/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:26:06,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:26:06,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:26:06,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:26:06,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:26:06,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:26:06,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:26:06,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:26:06,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:26:06,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:26:06,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:26:06,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:26:06,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:26:06,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:26:06,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:26:06,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:26:06,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:26:06,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:26:06,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:26:06,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:26:06,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:26:06,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:26:06,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:26:06,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:26:06,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:26:06,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:26:06,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:26:06,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:26:06,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:26:06,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:26:06,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:26:06,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:26:06,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:26:06,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:26:06,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:26:06,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:26:06,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:26:06,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:26:06,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:26:06,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:26:06,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:26:06,461 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-18 22:26:06,502 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:26:06,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:26:06,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:26:06,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:26:06,504 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:26:06,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:26:06,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:26:06,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:26:06,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:26:06,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:26:06,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:26:06,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:26:06,507 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:26:06,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:26:06,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:26:06,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:26:06,508 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:26:06,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:26:06,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:26:06,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:26:06,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:26:06,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:26:06,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:26:06,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:26:06,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:26:06,510 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:26:06,510 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 22:26:06,510 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 22:26:06,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:26:06,838 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:26:06,842 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:26:06,843 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:26:06,843 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:26:06,844 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-18 22:26:06,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4542b21e/685c8646ff5143b2a39dfb0b2ed21951/FLAG938a9b3db [2020-08-18 22:26:07,538 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:26:07,539 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-18 22:26:07,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4542b21e/685c8646ff5143b2a39dfb0b2ed21951/FLAG938a9b3db [2020-08-18 22:26:07,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4542b21e/685c8646ff5143b2a39dfb0b2ed21951 [2020-08-18 22:26:07,780 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:26:07,782 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:26:07,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:26:07,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:26:07,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:26:07,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:26:07" (1/1) ... [2020-08-18 22:26:07,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54630a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:07, skipping insertion in model container [2020-08-18 22:26:07,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:26:07" (1/1) ... [2020-08-18 22:26:07,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:26:07,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:26:08,307 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1323] [2020-08-18 22:26:08,307 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1324-1325] [2020-08-18 22:26:08,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:26:08,611 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:26:08,715 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1323] [2020-08-18 22:26:08,715 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1324-1325] [2020-08-18 22:26:08,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:26:08,878 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:26:08,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:08 WrapperNode [2020-08-18 22:26:08,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:26:08,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:26:08,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:26:08,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:26:08,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:08" (1/1) ... [2020-08-18 22:26:08,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:08" (1/1) ... [2020-08-18 22:26:08,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:08" (1/1) ... [2020-08-18 22:26:08,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:08" (1/1) ... [2020-08-18 22:26:08,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:08" (1/1) ... [2020-08-18 22:26:09,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:08" (1/1) ... [2020-08-18 22:26:09,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:08" (1/1) ... [2020-08-18 22:26:09,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:26:09,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:26:09,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:26:09,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:26:09,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:26:09,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:26:09,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:26:09,101 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-08-18 22:26:09,102 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-18 22:26:09,102 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2020-08-18 22:26:09,102 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2020-08-18 22:26:09,102 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-18 22:26:09,102 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-18 22:26:09,103 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_name [2020-08-18 22:26:09,103 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 22:26:09,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 22:26:09,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 22:26:09,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 22:26:09,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 22:26:09,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 22:26:09,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 22:26:09,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 22:26:09,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 22:26:09,105 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2020-08-18 22:26:09,105 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_allocate_port [2020-08-18 22:26:09,105 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_free_port [2020-08-18 22:26:09,105 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_name [2020-08-18 22:26:09,106 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_valid [2020-08-18 22:26:09,106 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_len [2020-08-18 22:26:09,106 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_start [2020-08-18 22:26:09,106 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_valid [2020-08-18 22:26:09,107 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_len [2020-08-18 22:26:09,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_isa_probe [2020-08-18 22:26:09,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_pnp_probe [2020-08-18 22:26:09,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_init [2020-08-18 22:26:09,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_exit [2020-08-18 22:26:09,108 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:26:09,108 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-18 