/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 20:16:35,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 20:16:35,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 20:16:35,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 20:16:35,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 20:16:35,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 20:16:35,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 20:16:35,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 20:16:35,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 20:16:35,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 20:16:35,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 20:16:35,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 20:16:35,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 20:16:35,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 20:16:35,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 20:16:35,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 20:16:35,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 20:16:35,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 20:16:35,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 20:16:35,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 20:16:35,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 20:16:35,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 20:16:35,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 20:16:35,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 20:16:35,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 20:16:35,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 20:16:35,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 20:16:35,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 20:16:35,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 20:16:35,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 20:16:35,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 20:16:35,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 20:16:35,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 20:16:35,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 20:16:35,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 20:16:35,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 20:16:35,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 20:16:35,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 20:16:35,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 20:16:35,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 20:16:35,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 20:16:35,314 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-21 20:16:35,336 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 20:16:35,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 20:16:35,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 20:16:35,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 20:16:35,338 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 20:16:35,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 20:16:35,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 20:16:35,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 20:16:35,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 20:16:35,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 20:16:35,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 20:16:35,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 20:16:35,340 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 20:16:35,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 20:16:35,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 20:16:35,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 20:16:35,341 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 20:16:35,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 20:16:35,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:16:35,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 20:16:35,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 20:16:35,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 20:16:35,342 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 20:16:35,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 20:16:35,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 20:16:35,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 20:16:35,343 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-21 20:16:35,343 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=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-08-21 20:16:35,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 20:16:35,645 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 20:16:35,648 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 20:16:35,649 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 20:16:35,650 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 20:16:35,651 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-21 20:16:35,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/989e01b9a/88374e48c0f64ceabe536facc990b173/FLAGe4637c758 [2020-08-21 20:16:36,306 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 20:16:36,307 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-21 20:16:36,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/989e01b9a/88374e48c0f64ceabe536facc990b173/FLAGe4637c758 [2020-08-21 20:16:36,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/989e01b9a/88374e48c0f64ceabe536facc990b173 [2020-08-21 20:16:36,558 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 20:16:36,560 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 20:16:36,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 20:16:36,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 20:16:36,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 20:16:36,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:16:36" (1/1) ... [2020-08-21 20:16:36,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cdac4dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:16:36, skipping insertion in model container [2020-08-21 20:16:36,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:16:36" (1/1) ... [2020-08-21 20:16:36,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 20:16:36,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 20:16:37,046 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1323] [2020-08-21 20:16:37,047 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1324-1325] [2020-08-21 20:16:37,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:16:37,512 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 20:16:37,572 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1323] [2020-08-21 20:16:37,572 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1324-1325] [2020-08-21 20:16:37,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:16:37,715 INFO L208 MainTranslator]: Completed translation [2020-08-21 20:16:37,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:16:37 WrapperNode [2020-08-21 20:16:37,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 20:16:37,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 20:16:37,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 20:16:37,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 20:16:37,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:16:37" (1/1) ... [2020-08-21 20:16:37,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:16:37" (1/1) ... [2020-08-21 20:16:37,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:16:37" (1/1) ... [2020-08-21 20:16:37,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:16:37" (1/1) ... [2020-08-21 20:16:37,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:16:37" (1/1) ... [2020-08-21 20:16:37,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:16:37" (1/1) ... [2020-08-21 20:16:37,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:16:37" (1/1) ... [2020-08-21 20:16:37,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 20:16:37,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 20:16:37,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 20:16:37,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 20:16:37,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:16:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:16:37,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 20:16:37,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 20:16:37,971 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-08-21 20:16:37,971 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-21 20:16:37,971 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2020-08-21 20:16:37,971 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2020-08-21 20:16:37,972 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-21 20:16:37,972 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-21 20:16:37,972 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_name [2020-08-21 20:16:37,972 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 20:16:37,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-21 20:16:37,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-21 20:16:37,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-21 20:16:37,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-21 20:16:37,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-21 20:16:37,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-21 20:16:37,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-21 20:16:37,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-21 20:16:37,974 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2020-08-21 20:16:37,975 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_allocate_port [2020-08-21 20:16:37,975 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_free_port [2020-08-21 20:16:37,975 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_name [2020-08-21 20:16:37,976 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_valid [2020-08-21 20:16:37,976 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_len [2020-08-21 20:16:37,976 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_start [2020-08-21 20:16:37,976 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_valid [2020-08-21 20:16:37,976 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_len [2020-08-21 20:16:37,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_isa_probe [2020-08-21 20:16:37,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_pnp_probe [2020-08-21 20:16:37,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_init [2020-08-21 20:16:37,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_exit [2020-08-21 20:16:37,977 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 20:16:37,977 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-21 20:16:37,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2020-08-21 20:16:37,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-21 20:16:37,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2020-08-21 20:16:37,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2020-08-21 20:16:37,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2020-08-21 20:16:37,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2020-08-21 20:16:37,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __gameport_register_port [2020-08-21 20:16:37,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-21 20:16:37,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-08-21 20:16:37,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-08-21 20:16:37,979 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_phys [2020-08-21 20:16:37,980 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_unregister_port [2020-08-21 20:16:37,980 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2020-08-21 20:16:37,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-21 20:16:37,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-21 20:16:37,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_1 [2020-08-21 20:16:37,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2020-08-21 20:16:37,981 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2020-08-21 20:16:37,981 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_get_resource [2020-08-21 20:16:37,981 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_register_driver [2020-08-21 20:16:37,981 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_unregister_driver [2020-08-21 20:16:37,982 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-21 20:16:37,982 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2020-08-21 20:16:37,982 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-21 20:16:37,982 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-21 20:16:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 20:16:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-21 20:16:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-21 20:16:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-21 20:16:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-08-21 20:16:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 20:16:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-21 20:16:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2020-08-21 20:16:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2020-08-21 20:16:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2020-08-21 20:16:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 20:16:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-08-21 20:16:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-08-21 20:16:37,986 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-21 20:16:37,986 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-21 20:16:37,986 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_name [2020-08-21 20:16:37,986 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-21 20:16:37,986 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2020-08-21 20:16:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-21 20:16:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2020-08-21 20:16:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 20:16:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 20:16:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 20:16:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-21 20:16:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 20:16:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 20:16:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-21 20:16:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 20:16:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-21 20:16:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-21 20:16:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-21 20:16:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-21 20:16:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-21 20:16:37,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-21 20:16:37,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-21 20:16:37,990 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2020-08-21 20:16:37,990 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2020-08-21 20:16:37,991 INFO L130 BoogieDeclarations]: Found specification of procedure __gameport_register_port [2020-08-21 20:16:37,991 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_unregister_port [2020-08-21 20:16:37,991 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_phys [2020-08-21 20:16:37,991 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_allocate_port [2020-08-21 20:16:37,991 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_free_port [2020-08-21 20:16:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_name [2020-08-21 20:16:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_get_resource [2020-08-21 20:16:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_valid [2020-08-21 20:16:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_len [2020-08-21 20:16:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_start [2020-08-21 20:16:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_valid [2020-08-21 20:16:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_len [2020-08-21 20:16:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_register_driver [2020-08-21 20:16:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_unregister_driver [2020-08-21 20:16:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_isa_probe [2020-08-21 20:16:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 20:16:37,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 20:16:37,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 20:16:37,994 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_pnp_probe [2020-08-21 20:16:37,994 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_init [2020-08-21 20:16:37,994 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_exit [2020-08-21 20:16:37,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-21 20:16:37,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-21 20:16:37,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_1 [2020-08-21 20:16:37,995 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 20:16:37,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2020-08-21 20:16:37,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-21 20:16:37,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2020-08-21 20:16:37,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2020-08-21 20:16:37,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2020-08-21 20:16:37,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2020-08-21 20:16:37,996 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 20:16:37,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 20:16:37,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 20:16:37,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 20:16:37,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 20:16:37,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 20:16:38,659 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-21 20:16:39,243 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 20:16:39,243 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 20:16:39,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:16:39 BoogieIcfgContainer [2020-08-21 20:16:39,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 20:16:39,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 20:16:39,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 20:16:39,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 20:16:39,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 08:16:36" (1/3) ... [2020-08-21 20:16:39,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1b8bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:16:39, skipping insertion in model container [2020-08-21 20:16:39,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:16:37" (2/3) ... [2020-08-21 20:16:39,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1b8bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:16:39, skipping insertion in model container [2020-08-21 20:16:39,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:16:39" (3/3) ... [2020-08-21 20:16:39,256 INFO L109 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-21 20:16:39,266 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 20:16:39,274 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 20:16:39,287 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 20:16:39,312 