/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 19:12:35,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:12:35,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:12:35,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:12:35,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:12:35,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:12:35,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:12:35,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:12:35,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:12:35,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:12:35,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:12:35,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:12:35,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:12:35,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:12:35,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:12:35,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:12:35,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:12:35,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:12:35,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:12:35,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:12:35,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:12:35,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:12:35,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:12:35,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:12:35,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 19:12:35,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 19:12:35,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 19:12:35,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 19:12:35,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 19:12:35,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 19:12:35,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 19:12:35,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 19:12:35,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 19:12:35,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 19:12:35,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 19:12:35,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 19:12:35,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 19:12:35,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 19:12:35,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:12:35,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:12:35,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:12:35,676 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-18 19:12:35,697 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:12:35,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:12:35,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:12:35,699 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:12:35,700 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:12:35,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:12:35,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:12:35,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:12:35,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:12:35,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:12:35,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:12:35,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:12:35,701 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:12:35,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:12:35,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:12:35,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:12:35,702 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:12:35,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:12:35,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:12:35,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:12:35,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:12:35,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:12:35,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:12:35,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:12:35,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:12:35,704 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:12:35,704 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 19:12:35,704 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 19:12:36,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:12:36,022 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:12:36,025 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:12:36,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:12:36,027 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:12:36,028 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-18 19:12:36,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8d9a9039/92c0ed32f3a14a0f93e668bf916416e2/FLAGeae15bfc5 [2020-08-18 19:12:36,694 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:12:36,695 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-18 19:12:36,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8d9a9039/92c0ed32f3a14a0f93e668bf916416e2/FLAGeae15bfc5 [2020-08-18 19:12:36,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8d9a9039/92c0ed32f3a14a0f93e668bf916416e2 [2020-08-18 19:12:36,948 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:12:36,950 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:12:36,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:12:36,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:12:36,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:12:36,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:12:36" (1/1) ... [2020-08-18 19:12:36,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fd2fa81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:36, skipping insertion in model container [2020-08-18 19:12:36,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:12:36" (1/1) ... [2020-08-18 19:12:36,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:12:37,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:12:37,457 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1323] [2020-08-18 19:12:37,458 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1324-1325] [2020-08-18 19:12:37,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:12:37,746 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:12:37,866 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1323] [2020-08-18 19:12:37,867 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1324-1325] [2020-08-18 19:12:37,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:12:38,025 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:12:38,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:38 WrapperNode [2020-08-18 19:12:38,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:12:38,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:12:38,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:12:38,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:12:38,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:38" (1/1) ... [2020-08-18 19:12:38,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:38" (1/1) ... [2020-08-18 19:12:38,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:38" (1/1) ... [2020-08-18 19:12:38,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:38" (1/1) ... [2020-08-18 19:12:38,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:38" (1/1) ... [2020-08-18 19:12:38,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:38" (1/1) ... [2020-08-18 19:12:38,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:38" (1/1) ... [2020-08-18 19:12:38,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:12:38,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:12:38,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:12:38,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:12:38,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:12:38,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:12:38,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:12:38,265 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-08-18 19:12:38,266 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-18 19:12:38,267 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2020-08-18 19:12:38,267 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2020-08-18 19:12:38,267 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-18 19:12:38,267 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-18 19:12:38,268 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_name [2020-08-18 19:12:38,268 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 19:12:38,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 19:12:38,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 19:12:38,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 19:12:38,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 19:12:38,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 19:12:38,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 19:12:38,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 19:12:38,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 19:12:38,272 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2020-08-18 19:12:38,273 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_allocate_port [2020-08-18 19:12:38,273 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_free_port [2020-08-18 19:12:38,273 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_name [2020-08-18 19:12:38,273 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_valid [2020-08-18 19:12:38,273 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_len [2020-08-18 19:12:38,274 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_start [2020-08-18 19:12:38,274 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_valid [2020-08-18 19:12:38,274 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_len [2020-08-18 19:12:38,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_isa_probe [2020-08-18 19:12:38,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_pnp_probe [2020-08-18 19:12:38,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_init [2020-08-18 19:12:38,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_exit [2020-08-18 19:12:38,275 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:12:38,275 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-18 19:12:38,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2020-08-18 19:12:38,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-18 19:12:38,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2020-08-18 19:12:38,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2020-08-18 19:12:38,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2020-08-18 19:12:38,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2020-08-18 19:12:38,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __gameport_register_port [2020-08-18 19:12:38,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-18 19:12:38,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-08-18 19:12:38,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-08-18 19:12:38,278 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_phys [2020-08-18 19:12:38,278 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_unregister_port [2020-08-18 19:12:38,279 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2020-08-18 19:12:38,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 19:12:38,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 19:12:38,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_1 [2020-08-18 19:12:38,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2020-08-18 19:12:38,279 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2020-08-18 19:12:38,280 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_get_resource [2020-08-18 19:12:38,280 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_register_driver [2020-08-18 19:12:38,280 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_unregister_driver [2020-08-18 19:12:38,280 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-18 19:12:38,281 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2020-08-18 19:12:38,281 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 19:12:38,281 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 19:12:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:12:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 19:12:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-18 19:12:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-18 19:12:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-08-18 19:12:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 19:12:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-18 19:12:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2020-08-18 19:12:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2020-08-18 19:12:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2020-08-18 19:12:38,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 19:12:38,284 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-08-18 19:12:38,285 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-08-18 19:12:38,285 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-18 19:12:38,286 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-18 19:12:38,286 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_name [2020-08-18 19:12:38,287 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 19:12:38,287 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2020-08-18 19:12:38,288 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-18 19:12:38,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2020-08-18 19:12:38,288 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 19:12:38,288 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 19:12:38,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:12:38,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 19:12:38,289 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 19:12:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 19:12:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 19:12:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 19:12:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 19:12:38,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 19:12:38,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 19:12:38,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 19:12:38,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 19:12:38,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 19:12:38,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 19:12:38,292 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2020-08-18 19:12:38,292 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2020-08-18 19:12:38,292 INFO L130 BoogieDeclarations]: Found specification of procedure __gameport_register_port [2020-08-18 19:12:38,292 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_unregister_port [2020-08-18 19:12:38,292 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_phys [2020-08-18 19:12:38,292 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_allocate_port [2020-08-18 19:12:38,293 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_free_port [2020-08-18 19:12:38,293 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_name [2020-08-18 19:12:38,293 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_get_resource [2020-08-18 19:12:38,293 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_valid [2020-08-18 19:12:38,293 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_len [2020-08-18 19:12:38,294 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_start [2020-08-18 19:12:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_valid [2020-08-18 19:12:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_len [2020-08-18 19:12:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_register_driver [2020-08-18 19:12:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_unregister_driver [2020-08-18 19:12:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_isa_probe [2020-08-18 19:12:38,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 19:12:38,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 19:12:38,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 19:12:38,299 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_pnp_probe [2020-08-18 19:12:38,300 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_init [2020-08-18 19:12:38,300 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_exit [2020-08-18 19:12:38,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 19:12:38,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 19:12:38,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_1 [2020-08-18 19:12:38,301 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:12:38,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2020-08-18 19:12:38,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-18 19:12:38,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2020-08-18 19:12:38,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2020-08-18 19:12:38,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2020-08-18 19:12:38,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2020-08-18 19:12:38,303 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 19:12:38,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 19:12:38,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:12:38,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 19:12:38,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 19:12:38,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:12:39,016 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 19:12:39,815 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:12:39,816 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 19:12:39,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:12:39 BoogieIcfgContainer [2020-08-18 19:12:39,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:12:39,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:12:39,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:12:39,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:12:39,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:12:36" (1/3) ... [2020-08-18 19:12:39,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@144c04d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:12:39, skipping insertion in model container [2020-08-18 19:12:39,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:38" (2/3) ... [2020-08-18 19:12:39,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@144c04d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:12:39, skipping insertion in model container [2020-08-18 19:12:39,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:12:39" (3/3) ... [2020-08-18 19:12:39,831 INFO L109 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-18 19:12:39,843 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:12:39,852 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:12:39,866 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:12:39,894 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:12:39,894 