22:26:09,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2020-08-18 22:26:09,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-18 22:26:09,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2020-08-18 22:26:09,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2020-08-18 22:26:09,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2020-08-18 22:26:09,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2020-08-18 22:26:09,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __gameport_register_port [2020-08-18 22:26:09,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-18 22:26:09,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-08-18 22:26:09,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-08-18 22:26:09,110 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_phys [2020-08-18 22:26:09,110 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_unregister_port [2020-08-18 22:26:09,110 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2020-08-18 22:26:09,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 22:26:09,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 22:26:09,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_1 [2020-08-18 22:26:09,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2020-08-18 22:26:09,111 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2020-08-18 22:26:09,111 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_get_resource [2020-08-18 22:26:09,111 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_register_driver [2020-08-18 22:26:09,111 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_unregister_driver [2020-08-18 22:26:09,112 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-18 22:26:09,112 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2020-08-18 22:26:09,112 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 22:26:09,112 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 22:26:09,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:26:09,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 22:26:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-18 22:26:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-18 22:26:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-08-18 22:26:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 22:26:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-18 22:26:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2020-08-18 22:26:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2020-08-18 22:26:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2020-08-18 22:26:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:26:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-08-18 22:26:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-08-18 22:26:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-18 22:26:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-18 22:26:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_name [2020-08-18 22:26:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 22:26:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2020-08-18 22:26:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-18 22:26:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2020-08-18 22:26:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:26:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 22:26:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:26:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 22:26:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 22:26:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 22:26:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 22:26:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:26:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 22:26:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 22:26:09,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 22:26:09,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 22:26:09,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 22:26:09,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 22:26:09,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 22:26:09,118 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2020-08-18 22:26:09,118 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2020-08-18 22:26:09,119 INFO L130 BoogieDeclarations]: Found specification of procedure __gameport_register_port [2020-08-18 22:26:09,119 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_unregister_port [2020-08-18 22:26:09,119 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_phys [2020-08-18 22:26:09,119 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_allocate_port [2020-08-18 22:26:09,119 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_free_port [2020-08-18 22:26:09,120 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_name [2020-08-18 22:26:09,120 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_get_resource [2020-08-18 22:26:09,120 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_valid [2020-08-18 22:26:09,120 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_len [2020-08-18 22:26:09,120 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_start [2020-08-18 22:26:09,120 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_valid [2020-08-18 22:26:09,121 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_len [2020-08-18 22:26:09,121 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_register_driver [2020-08-18 22:26:09,121 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_unregister_driver [2020-08-18 22:26:09,121 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_isa_probe [2020-08-18 22:26:09,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:26:09,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:26:09,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 22:26:09,122 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_pnp_probe [2020-08-18 22:26:09,122 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_init [2020-08-18 22:26:09,122 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_exit [2020-08-18 22:26:09,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 22:26:09,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 22:26:09,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_1 [2020-08-18 22:26:09,123 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:26:09,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2020-08-18 22:26:09,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-18 22:26:09,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2020-08-18 22:26:09,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2020-08-18 22:26:09,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2020-08-18 22:26:09,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2020-08-18 22:26:09,124 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 22:26:09,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:26:09,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:26:09,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 22:26:09,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 22:26:09,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:26:09,704 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 22:26:10,475 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:26:10,475 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 22:26:10,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:26:10 BoogieIcfgContainer [2020-08-18 22:26:10,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:26:10,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:26:10,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:26:10,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:26:10,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:26:07" (1/3) ... [2020-08-18 22:26:10,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e93a209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:26:10, skipping insertion in model container [2020-08-18 22:26:10,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:08" (2/3) ... [2020-08-18 22:26:10,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e93a209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:26:10, skipping insertion in model container [2020-08-18 22:26:10,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:26:10" (3/3) ... [2020-08-18 22:26:10,491 INFO L109 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-18 22:26:10,502 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:26:10,510 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:26:10,525 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:26:10,552 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:26:10,552 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:26:10,552 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:26:10,552 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:26:10,553 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:26:10,553 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:26:10,553 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:26:10,553 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:26:10,580 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states. [2020-08-18 22:26:10,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-18 22:26:10,595 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:26:10,597 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:26:10,597 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:26:10,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:26:10,604 INFO L82 PathProgramCache]: Analyzing trace with hash -2083768503, now seen corresponding path program 1 times [2020-08-18 22:26:10,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:26:10,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911205203] [2020-08-18 22:26:10,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:26:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:11,415 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 22:26:11,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:11,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:11,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:11,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:26:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:11,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 