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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 00:34:14,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 00:34:14,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 00:34:14,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 00:34:14,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 00:34:14,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 00:34:14,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 00:34:14,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 00:34:14,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 00:34:14,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 00:34:14,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 00:34:14,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 00:34:14,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 00:34:14,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 00:34:14,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 00:34:14,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 00:34:14,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 00:34:14,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 00:34:14,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 00:34:14,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 00:34:14,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 00:34:14,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 00:34:14,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 00:34:14,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 00:34:14,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 00:34:14,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 00:34:14,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 00:34:14,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 00:34:14,237 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 00:34:14,238 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 00:34:14,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 00:34:14,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 00:34:14,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 00:34:14,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 00:34:14,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 00:34:14,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 00:34:14,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 00:34:14,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 00:34:14,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 00:34:14,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 00:34:14,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 00:34:14,245 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 00:34:14,259 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 00:34:14,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 00:34:14,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 00:34:14,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 00:34:14,261 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 00:34:14,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 00:34:14,262 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 00:34:14,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 00:34:14,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 00:34:14,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 00:34:14,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 00:34:14,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 00:34:14,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 00:34:14,263 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 00:34:14,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 00:34:14,263 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 00:34:14,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 00:34:14,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 00:34:14,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 00:34:14,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 00:34:14,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 00:34:14,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 00:34:14,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 00:34:14,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 00:34:14,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 00:34:14,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 00:34:14,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 00:34:14,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 00:34:14,266 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 00:34:14,549 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 00:34:14,561 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 00:34:14,564 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 00:34:14,566 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 00:34:14,566 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 00:34:14,567 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i [2019-10-15 00:34:14,648 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc2eb073a/5a3bf50c2e064c7f904d022dcca68527/FLAG81aa2a817 [2019-10-15 00:34:15,515 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 00:34:15,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i [2019-10-15 00:34:15,553 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc2eb073a/5a3bf50c2e064c7f904d022dcca68527/FLAG81aa2a817 [2019-10-15 00:34:16,016 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc2eb073a/5a3bf50c2e064c7f904d022dcca68527 [2019-10-15 00:34:16,025 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 00:34:16,027 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 00:34:16,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 00:34:16,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 00:34:16,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 00:34:16,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:34:16" (1/1) ... [2019-10-15 00:34:16,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16e60856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:34:16, skipping insertion in model container [2019-10-15 00:34:16,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:34:16" (1/1) ... [2019-10-15 00:34:16,046 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 00:34:16,178 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 00:34:16,843 WARN L1068 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3517] [2019-10-15 00:34:16,844 WARN L1068 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3518-3519] [2019-10-15 00:34:18,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:34:18,461 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 00:34:18,561 WARN L1068 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3517] [2019-10-15 00:34:18,562 WARN L1068 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3518-3519] [2019-10-15 00:34:18,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:34:19,062 INFO L192 MainTranslator]: Completed translation [2019-10-15 00:34:19,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:34:19 WrapperNode [2019-10-15 00:34:19,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 00:34:19,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 00:34:19,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 00:34:19,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 00:34:19,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:34:19" (1/1) ... [2019-10-15 00:34:19,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:34:19" (1/1) ... [2019-10-15 00:34:19,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:34:19" (1/1) ... [2019-10-15 00:34:19,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:34:19" (1/1) ... [2019-10-15 00:34:19,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:34:19" (1/1) ... [2019-10-15 00:34:19,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:34:19" (1/1) ... [2019-10-15 00:34:19,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:34:19" (1/1) ... [2019-10-15 00:34:19,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 