/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:37:01,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:37:01,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:37:01,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:37:01,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:37:01,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:37:01,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:37:01,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:37:01,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:37:01,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:37:01,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:37:01,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:37:01,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:37:01,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:37:01,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:37:01,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:37:01,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:37:01,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:37:01,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:37:01,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:37:01,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:37:01,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:37:01,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:37:01,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:37:01,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:37:01,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:37:01,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:37:01,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:37:01,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:37:01,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:37:01,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:37:01,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:37:01,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:37:01,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:37:01,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:37:01,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:37:01,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:37:01,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:37:01,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:37:01,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:37:01,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:37:01,550 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-09-24 15:37:01,599 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:37:01,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:37:01,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:37:01,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:37:01,602 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:37:01,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:37:01,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:37:01,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:37:01,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:37:01,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:37:01,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:37:01,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:37:01,605 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:37:01,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:37:01,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:37:01,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:37:01,606 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:37:01,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:37:01,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:37:01,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:37:01,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:37:01,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:37:01,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:37:01,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:37:01,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:37:01,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:37:01,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-24 15:37:01,608 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 15:37:02,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:37:02,078 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:37:02,083 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:37:02,084 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:37:02,085 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:37:02,086 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-09-24 15:37:02,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da406a205/17f9b4a511f54125be09a3af4149d9fb/FLAG08cd49e76 [2020-09-24 15:37:02,937 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:37:02,938 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-09-24 15:37:02,958 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da406a205/17f9b4a511f54125be09a3af4149d9fb/FLAG08cd49e76 [2020-09-24 15:37:03,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da406a205/17f9b4a511f54125be09a3af4149d9fb [2020-09-24 15:37:03,132 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:37:03,137 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:37:03,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:37:03,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:37:03,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:37:03,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:37:03" (1/1) ... [2020-09-24 15:37:03,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb5ca15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:37:03, skipping insertion in model container [2020-09-24 15:37:03,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:37:03" (1/1) ... [2020-09-24 15:37:03,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:37:03,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:37:03,679 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1323] [2020-09-24 15:37:03,680 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1324-1325] [2020-09-24 15:37:03,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:37:04,042 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:37:04,146 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1323] [2020-09-24 15:37:04,147 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1324-1325] [2020-09-24 15:37:04,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:37:04,334 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:37:04,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:37:04 WrapperNode [2020-09-24 15:37:04,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:37:04,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:37:04,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:37:04,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:37:04,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:37:04" (1/1) ... [2020-09-24 15:37:04,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:37:04" (1/1) ... [2020-09-24 15:37:04,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:37:04" (1/1) ... [2020-09-24 15:37:04,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:37:04" (1/1) ... [2020-09-24 15:37:04,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:37:04" (1/1) ... [2020-09-24 15:37:04,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:37:04" (1/1) ... [2020-09-24 15:37:04,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:37:04" (1/1) ... [2020-09-24 15:37:04,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:37:04,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:37:04,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:37:04,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:37:04,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:37:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:37:04,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:37:04,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:37:04,597 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-09-24 15:37:04,598 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-09-24 15:37:04,598 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2020-09-24 15:37:04,598 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2020-09-24 15:37:04,598 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-09-24 15:37:04,598 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-09-24 15:37:04,599 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_name [2020-09-24 15:37:04,600 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 15:37:04,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-09-24 15:37:04,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-09-24 15:37:04,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-09-24 15:37:04,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-09-24 15:37:04,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-09-24 15:37:04,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-09-24 15:37:04,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-09-24 15:37:04,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-09-24 15:37:04,604 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2020-09-24 15:37:04,604 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_allocate_port [2020-09-24 15:37:04,604 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_free_port [2020-09-24 15:37:04,604 