/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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 [2020-08-22 05:10:53,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:10:53,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:10:53,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:10:53,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:10:53,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:10:53,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:10:53,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:10:53,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:10:53,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:10:53,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:10:53,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:10:53,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:10:53,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:10:53,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:10:53,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:10:53,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:10:53,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:10:53,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:10:53,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:10:53,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:10:53,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:10:53,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:10:53,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:10:53,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:10:53,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:10:53,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:10:53,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:10:53,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:10:53,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:10:53,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:10:53,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:10:53,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:10:53,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:10:53,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:10:53,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:10:53,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:10:53,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:10:53,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:10:53,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:10:53,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:10:53,630 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 [2020-08-22 05:10:53,676 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:10:53,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:10:53,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:10:53,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:10:53,679 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:10:53,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:10:53,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:10:53,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:10:53,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:10:53,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:10:53,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:10:53,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:10:53,681 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:10:53,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:10:53,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:10:53,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:10:53,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:10:53,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:10:53,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:10:53,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:10:53,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:10:53,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:10:53,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:10:53,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:10:53,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:10:53,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:10:53,684 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 05:10:53,685 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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 05:10:53,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:10:53,998 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:10:54,008 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:10:54,010 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:10:54,011 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:10:54,011 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-22 05:10:54,071 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5c77b7e6/a65343f0fa7747c8bb17326546e9b9b1/FLAG67fee22ae [2020-08-22 05:10:54,754 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:10:54,755 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-22 05:10:54,784 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5c77b7e6/a65343f0fa7747c8bb17326546e9b9b1/FLAG67fee22ae [2020-08-22 05:10:54,984 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5c77b7e6/a65343f0fa7747c8bb17326546e9b9b1 [2020-08-22 05:10:54,992 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:10:54,993 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:10:54,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:10:54,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:10:54,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:10:54,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:10:54" (1/1) ... [2020-08-22 05:10:55,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35055a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:55, skipping insertion in model container [2020-08-22 05:10:55,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:10:54" (1/1) ... [2020-08-22 05:10:55,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:10:55,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:10:55,495 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1323] [2020-08-22 05:10:55,496 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] [2020-08-22 05:10:55,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:10:55,963 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:10:56,065 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1323] [2020-08-22 05:10:56,066 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] [2020-08-22 05:10:56,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:10:56,276 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:10:56,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:56 WrapperNode [2020-08-22 05:10:56,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:10:56,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:10:56,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:10:56,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:10:56,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:56" (1/1) ... [2020-08-22 05:10:56,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:56" (1/1) ... [2020-08-22 05:10:56,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:56" (1/1) ... [2020-08-22 05:10:56,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:56" (1/1) ... [2020-08-22 05:10:56,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:56" (1/1) ... [2020-08-22 05:10:56,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:56" (1/1) ... [2020-08-22 05:10:56,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:56" (1/1) ... [2020-08-22 05:10:56,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:10:56,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:10:56,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:10:56,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:10:56,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:56" (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 [2020-08-22 05:10:56,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:10:56,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:10:56,517 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-08-22 05:10:56,517 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-22 05:10:56,517 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2020-08-22 05:10:56,517 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2020-08-22 05:10:56,518 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-22 05:10:56,519 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-22 05:10:56,519 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_name [2020-08-22 05:10:56,519 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 05:10:56,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-22 05:10:56,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-22 05:10:56,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-22 05:10:56,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-22 05:10:56,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-22 05:10:56,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-22 05:10:56,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-22 05:10:56,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-22 05:10:56,523 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2020-08-22 05:10:56,524 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_allocate_port [2020-08-22 05:10:56,524 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_free_port [2020-08-22 05:10:56,525 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_name [2020-08-22 05:10:56,525 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_valid [2020-08-22 05:10:56,526 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_len [2020-08-22 05:10:56,526 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_start [2020-08-22 05:10:56,526 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_valid [2020-08-22 05:10:56,526 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_len [2020-08-22 05:10:56,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_isa_probe [2020-08-22 05:10:56,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_pnp_probe [2020-08-22 05:10:56,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_init [2020-08-22 05:10:56,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_exit [2020-08-22 05:10:56,527 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:10:56,527 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-22 05:10:56,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2020-08-22 05:10:56,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-22 05:10:56,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2020-08-22 05:10:56,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2020-08-22 05:10:56,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2020-08-22 05:10:56,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2020-08-22 05:10:56,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __gameport_register_port [2020-08-22 05:10:56,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-22 05:10:56,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-08-22 05:10:56,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-08-22 05:10:56,529 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_phys [2020-08-22 05:10:56,529 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_unregister_port [2020-08-22 05:10:56,530 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2020-08-22 05:10:56,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-22 05:10:56,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-22 05:10:56,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_1 [2020-08-22 05:10:56,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2020-08-22 05:10:56,531 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2020-08-22 05:10:56,531 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_get_resource [2020-08-22 05:10:56,531 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_register_driver [2020-08-22 05:10:56,532 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_unregister_driver [2020-08-22 05:10:56,532 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-22 05:10:56,532 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2020-08-22 05:10:56,532 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-22 05:10:56,533 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-22 05:10:56,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:10:56,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-22 05:10:56,533 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-22 05:10:56,533 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-22 05:10:56,533 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-08-22 05:10:56,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:10:56,534 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-22 05:10:56,534 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2020-08-22 05:10:56,534 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2020-08-22 05:10:56,534 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2020-08-22 05:10:56,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:10:56,535 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-08-22 05:10:56,536 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-08-22 05:10:56,536 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-22 05:10:56,537 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-22 05:10:56,537 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_name [2020-08-22 05:10:56,538 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-22 05:10:56,538 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2020-08-22 05:10:56,538 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-22 05:10:56,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2020-08-22 05:10:56,538 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:10:56,539 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 05:10:56,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:10:56,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-22 05:10:56,540 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 05:10:56,540 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 05:10:56,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-22 05:10:56,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:10:56,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-22 05:10:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-22 05:10:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-22 05:10:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-22 05:10:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-22 05:10:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-22 05:10:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-22 05:10:56,542 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2020-08-22 05:10:56,542 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2020-08-22 05:10:56,542 INFO L130 BoogieDeclarations]: Found specification of procedure __gameport_register_port [2020-08-22 05:10:56,542 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_unregister_port [2020-08-22 05:10:56,542 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_phys [2020-08-22 05:10:56,542 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_allocate_port [2020-08-22 05:10:56,543 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_free_port [2020-08-22 05:10:56,543 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_name [2020-08-22 05:10:56,543 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_get_resource [2020-08-22 05:10:56,543 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_valid [2020-08-22 05:10:56,543 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_len [2020-08-22 05:10:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_start [2020-08-22 05:10:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_valid [2020-08-22 05:10:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_len [2020-08-22 05:10:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_register_driver [2020-08-22 05:10:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_unregister_driver [2020-08-22 05:10:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_isa_probe [2020-08-22 05:10:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:10:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:10:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:10:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_pnp_probe [2020-08-22 05:10:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_init [2020-08-22 05:10:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_exit [2020-08-22 05:10:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-22 05:10:56,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-22 05:10:56,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_1 [2020-08-22 05:10:56,548 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:10:56,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2020-08-22 05:10:56,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-22 05:10:56,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2020-08-22 05:10:56,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2020-08-22 05:10:56,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2020-08-22 05:10:56,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2020-08-22 05:10:56,549 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:10:56,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:10:56,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:10:56,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 05:10:56,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 05:10:56,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:10:57,239 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-22 05:10:57,828 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:10:57,828 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 05:10:57,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:10:57 BoogieIcfgContainer [2020-08-22 05:10:57,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:10:57,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:10:57,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:10:57,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:10:57,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:10:54" (1/3) ... [2020-08-22 05:10:57,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5123720f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:10:57, skipping insertion in model container [2020-08-22 05:10:57,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:56" (2/3) ... [2020-08-22 05:10:57,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5123720f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:10:57, skipping insertion in model container [2020-08-22 05:10:57,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:10:57" (3/3) ... [2020-08-22 05:10:57,844 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 [2020-08-22 05:10:57,854 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:10:57,862 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:10:57,877 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:10:57,904 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:10:57,904 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:10:57,904 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:10:57,904 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:10:57,905 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:10:57,905 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:10:57,905 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:10:57,905 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:10:57,938 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states. [2020-08-22 05:10:57,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-22 05:10:57,953 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:10:57,955 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] [2020-08-22 05:10:57,955 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:10:57,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:10:57,960 INFO L82 PathProgramCache]: Analyzing trace with hash -2083768503, now seen corresponding path program 1 times [2020-08-22 05:10:57,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:10:57,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008857587] [2020-08-22 05:10:57,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:10:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:58,828 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-22 