22:26:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:11,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 22:26:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:11,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:11,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 22:26:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:11,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 22:26:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:11,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 22:26:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:11,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 22:26:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:11,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 22:26:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:11,633 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 22:26:11,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911205203] [2020-08-18 22:26:11,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:26:11,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 22:26:11,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644553272] [2020-08-18 22:26:11,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:26:11,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:26:11,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:26:11,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:26:11,661 INFO L87 Difference]: Start difference. First operand 348 states. Second operand 10 states. [2020-08-18 22:26:11,859 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-18 22:26:12,823 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-18 22:26:13,793 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-18 22:26:13,966 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-18 22:26:14,142 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-18 22:26:14,330 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-18 22:26:16,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:26:16,247 INFO L93 Difference]: Finished difference Result 815 states and 1118 transitions. [2020-08-18 22:26:16,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 22:26:16,248 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-08-18 22:26:16,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:26:16,267 INFO L225 Difference]: With dead ends: 815 [2020-08-18 22:26:16,267 INFO L226 Difference]: Without dead ends: 429 [2020-08-18 22:26:16,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-08-18 22:26:16,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-08-18 22:26:16,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 306. [2020-08-18 22:26:16,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-08-18 22:26:16,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 386 transitions. [2020-08-18 22:26:16,385 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 386 transitions. Word has length 91 [2020-08-18 22:26:16,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:26:16,386 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 386 transitions. [2020-08-18 22:26:16,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:26:16,386 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 386 transitions. [2020-08-18 22:26:16,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 22:26:16,392 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:26:16,393 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:26:16,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:26:16,393 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:26:16,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:26:16,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1314856814, now seen corresponding path program 1 times [2020-08-18 22:26:16,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:26:16,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234698748] [2020-08-18 22:26:16,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:26:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,672 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 22:26:16,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:26:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 22:26:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 22:26:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:26:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 22:26:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 22:26:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 22:26:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 22:26:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 22:26:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,777 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 22:26:16,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234698748] [2020-08-18 22:26:16,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:26:16,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 22:26:16,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712918043] [2020-08-18 22:26:16,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 22:26:16,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:26:16,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 22:26:16,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 22:26:16,781 INFO L87 Difference]: Start difference. First operand 306 states and 386 transitions. Second operand 6 states. [2020-08-18 22:26:16,911 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-18 22:26:19,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:26:19,479 INFO L93 Difference]: Finished difference Result 722 states and 963 transitions. [2020-08-18 22:26:19,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 22:26:19,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-08-18 22:26:19,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:26:19,487 INFO L225 Difference]: With dead ends: 722 [2020-08-18 22:26:19,487 INFO L226 Difference]: Without dead ends: 441 [2020-08-18 22:26:19,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-08-18 22:26:19,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-08-18 22:26:19,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 308. [2020-08-18 22:26:19,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-08-18 22:26:19,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 388 transitions. [2020-08-18 22:26:19,545 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 388 transitions. Word has length 97 [2020-08-18 22:26:19,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:26:19,546 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 388 transitions. [2020-08-18 22:26:19,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 22:26:19,547 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 388 transitions. [2020-08-18 22:26:19,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-08-18 22:26:19,552 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:26:19,552 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:26:19,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:26:19,553 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:26:19,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:26:19,553 INFO L82 PathProgramCache]: Analyzing trace with hash -492581383, now seen corresponding path program 1 times [2020-08-18 22:26:19,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:26:19,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998116092] [2020-08-18 22:26:19,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:26:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:19,762 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 22:26:19,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:19,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:19,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:19,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:26:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:19,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 22:26:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:19,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:19,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:19,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:19,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 22:26:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:19,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:19,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:19,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:19,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 22:26:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:19,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:19,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:19,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:19,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 22:26:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:19,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:19,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:26:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:19,988 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-18 22:26:19,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998116092] [2020-08-18 22:26:19,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:26:19,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 22:26:19,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901616770] [2020-08-18 22:26:19,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 22:26:19,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:26:19,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 22:26:19,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 22:26:19,994 INFO L87 Difference]: Start difference. First operand 308 states and 388 transitions. Second operand 6 states. [2020-08-18 22:26:20,120 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-18 22:26:20,349 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-08-18 22:26:20,605 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-08-18 