00:34:19,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 00:34:19,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 00:34:19,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 00:34:19,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:34:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-10-15 00:34:19,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 00:34:19,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 00:34:19,579 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2019-10-15 00:34:19,579 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2019-10-15 00:34:19,580 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2019-10-15 00:34:19,580 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2019-10-15 00:34:19,580 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-15 00:34:19,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_1 [2019-10-15 00:34:19,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_4 [2019-10-15 00:34:19,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_5 [2019-10-15 00:34:19,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_7 [2019-10-15 00:34:19,582 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2019-10-15 00:34:19,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-15 00:34:19,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kmalloc_12 [2019-10-15 00:34:19,585 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2019-10-15 00:34:19,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kcalloc_14 [2019-10-15 00:34:19,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-15 00:34:19,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-15 00:34:19,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-15 00:34:19,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-15 00:34:19,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-15 00:34:19,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-15 00:34:19,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-15 00:34:19,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-15 00:34:19,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-15 00:34:19,587 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2019-10-15 00:34:19,587 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_assign_page [2019-10-15 00:34:19,588 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2019-10-15 00:34:19,588 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2019-10-15 00:34:19,588 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_buf [2019-10-15 00:34:19,588 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_virt [2019-10-15 00:34:19,589 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_type [2019-10-15 00:34:19,589 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2019-10-15 00:34:19,589 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2019-10-15 00:34:19,589 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2019-10-15 00:34:19,589 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2019-10-15 00:34:19,589 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2019-10-15 00:34:19,590 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2019-10-15 00:34:19,590 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2019-10-15 00:34:19,590 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2019-10-15 00:34:19,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2019-10-15 00:34:19,590 INFO L138 BoogieDeclarations]: Found implementation of procedure testdev_to_usbdev [2019-10-15 00:34:19,590 INFO L138 BoogieDeclarations]: Found implementation of procedure get_endpoints [2019-10-15 00:34:19,590 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_callback [2019-10-15 00:34:19,591 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_alloc_urb [2019-10-15 00:34:19,591 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_alloc_urb [2019-10-15 00:34:19,591 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_fill_buf [2019-10-15 00:34:19,591 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_offset [2019-10-15 00:34:19,591 INFO L138 BoogieDeclarations]: Found implementation of procedure check_guard_bytes [2019-10-15 00:34:19,591 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_check_buf [2019-10-15 00:34:19,592 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_free_urb [2019-10-15 00:34:19,592 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_io [2019-10-15 00:34:19,592 INFO L138 BoogieDeclarations]: Found implementation of procedure free_sglist [2019-10-15 00:34:19,592 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_sglist [2019-10-15 00:34:19,592 INFO L138 BoogieDeclarations]: Found implementation of procedure perform_sglist [2019-10-15 00:34:19,592 INFO L138 BoogieDeclarations]: Found implementation of procedure get_altsetting [2019-10-15 00:34:19,592 INFO L138 BoogieDeclarations]: Found implementation of procedure set_altsetting [2019-10-15 00:34:19,593 INFO L138 BoogieDeclarations]: Found implementation of procedure is_good_config [2019-10-15 00:34:19,593 INFO L138 BoogieDeclarations]: Found implementation of procedure is_good_ext [2019-10-15 00:34:19,594 INFO L138 BoogieDeclarations]: Found implementation of procedure is_good_ss_cap [2019-10-15 00:34:19,595 INFO L138 BoogieDeclarations]: Found implementation of procedure is_good_con_id [2019-10-15 00:34:19,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ch9_postconfig [2019-10-15 00:34:19,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ctrl_complete [2019-10-15 00:34:19,595 INFO L138 BoogieDeclarations]: Found implementation of procedure test_ctrl_queue [2019-10-15 00:34:19,595 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink1_callback [2019-10-15 00:34:19,595 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink1 [2019-10-15 00:34:19,595 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_simple [2019-10-15 00:34:19,596 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_queued_callback [2019-10-15 00:34:19,596 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_queued [2019-10-15 00:34:19,597 INFO L138 BoogieDeclarations]: Found implementation of procedure verify_not_halted [2019-10-15 00:34:19,597 INFO L138 BoogieDeclarations]: Found implementation of procedure verify_halted [2019-10-15 00:34:19,597 INFO L138 BoogieDeclarations]: Found implementation of procedure test_halt [2019-10-15 00:34:19,597 INFO L138 BoogieDeclarations]: Found implementation of procedure halt_simple [2019-10-15 00:34:19,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ctrl_out [2019-10-15 00:34:19,598 INFO L138 BoogieDeclarations]: Found implementation of procedure iso_callback [2019-10-15 00:34:19,599 INFO L138 BoogieDeclarations]: Found implementation of procedure iso_alloc_urb [2019-10-15 00:34:19,599 INFO L138 BoogieDeclarations]: Found implementation of procedure test_iso_queue [2019-10-15 00:34:19,600 INFO L138 BoogieDeclarations]: Found implementation of procedure test_unaligned_bulk [2019-10-15 00:34:19,600 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_ioctl [2019-10-15 00:34:19,600 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_probe [2019-10-15 00:34:19,600 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_suspend [2019-10-15 00:34:19,602 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_resume [2019-10-15 00:34:19,602 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_disconnect [2019-10-15 00:34:19,603 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_init [2019-10-15 00:34:19,603 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_exit [2019-10-15 00:34:19,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2019-10-15 00:34:19,604 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 00:34:19,604 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2019-10-15 00:34:19,604 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2019-10-15 00:34:19,604 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2019-10-15 00:34:19,604 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2019-10-15 