05:10:58,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:10:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:58,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:10:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:58,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:10:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:58,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:10:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:58,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-22 05:10:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:58,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 05:10:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:58,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:10:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:58,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 05:10:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:58,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 05:10:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:58,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-22 05:10:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:58,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 05:10:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:58,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 05:10:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:59,028 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 05:10:59,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008857587] [2020-08-22 05:10:59,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:10:59,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 05:10:59,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053613001] [2020-08-22 05:10:59,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:10:59,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:10:59,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:10:59,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:10:59,059 INFO L87 Difference]: Start difference. First operand 348 states. Second operand 10 states. [2020-08-22 05:10:59,246 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-22 05:11:00,257 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-22 05:11:01,293 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-22 05:11:01,453 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-22 05:11:01,628 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-22 05:11:01,794 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-22 05:11:03,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:11:03,709 INFO L93 Difference]: Finished difference Result 815 states and 1118 transitions. [2020-08-22 05:11:03,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 05:11:03,711 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-08-22 05:11:03,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:11:03,731 INFO L225 Difference]: With dead ends: 815 [2020-08-22 05:11:03,731 INFO L226 Difference]: Without dead ends: 429 [2020-08-22 05:11:03,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-08-22 05:11:03,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-08-22 05:11:03,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 306. [2020-08-22 05:11:03,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-08-22 05:11:03,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 386 transitions. [2020-08-22 05:11:03,866 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 386 transitions. Word has length 91 [2020-08-22 05:11:03,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:11:03,867 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 386 transitions. [2020-08-22 05:11:03,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:11:03,867 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 386 transitions. [2020-08-22 05:11:03,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-22 05:11:03,874 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:11:03,874 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] [2020-08-22 05:11:03,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:11:03,875 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:11:03,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:11:03,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1314856814, now seen corresponding path program 1 times [2020-08-22 05:11:03,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:11:03,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055759344] [2020-08-22 05:11:03,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:11:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,129 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-22 05:11:04,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:11:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-22 05:11:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 05:11:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:11:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 05:11:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 05:11:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 05:11:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 05:11:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 05:11:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,280 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 05:11:04,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055759344] [2020-08-22 05:11:04,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:11:04,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:11:04,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153742874] [2020-08-22 05:11:04,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:11:04,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:11:04,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:11:04,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:11:04,284 INFO L87 Difference]: Start difference. First operand 306 states and 386 transitions. Second operand 6 states. [2020-08-22 05:11:04,431 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-22 05:11:07,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:11:07,140 INFO L93 Difference]: Finished difference Result 722 states and 963 transitions. [2020-08-22 05:11:07,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 05:11:07,141 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-08-22 05:11:07,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:11:07,147 INFO L225 Difference]: With dead ends: 722 [2020-08-22 05:11:07,147 INFO L226 Difference]: Without dead ends: 441 [2020-08-22 05:11:07,149 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 [2020-08-22 05:11:07,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-08-22 05:11:07,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 308. [2020-08-22 05:11:07,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-08-22 05:11:07,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 388 transitions. [2020-08-22 05:11:07,202 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 388 transitions. Word has length 97 [2020-08-22 05:11:07,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:11:07,203 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 388 transitions. [2020-08-22 05:11:07,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:11:07,203 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 388 transitions. [2020-08-22 05:11:07,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-08-22 05:11:07,208 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:11:07,209 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] [2020-08-22 05:11:07,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:11:07,209 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:11:07,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:11:07,210 INFO L82 PathProgramCache]: Analyzing trace with hash -492581383, now seen corresponding path program 1 times [2020-08-22 05:11:07,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:11:07,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500526415] [2020-08-22 05:11:07,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:11:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:07,486 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-22 05:11:07,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:07,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:07,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:07,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:11:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:07,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 05:11:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:07,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:07,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:07,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:07,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 05:11:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:07,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:07,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:07,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:07,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 05:11:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:07,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:07,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:07,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:07,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-22 05:11:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:07,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:07,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:11:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:07,653 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-22 05:11:07,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500526415] [2020-08-22 05:11:07,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:11:07,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:11:07,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849425872] [2020-08-22 05:11:07,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:11:07,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:11:07,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:11:07,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:11:07,656 