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_name [2020-09-24 15:37:04,604 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_valid [2020-09-24 15:37:04,605 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_len [2020-09-24 15:37:04,605 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_start [2020-09-24 15:37:04,605 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_valid [2020-09-24 15:37:04,605 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_len [2020-09-24 15:37:04,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_isa_probe [2020-09-24 15:37:04,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_pnp_probe [2020-09-24 15:37:04,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_init [2020-09-24 15:37:04,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_exit [2020-09-24 15:37:04,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:37:04,607 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-09-24 15:37:04,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2020-09-24 15:37:04,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2020-09-24 15:37:04,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2020-09-24 15:37:04,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2020-09-24 15:37:04,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2020-09-24 15:37:04,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2020-09-24 15:37:04,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __gameport_register_port [2020-09-24 15:37:04,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-09-24 15:37:04,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-09-24 15:37:04,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-09-24 15:37:04,608 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_phys [2020-09-24 15:37:04,609 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_unregister_port [2020-09-24 15:37:04,609 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2020-09-24 15:37:04,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-09-24 15:37:04,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-09-24 15:37:04,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_1 [2020-09-24 15:37:04,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2020-09-24 15:37:04,610 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2020-09-24 15:37:04,610 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_get_resource [2020-09-24 15:37:04,610 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_register_driver [2020-09-24 15:37:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_unregister_driver [2020-09-24 15:37:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-09-24 15:37:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2020-09-24 15:37:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-09-24 15:37:04,612 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-24 15:37:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:37:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-09-24 15:37:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-09-24 15:37:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-09-24 15:37:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-09-24 15:37:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 15:37:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-09-24 15:37:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2020-09-24 15:37:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2020-09-24 15:37:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2020-09-24 15:37:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 15:37:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-09-24 15:37:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-09-24 15:37:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-09-24 15:37:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-09-24 15:37:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_name [2020-09-24 15:37:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-09-24 15:37:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2020-09-24 15:37:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-09-24 15:37:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2020-09-24 15:37:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 15:37:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 15:37:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 15:37:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-24 15:37:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 15:37:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 15:37:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-09-24 15:37:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 15:37:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-09-24 15:37:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-24 15:37:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-09-24 15:37:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-09-24 15:37:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-09-24 15:37:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-09-24 15:37:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-09-24 15:37:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2020-09-24 15:37:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2020-09-24 15:37:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure __gameport_register_port [2020-09-24 15:37:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_unregister_port [2020-09-24 15:37:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_phys [2020-09-24 15:37:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_allocate_port [2020-09-24 15:37:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_free_port [2020-09-24 15:37:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_name [2020-09-24 15:37:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_get_resource [2020-09-24 15:37:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_valid [2020-09-24 15:37:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_len [2020-09-24 15:37:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_start [2020-09-24 15:37:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_valid [2020-09-24 15:37:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_len [2020-09-24 15:37:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_register_driver [2020-09-24 15:37:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_unregister_driver [2020-09-24 15:37:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_isa_probe [2020-09-24 15:37:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 15:37:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 15:37:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 15:37:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_pnp_probe [2020-09-24 15:37:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_init [2020-09-24 15:37:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_exit [2020-09-24 15:37:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-09-24 15:37:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-09-24 15:37:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_1 [2020-09-24 15:37:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:37:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2020-09-24 15:37:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2020-09-24 15:37:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2020-09-24 15:37:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2020-09-24 15:37:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2020-09-24 15:37:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2020-09-24 15:37:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 15:37:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 15:37:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:37:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 15:37:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-24 15:37:04,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:37:05,536 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-09-24 15:37:06,433 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:37:06,433 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 15:37:06,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:37:06 BoogieIcfgContainer [2020-09-24 15:37:06,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:37:06,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:37:06,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:37:06,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:37:06,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:37:03" (1/3) ... [2020-09-24 15:37:06,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5120a3fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:37:06, skipping insertion in model container [2020-09-24 15:37:06,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:37:04" (2/3) ... [2020-09-24 15:37:06,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5120a3fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:37:06, skipping insertion in model container [2020-09-24 15:37:06,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:37:06" (3/3) ... [2020-09-24 15:37:06,463 INFO L109 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-09-24 15:37:06,474 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:37:06,485 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:37:06,506 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:37:06,541 