22:26:23,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:26:23,852 INFO L93 Difference]: Finished difference Result 945 states and 1246 transitions. [2020-08-18 22:26:23,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 22:26:23,853 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-08-18 22:26:23,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:26:23,861 INFO L225 Difference]: With dead ends: 945 [2020-08-18 22:26:23,861 INFO L226 Difference]: Without dead ends: 662 [2020-08-18 22:26:23,863 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 [2020-08-18 22:26:23,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2020-08-18 22:26:23,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 489. [2020-08-18 22:26:23,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-08-18 22:26:23,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 617 transitions. [2020-08-18 22:26:23,943 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 617 transitions. Word has length 123 [2020-08-18 22:26:23,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:26:23,943 INFO L479 AbstractCegarLoop]: Abstraction has 489 states and 617 transitions. [2020-08-18 22:26:23,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 22:26:23,944 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 617 transitions. [2020-08-18 22:26:23,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-08-18 22:26:23,947 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:26:23,948 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:26:23,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:26:23,948 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:26:23,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:26:23,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1067393612, now seen corresponding path program 1 times [2020-08-18 22:26:23,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:26:23,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091024393] [2020-08-18 22:26:23,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:26:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:24,221 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 22:26:24,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:24,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:24,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:24,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:26:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:24,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 22:26:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:24,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 22:26:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:24,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:24,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:26:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:24,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 22:26:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:24,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 22:26:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:24,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 22:26:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:24,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 22:26:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:24,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 22:26:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:24,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 22:26:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:24,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 22:26:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:24,337 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-08-18 22:26:24,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091024393] [2020-08-18 22:26:24,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:26:24,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 22:26:24,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023915714] [2020-08-18 22:26:24,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 22:26:24,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:26:24,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 22:26:24,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-18 22:26:24,340 INFO L87 Difference]: Start difference. First operand 489 states and 617 transitions. Second operand 7 states. [2020-08-18 22:26:24,497 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-18 22:26:27,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:26:27,376 INFO L93 Difference]: Finished difference Result 1237 states and 1674 transitions. [2020-08-18 22:26:27,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 22:26:27,377 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-08-18 22:26:27,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:26:27,383 INFO L225 Difference]: With dead ends: 1237 [2020-08-18 22:26:27,384 INFO L226 Difference]: Without dead ends: 773 [2020-08-18 22:26:27,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:26:27,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-08-18 22:26:27,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 541. [2020-08-18 22:26:27,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2020-08-18 22:26:27,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 699 transitions. [2020-08-18 22:26:27,479 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 699 transitions. Word has length 110 [2020-08-18 22:26:27,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:26:27,480 INFO L479 AbstractCegarLoop]: Abstraction has 541 states and 699 transitions. [2020-08-18 22:26:27,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 22:26:27,480 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 699 transitions. [2020-08-18 22:26:27,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 22:26:27,485 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:26:27,486 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:26:27,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 22:26:27,486 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:26:27,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:26:27,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1281815870, now seen corresponding path program 1 times [2020-08-18 22:26:27,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:26:27,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419981118] [2020-08-18 22:26:27,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:26:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:27,763 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 22:26:27,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:27,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:27,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:27,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:26:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:27,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 22:26:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:27,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:27,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:27,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 22:26:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:27,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:27,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:27,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:27,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 22:26:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:27,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:27,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:27,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:27,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 22:26:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:27,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:27,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:27,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:27,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 22:26:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:27,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:27,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:26:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:28,047 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-18 22:26:28,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419981118] [2020-08-18 22:26:28,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:26:28,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:26:28,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531564848] [2020-08-18 22:26:28,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:26:28,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:26:28,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:26:28,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:26:28,050 INFO L87 Difference]: Start difference. First operand 541 states and 699 transitions. Second operand 9 states. [2020-08-18 22:26:28,191 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-18 22:26:28,763 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-08-18 22:26:31,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:26:31,219 INFO L93 Difference]: Finished difference Result 1246 states and 1663 transitions. [2020-08-18 22:26:31,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 22:26:31,220 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 143 [2020-08-18 22:26:31,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:26:31,226 INFO L225 Difference]: With dead ends: 1246 [2020-08-18 22:26:31,226 INFO L226 Difference]: Without dead ends: 708 [2020-08-18 22:26:31,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-08-18 22:26:31,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-08-18 22:26:31,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 538. [2020-08-18 22:26:31,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-08-18 22:26:31,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 692 transitions. [2020-08-18 22:26:31,283 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 692 transitions. Word