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 20:16:39,312 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 20:16:39,312 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 20:16:39,312 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 20:16:39,312 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 20:16:39,313 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 20:16:39,313 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 20:16:39,313 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 20:16:39,338 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states. [2020-08-21 20:16:39,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-21 20:16:39,352 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:16:39,354 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:16:39,354 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:16:39,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:16:39,360 INFO L82 PathProgramCache]: Analyzing trace with hash -2083768503, now seen corresponding path program 1 times [2020-08-21 20:16:39,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:16:39,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396318953] [2020-08-21 20:16:39,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:16:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:40,124 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 20:16:40,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:16:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:40,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:16:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:40,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:16:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:40,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:16:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:40,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 20:16:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:40,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 20:16:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:40,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:40,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 20:16:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:40,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 20:16:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:40,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-21 20:16:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:40,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 20:16:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:40,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 20:16:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:40,378 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 20:16:40,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396318953] [2020-08-21 20:16:40,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:16:40,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 20:16:40,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358531621] [2020-08-21 20:16:40,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 20:16:40,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:16:40,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 20:16:40,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-21 20:16:40,405 INFO L87 Difference]: Start difference. First operand 348 states. Second operand 10 states. [2020-08-21 20:16:40,577 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-21 20:16:41,469 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-21 20:16:42,621 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-21 20:16:42,777 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-21 20:16:42,940 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-21 20:16:43,088 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-21 20:16:44,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:16:44,849 INFO L93 Difference]: Finished difference Result 815 states and 1118 transitions. [2020-08-21 20:16:44,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 20:16:44,851 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-08-21 20:16:44,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:16:44,870 INFO L225 Difference]: With dead ends: 815 [2020-08-21 20:16:44,871 INFO L226 Difference]: Without dead ends: 429 [2020-08-21 20:16:44,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-08-21 20:16:44,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-08-21 20:16:44,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 306. [2020-08-21 20:16:44,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-08-21 20:16:44,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 386 transitions. [2020-08-21 20:16:44,992 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 386 transitions. Word has length 91 [2020-08-21 20:16:44,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:16:44,992 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 386 transitions. [2020-08-21 20:16:44,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 20:16:44,993 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 386 transitions. [2020-08-21 20:16:44,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 20:16:44,998 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:16:44,999 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:16:44,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 20:16:44,999 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:16:44,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:16:45,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1314856814, now seen corresponding path program 1 times [2020-08-21 20:16:45,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:16:45,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134482334] [2020-08-21 20:16:45,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:16:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:45,247 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 20:16:45,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:16:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:45,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:16:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:45,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:16:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:45,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:16:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:45,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 20:16:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:45,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 20:16:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:45,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:45,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:16:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:45,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 20:16:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:45,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 20:16:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:45,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 20:16:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:45,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 20:16:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:45,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 20:16:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:45,363 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 20:16:45,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134482334] [2020-08-21 20:16:45,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:16:45,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 20:16:45,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352287694] [2020-08-21 20:16:45,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 20:16:45,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:16:45,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 20:16:45,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 20:16:45,368 INFO L87 Difference]: Start difference. First operand 306 states and 386 transitions. Second operand 6 states. [2020-08-21 20:16:45,527 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-21 20:16:47,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:16:47,899 INFO L93 Difference]: Finished difference Result 722 states and 963 transitions. [2020-08-21 20:16:47,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 20:16:47,900 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-08-21 20:16:47,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:16:47,906 INFO L225 Difference]: With dead ends: 722 [2020-08-21 20:16:47,907 INFO L226 Difference]: Without dead ends: 441 [2020-08-21 20:16:47,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-08-21 20:16:47,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-08-21 20:16:47,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 308. [2020-08-21 20:16:47,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-08-21 20:16:47,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 388 transitions. [2020-08-21 20:16:47,964 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 388 transitions. Word has length 97 [2020-08-21 20:16:47,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:16:47,965 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 388 transitions. [2020-08-21 20:16:47,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 20:16:47,965 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 388 transitions. [2020-08-21 20:16:47,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-08-21 20:16:47,970 