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:37:06,541 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:37:06,541 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:37:06,542 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:37:06,542 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:37:06,542 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:37:06,542 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:37:06,542 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:37:06,586 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states. [2020-09-24 15:37:06,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-09-24 15:37:06,628 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:37:06,629 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:37:06,630 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:37:06,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:37:06,638 INFO L82 PathProgramCache]: Analyzing trace with hash 965266846, now seen corresponding path program 1 times [2020-09-24 15:37:06,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:37:06,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468324969] [2020-09-24 15:37:06,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:37:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:07,560 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-24 15:37:07,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:37:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:07,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-09-24 15:37:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:07,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-09-24 15:37:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:07,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-09-24 15:37:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:07,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-24 15:37:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:07,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-09-24 15:37:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:07,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:37:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:07,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2020-09-24 15:37:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:07,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2020-09-24 15:37:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:07,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2020-09-24 15:37:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:07,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2020-09-24 15:37:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:07,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-24 15:37:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:08,359 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-24 15:37:08,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468324969] [2020-09-24 15:37:08,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:37:08,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 15:37:08,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910697740] [2020-09-24 15:37:08,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 15:37:08,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:37:08,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 15:37:08,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:37:08,403 INFO L87 Difference]: Start difference. First operand 921 states. Second operand 6 states. [2020-09-24 15:37:08,726 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-09-24 15:37:12,661 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-09-24 15:37:15,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:37:15,912 INFO L93 Difference]: Finished difference Result 1928 states and 2306 transitions. [2020-09-24 15:37:15,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 15:37:15,915 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 470 [2020-09-24 15:37:15,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:37:15,950 INFO L225 Difference]: With dead ends: 1928 [2020-09-24 15:37:15,950 INFO L226 Difference]: Without dead ends: 1237 [2020-09-24 15:37:15,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:37:15,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2020-09-24 15:37:16,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 847. [2020-09-24 15:37:16,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-09-24 15:37:16,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 923 transitions. [2020-09-24 15:37:16,130 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 923 transitions. Word has length 470 [2020-09-24 15:37:16,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:37:16,132 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 923 transitions. [2020-09-24 15:37:16,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 15:37:16,133 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 923 transitions. [2020-09-24 15:37:16,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2020-09-24 15:37:16,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:37:16,146 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:37:16,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:37:16,147 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:37:16,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:37:16,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1931197204, now seen corresponding path program 1 times [2020-09-24 15:37:16,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:37:16,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733086219] [2020-09-24 15:37:16,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:37:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:16,629 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-24 15:37:16,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:37:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:16,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-09-24 15:37:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:16,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-09-24 15:37:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:16,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-09-24 15:37:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:16,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-24 15:37:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:16,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-09-24 15:37:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:16,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:37:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:16,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2020-09-24 15:37:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:16,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2020-09-24 15:37:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:16,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2020-09-24 15:37:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:16,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-09-24 15:37:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:16,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-09-24 15:37:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:16,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-09-24 15:37:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:16,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2020-09-24 15:37:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:17,336 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-09-24 15:37:17,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733086219] [2020-09-24 15:37:17,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:37:17,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 15:37:17,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815995837] [2020-09-24 15:37:17,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 15:37:17,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:37:17,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 15:37:17,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:37:17,343 INFO L87 Difference]: Start difference. First operand 847 states and 923 transitions. Second operand 7 states. [2020-09-24 15:37:17,640 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-09-24 15:37:20,941 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-09-24 15:37:21,325 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-09-24 15:37:24,713 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-09-24 15:37:25,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:37:25,605 INFO L93 Difference]: Finished difference Result 1886 states and 2254 transitions. [2020-09-24 15:37:25,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 15:37:25,606 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 492 [2020-09-24 15:37:25,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:37:25,616 INFO L225 Difference]: With dead ends: 1886 [2020-09-24 15:37:25,616 INFO L226 Difference]: Without dead ends: 1373 [2020-09-24 15:37:25,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-24 15:37:25,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2020-09-24 15:37:25,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 883. [2020-09-24 15:37:25,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-09-24 