/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:37:57,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:37:57,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:37:57,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:37:57,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:37:57,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:37:57,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:37:57,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:37:57,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:37:57,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:37:57,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:37:57,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:37:57,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:37:57,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:37:57,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:37:57,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:37:57,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:37:57,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:37:57,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:37:57,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:37:57,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:37:57,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:37:57,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:37:57,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:37:57,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:37:57,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:37:57,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:37:57,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:37:57,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:37:57,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:37:57,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:37:57,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:37:57,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:37:57,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:37:57,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:37:57,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:37:57,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:37:57,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:37:57,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:37:57,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:37:57,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:37:57,436 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 [2020-09-24 15:37:57,495 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:37:57,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:37:57,498 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:37:57,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:37:57,498 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:37:57,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:37:57,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:37:57,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:37:57,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:37:57,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:37:57,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:37:57,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:37:57,501 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:37:57,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:37:57,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:37:57,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:37:57,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:37:57,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:37:57,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:37:57,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:37:57,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:37:57,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:37:57,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:37:57,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:37:57,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:37:57,505 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:37:57,505 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-24 15:37:57,505 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 15:37:58,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:37:58,039 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:37:58,044 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:37:58,047 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:37:58,048 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:37:58,049 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2020-09-24 15:37:58,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/532af7492/e355b6a70b2240afadef156fe7a5a534/FLAGcb2620d15 [2020-09-24 15:37:59,173 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:37:59,174 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2020-09-24 15:37:59,222 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/532af7492/e355b6a70b2240afadef156fe7a5a534/FLAGcb2620d15 [2020-09-24 15:37:59,619 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/532af7492/e355b6a70b2240afadef156fe7a5a534 [2020-09-24 15:37:59,632 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:37:59,639 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:37:59,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:37:59,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:37:59,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:37:59,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:37:59" (1/1) ... [2020-09-24 15:37:59,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bdd1826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:37:59, skipping insertion in model container [2020-09-24 15:37:59,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:37:59" (1/1) ... [2020-09-24 15:37:59,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:37:59,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:38:01,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:38:01,359 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:38:01,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:38:01,768 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:38:01,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:38:01 WrapperNode [2020-09-24 15:38:01,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:38:01,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:38:01,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:38:01,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:38:01,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:38:01" (1/1) ... [2020-09-24 15:38:01,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:38:01" (1/1) ... [2020-09-24 15:38:01,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:38:01" (1/1) ... [2020-09-24 15:38:01,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:38:01" (1/1) ... [2020-09-24 15:38:01,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:38:01" (1/1) ... [2020-09-24 15:38:01,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:38:01" (1/1) ... [2020-09-24 15:38:01,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:38:01" (1/1) ... [2020-09-24 15:38:02,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:38:02,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:38:02,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:38:02,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:38:02,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:38:01" (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 [2020-09-24 15:38:02,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:38:02,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:38:02,110 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 15:38:02,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-09-24 15:38:02,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-09-24 15:38:02,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2020-09-24 15:38:02,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2020-09-24 15:38:02,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-09-24 15:38:02,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-09-24 15:38:02,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-09-24 15:38:02,113 INFO L138 BoogieDeclarations]: Found implementation of procedure always_connected [2020-09-24 15:38:02,113 INFO L138 BoogieDeclarations]: Found implementation of procedure m5632_recover [2020-09-24 15:38:02,114 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_prereset [2020-09-24 15:38:02,114 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_postreset [2020-09-24 15:38:02,115 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_subset_driver_init [2020-09-24 15:38:02,115 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_subset_driver_exit [2020-09-24 15:38:02,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2020-09-24 15:38:02,117 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:38:02,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_5 [2020-09-24 15:38:02,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_6 [2020-09-24 15:38:02,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_7 [2020-09-24 15:38:02,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_8 [2020-09-24 15:38:02,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_9 [2020-09-24 