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:02:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,285 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-18 20:02:30,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:02:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:02:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:02:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 20:02:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 20:02:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 20:02:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 20:02:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 20:02:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 20:02:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:30,931 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 20:02:30,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470683696] [2020-08-18 20:02:30,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:02:30,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:02:30,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875539475] [2020-08-18 20:02:30,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:02:30,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:02:30,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:02:30,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:02:30,939 INFO L87 Difference]: Start difference. First operand 649 states and 843 transitions. Second operand 9 states. [2020-08-18 20:02:31,240 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-18 20:02:33,782 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-18 20:02:34,145 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-18 20:02:35,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:02:35,980 INFO L93 Difference]: Finished difference Result 681 states and 881 transitions. [2020-08-18 20:02:35,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:02:35,981 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-08-18 20:02:35,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:02:35,991 INFO L225 Difference]: With dead ends: 681 [2020-08-18 20:02:35,991 INFO L226 Difference]: Without dead ends: 678 [2020-08-18 20:02:35,992 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 20:02:35,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2020-08-18 20:02:36,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 648. [2020-08-18 20:02:36,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-08-18 20:02:36,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 841 transitions. [2020-08-18 20:02:36,133 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 841 transitions. Word has length 167 [2020-08-18 20:02:36,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:02:36,137 INFO L479 AbstractCegarLoop]: Abstraction has 648 states and 841 transitions. [2020-08-18 20:02:36,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:02:36,137 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 841 transitions. [2020-08-18 20:02:36,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-08-18 20:02:36,142 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:02:36,143 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 20:02:36,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:02:36,143 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:02:36,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:02:36,144 INFO L82 PathProgramCache]: Analyzing trace with hash 632050949, now seen corresponding path program 1 times [2020-08-18 20:02:36,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:02:36,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275141953] [2020-08-18 20:02:36,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:02:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:36,747 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-18 20:02:36,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:02:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:36,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:36,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:36,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:36,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:02:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:36,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:36,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:36,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:02:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:36,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:36,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:36,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 20:02:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:36,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:36,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:36,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 20:02:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:36,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:37,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:37,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 20:02:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:37,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:37,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:37,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 20:02:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:37,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 20:02:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:37,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:37,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 20:02:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:37,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:37,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:37,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:37,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:37,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:37,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:37,322 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 20:02:37,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275141953] [2020-08-18 20:02:37,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:02:37,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:02:37,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122424249] [2020-08-18 20:02:37,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:02:37,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:02:37,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:02:37,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:02:37,326 INFO L87 Difference]: Start difference. First operand 648 states and 841 transitions. Second operand 9 states. [2020-08-18 20:02:37,840 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-18 20:02:41,786 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-18 20:02:42,156 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-18 20:02:43,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:02:43,822 INFO L93 Difference]: Finished difference Result 680 states and 879 transitions. [2020-08-18 20:02:43,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:02:43,828 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2020-08-18 20:02:43,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:02:43,833 INFO L225 Difference]: With dead ends: 680 [2020-08-18 20:02:43,833 INFO L226 Difference]: Without dead ends: 677 [2020-08-18 20:02:43,834 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 20:02:43,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-18 20:02:43,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 647. [2020-08-18 20:02:43,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-08-18 20:02:43,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 839 transitions. [2020-08-18 20:02:43,924 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 839 transitions. Word has length 168 [2020-08-18 20:02:43,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:02:43,924 INFO L479 AbstractCegarLoop]: Abstraction has 647 states and 839 transitions. [2020-08-18 20:02:43,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:02:43,925 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 839 transitions. [2020-08-18 20:02:43,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-08-18 20:02:43,929 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:02:43,929 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 20:02:43,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:02:43,929 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:02:43,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:02:43,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1881448785, now seen corresponding path program 1 times [2020-08-18 20:02:43,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:02:43,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908583587] [2020-08-18 20:02:43,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:02:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,501 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-18 20:02:44,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:02:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:02:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:02:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 20:02:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 20:02:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:44,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 20:02:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 20:02:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 20:02:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 20:02:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:44,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:45,090 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 20:02:45,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908583587] [2020-08-18 20:02:45,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:02:45,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:02:45,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917151650] [2020-08-18 20:02:45,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:02:45,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:02:45,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:02:45,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:02:45,093 INFO L87 Difference]: Start difference. First operand 647 states and 839 transitions. Second operand 9 states. [2020-08-18 20:02:45,586 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-18 20:02:48,817 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-18 20:02:49,178 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-18 20:02:50,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:02:50,802 INFO L93 Difference]: Finished difference Result 679 states and 877 transitions. [2020-08-18 20:02:50,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:02:50,803 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 169 [2020-08-18 20:02:50,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:02:50,808 INFO L225 Difference]: With dead ends: 679 [2020-08-18 20:02:50,808 INFO L226 Difference]: Without dead ends: 676 [2020-08-18 20:02:50,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 1 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 20:02:50,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2020-08-18 20:02:50,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 646. [2020-08-18 20:02:50,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-08-18 20:02:50,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 837 transitions. [2020-08-18 20:02:50,882 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 837 transitions. Word has length 169 [2020-08-18 20:02:50,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:02:50,882 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 837 transitions. [2020-08-18 20:02:50,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:02:50,883 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 837 transitions. [2020-08-18 20:02:50,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-18 20:02:50,885 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:02:50,886 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 20:02:50,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:02:50,886 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:02:50,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:02:50,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1804442952, now seen corresponding path program 1 times [2020-08-18 20:02:50,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:02:50,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310439939] [2020-08-18 20:02:50,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:02:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,334 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-18 20:02:51,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:02:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:02:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:02:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 20:02:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 20:02:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 20:02:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 20:02:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 20:02:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 20:02:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:02:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:02:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:02:51,723 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 20:02:51,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310439939] [2020-08-18 20:02:51,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:02:51,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:02:51,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734248151] [2020-08-18 20:02:51,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:02:51,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:02:51,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:02:51,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:02:51,725 INFO L87 Difference]: Start difference. First operand 646 states and 837 transitions. Second operand 9 states. [2020-08-18 20:02:52,158 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 241