/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -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 0.1.25-177f698 [2020-08-21 21:05:56,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:05:56,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:05:56,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:05:56,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:05:56,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:05:56,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:05:56,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:05:56,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:05:56,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:05:56,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:05:56,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:05:56,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:05:56,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:05:56,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:05:56,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:05:56,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:05:56,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:05:56,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:05:56,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:05:56,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:05:56,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:05:56,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:05:56,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:05:56,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:05:56,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:05:56,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:05:56,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:05:56,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:05:56,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:05:56,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:05:56,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:05:56,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:05:56,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:05:56,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:05:56,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:05:56,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:05:56,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:05:56,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:05:56,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:05:56,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:05:56,751 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 [2020-08-21 21:05:56,793 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:05:56,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:05:56,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:05:56,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:05:56,795 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:05:56,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:05:56,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:05:56,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:05:56,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:05:56,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:05:56,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:05:56,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:05:56,798 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:05:56,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:05:56,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:05:56,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:05:56,799 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:05:56,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:05:56,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:05:56,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:05:56,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:05:56,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:05:56,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:05:56,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:05:56,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:05:56,801 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:05:56,802 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-21 21:05:56,802 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=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-08-21 21:05:57,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:05:57,100 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:05:57,103 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:05:57,105 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:05:57,106 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:05:57,106 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2020-08-21 21:05:57,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc79e5559/1b8f0e451be04f8a93d668052a91a701/FLAGb5a51ced3 [2020-08-21 21:05:57,915 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:05:57,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2020-08-21 21:05:57,962 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc79e5559/1b8f0e451be04f8a93d668052a91a701/FLAGb5a51ced3 [2020-08-21 21:05:58,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc79e5559/1b8f0e451be04f8a93d668052a91a701 [2020-08-21 21:05:58,040 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:05:58,042 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:05:58,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:05:58,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:05:58,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:05:58,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:05:58" (1/1) ... [2020-08-21 21:05:58,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6266eb80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:05:58, skipping insertion in model container [2020-08-21 21:05:58,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:05:58" (1/1) ... [2020-08-21 21:05:58,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:05:58,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:05:59,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:05:59,573 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:05:59,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:06:00,140 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:06:00,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:06:00 WrapperNode [2020-08-21 21:06:00,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:06:00,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:06:00,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:06:00,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:06:00,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:06:00" (1/1) ... [2020-08-21 21:06:00,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:06:00" (1/1) ... [2020-08-21 21:06:00,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:06:00" (1/1) ... [2020-08-21 21:06:00,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:06:00" (1/1) ... [2020-08-21 21:06:00,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:06:00" (1/1) ... [2020-08-21 21:06:00,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:06:00" (1/1) ... [2020-08-21 21:06:00,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:06:00" (1/1) ... [2020-08-21 21:06:00,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:06:00,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:06:00,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:06:00,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:06:00,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:06:00" (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 [2020-08-21 21:06:00,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:06:00,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:06:00,470 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 21:06:00,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-21 21:06:00,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-21 21:06:00,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2020-08-21 21:06:00,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2020-08-21 21:06:00,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-21 21:06:00,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-21 21:06:00,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-21 21:06:00,473 INFO