15:38:02,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_10 [2020-09-24 15:38:02,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_11 [2020-09-24 15:38:02,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_12 [2020-09-24 15:38:02,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___ldv_usb_unlock_device_13 [2020-09-24 15:38:02,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_14 [2020-09-24 15:38:02,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_15 [2020-09-24 15:38:02,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-09-24 15:38:02,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2020-09-24 15:38:02,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-09-24 15:38:02,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-09-24 15:38:02,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-09-24 15:38:02,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-09-24 15:38:02,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_i_mutex_of_inode [2020-09-24 15:38:02,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_i_mutex_of_inode [2020-09-24 15:38:02,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_i_mutex_of_inode [2020-09-24 15:38:02,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_i_mutex_of_inode [2020-09-24 15:38:02,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2020-09-24 15:38:02,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_i_mutex_of_inode [2020-09-24 15:38:02,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_i_mutex_of_inode [2020-09-24 15:38:02,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_i_mutex_of_inode [2020-09-24 15:38:02,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_i_mutex_of_inode [2020-09-24 15:38:02,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_i_mutex_of_inode [2020-09-24 15:38:02,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_i_mutex_of_inode [2020-09-24 15:38:02,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock [2020-09-24 15:38:02,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_lock [2020-09-24 15:38:02,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock [2020-09-24 15:38:02,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_lock [2020-09-24 15:38:02,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_lock [2020-09-24 15:38:02,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_lock [2020-09-24 15:38:02,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock [2020-09-24 15:38:02,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_lock [2020-09-24 15:38:02,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_lock [2020-09-24 15:38:02,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_lock [2020-09-24 15:38:02,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_lock [2020-09-24 15:38:02,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_device [2020-09-24 15:38:02,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_mutex_of_device [2020-09-24 15:38:02,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_device [2020-09-24 15:38:02,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of_device [2020-09-24 15:38:02,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2020-09-24 15:38:02,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_mutex_of_device [2020-09-24 15:38:02,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_device [2020-09-24 15:38:02,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_mutex_of_device [2020-09-24 15:38:02,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_mutex_of_device [2020-09-24 15:38:02,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_mutex_of_device [2020-09-24 15:38:02,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_mutex_of_device [2020-09-24 15:38:02,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_udev [2020-09-24 15:38:02,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_udev [2020-09-24 15:38:02,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2020-09-24 15:38:02,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_udev [2020-09-24 15:38:02,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_udev [2020-09-24 15:38:02,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_udev [2020-09-24 15:38:02,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_udev [2020-09-24 15:38:02,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_udev [2020-09-24 15:38:02,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_udev [2020-09-24 15:38:02,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_udev [2020-09-24 15:38:02,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_udev [2020-09-24 15:38:02,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-09-24 15:38:02,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_usb_unlock_device [2020-09-24 15:38:02,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-09-24 15:38:02,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2020-09-24 15:38:02,132 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-09-24 15:38:02,132 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2020-09-24 15:38:02,133 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-09-24 15:38:02,133 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-09-24 15:38:02,133 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-09-24 15:38:02,134 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2020-09-24 15:38:02,134 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2020-09-24 15:38:02,134 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2020-09-24 15:38:02,134 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2020-09-24 15:38:02,134 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2020-09-24 15:38:02,134 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-09-24 15:38:02,135 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-09-24 15:38:02,135 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-24 15:38:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:38:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-09-24 15:38:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2020-09-24 15:38:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_8 [2020-09-24 15:38:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-09-24 15:38:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_6 [2020-09-24 15:38:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_9 [2020-09-24 15:38:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_10 [2020-09-24 15:38:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 15:38:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 15:38:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 15:38:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-24 15:38:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 15:38:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 15:38:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-09-24 15:38:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 15:38:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-09-24 15:38:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-24 15:38:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2020-09-24 15:38:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2020-09-24 15:38:02,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-09-24 15:38:02,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-09-24 15:38:02,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-09-24 15:38:02,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-09-24 15:38:02,139 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_usb_unlock_device [2020-09-24 15:38:02,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___ldv_usb_unlock_device_13 [2020-09-24 15:38:02,140 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-09-24 15:38:02,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_5 [2020-09-24 15:38:02,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_7 [2020-09-24 15:38:02,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_11 [2020-09-24 15:38:02,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_i_mutex_of_inode [2020-09-24 15:38:02,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_i_mutex_of_inode [2020-09-24 15:38:02,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock [2020-09-24 15:38:02,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock [2020-09-24 15:38:02,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_device [2020-09-24 15:38:02,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of_device [2020-09-24 15:38:02,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_device [2020-09-24 15:38:02,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_udev [2020-09-24 15:38:02,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_udev [2020-09-24 15:38:02,147 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2020-09-24 15:38:02,147 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_12 [2020-09-24 15:38:02,147 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2020-09-24 15:38:02,147 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-09-24 15:38:02,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_14 [2020-09-24 15:38:02,148 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-09-24 15:38:02,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_15 [2020-09-24 15:38:02,149 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2020-09-24 15:38:02,149 