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:16:47,971 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:16:47,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 20:16:47,971 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:16:47,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:16:47,972 INFO L82 PathProgramCache]: Analyzing trace with hash -492581383, now seen corresponding path program 1 times [2020-08-21 20:16:47,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:16:47,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058579203] [2020-08-21 20:16:47,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:16:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:48,166 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 20:16:48,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:16:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:48,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:16:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:48,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:16:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:48,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:16:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:48,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 20:16:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:48,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:48,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:48,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:16:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:48,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 20:16:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:48,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:48,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:48,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:16:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:48,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 20:16:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:48,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:48,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:48,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:16:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:48,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 20:16:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:48,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:48,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:16:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:48,408 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-21 20:16:48,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058579203] [2020-08-21 20:16:48,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:16:48,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 20:16:48,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336858995] [2020-08-21 20:16:48,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 20:16:48,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:16:48,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 20:16:48,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 20:16:48,413 INFO L87 Difference]: Start difference. First operand 308 states and 388 transitions. Second operand 6 states. [2020-08-21 20:16:48,533 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-21 20:16:48,737 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-08-21 20:16:48,894 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-08-21 20:16:51,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:16:51,854 INFO L93 Difference]: Finished difference Result 945 states and 1246 transitions. [2020-08-21 20:16:51,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 20:16:51,857 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-08-21 20:16:51,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:16:51,863 INFO L225 Difference]: With dead ends: 945 [2020-08-21 20:16:51,863 INFO L226 Difference]: Without dead ends: 662 [2020-08-21 20:16:51,864 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 [2020-08-21 20:16:51,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2020-08-21 20:16:51,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 489. [2020-08-21 20:16:51,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-08-21 20:16:51,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 617 transitions. [2020-08-21 20:16:51,935 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 617 transitions. Word has length 123 [2020-08-21 20:16:51,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:16:51,938 INFO L479 AbstractCegarLoop]: Abstraction has 489 states and 617 transitions. [2020-08-21 20:16:51,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 20:16:51,938 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 617 transitions. [2020-08-21 20:16:51,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-08-21 20:16:51,941 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:16:51,941 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:16:51,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 20:16:51,941 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:16:51,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:16:51,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1067393612, now seen corresponding path program 1 times [2020-08-21 20:16:51,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:16:51,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548163715] [2020-08-21 20:16:51,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:16:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:52,160 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 20:16:52,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:16:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:52,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:16:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:52,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:16:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:52,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:16:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:52,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 20:16:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:52,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 20:16:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:52,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:52,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:16:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:52,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 20:16:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:52,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 20:16:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:52,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 20:16:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:52,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 20:16:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:52,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 20:16:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:52,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 20:16:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:52,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 20:16:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:52,279 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-08-21 20:16:52,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548163715] [2020-08-21 20:16:52,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:16:52,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 20:16:52,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012671325] [2020-08-21 20:16:52,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 20:16:52,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:16:52,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 20:16:52,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 20:16:52,281 INFO L87 Difference]: Start difference. First operand 489 states and 617 transitions. Second operand 7 states. [2020-08-21 20:16:52,424 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-21 20:16:55,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:16:55,213 INFO L93 Difference]: Finished difference Result 1237 states and 1674 transitions. [2020-08-21 20:16:55,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 20:16:55,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-08-21 20:16:55,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:16:55,224 INFO L225 Difference]: With dead ends: 1237 [2020-08-21 20:16:55,224 INFO L226 Difference]: Without dead ends: 773 [2020-08-21 20:16:55,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-21 20:16:55,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-08-21 20:16:55,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 541. [2020-08-21 20:16:55,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2020-08-21 20:16:55,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 699 transitions. [2020-08-21 20:16:55,359 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 699 transitions. Word has length 110 [2020-08-21 20:16:55,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:16:55,359 INFO L479 AbstractCegarLoop]: Abstraction has 541 states and 699 transitions. [2020-08-21 20:16:55,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 20:16:55,360 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 699 transitions. [2020-08-21 20:16:55,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-21 20:16:55,362 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:16:55,362 