L138 BoogieDeclarations]: Found implementation of procedure always_connected [2020-08-21 21:06:00,474 INFO L138 BoogieDeclarations]: Found implementation of procedure m5632_recover [2020-08-21 21:06:00,474 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_prereset [2020-08-21 21:06:00,474 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_postreset [2020-08-21 21:06:00,474 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_subset_driver_init [2020-08-21 21:06:00,475 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_subset_driver_exit [2020-08-21 21:06:00,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2020-08-21 21:06:00,477 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:06:00,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_5 [2020-08-21 21:06:00,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_6 [2020-08-21 21:06:00,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_7 [2020-08-21 21:06:00,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_8 [2020-08-21 21:06:00,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_9 [2020-08-21 21:06:00,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_10 [2020-08-21 21:06:00,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_11 [2020-08-21 21:06:00,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_12 [2020-08-21 21:06:00,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___ldv_usb_unlock_device_13 [2020-08-21 21:06:00,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_14 [2020-08-21 21:06:00,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_15 [2020-08-21 21:06:00,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-21 21:06:00,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2020-08-21 21:06:00,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-21 21:06:00,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-21 21:06:00,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-21 21:06:00,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-21 21:06:00,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_i_mutex_of_inode [2020-08-21 21:06:00,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_i_mutex_of_inode [2020-08-21 21:06:00,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_i_mutex_of_inode [2020-08-21 21:06:00,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_i_mutex_of_inode [2020-08-21 21:06:00,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2020-08-21 21:06:00,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_i_mutex_of_inode [2020-08-21 21:06:00,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_i_mutex_of_inode [2020-08-21 21:06:00,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_i_mutex_of_inode [2020-08-21 21:06:00,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_i_mutex_of_inode [2020-08-21 21:06:00,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_i_mutex_of_inode [2020-08-21 21:06:00,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_i_mutex_of_inode [2020-08-21 21:06:00,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock [2020-08-21 21:06:00,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_lock [2020-08-21 21:06:00,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock [2020-08-21 21:06:00,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_lock [2020-08-21 21:06:00,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_lock [2020-08-21 21:06:00,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_lock [2020-08-21 21:06:00,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock [2020-08-21 21:06:00,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_lock [2020-08-21 21:06:00,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_lock [2020-08-21 21:06:00,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_lock [2020-08-21 21:06:00,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_lock [2020-08-21 21:06:00,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_device [2020-08-21 21:06:00,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_mutex_of_device [2020-08-21 21:06:00,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_device [2020-08-21 21:06:00,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of_device [2020-08-21 21:06:00,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2020-08-21 21:06:00,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_mutex_of_device [2020-08-21 21:06:00,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_device [2020-08-21 21:06:00,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_mutex_of_device [2020-08-21 21:06:00,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_mutex_of_device [2020-08-21 21:06:00,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_mutex_of_device [2020-08-21 21:06:00,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_mutex_of_device [2020-08-21 21:06:00,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_udev [2020-08-21 21:06:00,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_udev [2020-08-21 21:06:00,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2020-08-21 21:06:00,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_udev [2020-08-21 21:06:00,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_udev [2020-08-21 21:06:00,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_udev [2020-08-21 21:06:00,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_udev [2020-08-21 21:06:00,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_udev [2020-08-21 21:06:00,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_udev [2020-08-21 21:06:00,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_udev [2020-08-21 21:06:00,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_udev [2020-08-21 21:06:00,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-21 21:06:00,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_usb_unlock_device [2020-08-21 21:06:00,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-21 21:06:00,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2020-08-21 21:06:00,492 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-08-21 21:06:00,492 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2020-08-21 21:06:00,492 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-08-21 21:06:00,493 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-08-21 21:06:00,493 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-08-21 21:06:00,493 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2020-08-21 21:06:00,493 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2020-08-21 21:06:00,493 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2020-08-21 21:06:00,493 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2020-08-21 21:06:00,494 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2020-08-21 21:06:00,494 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-21 21:06:00,494 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-21 21:06:00,494 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-21 21:06:00,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:06:00,495 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-21 21:06:00,495 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2020-08-21 21:06:00,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_8 [2020-08-21 21:06:00,495 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-08-21 21:06:00,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_6 [2020-08-21 21:06:00,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_9 [2020-08-21 21:06:00,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_10 [2020-08-21 21:06:00,496 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 21:06:00,496 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 21:06:00,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:06:00,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-21 21:06:00,496 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 21:06:00,497 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 21:06:00,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-21 21:06:00,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 21:06:00,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-21 21:06:00,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-21 21:06:00,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2020-08-21 21:06:00,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2020-08-21 21:06:00,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-21 