has length 143 [2020-08-18 22:26:31,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:26:31,283 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 692 transitions. [2020-08-18 22:26:31,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:26:31,283 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 692 transitions. [2020-08-18 22:26:31,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 22:26:31,286 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:26:31,287 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:26:31,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 22:26:31,287 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:26:31,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:26:31,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1536881969, now seen corresponding path program 1 times [2020-08-18 22:26:31,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:26:31,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337839174] [2020-08-18 22:26:31,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:26:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,515 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 22:26:31,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:26:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 22:26:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:26:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 22:26:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 22:26:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 22:26:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 22:26:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:26:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,786 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-18 22:26:31,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337839174] [2020-08-18 22:26:31,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:26:31,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 22:26:31,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233662267] [2020-08-18 22:26:31,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:26:31,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:26:31,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:26:31,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:26:31,790 INFO L87 Difference]: Start difference. First operand 538 states and 692 transitions. Second operand 10 states. [2020-08-18 22:26:31,940 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-18 22:26:32,684 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 22:26:32,856 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 22:26:35,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:26:35,409 INFO L93 Difference]: Finished difference Result 1233 states and 1636 transitions. [2020-08-18 22:26:35,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 22:26:35,410 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-08-18 22:26:35,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:26:35,415 INFO L225 Difference]: With dead ends: 1233 [2020-08-18 22:26:35,415 INFO L226 Difference]: Without dead ends: 702 [2020-08-18 22:26:35,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-08-18 22:26:35,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2020-08-18 22:26:35,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 538. [2020-08-18 22:26:35,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-08-18 22:26:35,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 690 transitions. [2020-08-18 22:26:35,467 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 690 transitions. Word has length 152 [2020-08-18 22:26:35,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:26:35,467 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 690 transitions. [2020-08-18 22:26:35,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:26:35,467 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 690 transitions. [2020-08-18 22:26:35,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-18 22:26:35,470 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:26:35,470 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:26:35,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 22:26:35,471 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:26:35,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:26:35,471 INFO L82 PathProgramCache]: Analyzing trace with hash -968590774, now seen corresponding path program 1 times [2020-08-18 22:26:35,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:26:35,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641404139] [2020-08-18 22:26:35,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:26:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:35,681 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 22:26:35,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:35,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:35,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:35,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:26:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:35,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 22:26:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:35,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:35,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:26:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:35,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 22:26:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:35,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:35,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:35,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:35,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 22:26:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:35,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:35,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:35,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:35,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 22:26:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:36,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:36,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:36,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:36,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 22:26:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:36,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:36,057 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-08-18 22:26:36,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641404139] [2020-08-18 22:26:36,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:26:36,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 22:26:36,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286053912] [2020-08-18 22:26:36,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 22:26:36,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:26:36,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 22:26:36,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-08-18 22:26:36,060 INFO L87 Difference]: Start difference. First operand 538 states and 690 transitions. Second operand 13 states. [2020-08-18 22:26:36,190 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-18 22:26:36,941 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 22:26:37,346 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 22:26:37,534 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 22:26:37,729 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 22:26:37,896 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 22:26:38,092 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-08-18 22:26:38,276 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-08-18 22:26:39,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:26:39,998 INFO L93 Difference]: Finished difference Result 1217 states and 1615 transitions. [2020-08-18 22:26:39,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 22:26:39,999 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 146 [2020-08-18 22:26:39,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:26:40,005 INFO L225 Difference]: With dead ends: 1217 [2020-08-18 22:26:40,005 INFO L226 Difference]: Without dead ends: 704 [2020-08-18 22:26:40,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-08-18 22:26:40,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-08-18 22:26:40,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 545. [2020-08-18 22:26:40,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-08-18 22:26:40,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 702 transitions. [2020-08-18 22:26:40,085 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 702 transitions. Word has length 146 [2020-08-18 22:26:40,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:26:40,087 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 702 transitions. [2020-08-18 22:26:40,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 22:26:40,088 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 702 transitions. [2020-08-18 22:26:40,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-08-18 22:26:40,092 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:26:40,092 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:26:40,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 22:26:40,093 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:26:40,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:26:40,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1538409515, now seen corresponding path program 1 times [2020-08-18 22:26:40,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:26:40,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119764090] [2020-08-18 22:26:40,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:26:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:40,411 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 22:26:40,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:40,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:40,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:40,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:26:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:40,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 