INFO L87 Difference]: Start difference. First operand 308 states and 388 transitions. Second operand 6 states. [2020-08-22 05:11:07,790 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-22 05:11:07,997 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-08-22 05:11:08,158 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-08-22 05:11:11,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:11:11,274 INFO L93 Difference]: Finished difference Result 945 states and 1246 transitions. [2020-08-22 05:11:11,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 05:11:11,275 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-08-22 05:11:11,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:11:11,281 INFO L225 Difference]: With dead ends: 945 [2020-08-22 05:11:11,281 INFO L226 Difference]: Without dead ends: 662 [2020-08-22 05:11:11,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 05:11:11,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2020-08-22 05:11:11,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 489. [2020-08-22 05:11:11,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-08-22 05:11:11,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 617 transitions. [2020-08-22 05:11:11,358 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 617 transitions. Word has length 123 [2020-08-22 05:11:11,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:11:11,360 INFO L479 AbstractCegarLoop]: Abstraction has 489 states and 617 transitions. [2020-08-22 05:11:11,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:11:11,361 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 617 transitions. [2020-08-22 05:11:11,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-08-22 05:11:11,367 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:11:11,367 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] [2020-08-22 05:11:11,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:11:11,367 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:11:11,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:11:11,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1067393612, now seen corresponding path program 1 times [2020-08-22 05:11:11,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:11:11,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118316891] [2020-08-22 05:11:11,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:11:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:11,639 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-22 05:11:11,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:11,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:11,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:11,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:11:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:11,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-22 05:11:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:11,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 05:11:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:11,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:11,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:11:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:11,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 05:11:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:11,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 05:11:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:11,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 05:11:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:11,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 05:11:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:11,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 05:11:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:11,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 05:11:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:11,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 05:11:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:11,748 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-08-22 05:11:11,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118316891] [2020-08-22 05:11:11,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:11:11,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 05:11:11,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102775326] [2020-08-22 05:11:11,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 05:11:11,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:11:11,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 05:11:11,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 05:11:11,750 INFO L87 Difference]: Start difference. First operand 489 states and 617 transitions. Second operand 7 states. [2020-08-22 05:11:11,908 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-22 05:11:14,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:11:14,900 INFO L93 Difference]: Finished difference Result 1237 states and 1674 transitions. [2020-08-22 05:11:14,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 05:11:14,901 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-08-22 05:11:14,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:11:14,910 INFO L225 Difference]: With dead ends: 1237 [2020-08-22 05:11:14,911 INFO L226 Difference]: Without dead ends: 773 [2020-08-22 05:11:14,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:11:14,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-08-22 05:11:15,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 541. [2020-08-22 05:11:15,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2020-08-22 05:11:15,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 699 transitions. [2020-08-22 05:11:15,034 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 699 transitions. Word has length 110 [2020-08-22 05:11:15,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:11:15,037 INFO L479 AbstractCegarLoop]: Abstraction has 541 states and 699 transitions. [2020-08-22 05:11:15,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 05:11:15,037 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 699 transitions. [2020-08-22 05:11:15,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-22 05:11:15,041 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:11:15,042 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] [2020-08-22 05:11:15,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:11:15,042 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:11:15,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:11:15,043 INFO L82 PathProgramCache]: Analyzing trace with hash 790920921, now seen corresponding path program 1 times [2020-08-22 05:11:15,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:11:15,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620919791] [2020-08-22 05:11:15,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:11:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:15,299 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-22 05:11:15,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:15,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:15,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:15,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:11:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:15,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 05:11:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:15,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:15,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 05:11:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:15,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:15,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:15,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:15,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-22 05:11:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:15,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:15,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:15,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:15,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 05:11:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:15,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:15,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:15,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:15,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 05:11:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:15,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:15,528 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-22 05:11:15,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620919791] [2020-08-22 05:11:15,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:11:15,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 05:11:15,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189323603] [2020-08-22 05:11:15,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 05:11:15,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:11:15,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 05:11:15,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:11:15,536 INFO L87 Difference]: Start difference. First operand 541 states and 699 transitions. Second operand 9 states. [2020-08-22 05:11:15,677 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-22 05:11:16,162 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-08-22 05:11:18,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:11:18,154 INFO L93 Difference]: Finished difference Result 1246 states and 1663 transitions. [2020-08-22 05:11:18,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 05:11:18,154 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2020-08-22 05:11:18,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:11:18,161 INFO L225 Difference]: With dead ends: 1246 [2020-08-22 05:11:18,161 INFO L226 Difference]: Without dead ends: 708 [2020-08-22 05:11:18,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-08-22 05:11:18,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-08-22 05:11:18,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 538. [2020-08-22 05:11:18,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-08-22 