21:06:00,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-21 21:06:00,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-21 21:06:00,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-21 21:06:00,499 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_usb_unlock_device [2020-08-21 21:06:00,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___ldv_usb_unlock_device_13 [2020-08-21 21:06:00,500 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-08-21 21:06:00,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_5 [2020-08-21 21:06:00,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_7 [2020-08-21 21:06:00,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_11 [2020-08-21 21:06:00,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_i_mutex_of_inode [2020-08-21 21:06:00,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_i_mutex_of_inode [2020-08-21 21:06:00,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock [2020-08-21 21:06:00,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock [2020-08-21 21:06:00,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_device [2020-08-21 21:06:00,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of_device [2020-08-21 21:06:00,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_device [2020-08-21 21:06:00,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_udev [2020-08-21 21:06:00,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_udev [2020-08-21 21:06:00,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2020-08-21 21:06:00,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_12 [2020-08-21 21:06:00,507 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2020-08-21 21:06:00,507 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-08-21 21:06:00,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_14 [2020-08-21 21:06:00,508 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-08-21 21:06:00,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_15 [2020-08-21 21:06:00,508 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2020-08-21 21:06:00,508 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2020-08-21 21:06:00,509 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2020-08-21 21:06:00,517 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2020-08-21 21:06:00,517 INFO L130 BoogieDeclarations]: Found specification of procedure always_connected [2020-08-21 21:06:00,517 INFO L130 BoogieDeclarations]: Found specification of procedure m5632_recover [2020-08-21 21:06:00,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 21:06:00,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:06:00,518 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_prereset [2020-08-21 21:06:00,518 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_postreset [2020-08-21 21:06:00,518 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_subset_driver_init [2020-08-21 21:06:00,518 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_subset_driver_exit [2020-08-21 21:06:00,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-21 21:06:00,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2020-08-21 21:06:00,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-21 21:06:00,519 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:06:00,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:06:00,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:06:00,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-21 21:06:00,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2020-08-21 21:06:00,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-21 21:06:00,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-21 21:06:00,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-21 21:06:00,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-21 21:06:00,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_i_mutex_of_inode [2020-08-21 21:06:00,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_i_mutex_of_inode [2020-08-21 21:06:00,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_i_mutex_of_inode [2020-08-21 21:06:00,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2020-08-21 21:06:00,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_i_mutex_of_inode [2020-08-21 21:06:00,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_i_mutex_of_inode [2020-08-21 21:06:00,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_i_mutex_of_inode [2020-08-21 21:06:00,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_i_mutex_of_inode [2020-08-21 21:06:00,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_i_mutex_of_inode [2020-08-21 21:06:00,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock [2020-08-21 21:06:00,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_lock [2020-08-21 21:06:00,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_lock [2020-08-21 21:06:00,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_lock [2020-08-21 21:06:00,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_lock [2020-08-21 21:06:00,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_lock [2020-08-21 21:06:00,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_lock [2020-08-21 21:06:00,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_lock [2020-08-21 21:06:00,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_lock [2020-08-21 21:06:00,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_device [2020-08-21 21:06:00,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_mutex_of_device [2020-08-21 21:06:00,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2020-08-21 21:06:00,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_mutex_of_device [2020-08-21 21:06:00,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_mutex_of_device [2020-08-21 21:06:00,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_mutex_of_device [2020-08-21 21:06:00,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_mutex_of_device [2020-08-21 21:06:00,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_mutex_of_device [2020-08-21 21:06:00,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_udev [2020-08-21 21:06:00,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_udev [2020-08-21 21:06:00,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2020-08-21 21:06:00,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_udev [2020-08-21 21:06:00,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_udev [2020-08-21 21:06:00,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_udev [2020-08-21 21:06:00,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_udev [2020-08-21 21:06:00,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_udev [2020-08-21 21:06:00,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_udev [2020-08-21 21:06:00,526 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 21:06:00,526 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-21 21:06:00,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:06:00,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 21:06:00,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 21:06:00,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:06:00,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 21:06:00,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:06:01,083 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-21 21:06:03,077 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:06:03,078 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 21:06:03,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:06:03 BoogieIcfgContainer [2020-08-21 21:06:03,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:06:03,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:06:03,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:06:03,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:06:03,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:05:58" (1/3) ... [2020-08-21 21:06:03,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8132d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:06:03, skipping insertion in model container [2020-08-21 21:06:03,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:06:00" (2/3) ... [2020-08-21 21:06:03,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8132d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:06:03, skipping insertion in model container [2020-08-21 21:06:03,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:06:03" (3/3) ... [2020-08-21 