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2020-09-24 15:38:02,149 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2020-09-24 15:38:02,156 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2020-09-24 15:38:02,157 INFO L130 BoogieDeclarations]: Found specification of procedure always_connected [2020-09-24 15:38:02,157 INFO L130 BoogieDeclarations]: Found specification of procedure m5632_recover [2020-09-24 15:38:02,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 15:38:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 15:38:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_prereset [2020-09-24 15:38:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_postreset [2020-09-24 15:38:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_subset_driver_init [2020-09-24 15:38:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_subset_driver_exit [2020-09-24 15:38:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-09-24 15:38:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2020-09-24 15:38:02,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-09-24 15:38:02,159 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:38:02,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 15:38:02,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 15:38:02,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-09-24 15:38:02,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2020-09-24 15:38:02,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-09-24 15:38:02,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-09-24 15:38:02,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-09-24 15:38:02,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-09-24 15:38:02,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_i_mutex_of_inode [2020-09-24 15:38:02,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_i_mutex_of_inode [2020-09-24 15:38:02,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_i_mutex_of_inode [2020-09-24 15:38:02,161 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2020-09-24 15:38:02,161 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_i_mutex_of_inode [2020-09-24 15:38:02,161 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_i_mutex_of_inode [2020-09-24 15:38:02,161 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_i_mutex_of_inode [2020-09-24 15:38:02,161 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_i_mutex_of_inode [2020-09-24 15:38:02,161 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_i_mutex_of_inode [2020-09-24 15:38:02,161 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock [2020-09-24 15:38:02,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_lock [2020-09-24 15:38:02,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_lock [2020-09-24 15:38:02,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_lock [2020-09-24 15:38:02,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_lock [2020-09-24 15:38:02,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_lock [2020-09-24 15:38:02,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_lock [2020-09-24 15:38:02,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_lock [2020-09-24 15:38:02,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_lock [2020-09-24 15:38:02,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_device [2020-09-24 15:38:02,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_mutex_of_device [2020-09-24 15:38:02,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2020-09-24 15:38:02,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_mutex_of_device [2020-09-24 15:38:02,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_mutex_of_device [2020-09-24 15:38:02,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_mutex_of_device [2020-09-24 15:38:02,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_mutex_of_device [2020-09-24 15:38:02,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_mutex_of_device [2020-09-24 15:38:02,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_udev [2020-09-24 15:38:02,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_udev [2020-09-24 15:38:02,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2020-09-24 15:38:02,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_udev [2020-09-24 15:38:02,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_udev [2020-09-24 15:38:02,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_udev [2020-09-24 15:38:02,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_udev [2020-09-24 15:38:02,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_udev [2020-09-24 15:38:02,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_udev [2020-09-24 15:38:02,166 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 15:38:02,166 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-09-24 15:38:02,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:38:02,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 15:38:02,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-24 15:38:02,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:38:02,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 15:38:02,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 15:38:03,063 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-09-24 15:38:05,082 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:38:05,082 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 15:38:05,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:38:05 BoogieIcfgContainer [2020-09-24 15:38:05,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:38:05,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:38:05,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:38:05,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:38:05,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:37:59" (1/3) ... [2020-09-24 15:38:05,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa45f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:38:05, skipping insertion in model container [2020-09-24 15:38:05,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:38:01" (2/3) ... [2020-09-24 15:38:05,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa45f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:38:05, skipping insertion in model container [2020-09-24 15:38:05,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:38:05" (3/3) ... [2020-09-24 15:38:05,111 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2020-09-24 15:38:05,123 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:38:05,139 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:38:05,160 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:38:05,197 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:38:05,198 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:38:05,198 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:38:05,198 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:38:05,198 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:38:05,198 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:38:05,198 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:38:05,198 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:38:05,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states. [2020-09-24 15:38:05,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2020-09-24 15:38:05,303 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:38:05,305 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:38:05,306 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:38:05,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:38:05,315 INFO L82 PathProgramCache]: Analyzing trace with hash 942058458, now seen corresponding path program 1 times [2020-09-24 15:38:05,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:38:05,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079151936] [2020-09-24 15:38:05,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:38:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:07,514 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-09-24 15:38:07,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:38:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:08,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-09-24 15:38:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:08,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:08,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:08,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 679 [2020-09-24 15:38:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:08,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:08,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:08,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2020-09-24 15:38:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:08,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:08,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:08,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2020-09-24 15:38:08,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:08,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:08,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:08,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 745 [2020-09-24 15:38:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:08,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:08,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:08,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:08,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 