05:11:18,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 692 transitions. [2020-08-22 05:11:18,219 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 692 transitions. Word has length 137 [2020-08-22 05:11:18,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:11:18,220 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 692 transitions. [2020-08-22 05:11:18,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 05:11:18,220 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 692 transitions. [2020-08-22 05:11:18,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 05:11:18,222 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:11:18,223 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] [2020-08-22 05:11:18,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:11:18,223 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:11:18,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:11:18,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1536881969, now seen corresponding path program 1 times [2020-08-22 05:11:18,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:11:18,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404337959] [2020-08-22 05:11:18,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:11:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,438 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-22 05:11:18,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:18,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:11:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 05:11:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:11:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 05:11:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 05:11:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 05:11:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 05:11:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:11:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,669 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-22 05:11:18,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404337959] [2020-08-22 05:11:18,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:11:18,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 05:11:18,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727496988] [2020-08-22 05:11:18,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:11:18,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:11:18,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:11:18,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:11:18,672 INFO L87 Difference]: Start difference. First operand 538 states and 692 transitions. Second operand 10 states. [2020-08-22 05:11:18,897 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-22 05:11:19,683 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-22 05:11:19,853 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-22 05:11:22,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:11:22,322 INFO L93 Difference]: Finished difference Result 1233 states and 1636 transitions. [2020-08-22 05:11:22,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 05:11:22,323 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-08-22 05:11:22,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:11:22,328 INFO L225 Difference]: With dead ends: 1233 [2020-08-22 05:11:22,328 INFO L226 Difference]: Without dead ends: 702 [2020-08-22 05:11:22,331 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 [2020-08-22 05:11:22,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2020-08-22 05:11:22,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 538. [2020-08-22 05:11:22,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-08-22 05:11:22,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 690 transitions. [2020-08-22 05:11:22,389 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 690 transitions. Word has length 152 [2020-08-22 05:11:22,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:11:22,390 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 690 transitions. [2020-08-22 05:11:22,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:11:22,390 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 690 transitions. [2020-08-22 05:11:22,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 05:11:22,394 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:11:22,394 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] [2020-08-22 05:11:22,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:11:22,395 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:11:22,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:11:22,395 INFO L82 PathProgramCache]: Analyzing trace with hash -436283409, now seen corresponding path program 1 times [2020-08-22 05:11:22,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:11:22,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676399211] [2020-08-22 05:11:22,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:11:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:22,637 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-22 05:11:22,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:22,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:22,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:22,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:11:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:22,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 05:11:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:22,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:22,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:11:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:22,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 05:11:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:22,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:22,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:22,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:22,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 05:11:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:22,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:22,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:22,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:22,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 05:11:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:22,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:22,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:22,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:22,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 05:11:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:22,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:22,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:11:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:22,963 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-08-22 05:11:22,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676399211] [2020-08-22 05:11:22,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:11:22,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 05:11:22,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178864676] [2020-08-22 05:11:22,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 05:11:22,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:11:22,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 05:11:22,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-08-22 05:11:22,966 INFO L87 Difference]: Start difference. First operand 538 states and 690 transitions. Second operand 13 states. [2020-08-22 05:11:23,166 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-22 05:11:24,157 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-22 05:11:24,587 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-22 05:11:24,766 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-22 05:11:24,956 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-22 05:11:25,142 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-22 05:11:25,326 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-08-22 05:11:25,522 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-08-22 05:11:27,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:11:27,611 INFO L93 Difference]: Finished difference Result 1217 states and 1615 transitions. [2020-08-22 05:11:27,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 05:11:27,611 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-22 05:11:27,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:11:27,617 INFO L225 Difference]: With dead ends: 1217 [2020-08-22 05:11:27,617 INFO L226 Difference]: Without dead ends: 704 [2020-08-22 05:11:27,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-08-22 05:11:27,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-08-22 05:11:27,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 545. [2020-08-22 05:11:27,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-08-22 05:11:27,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 702 transitions. [2020-08-22 05:11:27,672 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 702 transitions. Word has length 152 [2020-08-22 05:11:27,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:11:27,673 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 702 transitions. [2020-08-22 05:11:27,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 05:11:27,673 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 702 transitions. [2020-08-22 05:11:27,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-22 05:11:27,675 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:11:27,676 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] [2020-08-22 05:11:27,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 05:11:27,676 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:11:27,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:11:27,677 INFO L82 PathProgramCache]: Analyzing trace with hash 948696336, now seen corresponding path program 1 times [2020-08-22 05:11:27,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:11:27,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515098685] [2020-08-22 05:11:27,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:11:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:27,927 