21:06:03,093 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2020-08-21 21:06:03,104 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:06:03,112 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:06:03,127 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:06:03,154 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:06:03,154 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:06:03,154 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:06:03,154 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:06:03,154 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:06:03,154 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:06:03,155 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:06:03,155 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:06:03,184 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states. [2020-08-21 21:06:03,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-21 21:06:03,198 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:06:03,200 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] [2020-08-21 21:06:03,200 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:06:03,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:06:03,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1903613762, now seen corresponding path program 1 times [2020-08-21 21:06:03,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:06:03,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259346444] [2020-08-21 21:06:03,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:06:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:04,277 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-21 21:06:04,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:06:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:04,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:04,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:04,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:04,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:06:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:04,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:04,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:04,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:06:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:04,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:04,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:04,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 21:06:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:04,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:04,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:04,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 21:06:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:04,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:04,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:04,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 21:06:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:04,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:04,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:04,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 21:06:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:04,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 21:06:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:04,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:04,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-21 21:06:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:04,886 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-08-21 21:06:04,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259346444] [2020-08-21 21:06:04,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:06:04,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 21:06:04,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159012325] [2020-08-21 21:06:04,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 21:06:04,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:06:04,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 21:06:04,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 21:06:04,916 INFO L87 Difference]: Start difference. First operand 480 states. Second operand 6 states. [2020-08-21 21:06:05,317 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-21 21:06:09,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:06:09,517 INFO L93 Difference]: Finished difference Result 553 states and 733 transitions. [2020-08-21 21:06:09,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 21:06:09,521 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-08-21 21:06:09,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:06:09,548 INFO L225 Difference]: With dead ends: 553 [2020-08-21 21:06:09,548 INFO L226 Difference]: Without dead ends: 271 [2020-08-21 21:06:09,559 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 [2020-08-21 21:06:09,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-08-21 21:06:09,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 253. [2020-08-21 21:06:09,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-08-21 21:06:09,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 315 transitions. [2020-08-21 21:06:09,665 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 315 transitions. Word has length 138 [2020-08-21 21:06:09,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:06:09,665 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 315 transitions. [2020-08-21 21:06:09,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 21:06:09,666 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 315 transitions. [2020-08-21 21:06:09,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-21 21:06:09,670 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:06:09,670 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] [2020-08-21 21:06:09,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:06:09,671 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:06:09,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:06:09,671 INFO L82 PathProgramCache]: Analyzing trace with hash 568155594, now seen corresponding path program 1 times [2020-08-21 21:06:09,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:06:09,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508663602] [2020-08-21 21:06:09,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:06:09,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:10,390 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-21 21:06:10,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:06:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:10,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:10,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:10,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:10,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:06:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:10,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:10,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:10,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:06:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:10,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:10,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:10,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 21:06:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:10,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:10,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:10,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 21:06:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:10,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:10,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:10,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 21:06:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:10,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:10,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:10,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 21:06:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:10,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 21:06:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:10,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:10,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-21 21:06:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:10,764 