/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 log-additional-information=true -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 0.1.25-177f698 [2020-08-21 14:38:17,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:38:17,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:38:17,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:38:17,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:38:17,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:38:17,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:38:17,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:38:17,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:38:17,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:38:17,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:38:17,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:38:17,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:38:17,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:38:17,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:38:17,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:38:17,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:38:17,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:38:17,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:38:17,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:38:17,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:38:17,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:38:17,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:38:17,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:38:17,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:38:17,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:38:17,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:38:17,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:38:17,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:38:17,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 14:38:17,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 14:38:17,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 14:38:17,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 14:38:17,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 14:38:17,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 14:38:17,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 14:38:17,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 14:38:17,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 14:38:17,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:38:17,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:38:17,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:38:17,439 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-21 14:38:17,475 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:38:17,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:38:17,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:38:17,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:38:17,477 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:38:17,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:38:17,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:38:17,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:38:17,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:38:17,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:38:17,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:38:17,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:38:17,479 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:38:17,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:38:17,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:38:17,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:38:17,480 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:38:17,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:38:17,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:38:17,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:38:17,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:38:17,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:38:17,481 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:38:17,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:38:17,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:38:17,482 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:38:17,482 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-21 14:38:17,482 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 -> log-additional-information=true; [2020-08-21 14:38:17,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:38:17,779 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:38:17,785 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:38:17,786 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:38:17,787 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:38:17,787 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-21 14:38:17,846 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b08090b18/311f8b75a1a44809ac3704a6e5c61e36/FLAG993322764 [2020-08-21 14:38:18,484 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:38:18,485 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-21 14:38:18,508 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b08090b18/311f8b75a1a44809ac3704a6e5c61e36/FLAG993322764 [2020-08-21 14:38:18,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b08090b18/311f8b75a1a44809ac3704a6e5c61e36 [2020-08-21 14:38:18,685 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:38:18,687 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:38:18,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:38:18,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:38:18,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:38:18,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:38:18" (1/1) ... [2020-08-21 14:38:18,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c58cdd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:38:18, skipping insertion in model container [2020-08-21 14:38:18,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:38:18" (1/1) ... [2020-08-21 14:38:18,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:38:18,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:38:19,270 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1323] [2020-08-21 14:38:19,271 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] [2020-08-21 14:38:19,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:38:19,744 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:38:19,808 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1323] [2020-08-21 14:38:19,809 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] [2020-08-21 14:38:19,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:38:19,936 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:38:19,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:38:19 WrapperNode [2020-08-21 14:38:19,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:38:19,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:38:19,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:38:19,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:38:19,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:38:19" (1/1) ... [2020-08-21 14:38:19,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:38:19" (1/1) ... [2020-08-21 14:38:19,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:38:19" (1/1) ... [2020-08-21 14:38:19,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:38:19" (1/1) ... [2020-08-21 14:38:20,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:38:19" (1/1) ... [2020-08-21 14:38:20,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:38:19" (1/1) ... [2020-08-21 14:38:20,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:38:19" (1/1) ... [2020-08-21 14:38:20,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:38:20,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:38:20,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:38:20,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:38:20,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:38:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:38:20,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:38:20,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:38:20,155 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-08-21 14:38:20,155 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-21 14:38:20,155 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2020-08-21 14:38:20,155 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2020-08-21 14:38:20,155 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-21 14:38:20,156 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-21 14:38:20,156 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_name [2020-08-21 14:38:20,161 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 14:38:20,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-21 14:38:20,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-21 14:38:20,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-21 14:38:20,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-21 14:38:20,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-21 14:38:20,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-21 14:38:20,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-21 