00:34:19,605 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-15 00:34:19,605 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2019-10-15 00:34:19,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kmem_cache_alloc_16 [2019-10-15 00:34:19,605 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-15 00:34:19,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_urb_19 [2019-10-15 00:34:19,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_coherent_20 [2019-10-15 00:34:19,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_21 [2019-10-15 00:34:19,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_22 [2019-10-15 00:34:19,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_23 [2019-10-15 00:34:19,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_24 [2019-10-15 00:34:19,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_25 [2019-10-15 00:34:19,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_coherent_26 [2019-10-15 00:34:19,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_urb_27 [2019-10-15 00:34:19,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_28 [2019-10-15 00:34:19,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_29 [2019-10-15 00:34:19,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_urb_30 [2019-10-15 00:34:19,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_coherent_31 [2019-10-15 00:34:19,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_32 [2019-10-15 00:34:19,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_33 [2019-10-15 00:34:19,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_34 [2019-10-15 00:34:19,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2019-10-15 00:34:19,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2019-10-15 00:34:19,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2019-10-15 00:34:19,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2019-10-15 00:34:19,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2019-10-15 00:34:19,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2019-10-15 00:34:19,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2019-10-15 00:34:19,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2019-10-15 00:34:19,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2019-10-15 00:34:19,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2019-10-15 00:34:19,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2019-10-15 00:34:19,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-15 00:34:19,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __virt_addr_valid [2019-10-15 00:34:19,614 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2019-10-15 00:34:19,614 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2019-10-15 00:34:19,614 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irq [2019-10-15 00:34:19,616 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2019-10-15 00:34:19,616 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irq [2019-10-15 00:34:19,616 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2019-10-15 00:34:19,616 INFO L138 BoogieDeclarations]: Found implementation of procedure completion_done [2019-10-15 00:34:19,616 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2019-10-15 00:34:19,618 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2019-10-15 00:34:19,622 INFO L138 BoogieDeclarations]: Found implementation of procedure do_gettimeofday [2019-10-15 00:34:19,622 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2019-10-15 00:34:19,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-15 00:34:19,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-15 00:34:19,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2019-10-15 00:34:19,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2019-10-15 00:34:19,624 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2019-10-15 00:34:19,631 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2019-10-15 00:34:19,631 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2019-10-15 00:34:19,631 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-15 00:34:19,632 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_table [2019-10-15 00:34:19,633 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2019-10-15 00:34:19,633 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2019-10-15 00:34:19,633 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2019-10-15 00:34:19,633 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2019-10-15 00:34:19,633 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-10-15 00:34:19,634 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2019-10-15 00:34:19,634 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2019-10-15 00:34:19,634 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_descriptor [2019-10-15 00:34:19,634 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_status [2019-10-15 00:34:19,634 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2019-10-15 00:34:19,635 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-10-15 00:34:19,635 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2019-10-15 00:34:19,635 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_init [2019-10-15 00:34:19,635 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_wait [2019-10-15 00:34:19,635 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_speed_string [2019-10-15 00:34:19,636 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2019-10-15 00:34:19,636 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2019-10-15 00:34:19,636 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2019-10-15 00:34:19,636 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2019-10-15 00:34:19,636 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-15 00:34:19,637 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-15 00:34:19,637 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-15 00:34:19,637 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-15 00:34:19,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 00:34:19,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-15 00:34:19,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2019-10-15 00:34:19,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2019-10-15 00:34:19,638 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2019-10-15 00:34:19,638 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2019-10-15 00:34:19,638 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2019-10-15 00:34:19,638 INFO L130 BoogieDeclarations]: Found specification of procedure __virt_addr_valid [2019-10-15 00:34:19,638 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-15 00:34:19,638 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2019-10-15 00:34:19,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 00:34:19,639 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2019-10-15 00:34:19,639 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2019-10-15 00:34:19,639 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2019-10-15 00:34:19,639 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-15 00:34:19,639 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2019-10-15 00:34:19,639 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irq [2019-10-15 00:34:19,639 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2019-10-15 00:34:19,640 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irq [2019-10-15 00:34:19,640 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-15 00:34:19,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_1 [2019-10-15 00:34:19,640 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2019-10-15 00:34:19,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_4 [2019-10-15 00:34:19,640 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2019-10-15 00:34:19,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_5 [2019-10-15 00:34:19,641 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2019-10-15 00:34:19,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_7 [2019-10-15 00:34:19,641 