15:37:25,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 973 transitions. [2020-09-24 15:37:25,682 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 973 transitions. Word has length 492 [2020-09-24 15:37:25,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:37:25,684 INFO L479 AbstractCegarLoop]: Abstraction has 883 states and 973 transitions. [2020-09-24 15:37:25,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 15:37:25,684 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 973 transitions. [2020-09-24 15:37:25,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2020-09-24 15:37:25,697 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:37:25,697 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:37:25,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:37:25,698 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:37:25,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:37:25,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1164133881, now seen corresponding path program 1 times [2020-09-24 15:37:25,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:37:25,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689525623] [2020-09-24 15:37:25,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:37:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:26,145 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-24 15:37:26,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:37:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:26,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-09-24 15:37:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:26,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-09-24 15:37:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:26,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-09-24 15:37:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:26,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-09-24 15:37:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:26,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:37:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:26,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:37:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:26,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 15:37:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:26,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-09-24 15:37:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:26,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:37:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:26,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:37:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:26,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 15:37:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:26,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2020-09-24 15:37:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:26,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:37:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:26,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:37:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:26,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-24 15:37:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:26,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-09-24 15:37:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:26,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:37:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:26,806 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-09-24 15:37:26,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689525623] [2020-09-24 15:37:26,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:37:26,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 15:37:26,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405072566] [2020-09-24 15:37:26,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 15:37:26,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:37:26,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 15:37:26,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:37:26,809 INFO L87 Difference]: Start difference. First operand 883 states and 973 transitions. Second operand 6 states. [2020-09-24 15:37:27,009 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-09-24 15:37:28,286 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-09-24 15:37:28,508 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-09-24 15:37:34,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:37:34,877 INFO L93 Difference]: Finished difference Result 2409 states and 2886 transitions. [2020-09-24 15:37:34,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 15:37:34,878 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 528 [2020-09-24 15:37:34,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:37:34,895 INFO L225 Difference]: With dead ends: 2409 [2020-09-24 15:37:34,895 INFO L226 Difference]: Without dead ends: 1860 [2020-09-24 15:37:34,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-24 15:37:34,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2020-09-24 15:37:34,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1212. [2020-09-24 15:37:34,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1212 states. [2020-09-24 15:37:34,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1362 transitions. [2020-09-24 15:37:34,988 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1362 transitions. Word has length 528 [2020-09-24 15:37:34,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:37:34,988 INFO L479 AbstractCegarLoop]: Abstraction has 1212 states and 1362 transitions. [2020-09-24 15:37:34,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 15:37:34,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1362 transitions. [2020-09-24 15:37:35,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2020-09-24 15:37:35,009 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:37:35,009 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:37:35,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:37:35,010 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:37:35,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:37:35,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1340064900, now seen corresponding path program 1 times [2020-09-24 15:37:35,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:37:35,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230936896] [2020-09-24 15:37:35,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:37:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:35,414 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-24 15:37:35,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:37:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:35,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-09-24 15:37:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:35,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-09-24 15:37:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:35,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-09-24 15:37:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:35,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-09-24 15:37:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:35,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:37:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:35,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-09-24 15:37:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:35,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:37:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:35,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:37:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:35,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 15:37:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:35,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-09-24 15:37:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:35,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:37:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:35,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:37:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:35,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 15:37:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:35,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2020-09-24 15:37:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:35,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:37:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:35,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:37:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:35,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-24 15:37:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:35,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-09-24 15:37:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:35,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:37:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:36,074 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-09-24 15:37:36,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230936896] [2020-09-24 15:37:36,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:37:36,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 15:37:36,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786907307] [2020-09-24 15:37:36,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 