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:12:39,894 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:12:39,894 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:12:39,895 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:12:39,895 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:12:39,895 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:12:39,895 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:12:39,924 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states. [2020-08-18 19:12:39,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-18 19:12:39,940 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:12:39,942 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:12:39,942 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:12:39,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:12:39,949 INFO L82 PathProgramCache]: Analyzing trace with hash -2083768503, now seen corresponding path program 1 times [2020-08-18 19:12:39,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:12:39,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354319719] [2020-08-18 19:12:39,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:12:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:40,803 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 19:12:40,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:40,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:40,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:12:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:40,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:12:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:40,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 19:12:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:40,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 19:12:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:40,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:40,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 19:12:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:40,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 19:12:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:40,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 19:12:40,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:40,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 19:12:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:40,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 19:12:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:40,997 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 19:12:40,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354319719] [2020-08-18 19:12:41,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:12:41,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 19:12:41,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838692001] [2020-08-18 19:12:41,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 19:12:41,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:12:41,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 19:12:41,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:12:41,025 INFO L87 Difference]: Start difference. First operand 348 states. Second operand 10 states. [2020-08-18 19:12:41,206 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-18 19:12:42,260 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-18 19:12:43,371 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-18 19:12:43,533 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-18 19:12:43,734 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-18 19:12:43,921 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-18 19:12:45,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:12:45,928 INFO L93 Difference]: Finished difference Result 815 states and 1118 transitions. [2020-08-18 19:12:45,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 19:12:45,930 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-08-18 19:12:45,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:12:45,951 INFO L225 Difference]: With dead ends: 815 [2020-08-18 19:12:45,951 INFO L226 Difference]: Without dead ends: 429 [2020-08-18 19:12:45,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-08-18 19:12:45,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-08-18 19:12:46,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 306. [2020-08-18 19:12:46,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-08-18 19:12:46,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 386 transitions. [2020-08-18 19:12:46,084 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 386 transitions. Word has length 91 [2020-08-18 19:12:46,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:12:46,084 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 386 transitions. [2020-08-18 19:12:46,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 19:12:46,085 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 386 transitions. [2020-08-18 19:12:46,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 19:12:46,091 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:12:46,091 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:12:46,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:12:46,092 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:12:46,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:12:46,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1314856814, now seen corresponding path program 1 times [2020-08-18 19:12:46,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:12:46,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776507026] [2020-08-18 19:12:46,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:12:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:46,339 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 19:12:46,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:46,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:46,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:12:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:46,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:12:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:46,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 19:12:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:46,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 19:12:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:46,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:46,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:12:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:46,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 19:12:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:46,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 19:12:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:46,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 19:12:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:46,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 19:12:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:46,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 19:12:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:46,479 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 19:12:46,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776507026] [2020-08-18 19:12:46,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:12:46,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 19:12:46,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132592299] [2020-08-18 19:12:46,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 19:12:46,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:12:46,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 19:12:46,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 19:12:46,489 INFO L87 Difference]: Start difference. First operand 306 states and 386 transitions. Second operand 6 states. [2020-08-18 19:12:46,626 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-18 19:12:49,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:12:49,187 INFO L93 Difference]: Finished difference Result 722 states and 963 transitions. [2020-08-18 19:12:49,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 19:12:49,188 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-08-18 19:12:49,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:12:49,194 INFO L225 Difference]: With dead ends: 722 [2020-08-18 19:12:49,195 INFO L226 Difference]: Without dead ends: 441 [2020-08-18 19:12:49,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:12:49,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-08-18 19:12:49,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 308. [2020-08-18 19:12:49,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-08-18 19:12:49,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 388 transitions. [2020-08-18 19:12:49,267 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 388 transitions. Word has length 97 [2020-08-18 19:12:49,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:12:49,268 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 388 transitions. [2020-08-18 19:12:49,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 19:12:49,268 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 388 transitions. [2020-08-18 19:12:49,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-08-18 19:12:49,274 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:12:49,274 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:12:49,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:12:49,274 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:12:49,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:12:49,275 INFO L82 PathProgramCache]: Analyzing trace with hash -492581383, now seen corresponding path program 1 times [2020-08-18 19:12:49,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:12:49,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704232577] [2020-08-18 19:12:49,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:12:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:49,496 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 19:12:49,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:49,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:49,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:12:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:49,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:12:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:49,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 19:12:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:49,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:49,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:49,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:49,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:12:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:49,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 19:12:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:49,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:49,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:49,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:12:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:49,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 19:12:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:49,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:49,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:49,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:12:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:49,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 19:12:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:49,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:49,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:12:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:49,655 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-18 19:12:49,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704232577] [2020-08-18 19:12:49,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:12:49,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 19:12:49,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760291391] [2020-08-18 19:12:49,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 19:12:49,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:12:49,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 19:12:49,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 19:12:49,658 INFO L87 Difference]: Start difference. First operand 308 states and 388 transitions. Second operand 6 states. [2020-08-18 19:12:49,796 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-18 19:12:50,019 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-08-18 19:12:50,192 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-08-18 19:12:53,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:12:53,417 INFO L93 Difference]: Finished difference Result 945 states and 1246 transitions. [2020-08-18 19:12:53,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 19:12:53,418 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-08-18 19:12:53,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:12:53,424 INFO L225 Difference]: With dead ends: 945 [2020-08-18 19:12:53,425 INFO L226 Difference]: Without dead ends: 662 [2020-08-18 19:12:53,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:12:53,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2020-08-18 19:12:53,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 489. [2020-08-18 19:12:53,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-08-18 19:12:53,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 617 transitions. [2020-08-18 19:12:53,484 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 617 transitions. Word has length 123 [2020-08-18 19:12:53,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:12:53,485 INFO L479 AbstractCegarLoop]: Abstraction has 489 states and 617 transitions. [2020-08-18 19:12:53,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 19:12:53,485 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 617 transitions. [2020-08-18 19:12:53,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-08-18 19:12:53,488 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:12:53,488 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:12:53,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:12:53,489 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:12:53,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:12:53,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1067393612, now seen corresponding path program 1 times [2020-08-18 19:12:53,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:12:53,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356733773] [2020-08-18 19:12:53,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:12:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:53,732 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 19:12:53,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:53,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:53,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:12:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:53,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:12:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:53,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 19:12:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:53,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 19:12:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:53,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:53,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:12:53,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:53,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 19:12:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:53,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 19:12:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:53,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 19:12:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:53,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 19:12:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:53,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 19:12:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:53,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 19:12:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:53,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 19:12:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:53,896 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-08-18 19:12:53,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356733773] [2020-08-18 19:12:53,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:12:53,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 19:12:53,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421220543] [2020-08-18 19:12:53,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 19:12:53,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:12:53,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 19:12:53,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:12:53,900 INFO L87 Difference]: Start difference. First operand 489 states and 617 transitions. Second operand 7 states. [2020-08-18 19:12:54,027 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-18 19:12:56,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:12:56,747 INFO L93 Difference]: Finished difference Result 1237 states and 1674 transitions. [2020-08-18 19:12:56,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 19:12:56,747 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-08-18 19:12:56,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:12:56,756 INFO L225 Difference]: With dead ends: 1237 [2020-08-18 19:12:56,756 INFO L226 Difference]: Without dead ends: 773 [2020-08-18 19:12:56,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:12:56,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-08-18 19:12:56,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 541. [2020-08-18 19:12:56,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2020-08-18 19:12:56,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 699 transitions. [2020-08-18 19:12:56,848 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 699 transitions. Word has length 110 [2020-08-18 19:12:56,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:12:56,848 INFO L479 AbstractCegarLoop]: Abstraction has 541 states and 699 transitions. [2020-08-18 19:12:56,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 19:12:56,849 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 699 transitions. [2020-08-18 19:12:56,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 19:12:56,854 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:12:56,854 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:12:56,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 19:12:56,855 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:12:56,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:12:56,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1281815870, now seen corresponding path program 1 times [2020-08-18 19:12:56,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:12:56,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893364309] [2020-08-18 19:12:56,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:12:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:57,092 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 19:12:57,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:57,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:57,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:12:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:57,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:12:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:57,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 19:12:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:57,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:57,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 19:12:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:57,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:57,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:57,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:12:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:57,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 19:12:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:57,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:57,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:57,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:12:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:57,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 19:12:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:57,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:57,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:57,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:12:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:57,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 19:12:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:57,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:57,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:12:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:57,389 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-18 19:12:57,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893364309] [2020-08-18 19:12:57,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:12:57,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:12:57,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619281683] [2020-08-18 19:12:57,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:12:57,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:12:57,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:12:57,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:12:57,400 INFO L87 Difference]: Start difference. First operand 541 states and 699 transitions. Second operand 9 states. [2020-08-18 19:12:57,611 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-18 19:12:58,257 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-08-18 19:13:00,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:13:00,929 INFO L93 Difference]: Finished difference Result 1246 states and 1663 transitions. [2020-08-18 19:13:00,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 19:13:00,930 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 143 [2020-08-18 19:13:00,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:13:00,935 INFO L225 Difference]: With dead ends: 1246 [2020-08-18 19:13:00,935 INFO L226 Difference]: Without dead ends: 708 [2020-08-18 19:13:00,938 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 [2020-08-18 19:13:00,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-08-18 19:13:00,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 538. [2020-08-18 19:13:00,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-08-18 19:13:00,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 692 transitions. [2020-08-18 19:13:00,992 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 692 transitions. Word has length 143 [2020-08-18 19:13:00,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:13:00,993 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 692 transitions. [2020-08-18 19:13:00,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:13:00,993 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 692 transitions. [2020-08-18 19:13:00,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 19:13:00,996 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:13:00,996 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:13:00,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 19:13:00,996 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:13:00,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:13:00,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1536881969, now seen corresponding path program 1 times [2020-08-18 19:13:00,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:13:00,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074471528] [2020-08-18 19:13:00,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:13:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:01,240 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 19:13:01,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:13:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:01,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:13:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:01,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:13:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:01,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:13:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:01,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 19:13:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:01,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:01,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:13:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:01,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 19:13:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:01,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:01,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:01,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:13:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:01,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 19:13:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:01,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:01,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:01,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:13:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:01,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 19:13:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:01,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:01,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:01,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:13:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:01,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 19:13:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:01,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:01,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:13:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:01,481 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-18 19:13:01,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074471528] [2020-08-18 19:13:01,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:13:01,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 19:13:01,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527782870] [2020-08-18 19:13:01,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 19:13:01,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:13:01,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 19:13:01,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:13:01,484 INFO L87 Difference]: Start difference. First operand 538 states and 692 transitions. Second operand 10 states. [2020-08-18 19:13:01,620 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-18 19:13:02,330 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 19:13:02,501 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 19:13:05,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:13:05,078 INFO L93 Difference]: Finished difference Result 1233 states and 1636 transitions. [2020-08-18 19:13:05,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 19:13:05,079 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-08-18 19:13:05,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:13:05,084 INFO L225 Difference]: With dead ends: 1233 [2020-08-18 19:13:05,084 INFO L226 Difference]: Without dead ends: 702 [2020-08-18 19:13:05,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-08-18 19:13:05,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2020-08-18 19:13:05,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 538. [2020-08-18 19:13:05,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-08-18 19:13:05,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 690 transitions. [2020-08-18 19:13:05,141 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 690 transitions. Word has length 152 [2020-08-18 19:13:05,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:13:05,141 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 690 transitions. [2020-08-18 19:13:05,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 19:13:05,141 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 690 transitions. [2020-08-18 19:13:05,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-18 19:13:05,145 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:13:05,145 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:13:05,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 19:13:05,145 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:13:05,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:13:05,146 INFO L82 PathProgramCache]: Analyzing trace with hash -968590774, now seen corresponding path program 1 times [2020-08-18 19:13:05,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:13:05,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535751213] [2020-08-18 19:13:05,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:13:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:05,481 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 19:13:05,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:13:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:05,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:13:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:05,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:13:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:05,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:13:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:05,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 19:13:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:05,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:05,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:13:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:05,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 19:13:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:05,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:05,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:05,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:05,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:13:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:05,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 19:13:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:05,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:05,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:05,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:13:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:05,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 19:13:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:05,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:05,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:05,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:13:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:05,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 19:13:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:05,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:05,940 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-08-18 19:13:05,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535751213] [2020-08-18 19:13:05,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:13:05,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 19:13:05,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013594730] [2020-08-18 19:13:05,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 19:13:05,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:13:05,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 19:13:05,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-08-18 19:13:05,943 INFO L87 Difference]: Start difference. First operand 538 states and 690 transitions. Second operand 13 states. [2020-08-18 19:13:06,091 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-18 19:13:06,848 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 19:13:07,319 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 19:13:07,531 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 19:13:07,724 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 19:13:07,903 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 19:13:08,094 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-08-18 19:13:08,295 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-08-18 19:13:10,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:13:10,111 INFO L93 Difference]: Finished difference Result 1217 states and 1615 transitions. [2020-08-18 19:13:10,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 19:13:10,112 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 146 [2020-08-18 19:13:10,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:13:10,122 INFO L225 Difference]: With dead ends: 1217 [2020-08-18 19:13:10,122 INFO L226 Difference]: Without dead ends: 704 [2020-08-18 19:13:10,126 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 [2020-08-18 19:13:10,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-08-18 19:13:10,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 545. [2020-08-18 19:13:10,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-08-18 19:13:10,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 702 transitions. [2020-08-18 19:13:10,242 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 702 transitions. Word has length 146 [2020-08-18 19:13:10,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:13:10,246 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 702 transitions. [2020-08-18 19:13:10,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 19:13:10,247 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 702 transitions. [2020-08-18 19:13:10,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-08-18 19:13:10,253 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:13:10,253 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:13:10,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 19:13:10,254 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:13:10,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:13:10,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1538409515, now seen corresponding path program 1 times [2020-08-18 19:13:10,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:13:10,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159443013] [2020-08-18 19:13:10,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:13:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:10,486 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 19:13:10,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:13:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:10,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:13:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:10,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:13:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:10,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:13:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:10,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 19:13:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:10,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:10,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:13:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:10,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 19:13:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:10,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:10,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:10,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:13:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:10,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 19:13:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:10,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:10,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:10,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:13:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:10,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:13:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:10,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-18 19:13:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:10,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:10,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:10,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:13:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:10,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:13:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:10,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 19:13:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:10,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:10,754 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-08-18 19:13:10,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159443013] [2020-08-18 19:13:10,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:13:10,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 19:13:10,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912980599] [2020-08-18 19:13:10,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 19:13:10,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:13:10,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 19:13:10,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:13:10,759 INFO L87 Difference]: Start difference. First operand 545 states and 702 transitions. Second operand 11 states. [2020-08-18 19:13:10,901 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-18 