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2019-10-15 00:34:19,641 INFO L130 BoogieDeclarations]: Found specification of procedure do_gettimeofday [2019-10-15 00:34:19,641 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2019-10-15 00:34:19,642 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2019-10-15 00:34:19,642 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2019-10-15 00:34:19,642 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-15 00:34:19,642 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2019-10-15 00:34:19,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 00:34:19,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 00:34:19,643 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2019-10-15 00:34:19,643 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2019-10-15 00:34:19,643 INFO L130 BoogieDeclarations]: Found specification of procedure completion_done [2019-10-15 00:34:19,643 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2019-10-15 00:34:19,643 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2019-10-15 00:34:19,644 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-15 00:34:19,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-15 00:34:19,644 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-15 00:34:19,644 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2019-10-15 00:34:19,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kmem_cache_alloc_16 [2019-10-15 00:34:19,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kmalloc_12 [2019-10-15 00:34:19,644 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-15 00:34:19,645 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2019-10-15 00:34:19,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kcalloc_14 [2019-10-15 00:34:19,645 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2019-10-15 00:34:19,645 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-15 00:34:19,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2019-10-15 00:34:19,645 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 00:34:19,645 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 00:34:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 00:34:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-15 00:34:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-15 00:34:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 00:34:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 00:34:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 00:34:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-15 00:34:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-15 00:34:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-15 00:34:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-15 00:34:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-15 00:34:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-15 00:34:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-15 00:34:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-15 00:34:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2019-10-15 00:34:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2019-10-15 00:34:19,648 INFO L130 BoogieDeclarations]: Found specification of procedure sg_assign_page [2019-10-15 00:34:19,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 00:34:19,648 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2019-10-15 00:34:19,648 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2019-10-15 00:34:19,648 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_buf [2019-10-15 00:34:19,648 INFO L130 BoogieDeclarations]: Found specification of procedure sg_virt [2019-10-15 00:34:19,648 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_table [2019-10-15 00:34:19,649 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_type [2019-10-15 00:34:19,649 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2019-10-15 00:34:19,649 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2019-10-15 00:34:19,649 INFO L130 BoogieDeclarations]: Found specification of procedure usb_speed_string [2019-10-15 00:34:19,649 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2019-10-15 00:34:19,649 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2019-10-15 00:34:19,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 00:34:19,650 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2019-10-15 00:34:19,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 00:34:19,650 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2019-10-15 00:34:19,650 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2019-10-15 00:34:19,650 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2019-10-15 00:34:19,650 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2019-10-15 00:34:19,650 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2019-10-15 00:34:19,651 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2019-10-15 00:34:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-10-15 00:34:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_33 [2019-10-15 00:34:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-10-15 00:34:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_34 [2019-10-15 00:34:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2019-10-15 00:34:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2019-10-15 00:34:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_urb_19 [2019-10-15 00:34:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_urb_27 [2019-10-15 00:34:19,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_urb_30 [2019-10-15 00:34:19,660 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2019-10-15 00:34:19,660 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2019-10-15 00:34:19,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_21 [2019-10-15 00:34:19,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_22 [2019-10-15 00:34:19,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_23 [2019-10-15 00:34:19,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_24 [2019-10-15 00:34:19,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_25 [2019-10-15 00:34:19,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_28 [2019-10-15 00:34:19,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_29 [2019-10-15 00:34:19,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_32 [2019-10-15 00:34:19,661 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2019-10-15 00:34:19,661 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2019-10-15 00:34:19,662 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2019-10-15 00:34:19,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_coherent_20 [2019-10-15 00:34:19,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_coherent_26 [2019-10-15 00:34:19,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_coherent_31 [2019-10-15 00:34:19,662 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2019-10-15 00:34:19,662 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2019-10-15 00:34:19,662 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_descriptor [2019-10-15 00:34:19,662 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_status [2019-10-15 00:34:19,663 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2019-10-15 00:34:19,663 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2019-10-15 00:34:19,663 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_init [2019-10-15 00:34:19,663 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_wait [2019-10-15 00:34:19,663 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2019-10-15 00:34:19,663 INFO L130 BoogieDeclarations]: Found specification of procedure testdev_to_usbdev [2019-10-15 00:34:19,663 INFO L130 BoogieDeclarations]: Found specification of procedure get_endpoints [2019-10-15 00:34:19,663 INFO L130 BoogieDeclarations]: Found specification of procedure simple_callback [2019-10-15 00:34:19,663 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_alloc_urb [2019-10-15 00:34:19,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-15 