767 [2020-09-24 15:38:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:08,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:08,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:08,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 789 [2020-09-24 15:38:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:08,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-09-24 15:38:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:09,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:09,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 834 [2020-09-24 15:38:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:09,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:38:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:09,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 15:38:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:10,168 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-09-24 15:38:10,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079151936] [2020-09-24 15:38:10,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:38:10,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 15:38:10,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750577598] [2020-09-24 15:38:10,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 15:38:10,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:38:10,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 15:38:10,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:38:10,205 INFO L87 Difference]: Start difference. First operand 1443 states. Second operand 8 states. [2020-09-24 15:38:10,721 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-09-24 15:38:16,801 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-09-24 15:38:18,512 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-09-24 15:38:21,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:38:21,228 INFO L93 Difference]: Finished difference Result 1915 states and 2170 transitions. [2020-09-24 15:38:21,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 15:38:21,231 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 851 [2020-09-24 15:38:21,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:38:21,269 INFO L225 Difference]: With dead ends: 1915 [2020-09-24 15:38:21,270 INFO L226 Difference]: Without dead ends: 1434 [2020-09-24 15:38:21,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-09-24 15:38:21,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2020-09-24 15:38:21,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1384. [2020-09-24 15:38:21,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1384 states. [2020-09-24 15:38:21,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 1494 transitions. [2020-09-24 15:38:21,510 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 1494 transitions. Word has length 851 [2020-09-24 15:38:21,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:38:21,513 INFO L479 AbstractCegarLoop]: Abstraction has 1384 states and 1494 transitions. [2020-09-24 15:38:21,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 15:38:21,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 1494 transitions. [2020-09-24 15:38:21,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2020-09-24 15:38:21,545 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:38:21,546 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:38:21,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:38:21,546 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:38:21,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:38:21,547 INFO L82 PathProgramCache]: Analyzing trace with hash -681597641, now seen corresponding path program 1 times [2020-09-24 15:38:21,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:38:21,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693707385] [2020-09-24 15:38:21,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:38:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:22,731 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-09-24 15:38:22,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:38:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:23,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-09-24 15:38:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:23,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:23,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:23,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 679 [2020-09-24 15:38:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:23,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:23,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:23,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2020-09-24 15:38:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:23,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:23,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:23,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2020-09-24 15:38:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:23,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:23,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:23,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 745 [2020-09-24 15:38:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:23,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:23,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:23,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 767 [2020-09-24 15:38:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:23,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:23,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:23,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 789 [2020-09-24 15:38:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:23,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-09-24 15:38:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:23,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:23,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 846 [2020-09-24 15:38:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:24,444 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-09-24 15:38:24,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693707385] [2020-09-24 15:38:24,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:38:24,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 15:38:24,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835869013] [2020-09-24 15:38:24,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 15:38:24,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:38:24,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 15:38:24,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:38:24,451 INFO L87 Difference]: Start difference. First operand 1384 states and 1494 transitions. Second operand 7 states. [2020-09-24 15:38:24,917 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-09-24 15:38:29,018 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-09-24 15:38:29,615 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-09-24 15:38:33,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:38:33,486 INFO L93 Difference]: Finished difference Result 2530 states and 2840 transitions. [2020-09-24 15:38:33,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 15:38:33,487 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 863 [2020-09-24 15:38:33,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:38:33,498 INFO L225 Difference]: With dead ends: 2530 [2020-09-24 15:38:33,499 INFO L226 Difference]: Without dead ends: 1875 [2020-09-24 15:38:33,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-24 15:38:33,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2020-09-24 15:38:33,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1799. [2020-09-24 15:38:33,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1799 states. [2020-09-24 15:38:33,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 1994 transitions. [2020-09-24 15:38:33,634 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 1994 transitions. Word has length 863 [2020-09-24 15:38:33,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:38:33,636 INFO L479 AbstractCegarLoop]: Abstraction has 1799 states and 1994 transitions. [2020-09-24 15:38:33,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 15:38:33,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 1994 transitions. [2020-09-24 15:38:33,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 905 [2020-09-24 15:38:33,647 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:38:33,648 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:38:33,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:38:33,649 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:38:33,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:38:33,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1990549322, now seen corresponding path program 1 times [2020-09-24 15:38:33,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:38:33,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829646129] [2020-09-24 15:38:33,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:38:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:35,043 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-09-24 