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-08-21 21:06:10,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508663602] [2020-08-21 21:06:10,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:06:10,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 21:06:10,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112745449] [2020-08-21 21:06:10,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 21:06:10,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:06:10,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 21:06:10,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:06:10,769 INFO L87 Difference]: Start difference. First operand 253 states and 315 transitions. Second operand 7 states. [2020-08-21 21:06:11,104 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-21 21:06:13,758 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-21 21:06:14,126 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-21 21:06:16,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:06:16,654 INFO L93 Difference]: Finished difference Result 647 states and 816 transitions. [2020-08-21 21:06:16,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 21:06:16,659 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-08-21 21:06:16,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:06:16,664 INFO L225 Difference]: With dead ends: 647 [2020-08-21 21:06:16,665 INFO L226 Difference]: Without dead ends: 426 [2020-08-21 21:06:16,667 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 [2020-08-21 21:06:16,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-08-21 21:06:16,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 384. [2020-08-21 21:06:16,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2020-08-21 21:06:16,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 491 transitions. [2020-08-21 21:06:16,735 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 491 transitions. Word has length 138 [2020-08-21 21:06:16,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:06:16,735 INFO L479 AbstractCegarLoop]: Abstraction has 384 states and 491 transitions. [2020-08-21 21:06:16,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 21:06:16,736 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 491 transitions. [2020-08-21 21:06:16,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-21 21:06:16,738 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:06:16,738 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] [2020-08-21 21:06:16,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:06:16,739 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:06:16,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:06:16,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1957018819, now seen corresponding path program 1 times [2020-08-21 21:06:16,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:06:16,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694145285] [2020-08-21 21:06:16,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:06:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,342 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-21 21:06:17,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:06:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:06:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:06:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 21:06:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 21:06:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 21:06:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 21:06:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 21:06:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 21:06:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:06:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:17,842 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-08-21 21:06:17,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694145285] [2020-08-21 21:06:17,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:06:17,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:06:17,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092075708] [2020-08-21 21:06:17,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:06:17,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:06:17,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:06:17,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:06:17,845 INFO L87 Difference]: Start difference. First operand 384 states and 491 transitions. Second operand 8 states. [2020-08-21 21:06:18,222 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-21 21:06:22,818 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-21 21:06:23,607 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-21 21:06:25,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:06:25,648 INFO L93 Difference]: Finished difference Result 1035 states and 1342 transitions. [2020-08-21 21:06:25,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 21:06:25,649 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 141 [2020-08-21 21:06:25,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:06:25,657 INFO L225 Difference]: With dead ends: 1035 [2020-08-21 21:06:25,657 INFO L226 Difference]: Without dead ends: 683 [2020-08-21 21:06:25,659 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 [2020-08-21 21:06:25,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2020-08-21 21:06:25,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 649. [2020-08-21 21:06:25,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-21 21:06:25,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 844 transitions. [2020-08-21 21:06:25,738 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 844 transitions. Word has length 141 [2020-08-21 21:06:25,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:06:25,739 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 844 transitions. [2020-08-21 21:06:25,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:06:25,739 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 844 transitions. [2020-08-21 21:06:25,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-08-21 21:06:25,741 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:06:25,742 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] [2020-08-21 21:06:25,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:06:25,742 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:06:25,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:06:25,742 INFO L82 PathProgramCache]: Analyzing trace with hash -2115073202, now seen corresponding path program 1 times [2020-08-21 21:06:25,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:06:25,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874329924] [2020-08-21 21:06:25,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:06:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,318 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-21 21:06:26,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:06:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:06:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:06:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 21:06:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 21:06:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 21:06:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 21:06:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 21:06:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-21 21:06:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:26,757 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-08-21 21:06:26,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874329924] [2020-08-21 21:06:26,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:06:26,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:06:26,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121182291] [2020-08-21 21:06:26,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:06:26,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:06:26,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:06:26,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:06:26,759 INFO L87 Difference]: Start difference. First operand 649 states and 844 transitions. Second operand 9 states. [2020-08-21 21:06:27,090 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-21 21:06:29,862 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-21 