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] [2020-08-21 20:16:55,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 20:16:55,363 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:16:55,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:16:55,363 INFO L82 PathProgramCache]: Analyzing trace with hash 790920921, now seen corresponding path program 1 times [2020-08-21 20:16:55,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:16:55,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825610146] [2020-08-21 20:16:55,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:16:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:55,575 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 20:16:55,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:16:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:55,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:16:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:55,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:16:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:55,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:16:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:55,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 20:16:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:55,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:55,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 20:16:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:55,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:55,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:55,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:16:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:55,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 20:16:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:55,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:55,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:55,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:16:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:55,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 20:16:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:55,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:55,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:55,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:16:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:55,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 20:16:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:55,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:55,872 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-21 20:16:55,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825610146] [2020-08-21 20:16:55,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:16:55,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 20:16:55,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64787632] [2020-08-21 20:16:55,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 20:16:55,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:16:55,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 20:16:55,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-21 20:16:55,883 INFO L87 Difference]: Start difference. First operand 541 states and 699 transitions. Second operand 9 states. [2020-08-21 20:16:56,086 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-21 20:16:56,752 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-08-21 20:16:58,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:16:58,542 INFO L93 Difference]: Finished difference Result 1246 states and 1663 transitions. [2020-08-21 20:16:58,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 20:16:58,543 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2020-08-21 20:16:58,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:16:58,548 INFO L225 Difference]: With dead ends: 1246 [2020-08-21 20:16:58,548 INFO L226 Difference]: Without dead ends: 708 [2020-08-21 20:16:58,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-08-21 20:16:58,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-08-21 20:16:58,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 538. [2020-08-21 20:16:58,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-08-21 20:16:58,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 692 transitions. [2020-08-21 20:16:58,603 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 692 transitions. Word has length 137 [2020-08-21 20:16:58,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:16:58,604 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 692 transitions. [2020-08-21 20:16:58,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 20:16:58,604 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 692 transitions. [2020-08-21 20:16:58,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 20:16:58,606 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:16:58,607 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:16:58,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 20:16:58,607 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:16:58,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:16:58,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1536881969, now seen corresponding path program 1 times [2020-08-21 20:16:58,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:16:58,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956529194] [2020-08-21 20:16:58,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:16:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:58,819 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 20:16:58,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:16:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:58,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:16:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:58,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:16:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:58,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:16:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:58,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 20:16:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:58,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:58,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:16:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:58,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 20:16:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:58,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:58,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:58,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:16:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:58,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 20:16:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:58,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:58,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:58,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:16:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:58,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 20:16:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:58,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:58,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:58,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:16:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:58,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-21 20:16:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:58,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:16:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:58,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:16:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:16:59,013 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-21 20:16:59,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956529194] [2020-08-21 20:16:59,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:16:59,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 20:16:59,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710763845] [2020-08-21 20:16:59,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 20:16:59,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:16:59,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 20:16:59,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-21 20:16:59,015 INFO L87 Difference]: Start difference. First operand 538 states and 692 transitions. Second operand 10 states. [2020-08-21 20:16:59,158 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-21 20:16:59,852 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 20:17:00,020 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 20:17:02,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:17:02,321 INFO L93 Difference]: Finished difference Result 1233 states and 1636 transitions. [2020-08-21 20:17:02,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 20:17:02,322 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-08-21 20:17:02,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:17:02,327 INFO L225 Difference]: With dead ends: 1233 [2020-08-21 20:17:02,327 INFO L226 Difference]: Without dead ends: 702 [2020-08-21 20:17:02,329 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 [2020-08-21 20:17:02,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2020-08-21 20:17:02,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 538. [2020-08-21 20:17:02,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-08-21 20:17:02,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 690 transitions. [2020-08-21 20:17:02,415 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 690 transitions. Word has length 152 [2020-08-21 