15:38:35,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:38:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:35,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-09-24 15:38:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:35,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:35,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:35,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 679 [2020-09-24 15:38:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:36,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:36,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:36,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2020-09-24 15:38:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:36,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:36,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:36,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2020-09-24 15:38:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:36,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:36,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:36,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 745 [2020-09-24 15:38:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:36,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:36,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:36,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 767 [2020-09-24 15:38:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:36,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:36,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:36,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 789 [2020-09-24 15:38:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:36,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-09-24 15:38:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:36,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:36,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 836 [2020-09-24 15:38:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:36,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 15:38:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:36,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:38:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:36,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-24 15:38:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:36,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 15:38:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:36,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:36,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:37,352 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2020-09-24 15:38:37,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829646129] [2020-09-24 15:38:37,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:38:37,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 15:38:37,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913118204] [2020-09-24 15:38:37,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 15:38:37,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:38:37,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 15:38:37,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-24 15:38:37,355 INFO L87 Difference]: Start difference. First operand 1799 states and 1994 transitions. Second operand 9 states. [2020-09-24 15:38:37,866 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-09-24 15:38:42,235 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-09-24 15:38:42,851 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-09-24 15:38:45,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:38:45,435 INFO L93 Difference]: Finished difference Result 1846 states and 2047 transitions. [2020-09-24 15:38:45,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 15:38:45,436 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 904 [2020-09-24 15:38:45,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:38:45,447 INFO L225 Difference]: With dead ends: 1846 [2020-09-24 15:38:45,448 INFO L226 Difference]: Without dead ends: 1843 [2020-09-24 15:38:45,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-09-24 15:38:45,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2020-09-24 15:38:45,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1798. [2020-09-24 15:38:45,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1798 states. [2020-09-24 15:38:45,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 1992 transitions. [2020-09-24 15:38:45,552 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 1992 transitions. Word has length 904 [2020-09-24 15:38:45,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:38:45,554 INFO L479 AbstractCegarLoop]: Abstraction has 1798 states and 1992 transitions. [2020-09-24 15:38:45,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 15:38:45,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 1992 transitions. [2020-09-24 15:38:45,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 906 [2020-09-24 15:38:45,565 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:38:45,566 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:38:45,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:38:45,566 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:38:45,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:38:45,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1577298251, now seen corresponding path program 1 times [2020-09-24 15:38:45,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:38:45,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683947708] [2020-09-24 15:38:45,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:38:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:47,022 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-09-24 15:38:47,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:38:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:47,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-09-24 15:38:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:47,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:47,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:47,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 679 [2020-09-24 15:38:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:47,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:47,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:47,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2020-09-24 15:38:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:47,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:47,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:47,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2020-09-24 15:38:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:47,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:47,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:47,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 745 [2020-09-24 15:38:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:47,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:47,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:47,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 767 [2020-09-24 15:38:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:47,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:47,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:47,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:47,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 789 [2020-09-24 15:38:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:48,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-09-24 15:38:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:48,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:48,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 836 [2020-09-24 15:38:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:48,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 15:38:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:48,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:38:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:48,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-24 15:38:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:48,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 15:38:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:48,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:38:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:48,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:38:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:38:48,963 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2020-09-24 15:38:48,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683947708] [2020-09-24 15:38:48,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:38:48,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 15:38:48,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106602381] [2020-09-24 15:38:48,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 15:38:48,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:38:48,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 15:38:48,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-24 15:38:48,966 INFO L87 Difference]: Start difference. First operand 1798 states and 1992 transitions. Second operand 9 states. [2020-09-24 15:38:49,457 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 241