14:38:20,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-21 14:38:20,164 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2020-08-21 14:38:20,165 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_allocate_port [2020-08-21 14:38:20,165 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_free_port [2020-08-21 14:38:20,165 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_name [2020-08-21 14:38:20,165 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_valid [2020-08-21 14:38:20,166 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_len [2020-08-21 14:38:20,166 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_start [2020-08-21 14:38:20,166 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_valid [2020-08-21 14:38:20,166 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_len [2020-08-21 14:38:20,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_isa_probe [2020-08-21 14:38:20,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_pnp_probe [2020-08-21 14:38:20,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_init [2020-08-21 14:38:20,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_exit [2020-08-21 14:38:20,167 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:38:20,167 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-21 14:38:20,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2020-08-21 14:38:20,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-21 14:38:20,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2020-08-21 14:38:20,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2020-08-21 14:38:20,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2020-08-21 14:38:20,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2020-08-21 14:38:20,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __gameport_register_port [2020-08-21 14:38:20,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-21 14:38:20,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-08-21 14:38:20,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-08-21 14:38:20,169 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_phys [2020-08-21 14:38:20,169 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_unregister_port [2020-08-21 14:38:20,169 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2020-08-21 14:38:20,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-21 14:38:20,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-21 14:38:20,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_1 [2020-08-21 14:38:20,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2020-08-21 14:38:20,170 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2020-08-21 14:38:20,170 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_get_resource [2020-08-21 14:38:20,170 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_register_driver [2020-08-21 14:38:20,171 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_unregister_driver [2020-08-21 14:38:20,171 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-21 14:38:20,171 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2020-08-21 14:38:20,171 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-21 14:38:20,171 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-21 14:38:20,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:38:20,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-21 14:38:20,172 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-21 14:38:20,172 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-21 14:38:20,172 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-08-21 14:38:20,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 14:38:20,172 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-21 14:38:20,173 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2020-08-21 14:38:20,173 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2020-08-21 14:38:20,173 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2020-08-21 14:38:20,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:38:20,173 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-08-21 14:38:20,173 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-08-21 14:38:20,174 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-21 14:38:20,174 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-21 14:38:20,174 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_name [2020-08-21 14:38:20,174 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-21 14:38:20,174 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2020-08-21 14:38:20,175 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-21 14:38:20,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2020-08-21 14:38:20,175 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 14:38:20,175 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 14:38:20,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 14:38:20,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-21 14:38:20,176 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 14:38:20,176 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 14:38:20,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-21 14:38:20,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 14:38:20,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-21 14:38:20,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-21 14:38:20,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-21 14:38:20,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-21 14:38:20,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-21 14:38:20,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-21 14:38:20,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-21 14:38:20,177 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2020-08-21 14:38:20,177 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2020-08-21 14:38:20,177 INFO L130 BoogieDeclarations]: Found specification of procedure __gameport_register_port [2020-08-21 14:38:20,178 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_unregister_port [2020-08-21 14:38:20,178 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_phys [2020-08-21 14:38:20,178 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_allocate_port [2020-08-21 14:38:20,178 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_free_port [2020-08-21 14:38:20,178 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_name [2020-08-21 14:38:20,178 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_get_resource [2020-08-21 14:38:20,178 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_valid [2020-08-21 14:38:20,178 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_len [2020-08-21 14:38:20,179 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_start [2020-08-21 14:38:20,179 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_valid [2020-08-21 14:38:20,179 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_len [2020-08-21 14:38:20,179 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_register_driver [2020-08-21 14:38:20,179 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_unregister_driver [2020-08-21 14:38:20,179 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_isa_probe [2020-08-21 14:38:20,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:38:20,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:38:20,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 14:38:20,180 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_pnp_probe [2020-08-21 14:38:20,185 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_init [2020-08-21 14:38:20,185 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_exit [2020-08-21 14:38:20,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-21 14:38:20,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-21 14:38:20,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_1 [2020-08-21 14:38:20,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:38:20,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2020-08-21 14:38:20,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-21 14:38:20,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2020-08-21 14:38:20,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2020-08-21 14:38:20,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2020-08-21 14:38:20,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2020-08-21 14:38:20,187 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 14:38:20,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:38:20,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:38:20,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 14:38:20,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 14:38:20,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:38:20,783 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-21 14:38:21,468 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:38:21,468 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 14:38:21,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:38:21 BoogieIcfgContainer [2020-08-21 14:38:21,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:38:21,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:38:21,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:38:21,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:38:21,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:38:18" (1/3) ... [2020-08-21 14:38:21,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b9d8a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:38:21, skipping insertion in model container [2020-08-21 14:38:21,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:38:19" (2/3) ... [2020-08-21 14:38:21,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b9d8a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:38:21, skipping insertion in model container [2020-08-21 14:38:21,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:38:21" (3/3) ... [2020-08-21 14:38:21,483 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 [2020-08-21 14:38:21,494 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:38:21,503 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:38:21,518 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:38:21,545 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:38:21,546 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:38:21,546 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:38:21,546 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:38:21,546 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:38:21,546 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:38:21,547 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:38:21,547 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:38:21,575 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states. [2020-08-21 14:38:21,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-21 14:38:21,591 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:38:21,592 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] [2020-08-21 14:38:21,593 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:38:21,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:38:21,600 INFO L82 PathProgramCache]: Analyzing trace with hash -2083768503, now seen corresponding path program 1 times [2020-08-21 14:38:21,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:38:21,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901499948] [2020-08-21 14:38:21,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:38:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:22,386 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 14:38:22,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:22,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:22,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:38:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:22,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:38:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:22,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 14:38:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:22,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 14:38:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:22,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:22,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:38:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:22,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 14:38:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:22,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-21 14:38:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:22,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 14:38:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:22,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 14:38:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 14:38:22,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901499948] [2020-08-21 14:38:22,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:38:22,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 14:38:22,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842247555] [2020-08-21 14:38:22,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 14:38:22,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:38:22,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 14:38:22,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-21 14:38:22,706 INFO L87 Difference]: Start difference. First operand 348 states. Second operand 10 states. [2020-08-21 14:38:22,926 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-21 14:38:23,990 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-21 14:38:24,984 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-21 14:38:25,136 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-21 14:38:25,324 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-21 14:38:25,516 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-21 14:38:27,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:38:27,474 INFO L93 Difference]: Finished difference Result 815 states and 1118 transitions. [2020-08-21 14:38:27,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 14:38:27,477 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-08-21 14:38:27,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:38:27,495 INFO L225 Difference]: With dead ends: 815 [2020-08-21 14:38:27,495 INFO L226 Difference]: Without dead ends: 429 [2020-08-21 14:38:27,503 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 [2020-08-21 14:38:27,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-08-21 14:38:27,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 306. [2020-08-21 14:38:27,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-08-21 14:38:27,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 386 transitions. [2020-08-21 14:38:27,614 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 386 transitions. Word has length 91 [2020-08-21 14:38:27,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:38:27,615 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 386 transitions. [2020-08-21 14:38:27,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 14:38:27,616 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 386 transitions. [2020-08-21 14:38:27,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 14:38:27,622 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:38:27,622 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] [2020-08-21 14:38:27,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:38:27,623 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:38:27,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:38:27,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1314856814, now seen corresponding path program 1 times [2020-08-21 14:38:27,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:38:27,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706613038] [2020-08-21 14:38:27,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:38:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:27,975 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 14:38:27,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:28,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:28,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:38:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:28,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:38:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:28,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 14:38:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:28,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 14:38:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:28,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:28,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:38:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:28,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 14:38:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:28,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 14:38:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:28,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 14:38:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:28,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 14:38:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:28,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:38:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:28,149 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 14:38:28,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706613038] [2020-08-21 14:38:28,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:38:28,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 14:38:28,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266712198] [2020-08-21 14:38:28,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 14:38:28,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:38:28,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 14:38:28,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 14:38:28,153 INFO L87 Difference]: Start difference. First operand 306 states and 386 transitions. Second operand 6 states. [2020-08-21 14:38:28,279 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-21 14:38:30,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:38:30,807 INFO L93 Difference]: Finished difference Result 722 states and 963 transitions. [2020-08-21 14:38:30,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 14:38:30,808 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-08-21 14:38:30,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:38:30,815 INFO L225 Difference]: With dead ends: 722 [2020-08-21 14:38:30,815 INFO L226 Difference]: Without dead ends: 441 [2020-08-21 14:38:30,817 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 [2020-08-21 14:38:30,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-08-21 14:38:30,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 308. [2020-08-21 14:38:30,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-08-21 14:38:30,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 388 transitions. [2020-08-21 14:38:30,869 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 388 transitions. Word has length 97 [2020-08-21 14:38:30,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:38:30,870 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 388 transitions. [2020-08-21 14:38:30,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 14:38:30,870 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 388 transitions. [2020-08-21 14:38:30,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-08-21 14:38:30,875 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:38:30,876 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] [2020-08-21 14:38:30,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:38:30,876 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:38:30,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:38:30,877 INFO L82 PathProgramCache]: Analyzing trace with hash -492581383, now seen corresponding path program 1 times [2020-08-21 14:38:30,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:38:30,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751729258] [2020-08-21 14:38:30,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:38:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:31,077 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 14:38:31,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:31,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:31,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:38:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:31,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:38:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:31,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 14:38:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:31,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:31,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:31,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:38:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:31,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 14:38:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:31,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:31,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:31,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:38:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:31,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 14:38:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:31,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:31,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:31,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:38:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:31,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:38:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:31,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:31,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:38:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:31,294 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-21 14:38:31,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751729258] [2020-08-21 14:38:31,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:38:31,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 14:38:31,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098164182] [2020-08-21 14:38:31,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 14:38:31,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:38:31,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 14:38:31,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 14:38:31,299 INFO L87 Difference]: Start difference. First operand 308 states and 388 transitions. Second operand 6 states. [2020-08-21 14:38:31,434 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-21 14:38:31,687 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-08-21 14:38:31,864 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-08-21 14:38:35,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:38:35,140 INFO L93 Difference]: Finished difference Result 945 states and 1246 transitions. [2020-08-21 14:38:35,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 14:38:35,140 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-08-21 14:38:35,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:38:35,146 INFO L225 Difference]: With dead ends: 945 [2020-08-21 14:38:35,147 INFO L226 Difference]: Without dead ends: 662 [2020-08-21 14:38:35,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-21 14:38:35,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2020-08-21 14:38:35,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 489. [2020-08-21 14:38:35,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-08-21 14:38:35,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 617 transitions. [2020-08-21 14:38:35,226 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 617 transitions. Word has length 123 [2020-08-21 14:38:35,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:38:35,229 INFO L479 AbstractCegarLoop]: Abstraction has 489 states and 617 transitions. [2020-08-21 14:38:35,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 14:38:35,229 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 617 transitions. [2020-08-21 14:38:35,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-08-21 14:38:35,233 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:38:35,234 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] [2020-08-21 14:38:35,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:38:35,234 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:38:35,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:38:35,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1067393612, now seen corresponding path program 1 times [2020-08-21 14:38:35,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:38:35,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078965707] [2020-08-21 14:38:35,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:38:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:35,454 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 14:38:35,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:35,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:35,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:38:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:35,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:38:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:35,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 14:38:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:35,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 14:38:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:35,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:35,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:38:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:35,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 14:38:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:35,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 14:38:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:35,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 14:38:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:35,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 14:38:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:35,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 14:38:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:35,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 14:38:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:35,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 14:38:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:35,552 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-08-21 14:38:35,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078965707] [2020-08-21 14:38:35,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:38:35,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 14:38:35,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626734485] [2020-08-21 14:38:35,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 14:38:35,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:38:35,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 14:38:35,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 14:38:35,554 INFO L87 Difference]: Start difference. First operand 489 states and 617 transitions. Second operand 7 states. [2020-08-21 14:38:35,690 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-21 14:38:38,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:38:38,645 INFO L93 Difference]: Finished difference Result 1237 states and 1674 transitions. [2020-08-21 14:38:38,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 14:38:38,646 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-08-21 14:38:38,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:38:38,652 INFO L225 Difference]: With dead ends: 1237 [2020-08-21 14:38:38,652 INFO L226 Difference]: Without dead ends: 773 [2020-08-21 14:38:38,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-21 14:38:38,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-08-21 14:38:38,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 541. [2020-08-21 14:38:38,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2020-08-21 14:38:38,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 699 transitions. [2020-08-21 14:38:38,722 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 699 transitions. Word has length 110 [2020-08-21 14:38:38,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:38:38,723 INFO L479 AbstractCegarLoop]: Abstraction has 541 states and 699 transitions. [2020-08-21 14:38:38,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 14:38:38,723 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 699 transitions. [2020-08-21 14:38:38,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-21 14:38:38,726 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:38:38,727 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] [2020-08-21 14:38:38,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 14:38:38,727 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:38:38,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:38:38,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1281815870, now seen corresponding path program 1 times [2020-08-21 14:38:38,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:38:38,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284279406] [2020-08-21 14:38:38,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:38:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:38,972 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 14:38:38,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:38:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:38:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 14:38:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 14:38:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:38:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 14:38:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:38:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 14:38:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:38:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 14:38:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:38:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,280 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-21 14:38:39,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284279406] [2020-08-21 14:38:39,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:38:39,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 14:38:39,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20795019] [2020-08-21 14:38:39,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 14:38:39,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:38:39,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 14:38:39,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-21 14:38:39,291 INFO L87 Difference]: Start difference. First operand 541 states and 699 transitions. Second operand 9 states. [2020-08-21 14:38:39,478 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-21 14:38:40,118 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-08-21 14:38:42,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:38:42,721 INFO L93 Difference]: Finished difference Result 1246 states and 1663 transitions. [2020-08-21 14:38:42,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 14:38:42,722 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 143 [2020-08-21 14:38:42,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:38:42,729 INFO L225 Difference]: With dead ends: 1246 [2020-08-21 14:38:42,730 INFO L226 Difference]: Without dead ends: 708 [2020-08-21 14:38:42,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-08-21 14:38:42,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-08-21 14:38:42,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 538. [2020-08-21 14:38:42,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-08-21 14:38:42,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 692 transitions. [2020-08-21 14:38:42,826 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 692 transitions. Word has length 143 [2020-08-21 14:38:42,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:38:42,826 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 692 transitions. [2020-08-21 14:38:42,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 14:38:42,826 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 692 transitions. [2020-08-21 14:38:42,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 14:38:42,829 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:38:42,830 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] [2020-08-21 14:38:42,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 14:38:42,830 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:38:42,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:38:42,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1536881969, now seen corresponding path program 1 times [2020-08-21 14:38:42,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:38:42,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397614188] [2020-08-21 14:38:42,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:38:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,046 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 14:38:43,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:38:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:38:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 14:38:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:38:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 14:38:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:38:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:38:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:38:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 14:38:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:38:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-21 14:38:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:38:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,274 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-21 14:38:43,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397614188] [2020-08-21 14:38:43,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:38:43,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 14:38:43,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471966621] [2020-08-21 14:38:43,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 14:38:43,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:38:43,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 14:38:43,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-21 14:38:43,277 INFO L87 Difference]: Start difference. First operand 538 states and 692 transitions. Second operand 10 states. [2020-08-21 14:38:43,409 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-21 14:38:44,084 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 14:38:44,259 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 14:38:46,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:38:46,843 INFO L93 Difference]: Finished difference Result 1233 states and 1636 transitions. [2020-08-21 14:38:46,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 14:38:46,844 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-08-21 14:38:46,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:38:46,850 INFO L225 Difference]: With dead ends: 1233 [2020-08-21 14:38:46,850 INFO L226 Difference]: Without dead ends: 702 [2020-08-21 14:38:46,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-08-21 14:38:46,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2020-08-21 14:38:46,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 538. [2020-08-21 14:38:46,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-08-21 14:38:46,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 690 transitions. [2020-08-21 14:38:46,919 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 690 transitions. Word has length 152 [2020-08-21 14:38:46,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:38:46,919 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 690 transitions. [2020-08-21 14:38:46,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 14:38:46,919 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 690 transitions. [2020-08-21 14:38:46,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-21 14:38:46,923 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:38:46,924 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] [2020-08-21 14:38:46,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 14:38:46,924 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:38:46,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:38:46,924 INFO L82 PathProgramCache]: Analyzing trace with hash -968590774, now seen corresponding path program 1 times [2020-08-21 14:38:46,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:38:46,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336426448] [2020-08-21 14:38:46,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:38:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,208 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 14:38:47,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:38:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:38:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 14:38:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:38:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 14:38:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:38:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:38:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:38:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 14:38:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:38:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-21 14:38:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,694 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-08-21 14:38:47,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336426448] [2020-08-21 14:38:47,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:38:47,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 14:38:47,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383573690] [2020-08-21 14:38:47,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 14:38:47,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:38:47,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 14:38:47,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-08-21 14:38:47,698 INFO L87 Difference]: Start difference. First operand 538 states and 690 transitions. Second operand 13 states. [2020-08-21 14:38:47,899 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-21 14:38:48,918 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 14:38:49,397 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 14:38:49,568 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 14:38:49,752 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 14:38:49,939 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 14:38:50,131 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-08-21 14:38:50,333 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-08-21 14:38:52,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:38:52,149 INFO L93 Difference]: Finished difference Result 1217 states and 1615 transitions. [2020-08-21 14:38:52,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 14:38:52,150 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 146 [2020-08-21 14:38:52,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:38:52,156 INFO L225 Difference]: With dead ends: 1217 [2020-08-21 14:38:52,156 INFO L226 Difference]: Without dead ends: 704 [2020-08-21 14:38:52,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-08-21 14:38:52,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-08-21 14:38:52,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 545. [2020-08-21 14:38:52,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-08-21 14:38:52,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 702 transitions. [2020-08-21 14:38:52,214 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 702 transitions. Word has length 146 [2020-08-21 14:38:52,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:38:52,215 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 702 transitions. [2020-08-21 14:38:52,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 14:38:52,215 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 702 transitions. [2020-08-21 14:38:52,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-21 14:38:52,218 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:38:52,218 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] [2020-08-21 14:38:52,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 14:38:52,219 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:38:52,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:38:52,219 INFO L82 PathProgramCache]: Analyzing trace with hash 948696336, now seen corresponding path program 1 times [2020-08-21 14:38:52,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:38:52,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390123645] [2020-08-21 14:38:52,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:38:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:52,427 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 14:38:52,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:52,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:52,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:38:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:52,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:38:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:52,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 14:38:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:52,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:52,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:38:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:52,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 14:38:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:52,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:52,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:52,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:38:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:52,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:38:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:52,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:52,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:52,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:38:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:52,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:38:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:52,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-21 14:38:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:52,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:52,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:52,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:38:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:52,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:38:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:52,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-21 14:38:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:52,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:52,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:38:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:52,716 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-21 14:38:52,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390123645] [2020-08-21 14:38:52,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:38:52,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 14:38:52,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698835996] [2020-08-21 14:38:52,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 14:38:52,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:38:52,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 14:38:52,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-21 14:38:52,721 INFO L87 Difference]: Start difference. First operand 545 states and 702 transitions. Second operand 11 states. [2020-08-21 14:38:52,876 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-21 14:38:54,016 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-08-21 14:38:54,203 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 14:38:54,376 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 14:38:54,563 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 14:38:54,729 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 14:38:56,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:38:56,476 INFO L93 Difference]: Finished difference Result 1168 states and 1528 transitions. [2020-08-21 14:38:56,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 14:38:56,477 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 164 [2020-08-21 14:38:56,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:38:56,482 INFO L225 Difference]: With dead ends: 1168 [2020-08-21 14:38:56,482 INFO L226 Difference]: Without dead ends: 648 [2020-08-21 14:38:56,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-08-21 14:38:56,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-08-21 14:38:56,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 550. [2020-08-21 14:38:56,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-08-21 14:38:56,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 707 transitions. [2020-08-21 14:38:56,532 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 707 transitions. Word has length 164 [2020-08-21 14:38:56,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:38:56,533 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 707 transitions. [2020-08-21 14:38:56,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 14:38:56,533 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 707 transitions. [2020-08-21 14:38:56,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 14:38:56,535 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:38:56,536 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] [2020-08-21 14:38:56,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 14:38:56,536 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:38:56,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:38:56,537 INFO L82 PathProgramCache]: Analyzing trace with hash 925896005, now seen corresponding path program 1 times [2020-08-21 14:38:56,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:38:56,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251516221] [2020-08-21 14:38:56,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:38:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:56,742 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 14:38:56,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:56,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:56,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:38:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:56,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:38:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:56,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 14:38:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:56,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:56,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:38:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:56,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 14:38:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:56,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:56,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:56,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:38:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:56,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:38:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:56,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 14:38:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:56,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:56,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:56,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:38:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:56,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-21 14:38:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:56,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:56,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:56,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:38:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:56,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-21 14:38:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:56,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:56,992 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-08-21 14:38:56,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251516221] [2020-08-21 14:38:56,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:38:56,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 14:38:56,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750980935] [2020-08-21 14:38:56,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 14:38:56,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:38:56,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 14:38:56,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-21 14:38:56,996 INFO L87 Difference]: Start difference. First operand 550 states and 707 transitions. Second operand 10 states. [2020-08-21 14:38:57,134 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-21 14:38:57,691 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-08-21 14:38:58,408 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 14:38:59,033 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 14:38:59,202 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 14:39:00,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:39:00,167 INFO L93 Difference]: Finished difference Result 1271 states and 1638 transitions. [2020-08-21 14:39:00,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 14:39:00,168 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-08-21 14:39:00,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:39:00,172 INFO L225 Difference]: With dead ends: 1271 [2020-08-21 14:39:00,173 INFO L226 Difference]: Without dead ends: 746 [2020-08-21 14:39:00,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-08-21 14:39:00,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2020-08-21 14:39:00,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 430. [2020-08-21 14:39:00,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-08-21 14:39:00,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 531 transitions. [2020-08-21 14:39:00,220 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 531 transitions. Word has length 152 [2020-08-21 14:39:00,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:39:00,221 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 531 transitions. [2020-08-21 14:39:00,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 14:39:00,221 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 531 transitions. [2020-08-21 14:39:00,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-21 14:39:00,223 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:39:00,224 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] [2020-08-21 14:39:00,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 14:39:00,224 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:39:00,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:39:00,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1391356121, now seen corresponding path program 1 times [2020-08-21 14:39:00,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:39:00,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131420118] [2020-08-21 14:39:00,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:39:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:00,453 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 14:39:00,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:39:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:00,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:39:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:00,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:39:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:00,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:39:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:00,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 14:39:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:00,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 14:39:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:00,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:39:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:00,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:39:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:00,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 14:39:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:00,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 14:39:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:00,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 14:39:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:00,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 14:39:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:00,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 14:39:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:00,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 14:39:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:00,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 14:39:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:00,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 14:39:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:00,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 14:39:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:00,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 14:39:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:00,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 14:39:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:00,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:39:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:00,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-21 14:39:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:00,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:39:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:00,606 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-08-21 14:39:00,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131420118] [2020-08-21 14:39:00,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:39:00,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 14:39:00,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437266915] [2020-08-21 14:39:00,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 