15:37:36,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:37:36,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 15:37:36,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-24 15:37:36,077 INFO L87 Difference]: Start difference. First operand 1212 states and 1362 transitions. Second operand 13 states. [2020-09-24 15:37:36,297 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-09-24 15:37:38,004 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-09-24 15:37:38,549 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-09-24 15:37:38,817 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-09-24 15:37:39,065 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-09-24 15:37:39,343 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-09-24 15:37:39,621 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-09-24 15:37:39,918 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-09-24 15:37:40,192 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-09-24 15:37:40,460 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-09-24 15:37:45,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:37:45,019 INFO L93 Difference]: Finished difference Result 2731 states and 3275 transitions. [2020-09-24 15:37:45,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 15:37:45,020 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 571 [2020-09-24 15:37:45,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:37:45,032 INFO L225 Difference]: With dead ends: 2731 [2020-09-24 15:37:45,032 INFO L226 Difference]: Without dead ends: 1853 [2020-09-24 15:37:45,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2020-09-24 15:37:45,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2020-09-24 15:37:45,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1223. [2020-09-24 15:37:45,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1223 states. [2020-09-24 15:37:45,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1379 transitions. [2020-09-24 15:37:45,130 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1379 transitions. Word has length 571 [2020-09-24 15:37:45,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:37:45,131 INFO L479 AbstractCegarLoop]: Abstraction has 1223 states and 1379 transitions. [2020-09-24 15:37:45,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 15:37:45,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1379 transitions. [2020-09-24 15:37:45,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2020-09-24 15:37:45,138 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:37:45,139 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:37:45,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:37:45,139 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:37:45,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:37:45,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1628244164, now seen corresponding path program 1 times [2020-09-24 15:37:45,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:37:45,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859531273] [2020-09-24 15:37:45,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:37:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:45,515 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-24 15:37:45,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:37:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:45,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-09-24 15:37:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:45,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-09-24 15:37:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:45,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-09-24 15:37:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:45,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-09-24 15:37:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:45,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:37:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:45,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-09-24 15:37:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:45,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:37:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:45,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:37:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:45,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 15:37:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:45,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-09-24 15:37:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:45,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:37:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:45,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:37:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:45,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:37:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:45,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 15:37:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:45,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2020-09-24 15:37:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:45,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:37:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:45,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:37:45,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:45,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:37:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:45,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 15:37:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:45,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-09-24 15:37:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:45,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:37:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:46,261 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-09-24 15:37:46,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859531273] [2020-09-24 15:37:46,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:37:46,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 15:37:46,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120115001] [2020-09-24 15:37:46,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 15:37:46,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:37:46,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 15:37:46,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-24 15:37:46,268 INFO L87 Difference]: Start difference. First operand 1223 states and 1379 transitions. Second operand 12 states. [2020-09-24 15:37:46,446 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-09-24 15:37:49,809 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-09-24 15:37:50,204 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-09-24 15:37:50,617 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-09-24 15:37:50,972 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-09-24 15:37:51,350 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-09-24 15:37:51,770 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-09-24 15:37:52,133 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-09-24 15:37:52,471 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-09-24 15:37:57,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:37:57,066 INFO L93 Difference]: Finished difference Result 2716 states and 3250 transitions. [2020-09-24 15:37:57,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 15:37:57,067 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 587 [2020-09-24 15:37:57,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:37:57,078 INFO L225 Difference]: With dead ends: 2716 [2020-09-24 15:37:57,078 INFO L226 Difference]: Without dead ends: 1827 [2020-09-24 15:37:57,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2020-09-24 15:37:57,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2020-09-24 15:37:57,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1233. [2020-09-24 15:37:57,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1233 states. [2020-09-24 15:37:57,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1389 transitions. [2020-09-24 15:37:57,186 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1389 transitions. Word has length 587 [2020-09-24 15:37:57,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:37:57,187 INFO L479 AbstractCegarLoop]: Abstraction has 1233 states and 1389 transitions. [2020-09-24 15:37:57,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 15:37:57,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1389 transitions. [2020-09-24 15:37:57,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2020-09-24 15:37:57,196 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:37:57,197 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:37:57,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:37:57,197 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:37:57,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:37:57,198 INFO L82 PathProgramCache]: Analyzing trace with hash -635240572, now seen corresponding path program 1 times [2020-09-24 15:37:57,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:37:57,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701905409] [2020-09-24 15:37:57,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:37:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat