/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -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 0.1.25-5644d1e-m [2020-08-18 12:39:37,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:39:37,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:39:37,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:39:37,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:39:37,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:39:37,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:39:37,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:39:37,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:39:37,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:39:37,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:39:37,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:39:37,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:39:37,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:39:37,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:39:37,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:39:37,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:39:37,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:39:37,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:39:37,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:39:37,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:39:37,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:39:37,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:39:37,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:39:37,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 12:39:37,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 12:39:37,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 12:39:37,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 12:39:37,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 12:39:37,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 12:39:37,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 12:39:37,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 12:39:37,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 12:39:37,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 12:39:37,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 12:39:37,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 12:39:37,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 12:39:37,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 12:39:37,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:39:37,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:39:37,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:39:37,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-18 12:39:37,561 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:39:37,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:39:37,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:39:37,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:39:37,563 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:39:37,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:39:37,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:39:37,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:39:37,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:39:37,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:39:37,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:39:37,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:39:37,570 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:39:37,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:39:37,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:39:37,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:39:37,571 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:39:37,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:39:37,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:39:37,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:39:37,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:39:37,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:39:37,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:39:37,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:39:37,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:39:37,574 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:39:37,574 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 12:39:37,574 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 12:39:37,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:39:37,927 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:39:37,931 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:39:37,932 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:39:37,933 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:39:37,934 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-18 12:39:38,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77e9ad4ba/15b1b7c506cd4adaa473fe8cab19a21d/FLAG0bd0b8d89 [2020-08-18 12:39:38,569 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:39:38,572 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-18 12:39:38,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77e9ad4ba/15b1b7c506cd4adaa473fe8cab19a21d/FLAG0bd0b8d89 [2020-08-18 12:39:38,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77e9ad4ba/15b1b7c506cd4adaa473fe8cab19a21d [2020-08-18 12:39:38,778 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:39:38,779 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:39:38,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:39:38,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:39:38,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:39:38,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:39:38" (1/1) ... [2020-08-18 12:39:38,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5de3d5d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:38, skipping insertion in model container [2020-08-18 12:39:38,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:39:38" (1/1) ... [2020-08-18 12:39:38,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:39:38,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:39:39,272 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1323] [2020-08-18 12:39:39,273 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] [2020-08-18 12:39:39,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:39:39,580 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:39:39,673 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1323] [2020-08-18 12:39:39,674 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] [2020-08-18 12:39:39,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:39:39,821 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:39:39,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:39 WrapperNode [2020-08-18 12:39:39,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:39:39,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:39:39,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:39:39,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:39:39,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:39" (1/1) ... [2020-08-18 12:39:39,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:39" (1/1) ... [2020-08-18 12:39:39,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:39" (1/1) ... [2020-08-18 12:39:39,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:39" (1/1) ... [2020-08-18 12:39:39,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:39" (1/1) ... [2020-08-18 12:39:39,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:39" (1/1) ... [2020-08-18 12:39:39,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:39" (1/1) ... [2020-08-18 12:39:40,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:39:40,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:39:40,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:39:40,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:39:40,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:39:40,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:39:40,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:39:40,081 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-08-18 12:39:40,081 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-18 12:39:40,081 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2020-08-18 12:39:40,081 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2020-08-18 12:39:40,082 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-18 12:39:40,082 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-18 12:39:40,082 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_name [2020-08-18 12:39:40,082 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 12:39:40,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 12:39:40,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 12:39:40,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 12:39:40,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 12:39:40,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 12:39:40,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 12:39:40,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 12:39:40,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 12:39:40,084 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2020-08-18 12:39:40,084 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_allocate_port [2020-08-18 12:39:40,085 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_free_port [2020-08-18 12:39:40,085 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_name [2020-08-18 12:39:40,085 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_valid [2020-08-18 12:39:40,085 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_len [2020-08-18 12:39:40,085 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_start [2020-08-18 12:39:40,086 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_valid [2020-08-18 12:39:40,086 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_len [2020-08-18 12:39:40,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_isa_probe [2020-08-18 12:39:40,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_pnp_probe [2020-08-18 12:39:40,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_init [2020-08-18 12:39:40,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_exit [2020-08-18 12:39:40,087 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:39:40,087 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-18 12:39:40,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2020-08-18 12:39:40,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-18 12:39:40,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2020-08-18 12:39:40,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2020-08-18 12:39:40,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2020-08-18 12:39:40,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2020-08-18 12:39:40,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __gameport_register_port [2020-08-18 12:39:40,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-18 12:39:40,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-08-18 12:39:40,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-08-18 12:39:40,089 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_phys [2020-08-18 12:39:40,089 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_unregister_port [2020-08-18 12:39:40,089 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2020-08-18 12:39:40,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 12:39:40,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 12:39:40,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_1 [2020-08-18 12:39:40,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2020-08-18 12:39:40,090 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2020-08-18 12:39:40,090 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_get_resource [2020-08-18 12:39:40,090 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_register_driver [2020-08-18 12:39:40,090 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_unregister_driver [2020-08-18 12:39:40,091 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-18 12:39:40,091 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2020-08-18 12:39:40,091 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 12:39:40,091 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 12:39:40,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:39:40,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 12:39:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-18 12:39:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-18 12:39:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-08-18 12:39:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 12:39:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-18 12:39:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2020-08-18 12:39:40,093 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2020-08-18 12:39:40,093 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2020-08-18 12:39:40,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 12:39:40,093 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-08-18 12:39:40,093 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-08-18 12:39:40,093 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-18 12:39:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-18 12:39:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_name [2020-08-18 12:39:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 12:39:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2020-08-18 12:39:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-18 12:39:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2020-08-18 12:39:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 12:39:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 12:39:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 12:39:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 12:39:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 12:39:40,096 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 12:39:40,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 12:39:40,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 12:39:40,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 12:39:40,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 12:39:40,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 12:39:40,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 12:39:40,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 12:39:40,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 12:39:40,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 12:39:40,097 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2020-08-18 12:39:40,097 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2020-08-18 12:39:40,098 INFO L130 BoogieDeclarations]: Found specification of procedure __gameport_register_port [2020-08-18 12:39:40,098 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_unregister_port [2020-08-18 12:39:40,098 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_phys [2020-08-18 12:39:40,098 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_allocate_port [2020-08-18 12:39:40,098 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_free_port [2020-08-18 12:39:40,098 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_name [2020-08-18 12:39:40,099 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_get_resource [2020-08-18 12:39:40,099 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_valid [2020-08-18 12:39:40,099 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_len [2020-08-18 12:39:40,099 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_start [2020-08-18 12:39:40,099 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_valid [2020-08-18 12:39:40,100 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_len [2020-08-18 12:39:40,100 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_register_driver [2020-08-18 12:39:40,100 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_unregister_driver [2020-08-18 12:39:40,100 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_isa_probe [2020-08-18 12:39:40,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 12:39:40,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 12:39:40,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 12:39:40,101 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_pnp_probe [2020-08-18 12:39:40,101 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_init [2020-08-18 12:39:40,101 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_exit [2020-08-18 12:39:40,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 12:39:40,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 12:39:40,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_1 [2020-08-18 12:39:40,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:39:40,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2020-08-18 12:39:40,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-18 12:39:40,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2020-08-18 12:39:40,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2020-08-18 12:39:40,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2020-08-18 12:39:40,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2020-08-18 12:39:40,103 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 12:39:40,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 12:39:40,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:39:40,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 12:39:40,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 12:39:40,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:39:40,642 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 12:39:41,204 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:39:41,205 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 12:39:41,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:39:41 BoogieIcfgContainer [2020-08-18 12:39:41,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:39:41,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:39:41,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:39:41,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:39:41,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:39:38" (1/3) ... [2020-08-18 12:39:41,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ee417d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:39:41, skipping insertion in model container [2020-08-18 12:39:41,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:39" (2/3) ... [2020-08-18 12:39:41,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ee417d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:39:41, skipping insertion in model container [2020-08-18 12:39:41,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:39:41" (3/3) ... [2020-08-18 12:39:41,220 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 [2020-08-18 12:39:41,230 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:39:41,238 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 12:39:41,253 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 12:39:41,280 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:39:41,280 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:39:41,280 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:39:41,280 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:39:41,280 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:39:41,281 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:39:41,281 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:39:41,281 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:39:41,307 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states. [2020-08-18 12:39:41,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-18 12:39:41,322 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:39:41,323 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-08-18 12:39:41,323 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:39:41,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:39:41,330 INFO L82 PathProgramCache]: Analyzing trace with hash -2083768503, now seen corresponding path program 1 times [2020-08-18 12:39:41,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:39:41,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306552579] [2020-08-18 12:39:41,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:39:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:42,065 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 12:39:42,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:42,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:42,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:39:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:42,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:39:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:42,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 12:39:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:42,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 12:39:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:42,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:42,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 12:39:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:42,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 12:39:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:42,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 12:39:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:42,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 12:39:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:42,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 12:39:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:42,375 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 12:39:42,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306552579] [2020-08-18 12:39:42,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:39:42,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 12:39:42,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429098241] [2020-08-18 12:39:42,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 12:39:42,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:39:42,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 12:39:42,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:39:42,407 INFO L87 Difference]: Start difference. First operand 348 states. Second operand 10 states. [2020-08-18 12:39:42,599 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-18 12:39:43,558 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-18 12:39:44,670 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-18 12:39:44,835 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-18 12:39:44,998 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-18 12:39:45,170 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-18 12:39:47,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:39:47,115 INFO L93 Difference]: Finished difference Result 815 states and 1118 transitions. [2020-08-18 12:39:47,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 12:39:47,117 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-08-18 12:39:47,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:39:47,134 INFO L225 Difference]: With dead ends: 815 [2020-08-18 12:39:47,135 INFO L226 Difference]: Without dead ends: 429 [2020-08-18 12:39:47,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-08-18 12:39:47,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-08-18 12:39:47,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 306. [2020-08-18 12:39:47,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-08-18 12:39:47,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 386 transitions. [2020-08-18 12:39:47,258 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 386 transitions. Word has length 91 [2020-08-18 12:39:47,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:39:47,259 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 386 transitions. [2020-08-18 12:39:47,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 12:39:47,259 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 386 transitions. [2020-08-18 12:39:47,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 12:39:47,265 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:39:47,266 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-08-18 12:39:47,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:39:47,266 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:39:47,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:39:47,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1314856814, now seen corresponding path program 1 times [2020-08-18 12:39:47,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:39:47,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618933676] [2020-08-18 12:39:47,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:39:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:47,544 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 12:39:47,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:47,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:47,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:39:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:47,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:39:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:47,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 12:39:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:47,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 12:39:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:47,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:47,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:39:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:47,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 12:39:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:47,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 12:39:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:47,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 12:39:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:47,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 12:39:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:47,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 12:39:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:47,656 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 12:39:47,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618933676] [2020-08-18 12:39:47,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:39:47,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:39:47,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273716979] [2020-08-18 12:39:47,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:39:47,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:39:47,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:39:47,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:39:47,660 INFO L87 Difference]: Start difference. First operand 306 states and 386 transitions. Second operand 6 states. [2020-08-18 12:39:47,848 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-18 12:39:50,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:39:50,407 INFO L93 Difference]: Finished difference Result 722 states and 963 transitions. [2020-08-18 12:39:50,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 12:39:50,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-08-18 12:39:50,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:39:50,417 INFO L225 Difference]: With dead ends: 722 [2020-08-18 12:39:50,417 INFO L226 Difference]: Without dead ends: 441 [2020-08-18 12:39:50,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:39:50,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-08-18 12:39:50,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 308. [2020-08-18 12:39:50,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-08-18 12:39:50,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 388 transitions. [2020-08-18 12:39:50,471 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 388 transitions. Word has length 97 [2020-08-18 12:39:50,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:39:50,472 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 388 transitions. [2020-08-18 12:39:50,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:39:50,472 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 388 transitions. [2020-08-18 12:39:50,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-08-18 12:39:50,477 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:39:50,478 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-18 12:39:50,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:39:50,478 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:39:50,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:39:50,479 INFO L82 PathProgramCache]: Analyzing trace with hash -492581383, now seen corresponding path program 1 times [2020-08-18 12:39:50,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:39:50,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658618257] [2020-08-18 12:39:50,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:39:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:50,726 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 12:39:50,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:50,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:50,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:39:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:50,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:39:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:50,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 12:39:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:50,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:50,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:50,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:39:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:50,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 12:39:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:50,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:50,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:50,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:39:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:50,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 12:39:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:50,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:50,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:50,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:39:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:50,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 12:39:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:50,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:50,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:39:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:50,883 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-18 12:39:50,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658618257] [2020-08-18 12:39:50,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:39:50,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:39:50,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030328050] [2020-08-18 12:39:50,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:39:50,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:39:50,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:39:50,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:39:50,886 INFO L87 Difference]: Start difference. First operand 308 states and 388 transitions. Second operand 6 states. [2020-08-18 12:39:51,001 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-18 12:39:51,270 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-08-18 12:39:51,452 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-08-18 12:39:54,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:39:54,837 INFO L93 Difference]: Finished difference Result 945 states and 1246 transitions. [2020-08-18 12:39:54,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 12:39:54,838 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-08-18 12:39:54,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:39:54,845 INFO L225 Difference]: With dead ends: 945 [2020-08-18 12:39:54,845 INFO L226 Difference]: Without dead ends: 662 [2020-08-18 12:39:54,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:39:54,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2020-08-18 12:39:54,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 489. [2020-08-18 12:39:54,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-08-18 12:39:54,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 617 transitions. [2020-08-18 12:39:54,916 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 617 transitions. Word has length 123 [2020-08-18 12:39:54,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:39:54,916 INFO L479 AbstractCegarLoop]: Abstraction has 489 states and 617 transitions. [2020-08-18 12:39:54,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:39:54,916 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 617 transitions. [2020-08-18 12:39:54,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-08-18 12:39:54,919 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:39:54,919 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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] [2020-08-18 12:39:54,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 12:39:54,920 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:39:54,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:39:54,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1067393612, now seen corresponding path program 1 times [2020-08-18 12:39:54,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:39:54,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129946782] [2020-08-18 12:39:54,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:39:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:55,139 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 12:39:55,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:55,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:55,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:39:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:55,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:39:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:55,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 12:39:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:55,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 12:39:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:55,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:55,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:39:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:55,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 12:39:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:55,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 12:39:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:55,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 12:39:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:55,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 12:39:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:55,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 12:39:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:55,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 12:39:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:55,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 12:39:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:55,302 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-08-18 12:39:55,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129946782] [2020-08-18 12:39:55,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:39:55,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 12:39:55,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45531950] [2020-08-18 12:39:55,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 12:39:55,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:39:55,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 12:39:55,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:39:55,307 INFO L87 Difference]: Start difference. First operand 489 states and 617 transitions. Second operand 7 states. [2020-08-18 12:39:55,469 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-18 12:39:58,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:39:58,535 INFO L93 Difference]: Finished difference Result 1237 states and 1674 transitions. [2020-08-18 12:39:58,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 12:39:58,536 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-08-18 12:39:58,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:39:58,543 INFO L225 Difference]: With dead ends: 1237 [2020-08-18 12:39:58,543 INFO L226 Difference]: Without dead ends: 773 [2020-08-18 12:39:58,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:39:58,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-08-18 12:39:58,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 541. [2020-08-18 12:39:58,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2020-08-18 12:39:58,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 699 transitions. [2020-08-18 12:39:58,640 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 699 transitions. Word has length 110 [2020-08-18 12:39:58,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:39:58,642 INFO L479 AbstractCegarLoop]: Abstraction has 541 states and 699 transitions. [2020-08-18 12:39:58,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 12:39:58,643 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 699 transitions. [2020-08-18 12:39:58,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 12:39:58,647 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:39:58,647 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-18 12:39:58,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 12:39:58,648 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:39:58,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:39:58,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1281815870, now seen corresponding path program 1 times [2020-08-18 12:39:58,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:39:58,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425130477] [2020-08-18 12:39:58,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:39:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:58,870 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 12:39:58,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:58,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:58,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:39:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:58,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:39:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:58,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 12:39:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:58,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:58,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 12:39:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:58,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:59,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:59,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:39:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:59,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 12:39:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:59,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:59,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:59,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:39:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:59,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 12:39:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:59,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:59,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:59,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:39:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:59,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 12:39:59,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:59,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:59,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:39:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:59,087 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-18 12:39:59,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425130477] [2020-08-18 12:39:59,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:39:59,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:39:59,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044013301] [2020-08-18 12:39:59,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:39:59,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:39:59,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:39:59,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:39:59,090 INFO L87 Difference]: Start difference. First operand 541 states and 699 transitions. Second operand 9 states. [2020-08-18 12:39:59,232 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-18 12:39:59,943 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-08-18 12:40:02,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:40:02,497 INFO L93 Difference]: Finished difference Result 1246 states and 1663 transitions. [2020-08-18 12:40:02,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 12:40:02,498 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 143 [2020-08-18 12:40:02,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:40:02,507 INFO L225 Difference]: With dead ends: 1246 [2020-08-18 12:40:02,508 INFO L226 Difference]: Without dead ends: 708 [2020-08-18 12:40:02,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-08-18 12:40:02,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-08-18 12:40:02,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 538. [2020-08-18 12:40:02,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-08-18 12:40:02,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 692 transitions. [2020-08-18 12:40:02,581 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 692 transitions. Word has length 143 [2020-08-18 12:40:02,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:40:02,581 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 692 transitions. [2020-08-18 12:40:02,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:40:02,582 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 692 transitions. [2020-08-18 12:40:02,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 12:40:02,587 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:40:02,587 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-18 12:40:02,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 12:40:02,588 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:40:02,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:40:02,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1536881969, now seen corresponding path program 1 times [2020-08-18 12:40:02,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:40:02,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245221242] [2020-08-18 12:40:02,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:40:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:02,819 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 12:40:02,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:40:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:02,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:40:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:02,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:40:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:02,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:40:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:02,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 12:40:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:02,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:02,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:40:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:02,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 12:40:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:02,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:02,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:02,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:40:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:02,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 12:40:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:02,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:02,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:02,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:40:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:02,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 12:40:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:02,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:03,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:03,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:40:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:03,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 12:40:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:03,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:03,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:40:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:03,079 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-18 12:40:03,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245221242] [2020-08-18 12:40:03,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:40:03,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 12:40:03,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728882584] [2020-08-18 12:40:03,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 12:40:03,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:40:03,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 12:40:03,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:40:03,083 INFO L87 Difference]: Start difference. First operand 538 states and 692 transitions. Second operand 10 states. [2020-08-18 12:40:03,259 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-18 12:40:03,973 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 12:40:04,138 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 12:40:06,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:40:06,804 INFO L93 Difference]: Finished difference Result 1233 states and 1636 transitions. [2020-08-18 12:40:06,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 12:40:06,804 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-08-18 12:40:06,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:40:06,810 INFO L225 Difference]: With dead ends: 1233 [2020-08-18 12:40:06,810 INFO L226 Difference]: Without dead ends: 702 [2020-08-18 12:40:06,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-08-18 12:40:06,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2020-08-18 12:40:06,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 538. [2020-08-18 12:40:06,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-08-18 12:40:06,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 690 transitions. [2020-08-18 12:40:06,866 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 690 transitions. Word has length 152 [2020-08-18 12:40:06,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:40:06,866 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 690 transitions. [2020-08-18 12:40:06,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 12:40:06,867 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 690 transitions. [2020-08-18 12:40:06,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-18 12:40:06,869 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:40:06,870 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-18 12:40:06,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 12:40:06,870 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:40:06,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:40:06,871 INFO L82 PathProgramCache]: Analyzing trace with hash -968590774, now seen corresponding path program 1 times [2020-08-18 12:40:06,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:40:06,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366615587] [2020-08-18 12:40:06,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:40:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:07,111 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 12:40:07,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:40:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:07,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:40:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:07,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:40:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:07,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:40:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:07,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 12:40:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:07,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:07,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:40:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:07,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 12:40:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:07,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:07,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:07,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:40:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:07,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 12:40:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:07,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:07,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:07,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:40:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:07,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 12:40:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:07,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:07,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:07,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:40:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:07,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 12:40:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:07,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:07,389 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-08-18 12:40:07,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366615587] [2020-08-18 12:40:07,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:40:07,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 12:40:07,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609287145] [2020-08-18 12:40:07,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 12:40:07,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:40:07,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 12:40:07,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-08-18 12:40:07,392 INFO L87 Difference]: Start difference. First operand 538 states and 690 transitions. Second operand 13 states. [2020-08-18 12:40:07,537 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-18 12:40:08,284 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 12:40:08,715 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 12:40:08,895 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 12:40:09,086 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 12:40:09,266 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 12:40:09,470 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-08-18 12:40:09,692 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-08-18 12:40:11,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:40:11,624 INFO L93 Difference]: Finished difference Result 1217 states and 1615 transitions. [2020-08-18 12:40:11,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 12:40:11,625 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 146 [2020-08-18 12:40:11,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:40:11,630 INFO L225 Difference]: With dead ends: 1217 [2020-08-18 12:40:11,630 INFO L226 Difference]: Without dead ends: 704 [2020-08-18 12:40:11,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-08-18 12:40:11,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-08-18 12:40:11,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 545. [2020-08-18 12:40:11,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-08-18 12:40:11,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 702 transitions. [2020-08-18 12:40:11,687 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 702 transitions. Word has length 146 [2020-08-18 12:40:11,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:40:11,688 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 702 transitions. [2020-08-18 12:40:11,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 12:40:11,688 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 702 transitions. [2020-08-18 12:40:11,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-18 12:40:11,691 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:40:11,691 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-18 12:40:11,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 12:40:11,691 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:40:11,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:40:11,692 INFO L82 PathProgramCache]: Analyzing trace with hash 948696336, now seen corresponding path program 1 times [2020-08-18 12:40:11,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:40:11,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085388597] [2020-08-18 12:40:11,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:40:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:11,920 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 12:40:11,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:40:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:11,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:40:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:11,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:40:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:11,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:40:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:12,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 12:40:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:12,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:12,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:40:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:12,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 12:40:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:12,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:12,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:12,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:40:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:12,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 12:40:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:12,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:12,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:12,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:40:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:12,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:40:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:12,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-18 12:40:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:12,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:12,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:12,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:40:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:12,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:40:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:12,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 12:40:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:12,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:12,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:40:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:12,368 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-18 12:40:12,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085388597] [2020-08-18 12:40:12,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:40:12,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 12:40:12,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460273706] [2020-08-18 12:40:12,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 12:40:12,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:40:12,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 12:40:12,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:40:12,378 INFO L87 Difference]: Start difference. First operand 545 states and 702 transitions. Second operand 11 states. [2020-08-18 12:40:12,593 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-18 12:40:14,009 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-08-18 12:40:14,204 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 12:40:14,381 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 12:40:14,567 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 12:40:14,734 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 12:40:16,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:40:16,518 INFO L93 Difference]: Finished difference Result 1168 states and 1528 transitions. [2020-08-18 12:40:16,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 12:40:16,518 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 164 [2020-08-18 12:40:16,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:40:16,523 INFO L225 Difference]: With dead ends: 1168 [2020-08-18 12:40:16,523 INFO L226 Difference]: Without dead ends: 648 [2020-08-18 12:40:16,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-08-18 12:40:16,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-08-18 12:40:16,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 550. [2020-08-18 12:40:16,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-08-18 12:40:16,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 707 transitions. [2020-08-18 12:40:16,574 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 707 transitions. Word has length 164 [2020-08-18 12:40:16,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:40:16,575 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 707 transitions. [2020-08-18 12:40:16,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 12:40:16,575 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 707 transitions. [2020-08-18 12:40:16,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 12:40:16,578 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:40:16,578 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-18 12:40:16,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 12:40:16,579 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:40:16,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:40:16,579 INFO L82 PathProgramCache]: Analyzing trace with hash 925896005, now seen corresponding path program 1 times [2020-08-18 12:40:16,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:40:16,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346600617] [2020-08-18 12:40:16,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:40:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:16,793 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 12:40:16,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:40:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:16,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:40:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:16,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:40:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:16,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:40:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:16,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 12:40:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:16,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:16,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:40:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:16,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 12:40:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:16,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:16,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:16,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:40:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:16,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:40:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:16,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 12:40:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:16,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:16,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:16,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:40:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:16,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-18 12:40:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:16,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:17,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:17,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:40:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:17,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 12:40:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:17,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:17,082 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-08-18 12:40:17,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346600617] [2020-08-18 12:40:17,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:40:17,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 12:40:17,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959043759] [2020-08-18 12:40:17,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 12:40:17,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:40:17,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 12:40:17,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:40:17,088 INFO L87 Difference]: Start difference. First operand 550 states and 707 transitions. Second operand 10 states. [2020-08-18 12:40:17,279 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-18 12:40:17,863 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-08-18 12:40:18,625 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 12:40:19,245 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 12:40:19,415 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 12:40:20,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:40:20,567 INFO L93 Difference]: Finished difference Result 1271 states and 1638 transitions. [2020-08-18 12:40:20,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 12:40:20,568 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-08-18 12:40:20,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:40:20,575 INFO L225 Difference]: With dead ends: 1271 [2020-08-18 12:40:20,575 INFO L226 Difference]: Without dead ends: 746 [2020-08-18 12:40:20,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-08-18 12:40:20,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2020-08-18 12:40:20,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 430. [2020-08-18 12:40:20,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-08-18 12:40:20,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 531 transitions. [2020-08-18 12:40:20,635 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 531 transitions. Word has length 152 [2020-08-18 12:40:20,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:40:20,636 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 531 transitions. [2020-08-18 12:40:20,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 12:40:20,636 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 531 transitions. [2020-08-18 12:40:20,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-18 12:40:20,640 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:40:20,640 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-18 12:40:20,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 12:40:20,641 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:40:20,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:40:20,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1391356121, now seen corresponding path program 1 times [2020-08-18 12:40:20,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:40:20,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034103677] [2020-08-18 12:40:20,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:40:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:20,917 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 12:40:20,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:40:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:20,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:40:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:20,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:40:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:20,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:40:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:20,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 12:40:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:20,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 12:40:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:20,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:20,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:40:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:20,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 12:40:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:20,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 12:40:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:20,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 12:40:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:20,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 12:40:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:21,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 12:40:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:21,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 12:40:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:21,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 12:40:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:21,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 12:40:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:21,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 12:40:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:21,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 12:40:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:21,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 12:40:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:21,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:21,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 12:40:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:21,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:21,056 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-08-18 12:40:21,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034103677] [2020-08-18 12:40:21,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:40:21,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-18 12:40:21,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869667840] [2020-08-18 12:40:21,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 12:40:21,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:40:21,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 12:40:21,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:40:21,058 INFO L87 Difference]: Start difference. First operand 430 states and 531 transitions. Second operand 8 states. [2020-08-18 12:40:21,190 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-18 12:40:24,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:40:24,355 INFO L93 Difference]: Finished difference Result 980 states and 1265 transitions. [2020-08-18 12:40:24,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 12:40:24,356 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 151 [2020-08-18 12:40:24,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:40:24,361 INFO L225 Difference]: With dead ends: 980 [2020-08-18 12:40:24,361 INFO L226 Difference]: Without dead ends: 592 [2020-08-18 12:40:24,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:40:24,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-08-18 12:40:24,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 453. [2020-08-18 12:40:24,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-08-18 12:40:24,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 568 transitions. [2020-08-18 12:40:24,411 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 568 transitions. Word has length 151 [2020-08-18 12:40:24,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:40:24,411 INFO L479 AbstractCegarLoop]: Abstraction has 453 states and 568 transitions. [2020-08-18 12:40:24,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 12:40:24,412 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 568 transitions. [2020-08-18 12:40:24,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-18 12:40:24,414 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:40:24,414 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-18 12:40:24,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 12:40:24,415 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:40:24,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:40:24,415 INFO L82 PathProgramCache]: Analyzing trace with hash -642852378, now seen corresponding path program 2 times [2020-08-18 12:40:24,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:40:24,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038692946] [2020-08-18 12:40:24,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:40:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:24,700 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 12:40:24,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:40:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:24,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:40:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:24,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:40:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:24,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:40:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:24,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 12:40:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:24,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:24,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:40:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:24,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 12:40:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:24,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:24,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:24,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:40:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:24,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:40:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:24,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 12:40:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:24,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:24,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:24,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:40:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:24,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:40:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:24,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 12:40:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:24,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:24,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:24,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:40:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:24,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:40:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:24,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 12:40:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:24,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-18 12:40:24,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038692946] [2020-08-18 12:40:24,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:40:24,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 12:40:24,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751599038] [2020-08-18 12:40:24,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 12:40:24,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:40:24,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 12:40:24,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:40:24,971 INFO L87 Difference]: Start difference. First operand 453 states and 568 transitions. Second operand 7 states. [2020-08-18 12:40:25,111 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-18 12:40:25,390 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-08-18 12:40:25,550 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-08-18 12:40:27,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:40:27,461 INFO L93 Difference]: Finished difference Result 553 states and 710 transitions. [2020-08-18 12:40:27,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 12:40:27,462 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-08-18 12:40:27,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:40:27,463 INFO L225 Difference]: With dead ends: 553 [2020-08-18 12:40:27,463 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 12:40:27,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:40:27,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 12:40:27,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 12:40:27,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 12:40:27,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 12:40:27,466 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 164 [2020-08-18 12:40:27,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:40:27,467 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 12:40:27,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 12:40:27,467 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 12:40:27,467 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 12:40:27,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 12:40:27,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 12:40:27,847 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 7 [2020-08-18 12:40:27,961 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 7