19:13:11,983 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-08-18 19:13:12,176 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 19:13:12,346 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 19:13:12,531 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 19:13:12,723 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 19:13:14,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:13:14,507 INFO L93 Difference]: Finished difference Result 1168 states and 1528 transitions. [2020-08-18 19:13:14,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 19:13:14,508 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 158 [2020-08-18 19:13:14,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:13:14,512 INFO L225 Difference]: With dead ends: 1168 [2020-08-18 19:13:14,513 INFO L226 Difference]: Without dead ends: 648 [2020-08-18 19:13:14,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-08-18 19:13:14,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-08-18 19:13:14,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 550. [2020-08-18 19:13:14,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-08-18 19:13:14,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 707 transitions. [2020-08-18 19:13:14,565 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 707 transitions. Word has length 158 [2020-08-18 19:13:14,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:13:14,565 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 707 transitions. [2020-08-18 19:13:14,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 19:13:14,566 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 707 transitions. [2020-08-18 19:13:14,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-08-18 19:13:14,568 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:13:14,569 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:13:14,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 19:13:14,569 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:13:14,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:13:14,569 INFO L82 PathProgramCache]: Analyzing trace with hash -432995670, now seen corresponding path program 1 times [2020-08-18 19:13:14,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:13:14,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842485742] [2020-08-18 19:13:14,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:13:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:14,799 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 19:13:14,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:13:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:14,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:13:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:14,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:13:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:14,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:13:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:14,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 19:13:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:14,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:14,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:13:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:14,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 19:13:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:14,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:14,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:14,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:13:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:14,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:13:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:14,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 19:13:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:14,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:14,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:14,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:13:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:14,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-18 19:13:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:14,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:14,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:14,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:13:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:14,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 19:13:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:14,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:14,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:13:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:15,022 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-08-18 19:13:15,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842485742] [2020-08-18 19:13:15,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:13:15,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 19:13:15,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840987973] [2020-08-18 19:13:15,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 19:13:15,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:13:15,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 19:13:15,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:13:15,025 INFO L87 Difference]: Start difference. First operand 550 states and 707 transitions. Second operand 10 states. [2020-08-18 19:13:15,194 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-18 19:13:16,083 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-08-18 19:13:16,995 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 19:13:17,883 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 19:13:18,051 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 19:13:19,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:13:19,366 INFO L93 Difference]: Finished difference Result 1271 states and 1638 transitions. [2020-08-18 19:13:19,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 19:13:19,371 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 158 [2020-08-18 19:13:19,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:13:19,376 INFO L225 Difference]: With dead ends: 1271 [2020-08-18 19:13:19,377 INFO L226 Difference]: Without dead ends: 746 [2020-08-18 19:13:19,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-08-18 19:13:19,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2020-08-18 19:13:19,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 430. [2020-08-18 19:13:19,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-08-18 19:13:19,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 531 transitions. [2020-08-18 19:13:19,427 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 531 transitions. Word has length 158 [2020-08-18 19:13:19,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:13:19,428 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 531 transitions. [2020-08-18 19:13:19,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 19:13:19,428 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 531 transitions. [2020-08-18 19:13:19,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-18 19:13:19,431 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:13:19,431 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:13:19,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 19:13:19,431 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:13:19,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:13:19,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1391356121, now seen corresponding path program 1 times [2020-08-18 19:13:19,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:13:19,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70832114] [2020-08-18 19:13:19,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:13:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:19,623 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 19:13:19,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:13:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:19,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:13:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:19,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:13:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:19,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:13:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:19,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 19:13:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:19,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 19:13:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:19,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:19,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:13:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:19,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 19:13:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:19,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 19:13:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:19,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 19:13:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:19,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 19:13:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:19,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 19:13:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:19,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 19:13:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:19,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 19:13:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:19,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 19:13:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:19,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 19:13:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:19,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 19:13:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:19,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 19:13:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:19,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:19,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 19:13:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:19,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:19,784 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-08-18 19:13:19,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70832114] [2020-08-18 19:13:19,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:13:19,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-18 19:13:19,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231988161] [2020-08-18 19:13:19,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 19:13:19,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:13:19,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 19:13:19,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:13:19,786 INFO L87 Difference]: Start difference. First operand 430 states and 531 transitions. Second operand 8 states. [2020-08-18 19:13:19,936 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-18 19:13:22,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:13:22,952 INFO L93 Difference]: Finished difference Result 980 states and 1265 transitions. [2020-08-18 19:13:22,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 19:13:22,952 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 151 [2020-08-18 19:13:22,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:13:22,957 INFO L225 Difference]: With dead ends: 980 [2020-08-18 19:13:22,957 INFO L226 Difference]: Without dead ends: 592 [2020-08-18 19:13:22,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:13:22,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-08-18 19:13:23,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 453. [2020-08-18 19:13:23,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-08-18 19:13:23,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 568 transitions. [2020-08-18 19:13:23,007 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 568 transitions. Word has length 151 [2020-08-18 19:13:23,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:13:23,007 INFO L479 AbstractCegarLoop]: Abstraction has 453 states and 568 transitions. [2020-08-18 19:13:23,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 19:13:23,007 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 568 transitions. [2020-08-18 19:13:23,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-18 19:13:23,010 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:13:23,010 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:13:23,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 19:13:23,011 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:13:23,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:13:23,011 INFO L82 PathProgramCache]: Analyzing trace with hash -642852378, now seen corresponding path program 2 times [2020-08-18 19:13:23,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:13:23,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76391107] [2020-08-18 19:13:23,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:13:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:23,305 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 19:13:23,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:13:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:23,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:13:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:23,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:13:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:23,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:13:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:23,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 19:13:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:23,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:23,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:13:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:23,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 19:13:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:23,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:23,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:23,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:13:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:23,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:13:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:23,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 19:13:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:23,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:23,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:23,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:13:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:23,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:13:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:23,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 19:13:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:23,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:23,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:23,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:13:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:23,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:13:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:23,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 19:13:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:23,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:23,557 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-18 19:13:23,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76391107] [2020-08-18 19:13:23,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:13:23,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 19:13:23,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101212186] [2020-08-18 19:13:23,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 19:13:23,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:13:23,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 19:13:23,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:13:23,559 INFO L87 Difference]: Start difference. First operand 453 states and 568 transitions. Second operand 7 states. [2020-08-18 19:13:23,689 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-18 19:13:23,919 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-08-18 19:13:24,093 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-08-18 19:13:26,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:13:26,104 INFO L93 Difference]: Finished difference Result 553 states and 710 transitions. [2020-08-18 19:13:26,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 19:13:26,105 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-08-18 19:13:26,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:13:26,106 INFO L225 Difference]: With dead ends: 553 [2020-08-18 19:13:26,106 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 19:13:26,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:13:26,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 19:13:26,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 19:13:26,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 19:13:26,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 19:13:26,109 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 164 [2020-08-18 19:13:26,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:13:26,110 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 19:13:26,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 19:13:26,110 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 19:13:26,110 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 19:13:26,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 19:13:26,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 19:13:29,842 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 1 [2020-08-18 19:13:30,124 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 12 [2020-08-18 19:13:30,258 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-18 19:13:30,500 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-18 19:13:30,613 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-18 19:13:30,760 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 25 [2020-08-18 19:13:31,033 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 38 [2020-08-18 19:13:31,144 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 18 [2020-08-18 19:13:31,432 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 8 [2020-08-18 19:13:31,665 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-18 19:13:31,933 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 8 [2020-08-18 19:13:32,038 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-18 19:13:32,225 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 12 [2020-08-18 19:13:32,332 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12