22:26:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:40,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:40,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:26:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:40,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 22:26:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:40,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:40,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:40,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:40,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 22:26:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:40,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:40,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:40,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:26:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:40,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:26:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:40,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-18 22:26:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:40,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:40,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:40,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:26:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:40,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:26:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:40,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 22:26:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:40,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:40,665 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-08-18 22:26:40,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119764090] [2020-08-18 22:26:40,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:26:40,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 22:26:40,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401610263] [2020-08-18 22:26:40,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 22:26:40,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:26:40,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 22:26:40,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-18 22:26:40,672 INFO L87 Difference]: Start difference. First operand 545 states and 702 transitions. Second operand 11 states. [2020-08-18 22:26:40,806 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-18 22:26:41,804 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-08-18 22:26:41,982 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 22:26:42,152 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 22:26:42,335 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 22:26:42,499 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 22:26:44,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:26:44,208 INFO L93 Difference]: Finished difference Result 1168 states and 1528 transitions. [2020-08-18 22:26:44,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 22:26:44,209 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 158 [2020-08-18 22:26:44,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:26:44,213 INFO L225 Difference]: With dead ends: 1168 [2020-08-18 22:26:44,213 INFO L226 Difference]: Without dead ends: 648 [2020-08-18 22:26:44,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-08-18 22:26:44,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-08-18 22:26:44,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 550. [2020-08-18 22:26:44,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-08-18 22:26:44,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 707 transitions. [2020-08-18 22:26:44,266 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 707 transitions. Word has length 158 [2020-08-18 22:26:44,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:26:44,266 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 707 transitions. [2020-08-18 22:26:44,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 22:26:44,267 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 707 transitions. [2020-08-18 22:26:44,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-08-18 22:26:44,269 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:26:44,270 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:26:44,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 22:26:44,270 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:26:44,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:26:44,271 INFO L82 PathProgramCache]: Analyzing trace with hash -432995670, now seen corresponding path program 1 times [2020-08-18 22:26:44,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:26:44,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971539720] [2020-08-18 22:26:44,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:26:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:44,527 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 22:26:44,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:44,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:44,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:44,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:26:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:44,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 22:26:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:44,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:44,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:26:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:44,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 22:26:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:44,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:44,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:44,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:26:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:44,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:26:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:44,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 22:26:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:44,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:44,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:44,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:44,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:44,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-18 22:26:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:44,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:44,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:44,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:44,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 22:26:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:44,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:44,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:26:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:44,791 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-08-18 22:26:44,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971539720] [2020-08-18 22:26:44,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:26:44,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 22:26:44,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124350453] [2020-08-18 22:26:44,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:26:44,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:26:44,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:26:44,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:26:44,794 INFO L87 Difference]: Start difference. First operand 550 states and 707 transitions. Second operand 10 states. [2020-08-18 22:26:44,940 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-18 22:26:45,660 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-08-18 22:26:46,468 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 22:26:47,335 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 22:26:47,505 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 22:26:48,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:26:48,804 INFO L93 Difference]: Finished difference Result 1271 states and 1638 transitions. [2020-08-18 22:26:48,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 22:26:48,805 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 158 [2020-08-18 22:26:48,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:26:48,809 INFO L225 Difference]: With dead ends: 1271 [2020-08-18 22:26:48,809 INFO L226 Difference]: Without dead ends: 746 [2020-08-18 22:26:48,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-08-18 22:26:48,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2020-08-18 22:26:48,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 430. [2020-08-18 22:26:48,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-08-18 22:26:48,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 531 transitions. [2020-08-18 22:26:48,854 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 531 transitions. Word has length 158 [2020-08-18 22:26:48,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:26:48,855 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 531 transitions. [2020-08-18 22:26:48,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:26:48,855 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 531 transitions. [2020-08-18 22:26:48,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-18 22:26:48,857 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:26:48,857 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:26:48,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 22:26:48,858 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:26:48,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:26:48,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1391356121, now seen corresponding path program 1 times [2020-08-18 22:26:48,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:26:48,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673332279] [2020-08-18 22:26:48,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:26:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:49,094 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 22:26:49,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:49,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:49,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:49,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:26:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:49,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 22:26:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:49,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 22:26:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:49,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:49,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:26:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:49,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 22:26:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:49,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 22:26:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:49,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 22:26:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:49,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 22:26:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:49,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 22:26:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:49,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 22:26:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:49,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 22:26:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:49,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 22:26:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:49,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 22:26:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:49,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 22:26:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:49,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 22:26:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:49,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:49,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 22:26:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:49,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:49,257 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-08-18 22:26:49,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673332279] [2020-08-18 22:26:49,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:26:49,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-18 22:26:49,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658218890] [2020-08-18 22:26:49,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:26:49,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:26:49,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:26:49,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:26:49,260 INFO L87 Difference]: Start difference. First operand 430 states and 531 transitions. Second operand 8 states. [2020-08-18 22:26:49,385 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-18 22:26:52,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:26:52,252 INFO L93 Difference]: Finished difference Result 980 states and 1265 transitions. [2020-08-18 22:26:52,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 22:26:52,253 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 151 [2020-08-18 22:26:52,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:26:52,258 INFO L225 Difference]: With dead ends: 980 [2020-08-18 22:26:52,258 INFO L226 Difference]: Without dead ends: 592 [2020-08-18 22:26:52,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:26:52,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-08-18 22:26:52,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 453. [2020-08-18 22:26:52,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-08-18 22:26:52,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 568 transitions. [2020-08-18 22:26:52,302 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 568 transitions. Word has length 151 [2020-08-18 22:26:52,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:26:52,303 INFO L479 AbstractCegarLoop]: Abstraction has 453 states and 568 transitions. [2020-08-18 22:26:52,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:26:52,303 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 568 transitions. [2020-08-18 22:26:52,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-18 22:26:52,305 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:26:52,305 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:26:52,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 22:26:52,306 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:26:52,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:26:52,306 INFO L82 PathProgramCache]: Analyzing trace with hash -642852378, now seen corresponding path program 2 times [2020-08-18 22:26:52,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:26:52,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028659919] [2020-08-18 22:26:52,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:26:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:52,555 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 22:26:52,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:52,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:52,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:52,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:26:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:52,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 22:26:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:52,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:52,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:26:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:52,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 22:26:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:52,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:52,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:52,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:26:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:52,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:26:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:52,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 22:26:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:52,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:52,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:52,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:26:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:52,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:26:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:52,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 22:26:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:52,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:52,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:52,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:26:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:52,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:26:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:52,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 22:26:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:52,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:52,847 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-18 22:26:52,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028659919] [2020-08-18 22:26:52,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:26:52,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 22:26:52,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813502461] [2020-08-18 22:26:52,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 22:26:52,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:26:52,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 22:26:52,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-18 22:26:52,849 INFO L87 Difference]: Start difference. First operand 453 states and 568 transitions. Second operand 7 states. [2020-08-18 22:26:53,003 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-18 22:26:53,363 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-08-18 22:26:53,609 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-08-18 22:26:55,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:26:55,777 INFO L93 Difference]: Finished difference Result 553 states and 710 transitions. [2020-08-18 22:26:55,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 22:26:55,777 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-08-18 22:26:55,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:26:55,778 INFO L225 Difference]: With dead ends: 553 [2020-08-18 22:26:55,778 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 22:26:55,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 22:26:55,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 22:26:55,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 22:26:55,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 22:26:55,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 22:26:55,781 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 164 [2020-08-18 22:26:55,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:26:55,782 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 22:26:55,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 22:26:55,782 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 22:26:55,782 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 22:26:55,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 22:26:55,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 22:26:56,070 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 7 [2020-08-18 22:26:56,197 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 7 [2020-08-18 22:26:57,011 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 7 [2020-08-18 22:26:57,146 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 7 [2020-08-18 22:26:57,272 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 6 [2020-08-18 22:26:58,690 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 7 [2020-08-18 22:26:58,831 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 7