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-22 05:11:27,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:27,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:27,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:27,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:11:27,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:28,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 05:11:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:28,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:28,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:11:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:28,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 05:11:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:28,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:28,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:28,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:28,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 05:11:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:28,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:28,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:28,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:11:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:28,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:11:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:28,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-22 05:11:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:28,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:28,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:28,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:11:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:28,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:11:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:28,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 05:11:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:28,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:28,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:11:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:28,202 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-22 05:11:28,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515098685] [2020-08-22 05:11:28,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:11:28,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 05:11:28,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449393481] [2020-08-22 05:11:28,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 05:11:28,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:11:28,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 05:11:28,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-22 05:11:28,208 INFO L87 Difference]: Start difference. First operand 545 states and 702 transitions. Second operand 11 states. [2020-08-22 05:11:28,417 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-22 05:11:30,033 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-08-22 05:11:30,229 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-22 05:11:30,512 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-22 05:11:30,712 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-22 05:11:30,866 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-22 05:11:32,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:11:32,742 INFO L93 Difference]: Finished difference Result 1168 states and 1528 transitions. [2020-08-22 05:11:32,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 05:11:32,743 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 164 [2020-08-22 05:11:32,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:11:32,747 INFO L225 Difference]: With dead ends: 1168 [2020-08-22 05:11:32,747 INFO L226 Difference]: Without dead ends: 648 [2020-08-22 05:11:32,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-08-22 05:11:32,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-08-22 05:11:32,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 550. [2020-08-22 05:11:32,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-08-22 05:11:32,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 707 transitions. [2020-08-22 05:11:32,801 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 707 transitions. Word has length 164 [2020-08-22 05:11:32,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:11:32,801 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 707 transitions. [2020-08-22 05:11:32,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 05:11:32,802 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 707 transitions. [2020-08-22 05:11:32,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 05:11:32,805 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:11:32,806 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] [2020-08-22 05:11:32,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 05:11:32,806 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:11:32,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:11:32,806 INFO L82 PathProgramCache]: Analyzing trace with hash 925896005, now seen corresponding path program 2 times [2020-08-22 05:11:32,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:11:32,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473523766] [2020-08-22 05:11:32,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:11:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:33,051 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-22 05:11:33,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:33,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:33,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:33,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:11:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:33,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 05:11:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:33,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:33,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:11:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:33,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 05:11:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:33,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:33,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:33,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:11:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:33,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:11:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:33,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 05:11:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:33,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:33,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:33,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:33,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-22 05:11:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:33,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:33,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:33,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:33,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 05:11:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:33,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:33,299 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-08-22 05:11:33,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473523766] [2020-08-22 05:11:33,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:11:33,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 05:11:33,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315495698] [2020-08-22 05:11:33,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:11:33,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:11:33,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:11:33,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:11:33,302 INFO L87 Difference]: Start difference. First operand 550 states and 707 transitions. Second operand 10 states. [2020-08-22 05:11:33,485 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-22 05:11:34,122 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-08-22 05:11:34,815 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-22 05:11:35,438 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-22 05:11:35,600 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-22 05:11:36,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:11:36,535 INFO L93 Difference]: Finished difference Result 1271 states and 1638 transitions. [2020-08-22 05:11:36,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 05:11:36,536 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-08-22 05:11:36,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:11:36,541 INFO L225 Difference]: With dead ends: 1271 [2020-08-22 05:11:36,541 INFO L226 Difference]: Without dead ends: 746 [2020-08-22 05:11:36,543 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 [2020-08-22 05:11:36,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2020-08-22 05:11:36,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 430. [2020-08-22 05:11:36,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-08-22 05:11:36,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 531 transitions. [2020-08-22 05:11:36,588 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 531 transitions. Word has length 152 [2020-08-22 05:11:36,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:11:36,588 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 531 transitions. [2020-08-22 05:11:36,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:11:36,589 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 531 transitions. [2020-08-22 05:11:36,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-22 05:11:36,591 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:11:36,591 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] [2020-08-22 05:11:36,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 05:11:36,592 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:11:36,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:11:36,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1391356121, now seen corresponding path program 1 times [2020-08-22 