00:34:19,664 INFO L130 BoogieDeclarations]: Found specification of procedure simple_alloc_urb [2019-10-15 00:34:19,664 INFO L130 BoogieDeclarations]: Found specification of procedure simple_fill_buf [2019-10-15 00:34:19,664 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_offset [2019-10-15 00:34:19,664 INFO L130 BoogieDeclarations]: Found specification of procedure check_guard_bytes [2019-10-15 00:34:19,664 INFO L130 BoogieDeclarations]: Found specification of procedure simple_check_buf [2019-10-15 00:34:19,664 INFO L130 BoogieDeclarations]: Found specification of procedure simple_free_urb [2019-10-15 00:34:19,664 INFO L130 BoogieDeclarations]: Found specification of procedure simple_io [2019-10-15 00:34:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure free_sglist [2019-10-15 00:34:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_sglist [2019-10-15 00:34:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure perform_sglist [2019-10-15 00:34:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure get_altsetting [2019-10-15 00:34:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure set_altsetting [2019-10-15 00:34:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure is_good_config [2019-10-15 00:34:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure is_good_ext [2019-10-15 00:34:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure is_good_ss_cap [2019-10-15 00:34:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure is_good_con_id [2019-10-15 00:34:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure ch9_postconfig [2019-10-15 00:34:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure ctrl_complete [2019-10-15 00:34:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure test_ctrl_queue [2019-10-15 00:34:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure unlink1_callback [2019-10-15 00:34:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure unlink1 [2019-10-15 00:34:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_simple [2019-10-15 00:34:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_queued_callback [2019-10-15 00:34:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_queued [2019-10-15 00:34:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure verify_not_halted [2019-10-15 00:34:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure verify_halted [2019-10-15 00:34:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure test_halt [2019-10-15 00:34:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure halt_simple [2019-10-15 00:34:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure ctrl_out [2019-10-15 00:34:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure iso_callback [2019-10-15 00:34:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure iso_alloc_urb [2019-10-15 00:34:19,668 INFO L130 BoogieDeclarations]: Found specification of procedure test_iso_queue [2019-10-15 00:34:19,668 INFO L130 BoogieDeclarations]: Found specification of procedure test_unaligned_bulk [2019-10-15 00:34:19,668 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_ioctl [2019-10-15 00:34:19,668 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_probe [2019-10-15 00:34:19,668 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_suspend [2019-10-15 00:34:19,668 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_resume [2019-10-15 00:34:19,668 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_disconnect [2019-10-15 00:34:19,668 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_init [2019-10-15 00:34:19,669 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_exit [2019-10-15 00:34:19,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-15 00:34:19,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2019-10-15 00:34:19,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-15 00:34:19,669 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 00:34:19,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2019-10-15 00:34:19,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2019-10-15 00:34:19,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2019-10-15 00:34:19,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2019-10-15 00:34:19,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-15 00:34:19,670 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-15 00:34:19,670 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 00:34:19,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 00:34:19,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 00:34:19,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 00:34:19,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 00:34:21,553 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-15 00:34:30,301 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 00:34:30,302 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-15 00:34:30,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:34:30 BoogieIcfgContainer [2019-10-15 00:34:30,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 00:34:30,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 00:34:30,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 00:34:30,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 00:34:30,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:34:16" (1/3) ... [2019-10-15 00:34:30,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f9c1d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:34:30, skipping insertion in model container [2019-10-15 00:34:30,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:34:19" (2/3) ... [2019-10-15 00:34:30,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f9c1d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:34:30, skipping insertion in model container [2019-10-15 00:34:30,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:34:30" (3/3) ... [2019-10-15 00:34:30,313 INFO L109 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i [2019-10-15 00:34:30,324 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 00:34:30,335 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 00:34:30,348 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 00:34:30,387 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 00:34:30,387 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 00:34:30,388 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 00:34:30,388 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 00:34:30,388 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 00:34:30,388 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 00:34:30,388 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 00:34:30,388 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 00:34:30,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states. [2019-10-15 00:34:30,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-15 00:34:30,448 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:34:30,449 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:34:30,452 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:34:30,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:34:30,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1074517858, now seen corresponding path program 1 times [2019-10-15 00:34:30,469 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:34:30,470 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175771216] [2019-10-15 00:34:30,470 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:34:30,470 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:34:30,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:34:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:34:31,432 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 00:34:31,433 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175771216] [2019-10-15 00:34:31,433 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:34:31,434 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 00:34:31,435 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676261320] [2019-10-15 00:34:31,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:34:31,442 