21:06:30,289 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-21 21:06:32,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:06:32,048 INFO L93 Difference]: Finished difference Result 701 states and 907 transitions. [2020-08-21 21:06:32,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 21:06:32,049 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-08-21 21:06:32,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:06:32,055 INFO L225 Difference]: With dead ends: 701 [2020-08-21 21:06:32,056 INFO L226 Difference]: Without dead ends: 690 [2020-08-21 21:06:32,057 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 [2020-08-21 21:06:32,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2020-08-21 21:06:32,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 649. [2020-08-21 21:06:32,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-21 21:06:32,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 843 transitions. [2020-08-21 21:06:32,136 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 843 transitions. Word has length 167 [2020-08-21 21:06:32,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:06:32,137 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 843 transitions. [2020-08-21 21:06:32,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:06:32,137 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 843 transitions. [2020-08-21 21:06:32,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-08-21 21:06:32,140 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:06:32,140 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] [2020-08-21 21:06:32,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:06:32,141 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:06:32,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:06:32,141 INFO L82 PathProgramCache]: Analyzing trace with hash -2057814900, now seen corresponding path program 1 times [2020-08-21 21:06:32,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:06:32,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797874241] [2020-08-21 21:06:32,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:06:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:32,720 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-21 21:06:32,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:06:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:32,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:32,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:32,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:32,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:06:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:32,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:32,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:32,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:06:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:32,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:32,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:32,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:32,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 21:06:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:32,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:32,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:32,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 21:06:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:32,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:32,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:32,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 21:06:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:33,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:33,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:33,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 21:06:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:33,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 21:06:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:33,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:33,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-21 21:06:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:33,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:33,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:33,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:33,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:33,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:33,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:33,234 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-08-21 21:06:33,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797874241] [2020-08-21 21:06:33,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:06:33,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:06:33,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365533806] [2020-08-21 21:06:33,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:06:33,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:06:33,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:06:33,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:06:33,237 INFO L87 Difference]: Start difference. First operand 649 states and 843 transitions. Second operand 9 states. [2020-08-21 21:06:33,558 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-21 21:06:36,162 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-21 21:06:36,532 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-21 21:06:38,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:06:38,299 INFO L93 Difference]: Finished difference Result 681 states and 881 transitions. [2020-08-21 21:06:38,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 21:06:38,300 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-08-21 21:06:38,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:06:38,306 INFO L225 Difference]: With dead ends: 681 [2020-08-21 21:06:38,306 INFO L226 Difference]: Without dead ends: 678 [2020-08-21 21:06:38,307 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 [2020-08-21 21:06:38,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2020-08-21 21:06:38,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 648. [2020-08-21 21:06:38,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-08-21 21:06:38,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 841 transitions. [2020-08-21 21:06:38,446 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 841 transitions. Word has length 167 [2020-08-21 21:06:38,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:06:38,447 INFO L479 AbstractCegarLoop]: Abstraction has 648 states and 841 transitions. [2020-08-21 21:06:38,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:06:38,447 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 841 transitions. [2020-08-21 21:06:38,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-08-21 21:06:38,452 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:06:38,452 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] [2020-08-21 21:06:38,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:06:38,452 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:06:38,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:06:38,453 INFO L82 PathProgramCache]: Analyzing trace with hash 632050949, now seen corresponding path program 1 times [2020-08-21 21:06:38,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:06:38,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336840349] [2020-08-21 21:06:38,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:06:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,061 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-21 21:06:39,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:06:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:06:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:06:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 21:06:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 21:06:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 21:06:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 21:06:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 21:06:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-21 21:06:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:39,542 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-08-21 21:06:39,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336840349] [2020-08-21 