14:39:00,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:39:00,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 14:39:00,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-21 14:39:00,609 INFO L87 Difference]: Start difference. First operand 430 states and 531 transitions. Second operand 8 states. [2020-08-21 14:39:00,760 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-21 14:39:03,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:39:03,654 INFO L93 Difference]: Finished difference Result 980 states and 1265 transitions. [2020-08-21 14:39:03,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 14:39:03,655 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 151 [2020-08-21 14:39:03,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:39:03,659 INFO L225 Difference]: With dead ends: 980 [2020-08-21 14:39:03,659 INFO L226 Difference]: Without dead ends: 592 [2020-08-21 14:39:03,661 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 [2020-08-21 14:39:03,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-08-21 14:39:03,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 453. [2020-08-21 14:39:03,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-08-21 14:39:03,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 568 transitions. [2020-08-21 14:39:03,705 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 568 transitions. Word has length 151 [2020-08-21 14:39:03,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:39:03,706 INFO L479 AbstractCegarLoop]: Abstraction has 453 states and 568 transitions. [2020-08-21 14:39:03,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 14:39:03,706 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 568 transitions. [2020-08-21 14:39:03,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-21 14:39:03,708 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:39:03,708 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] [2020-08-21 14:39:03,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 14:39:03,709 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:39:03,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:39:03,709 INFO L82 PathProgramCache]: Analyzing trace with hash -642852378, now seen corresponding path program 2 times [2020-08-21 14:39:03,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:39:03,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831792558] [2020-08-21 14:39:03,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:39:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:03,916 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 14:39:03,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:39:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:03,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:39:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:03,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:39:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:03,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:39:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:04,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 14:39:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:04,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:39:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:04,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:39:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:04,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 14:39:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:04,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:39:04,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:04,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:39:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:04,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:39:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:04,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:39:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:04,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 14:39:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:04,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:39:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:04,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:39:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:04,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:39:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:04,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:39:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:04,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 14:39:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:04,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:39:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:04,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:39:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:04,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:39:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:04,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:39:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:04,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 14:39:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:04,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:39:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:39:04,131 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-21 14:39:04,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831792558] [2020-08-21 14:39:04,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:39:04,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 14:39:04,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490247861] [2020-08-21 14:39:04,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 14:39:04,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:39:04,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 14:39:04,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 14:39:04,134 INFO L87 Difference]: Start difference. First operand 453 states and 568 transitions. Second operand 7 states. [2020-08-21 14:39:04,278 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-21 14:39:04,536 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-08-21 14:39:04,709 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-08-21 14:39:06,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:39:06,659 INFO L93 Difference]: Finished difference Result 553 states and 710 transitions. [2020-08-21 14:39:06,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 14:39:06,660 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-08-21 14:39:06,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:39:06,661 INFO L225 Difference]: With dead ends: 553 [2020-08-21 14:39:06,661 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 14:39:06,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-21 14:39:06,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 14:39:06,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 14:39:06,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 14:39:06,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 14:39:06,665 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 164 [2020-08-21 14:39:06,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:39:06,665 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 14:39:06,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 14:39:06,665 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 14:39:06,665 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 14:39:06,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 14:39:06,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 14:39:06,920 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 7 [2020-08-21 14:39:10,547 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 12 [2020-08-21 14:39:10,924 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-21 14:39:11,037 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-21 14:39:11,177 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 25 [2020-08-21 14:39:11,428 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 38 [2020-08-21 14:39:11,540 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 18 [2020-08-21 14:39:11,674 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 21 [2020-08-21 14:39:11,858 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 8 [2020-08-21 14:39:12,103 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-21 14:39:12,365 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 8 [2020-08-21 14:39:12,468 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-21 14:39:12,655 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 12 [2020-08-21 14:39:12,762 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-21 14:39:13,032 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 38 [2020-08-21 14:39:13,237 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-21 14:39:13,432 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 21 [2020-08-21 14:39:13,534 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-21 14:39:13,789 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 136 [2020-08-21 14:39:14,141 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 12