20:17:02,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:17:02,416 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 690 transitions. [2020-08-21 20:17:02,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 20:17:02,417 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 690 transitions. [2020-08-21 20:17:02,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 20:17:02,420 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:17:02,420 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:17:02,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 20:17:02,421 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:17:02,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:17:02,421 INFO L82 PathProgramCache]: Analyzing trace with hash -436283409, now seen corresponding path program 1 times [2020-08-21 20:17:02,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:17:02,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820634523] [2020-08-21 20:17:02,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:17:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:02,683 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 20:17:02,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:17:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:02,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:17:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:02,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:17:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:02,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:17:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:02,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 20:17:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:02,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:02,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:17:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:02,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 20:17:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:02,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:02,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:02,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:17:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:03,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 20:17:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:03,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:03,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:03,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:17:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:03,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 20:17:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:03,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:03,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:03,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:17:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:03,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-21 20:17:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:03,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:03,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:17:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:03,152 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-08-21 20:17:03,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820634523] [2020-08-21 20:17:03,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:17:03,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 20:17:03,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466485650] [2020-08-21 20:17:03,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 20:17:03,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:17:03,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 20:17:03,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-08-21 20:17:03,155 INFO L87 Difference]: Start difference. First operand 538 states and 690 transitions. Second operand 13 states. [2020-08-21 20:17:03,366 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-21 20:17:04,439 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 20:17:04,816 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 20:17:04,957 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 20:17:05,189 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 20:17:05,448 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 20:17:05,688 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-08-21 20:17:05,950 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-08-21 20:17:07,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:17:07,677 INFO L93 Difference]: Finished difference Result 1217 states and 1615 transitions. [2020-08-21 20:17:07,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 20:17:07,678 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-21 20:17:07,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:17:07,685 INFO L225 Difference]: With dead ends: 1217 [2020-08-21 20:17:07,685 INFO L226 Difference]: Without dead ends: 704 [2020-08-21 20:17:07,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-08-21 20:17:07,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-08-21 20:17:07,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 545. [2020-08-21 20:17:07,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-08-21 20:17:07,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 702 transitions. [2020-08-21 20:17:07,767 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 702 transitions. Word has length 152 [2020-08-21 20:17:07,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:17:07,769 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 702 transitions. [2020-08-21 20:17:07,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 20:17:07,769 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 702 transitions. [2020-08-21 20:17:07,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-21 20:17:07,773 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:17:07,773 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:17:07,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 20:17:07,774 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:17:07,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:17:07,775 INFO L82 PathProgramCache]: Analyzing trace with hash 948696336, now seen corresponding path program 1 times [2020-08-21 20:17:07,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:17:07,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825481804] [2020-08-21 20:17:07,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:17:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:08,069 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 20:17:08,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:17:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:08,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:17:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:08,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:17:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:08,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:17:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:08,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 20:17:08,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:08,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:08,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:17:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:08,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 20:17:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:08,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:08,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:08,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:17:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:08,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 20:17:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:08,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:08,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:08,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:17:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:08,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:17:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:08,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-21 20:17:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:08,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:08,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:08,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:17:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:08,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:17:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:08,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-21 20:17:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:08,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:08,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:17:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:08,412 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-21 20:17:08,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825481804] [2020-08-21 20:17:08,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:17:08,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 20:17:08,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799905831] [2020-08-21 20:17:08,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 20:17:08,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:17:08,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 20:17:08,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-21 20:17:08,417 INFO L87 Difference]: Start difference. First operand 545 states and 702 transitions. Second operand 11 states. [2020-08-21 20:17:08,559 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-21 20:17:09,616 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-08-21 20:17:09,796 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 20:17:09,960 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 20:17:10,127 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 20:17:10,278 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 20:17:11,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:17:11,875 INFO L93 Difference]: Finished difference Result 1168 states and 1528 transitions. [2020-08-21 20:17:11,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 20:17:11,876 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 164 [2020-08-21 20:17:11,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:17:11,880 INFO L225 Difference]: With dead ends: 1168 [2020-08-21 20:17:11,881 INFO L226 Difference]: Without dead ends: 648 [2020-08-21 20:17:11,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-08-21 20:17:11,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-08-21 20:17:11,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 550. [2020-08-21 20:17:11,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-08-21 20:17:11,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 707 transitions. [2020-08-21 20:17:11,929 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 707 transitions. Word has length 164 [2020-08-21 20:17:11,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:17:11,929 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 707 transitions. [2020-08-21 20:17:11,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 20:17:11,930 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 707 transitions. [2020-08-21 20:17:11,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 20:17:11,932 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:17:11,932 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:17:11,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 20:17:11,933 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:17:11,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:17:11,933 INFO L82 PathProgramCache]: Analyzing trace with hash 925896005, now seen corresponding path program 2 times [2020-08-21 20:17:11,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:17:11,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604997175] [2020-08-21 20:17:11,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:17:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:12,166 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 20:17:12,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:17:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:12,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:17:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:12,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:17:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:12,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:17:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:12,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 20:17:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:12,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:12,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:17:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:12,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 20:17:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:12,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:12,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:12,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:17:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:12,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:17:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:12,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 20:17:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:12,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:12,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:12,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:17:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:12,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-21 20:17:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:12,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:12,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:12,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:17:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:12,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-21 20:17:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:12,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:12,383 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-08-21 20:17:12,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604997175] [2020-08-21 20:17:12,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:17:12,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 20:17:12,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688190318] [2020-08-21 20:17:12,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 20:17:12,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:17:12,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 20:17:12,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-21 20:17:12,386 INFO L87 Difference]: Start difference. First operand 550 states and 707 transitions. Second operand 10 states. [2020-08-21 20:17:12,520 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-21 20:17:13,012 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-08-21 20:17:13,715 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 20:17:14,311 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 20:17:14,471 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 20:17:15,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:17:15,329 INFO L93 Difference]: Finished difference Result 1271 states and 1638 transitions. [2020-08-21 20:17:15,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 20:17:15,330 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-08-21 20:17:15,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:17:15,336 INFO L225 Difference]: With dead ends: 1271 [2020-08-21 20:17:15,336 INFO L226 Difference]: Without dead ends: 746 [2020-08-21 20:17:15,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-08-21 20:17:15,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2020-08-21 20:17:15,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 430. [2020-08-21 20:17:15,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-08-21 20:17:15,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 531 transitions. [2020-08-21 20:17:15,382 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 531 transitions. Word has length 152 [2020-08-21 20:17:15,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:17:15,383 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 531 transitions. [2020-08-21 20:17:15,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 20:17:15,383 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 531 transitions. [2020-08-21 20:17:15,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-21 20:17:15,385 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:17:15,385 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:17:15,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 20:17:15,386 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:17:15,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:17:15,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1391356121, now seen corresponding path program 1 times [2020-08-21 20:17:15,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:17:15,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853268291] [2020-08-21 20:17:15,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:17:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:15,584 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 20:17:15,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:17:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:15,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:17:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:15,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:17:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:15,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:17:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:15,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 20:17:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:15,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 20:17:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:15,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:15,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:17:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:15,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 20:17:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:15,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 20:17:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:15,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 20:17:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:15,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 20:17:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:15,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 20:17:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:15,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 20:17:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:15,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 20:17:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:15,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 