21:06:39,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:06:39,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:06:39,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092576482] [2020-08-21 21:06:39,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:06:39,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:06:39,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:06:39,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:06:39,544 INFO L87 Difference]: Start difference. First operand 648 states and 841 transitions. Second operand 9 states. [2020-08-21 21:06:39,841 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-21 21:06:44,454 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-21 21:06:44,835 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-21 21:06:46,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:06:46,544 INFO L93 Difference]: Finished difference Result 680 states and 879 transitions. [2020-08-21 21:06:46,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 21:06:46,545 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2020-08-21 21:06:46,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:06:46,551 INFO L225 Difference]: With dead ends: 680 [2020-08-21 21:06:46,551 INFO L226 Difference]: Without dead ends: 677 [2020-08-21 21:06:46,552 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 [2020-08-21 21:06:46,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-21 21:06:46,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 647. [2020-08-21 21:06:46,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-08-21 21:06:46,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 839 transitions. [2020-08-21 21:06:46,626 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 839 transitions. Word has length 168 [2020-08-21 21:06:46,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:06:46,627 INFO L479 AbstractCegarLoop]: Abstraction has 647 states and 839 transitions. [2020-08-21 21:06:46,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:06:46,627 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 839 transitions. [2020-08-21 21:06:46,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-08-21 21:06:46,629 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:06:46,629 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] [2020-08-21 21:06:46,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 21:06:46,630 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:06:46,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:06:46,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1881448785, now seen corresponding path program 1 times [2020-08-21 21:06:46,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:06:46,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104344216] [2020-08-21 21:06:46,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:06:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,122 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-21 21:06:47,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:06:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:06:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:06:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 21:06:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 21:06:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 21:06:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 21:06:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 21:06:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-21 21:06:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:47,720 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-08-21 21:06:47,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104344216] [2020-08-21 21:06:47,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:06:47,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:06:47,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601948021] [2020-08-21 21:06:47,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:06:47,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:06:47,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:06:47,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:06:47,722 INFO L87 Difference]: Start difference. First operand 647 states and 839 transitions. Second operand 9 states. [2020-08-21 21:06:48,036 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-21 21:06:50,528 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-21 21:06:50,905 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-08-21 21:06:52,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:06:52,445 INFO L93 Difference]: Finished difference Result 679 states and 877 transitions. [2020-08-21 21:06:52,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 21:06:52,446 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 169 [2020-08-21 21:06:52,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:06:52,453 INFO L225 Difference]: With dead ends: 679 [2020-08-21 21:06:52,453 INFO L226 Difference]: Without dead ends: 676 [2020-08-21 21:06:52,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-08-21 21:06:52,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2020-08-21 21:06:52,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 646. [2020-08-21 21:06:52,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-08-21 21:06:52,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 837 transitions. [2020-08-21 21:06:52,526 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 837 transitions. Word has length 169 [2020-08-21 21:06:52,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:06:52,528 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 837 transitions. [2020-08-21 21:06:52,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:06:52,528 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 837 transitions. [2020-08-21 21:06:52,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-21 21:06:52,531 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:06:52,531 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] [2020-08-21 21:06:52,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 21:06:52,531 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:06:52,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:06:52,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1804442952, now seen corresponding path program 1 times [2020-08-21 21:06:52,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:06:52,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528632254] [2020-08-21 21:06:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:06:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,020 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-08-21 21:06:53,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:06:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:06:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:06:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 21:06:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 21:06:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 21:06:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 21:06:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 21:06:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-21 21:06:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:06:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:06:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:06:53,446 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-08-21 21:06:53,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528632254] [2020-08-21 21:06:53,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:06:53,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:06:53,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865074890] [2020-08-21 21:06:53,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:06:53,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:06:53,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:06:53,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:06:53,448 INFO L87 Difference]: Start difference. First operand 646 states and 837 transitions. Second operand 9 states. [2020-08-21 21:06:53,718 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-08-21 21:06:55,866 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-08-21 21:06:56,194 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 234