05:11:36,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:11:36,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950178189] [2020-08-22 05:11:36,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:11:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:36,797 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-22 05:11:36,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:36,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:36,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:36,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:11:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:36,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-22 05:11:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:36,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 05:11:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:36,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:36,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:11:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:36,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 05:11:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:36,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 05:11:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:36,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 05:11:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:36,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 05:11:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:36,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-22 05:11:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:36,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 05:11:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:36,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 05:11:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:36,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 05:11:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:36,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 05:11:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:36,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 05:11:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:36,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 05:11:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:36,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:36,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 05:11:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:36,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:36,921 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-08-22 05:11:36,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950178189] [2020-08-22 05:11:36,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:11:36,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 05:11:36,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667642414] [2020-08-22 05:11:36,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:11:36,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:11:36,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:11:36,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:11:36,923 INFO L87 Difference]: Start difference. First operand 430 states and 531 transitions. Second operand 8 states. [2020-08-22 05:11:37,080 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-22 05:11:39,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:11:39,961 INFO L93 Difference]: Finished difference Result 980 states and 1265 transitions. [2020-08-22 05:11:39,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 05:11:39,962 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 151 [2020-08-22 05:11:39,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:11:39,966 INFO L225 Difference]: With dead ends: 980 [2020-08-22 05:11:39,967 INFO L226 Difference]: Without dead ends: 592 [2020-08-22 05:11:39,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:11:39,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-08-22 05:11:40,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 453. [2020-08-22 05:11:40,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-08-22 05:11:40,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 568 transitions. [2020-08-22 05:11:40,011 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 568 transitions. Word has length 151 [2020-08-22 05:11:40,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:11:40,011 INFO L479 AbstractCegarLoop]: Abstraction has 453 states and 568 transitions. [2020-08-22 05:11:40,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:11:40,011 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 568 transitions. [2020-08-22 05:11:40,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-22 05:11:40,014 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:11:40,014 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] [2020-08-22 05:11:40,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 05:11:40,014 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:11:40,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:11:40,015 INFO L82 PathProgramCache]: Analyzing trace with hash -642852378, now seen corresponding path program 2 times [2020-08-22 05:11:40,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:11:40,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366478206] [2020-08-22 05:11:40,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:11:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:40,252 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-22 05:11:40,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:40,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:40,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:40,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:11:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:40,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 05:11:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:40,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:40,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:11:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:40,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 05:11:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:40,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:40,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:40,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:11:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:40,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:11:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:40,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 05:11:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:40,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:40,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:40,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:11:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:40,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:11:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:40,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 05:11:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:40,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:40,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:40,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:11:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:40,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:11:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:40,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 05:11:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:40,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:40,481 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-22 05:11:40,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366478206] [2020-08-22 05:11:40,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:11:40,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 05:11:40,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398259775] [2020-08-22 05:11:40,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 05:11:40,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:11:40,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 05:11:40,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-22 05:11:40,483 INFO L87 Difference]: Start difference. First operand 453 states and 568 transitions. Second operand 7 states. [2020-08-22 05:11:40,622 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-22 05:11:40,864 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-08-22 05:11:41,038 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-08-22 05:11:43,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:11:43,068 INFO L93 Difference]: Finished difference Result 553 states and 710 transitions. [2020-08-22 05:11:43,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 05:11:43,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-08-22 05:11:43,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:11:43,069 INFO L225 Difference]: With dead ends: 553 [2020-08-22 05:11:43,070 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 05:11:43,072 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 [2020-08-22 05:11:43,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 05:11:43,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 05:11:43,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 05:11:43,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 05:11:43,073 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 164 [2020-08-22 05:11:43,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:11:43,074 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 05:11:43,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 05:11:43,074 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 05:11:43,074 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 05:11:43,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 05:11:43,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 05:11:47,014 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 12 [2020-08-22 05:11:47,400 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-22 05:11:47,522 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-22 05:11:47,676 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 25