20:17:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:15,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 20:17:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:15,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 20:17:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:15,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 20:17:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:15,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:15,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-21 20:17:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:15,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:15,713 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-08-21 20:17:15,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853268291] [2020-08-21 20:17:15,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:17:15,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 20:17:15,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356420022] [2020-08-21 20:17:15,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 20:17:15,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:17:15,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 20:17:15,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-21 20:17:15,715 INFO L87 Difference]: Start difference. First operand 430 states and 531 transitions. Second operand 8 states. [2020-08-21 20:17:18,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:17:18,585 INFO L93 Difference]: Finished difference Result 980 states and 1265 transitions. [2020-08-21 20:17:18,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 20:17:18,586 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 151 [2020-08-21 20:17:18,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:17:18,590 INFO L225 Difference]: With dead ends: 980 [2020-08-21 20:17:18,590 INFO L226 Difference]: Without dead ends: 592 [2020-08-21 20:17:18,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-21 20:17:18,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-08-21 20:17:18,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 453. [2020-08-21 20:17:18,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-08-21 20:17:18,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 568 transitions. [2020-08-21 20:17:18,635 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 568 transitions. Word has length 151 [2020-08-21 20:17:18,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:17:18,636 INFO L479 AbstractCegarLoop]: Abstraction has 453 states and 568 transitions. [2020-08-21 20:17:18,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 20:17:18,636 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 568 transitions. [2020-08-21 20:17:18,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-21 20:17:18,638 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:17:18,639 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:17:18,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 20:17:18,639 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:17:18,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:17:18,639 INFO L82 PathProgramCache]: Analyzing trace with hash -642852378, now seen corresponding path program 2 times [2020-08-21 20:17:18,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:17:18,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213832139] [2020-08-21 20:17:18,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:17:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:18,882 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 20:17:18,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:17:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:18,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:17:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:18,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:17:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:18,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:17:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:18,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 20:17:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:18,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:18,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:17:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:18,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 20:17:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:18,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:18,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:19,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:17:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:19,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:17:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:19,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 20:17:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:19,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:19,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:19,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:17:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:19,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:17:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:19,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 20:17:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:19,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:19,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:19,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:17:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:19,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:17:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:19,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 20:17:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:19,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:17:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:17:19,110 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-21 20:17:19,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213832139] [2020-08-21 20:17:19,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:17:19,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 20:17:19,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405361550] [2020-08-21 20:17:19,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 20:17:19,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:17:19,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 20:17:19,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 20:17:19,113 INFO L87 Difference]: Start difference. First operand 453 states and 568 transitions. Second operand 7 states. [2020-08-21 20:17:19,346 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-21 20:17:19,576 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-08-21 20:17:19,723 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-08-21 20:17:21,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:17:21,493 INFO L93 Difference]: Finished difference Result 553 states and 710 transitions. [2020-08-21 20:17:21,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 20:17:21,494 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-08-21 20:17:21,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:17:21,494 INFO L225 Difference]: With dead ends: 553 [2020-08-21 20:17:21,494 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 20:17:21,496 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 [2020-08-21 20:17:21,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 20:17:21,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 20:17:21,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 20:17:21,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 20:17:21,497 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 164 [2020-08-21 20:17:21,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:17:21,497 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 20:17:21,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 20:17:21,498 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 20:17:21,498 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 20:17:21,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 20:17:21,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 20:17:25,673 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 12 [2020-08-21 20:17:25,799 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-21 20:17:26,227 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 25 [2020-08-21 20:17:26,464 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 38 [2020-08-21 20:17:26,570 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 18 [2020-08-21 20:17:26,692 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 21 [2020-08-21 20:17:26,858 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 8 [2020-08-21 20:17:27,330 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 8 [2020-08-21 20:17:27,604 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 12 [2020-08-21 20:17:27,962 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 38 [2020-08-21 20:17:28,330 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 21 [2020-08-21 20:17:28,664 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 136 [2020-08-21 20:17:28,992 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 12 [2020-08-21 20:17:29,113 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 25 [2020-08-21 20:17:29,404 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 25 [2020-08-21 20:17:29,623 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 25 [2020-08-21 20:17:29,788 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 3