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:34:31,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:34:31,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:34:31,461 INFO L87 Difference]: Start difference. First operand 1708 states. Second operand 3 states. [2019-10-15 00:34:32,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:34:32,114 INFO L93 Difference]: Finished difference Result 3170 states and 4469 transitions. [2019-10-15 00:34:32,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:34:32,116 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-10-15 00:34:32,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:34:32,160 INFO L225 Difference]: With dead ends: 3170 [2019-10-15 00:34:32,160 INFO L226 Difference]: Without dead ends: 1572 [2019-10-15 00:34:32,178 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:34:32,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2019-10-15 00:34:32,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1563. [2019-10-15 00:34:32,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2019-10-15 00:34:32,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2160 transitions. [2019-10-15 00:34:32,387 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2160 transitions. Word has length 47 [2019-10-15 00:34:32,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:34:32,388 INFO L462 AbstractCegarLoop]: Abstraction has 1563 states and 2160 transitions. [2019-10-15 00:34:32,388 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:34:32,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2160 transitions. [2019-10-15 00:34:32,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-15 00:34:32,403 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:34:32,404 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:34:32,405 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:34:32,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:34:32,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1002113295, now seen corresponding path program 1 times [2019-10-15 00:34:32,405 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:34:32,405 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890423446] [2019-10-15 00:34:32,406 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:34:32,406 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:34:32,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:34:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:34:32,743 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 00:34:32,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890423446] [2019-10-15 00:34:32,744 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:34:32,744 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 00:34:32,744 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792957267] [2019-10-15 00:34:32,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:34:32,746 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:34:32,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:34:32,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:34:32,747 INFO L87 Difference]: Start difference. First operand 1563 states and 2160 transitions. Second operand 3 states. [2019-10-15 00:34:32,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:34:32,806 INFO L93 Difference]: Finished difference Result 1596 states and 2191 transitions. [2019-10-15 00:34:32,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:34:32,807 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2019-10-15 00:34:32,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:34:32,827 INFO L225 Difference]: With dead ends: 1596 [2019-10-15 00:34:32,827 INFO L226 Difference]: Without dead ends: 1593 [2019-10-15 00:34:32,829 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:34:32,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2019-10-15 00:34:32,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1593. [2019-10-15 00:34:32,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2019-10-15 00:34:32,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 2188 transitions. [2019-10-15 00:34:32,935 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 2188 transitions. Word has length 83 [2019-10-15 00:34:32,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:34:32,936 INFO L462 AbstractCegarLoop]: Abstraction has 1593 states and 2188 transitions. [2019-10-15 00:34:32,936 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:34:32,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 2188 transitions. [2019-10-15 00:34:32,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-15 00:34:32,951 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:34:32,952 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:34:32,952 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:34:32,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:34:32,953 INFO L82 PathProgramCache]: Analyzing trace with hash 418767177, now seen corresponding path program 1 times [2019-10-15 00:34:32,953 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:34:32,954 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465752144] [2019-10-15 00:34:32,954 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:34:32,954 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:34:32,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:34:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:34:33,349 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 00:34:33,349 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465752144] [2019-10-15 00:34:33,351 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:34:33,351 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 00:34:33,352 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849894502] [2019-10-15 00:34:33,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:34:33,354 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:34:33,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:34:33,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:34:33,355 INFO L87 Difference]: Start difference. First operand 1593 states and 2188 transitions. Second operand 3 states. [2019-10-15 00:34:36,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:34:36,040 INFO L93 Difference]: Finished difference Result 3259 states and 4465 transitions. [2019-10-15 00:34:36,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:34:36,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2019-10-15 00:34:36,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:34:36,053 INFO L225 Difference]: With dead ends: 3259 [2019-10-15 00:34:36,053 INFO L226 Difference]: Without dead ends: 1694 [2019-10-15 00:34:36,060 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:34:36,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2019-10-15 00:34:36,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1678. [2019-10-15 00:34:36,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1678 states. [2019-10-15 00:34:36,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 2279 transitions. [2019-10-15 00:34:36,134 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 2279 transitions. Word has length 214 [2019-10-15 00:34:36,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:34:36,134 INFO L462 AbstractCegarLoop]: Abstraction has 1678 states and 2279 transitions. [2019-10-15 00:34:36,134 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:34:36,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 2279 transitions. [2019-10-15 00:34:36,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-10-15 00:34:36,145 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:34:36,146 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:34:36,146 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:34:36,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:34:36,147 INFO L82 PathProgramCache]: Analyzing trace with hash 663044891, now seen corresponding path program 1 times [2019-10-15 00:34:36,147 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:34:36,147 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21126520] [2019-10-15 00:34:36,147 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:34:36,147 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:34:36,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:34:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:34:36,614 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 00:34:36,614 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21126520] [2019-10-15 00:34:36,615 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:34:36,615 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 00:34:36,615 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370808681] [2019-10-15 00:34:36,616 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:34:36,616 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:34:36,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:34:36,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:34:36,617 INFO L87 Difference]: Start difference. First operand 1678 states and 2279 transitions. Second operand 3 states. [2019-10-15 00:34:39,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:34:39,325 INFO L93 Difference]: Finished difference Result 4695 states and 6409 transitions. [2019-10-15 00:34:39,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:34:39,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2019-10-15 00:34:39,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:34:39,347 INFO L225 Difference]: With dead ends: 4695 [2019-10-15 00:34:39,348 INFO L226 Difference]: Without dead ends: 3045 [2019-10-15 00:34:39,356 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:34:39,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2019-10-15 00:34:39,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 3033. [2019-10-15 00:34:39,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3033 states. [2019-10-15 00:34:39,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 4140 transitions. [2019-10-15 00:34:39,486 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 4140 transitions. Word has length 233 [2019-10-15 00:34:39,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:34:39,487 INFO L462 AbstractCegarLoop]: Abstraction has 3033 states and 4140 transitions. [2019-10-15 00:34:39,487 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:34:39,487 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 4140 transitions. [2019-10-15 00:34:39,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-10-15 00:34:39,502 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:34:39,503 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:34:39,503 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:34:39,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:34:39,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1681297157, now seen corresponding path program 1 times [2019-10-15 00:34:39,504 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:34:39,504 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097102699] [2019-10-15 00:34:39,504 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:34:39,504 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:34:39,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:34:39,630 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 00:34:39,630 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [854338324] [2019-10-15 00:34:39,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:34:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:34:41,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 4331 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 00:34:41,180 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:34:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 00:34:41,245 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:34:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 00:34:41,470 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097102699] [2019-10-15 00:34:41,470 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 00:34:41,470 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854338324] [2019-10-15 00:34:41,471 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:34:41,471 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-15 00:34:41,471 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157013417] [2019-10-15 00:34:41,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:34:41,472 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:34:41,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:34:41,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:34:41,473 INFO L87 Difference]: Start difference. First operand 3033 states and 4140 transitions. Second operand 3 states. [2019-10-15 00:34:41,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:34:41,582 INFO L93 Difference]: Finished difference Result 6040 states and 8257 transitions. [2019-10-15 00:34:41,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:34:41,583 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2019-10-15 00:34:41,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:34:41,611 INFO L225 Difference]: With dead ends: 6040 [2019-10-15 00:34:41,611 INFO L226 Difference]: Without dead ends: 3035 [2019-10-15 00:34:41,624 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:34:41,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2019-10-15 00:34:41,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 3035. [2019-10-15 00:34:41,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3035 states. [2019-10-15 00:34:41,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3035 states to 3035 states and 4142 transitions. [2019-10-15 00:34:41,752 INFO L78 Accepts]: Start accepts. Automaton has 3035 states and 4142 transitions. Word has length 235 [2019-10-15 00:34:41,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:34:41,754 INFO L462 AbstractCegarLoop]: Abstraction has 3035 states and 4142 transitions. [2019-10-15 00:34:41,754 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:34:41,754 INFO L276 IsEmpty]: Start isEmpty. Operand 3035 states and 4142 transitions. [2019-10-15 00:34:41,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-10-15 00:34:41,773 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:34:41,773 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:34:41,988 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:34:41,989 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:34:41,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:34:41,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1214244191, now seen corresponding path program 1 times [2019-10-15 00:34:41,990 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:34:41,990 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138283714] [2019-10-15 00:34:41,990 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:34:41,990 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:34:41,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:34:42,141 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 00:34:42,141 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [682451007] [2019-10-15 00:34:42,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:34:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:34:43,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 4324 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 00:34:43,762 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:34:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 00:34:43,819 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:34:43,975 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 00:34:43,975 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138283714] [2019-10-15 00:34:43,975 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 00:34:43,976 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682451007] [2019-10-15 00:34:43,976 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:34:43,976 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-15 00:34:43,976 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270771254] [2019-10-15 00:34:43,977 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:34:43,977 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:34:43,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:34:43,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:34:43,978 INFO L87 Difference]: Start difference. First operand 3035 states and 4142 transitions. Second operand 3 states. [2019-10-15 00:34:44,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:34:44,078 INFO L93 Difference]: Finished difference Result 6044 states and 8259 transitions. [2019-10-15 00:34:44,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:34:44,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 234 [2019-10-15 00:34:44,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:34:44,099 INFO L225 Difference]: With dead ends: 6044 [2019-10-15 00:34:44,099 INFO L226 Difference]: Without dead ends: 3037 [2019-10-15 00:34:44,112 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:34:44,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3037 states. [2019-10-15 00:34:44,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3037 to 3037. [2019-10-15 00:34:44,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3037 states. [2019-10-15 00:34:44,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 4144 transitions. [2019-10-15 00:34:44,225 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 4144 transitions. Word has length 234 [2019-10-15 00:34:44,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:34:44,226 INFO L462 AbstractCegarLoop]: Abstraction has 3037 states and 4144 transitions. [2019-10-15 00:34:44,226 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:34:44,226 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 4144 transitions. [2019-10-15 00:34:44,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2019-10-15 00:34:44,240 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:34:44,240 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:34:44,453 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:34:44,454 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:34:44,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:34:44,454 INFO L82 PathProgramCache]: Analyzing trace with hash -289650275, now seen corresponding path program 1 times [2019-10-15 00:34:44,454 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:34:44,455 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36635299] [2019-10-15 00:34:44,455 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:34:44,455 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:34:44,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:34:44,567 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 00:34:44,567 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430893463] [2019-10-15 00:34:44,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:34:46,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:34:46,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 4312 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 00:34:46,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:34:46,921 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 00:34:46,921 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:34:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 00:34:47,063 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36635299] [2019-10-15 00:34:47,063 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 00:34:47,063 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430893463] [2019-10-15 00:34:47,063 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:34:47,063 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-15 00:34:47,064 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547394204] [2019-10-15 00:34:47,065 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:34:47,065 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:34:47,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:34:47,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:34:47,066 INFO L87 Difference]: Start difference. First operand 3037 states and 4144 transitions. Second operand 3 states. [2019-10-15 00:34:47,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:34:47,148 INFO L93 Difference]: Finished difference Result 6048 states and 8263 transitions. [2019-10-15 00:34:47,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:34:47,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 228 [2019-10-15 00:34:47,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:34:47,168 INFO L225 Difference]: With dead ends: 6048 [2019-10-15 00:34:47,168 INFO L226 Difference]: Without dead ends: 3039 [2019-10-15 00:34:47,179 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:34:47,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3039 states. [2019-10-15 00:34:47,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3039 to 3039. [2019-10-15 00:34:47,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3039 states. [2019-10-15 00:34:47,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3039 states to 3039 states and 4146 transitions. [2019-10-15 00:34:47,283 INFO L78 Accepts]: Start accepts. Automaton has 3039 states and 4146 transitions. Word has length 228 [2019-10-15 00:34:47,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:34:47,284 INFO L462 AbstractCegarLoop]: Abstraction has 3039 states and 4146 transitions. [2019-10-15 00:34:47,284 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:34:47,284 INFO L276 IsEmpty]: Start isEmpty. Operand 3039 states and 4146 transitions. [2019-10-15 00:34:47,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-10-15 00:34:47,298 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:34:47,298 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:34:47,511 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:34:47,512 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:34:47,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:34:47,512 INFO L82 PathProgramCache]: Analyzing trace with hash 734539193, now seen corresponding path program 1 times [2019-10-15 00:34:47,513 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:34:47,513 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284738065] [2019-10-15 00:34:47,513 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:34:47,513 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:34:47,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:34:47,615 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 00:34:47,615 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1435368936] [2019-10-15 00:34:47,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:34:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:34:49,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 4336 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 00:34:49,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:34:49,295 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 00:34:49,296 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:34:49,483 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 00:34:49,484 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284738065] [2019-10-15 00:34:49,484 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 00:34:49,484 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435368936] [2019-10-15 00:34:49,484 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:34:49,485 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-15 00:34:49,485 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876242258] [2019-10-15 00:34:49,486 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 00:34:49,486 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:34:49,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 00:34:49,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-15 00:34:49,487 INFO L87 Difference]: Start difference. First operand 3039 states and 4146 transitions. Second operand 6 states.