/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 false -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 11:03:06,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:03:06,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:03:06,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:03:06,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:03:06,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:03:06,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:03:06,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:03:06,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:03:06,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:03:06,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:03:06,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:03:06,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:03:06,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:03:06,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:03:06,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:03:06,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:03:06,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:03:06,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:03:06,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:03:06,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:03:06,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:03:06,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:03:06,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:03:06,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:03:06,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:03:06,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:03:06,873 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:03:06,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:03:06,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:03:06,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:03:06,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:03:06,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:03:06,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:03:06,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:03:06,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:03:06,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:03:06,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:03:06,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:03:06,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:03:06,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:03:06,883 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 11:03:06,925 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:03:06,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:03:06,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:03:06,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:03:06,928 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:03:06,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:03:06,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:03:06,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:03:06,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:03:06,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:03:06,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:03:06,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:03:06,931 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:03:06,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:03:06,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:03:06,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:03:06,932 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:03:06,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:03:06,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:03:06,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:03:06,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:03:06,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:03:06,933 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:03:06,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:03:06,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:03:06,933 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:03:06,934 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 11:03:06,934 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 -> false [2020-08-18 11:03:07,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:03:07,233 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:03:07,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:03:07,240 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:03:07,240 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:03:07,241 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-18 11:03:07,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9421a9716/05c6e1b0969d4234914d07352f7616e6/FLAGe15daae3a [2020-08-18 11:03:07,921 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:03:07,922 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-18 11:03:07,944 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9421a9716/05c6e1b0969d4234914d07352f7616e6/FLAGe15daae3a [2020-08-18 11:03:08,169 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9421a9716/05c6e1b0969d4234914d07352f7616e6 [2020-08-18 11:03:08,177 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:03:08,179 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:03:08,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:03:08,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:03:08,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:03:08,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:03:08" (1/1) ... [2020-08-18 11:03:08,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@427c53a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:03:08, skipping insertion in model container [2020-08-18 11:03:08,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:03:08" (1/1) ... [2020-08-18 11:03:08,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:03:08,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:03:08,699 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 11:03:08,700 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 11:03:08,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:03:08,992 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:03:09,057 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 11:03:09,057 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 11:03:09,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:03:09,294 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:03:09,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:03:09 WrapperNode [2020-08-18 11:03:09,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:03:09,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:03:09,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:03:09,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:03:09,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:03:09" (1/1) ... [2020-08-18 11:03:09,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:03:09" (1/1) ... [2020-08-18 11:03:09,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:03:09" (1/1) ... [2020-08-18 11:03:09,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:03:09" (1/1) ... [2020-08-18 11:03:09,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:03:09" (1/1) ... [2020-08-18 11:03:09,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:03:09" (1/1) ... [2020-08-18 11:03:09,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:03:09" (1/1) ... [2020-08-18 11:03:09,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:03:09,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:03:09,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:03:09,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:03:09,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:03:09" (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 11:03:09,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:03:09,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:03:09,504 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-08-18 11:03:09,504 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-18 11:03:09,504 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2020-08-18 11:03:09,505 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2020-08-18 11:03:09,505 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-18 11:03:09,506 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-18 11:03:09,506 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_name [2020-08-18 11:03:09,507 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 11:03:09,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 11:03:09,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 11:03:09,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 11:03:09,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 11:03:09,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 11:03:09,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 11:03:09,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 11:03:09,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 11:03:09,510 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2020-08-18 11:03:09,511 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_allocate_port [2020-08-18 11:03:09,511 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_free_port [2020-08-18 11:03:09,511 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_name [2020-08-18 11:03:09,511 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_valid [2020-08-18 11:03:09,512 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_len [2020-08-18 11:03:09,512 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_start [2020-08-18 11:03:09,512 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_valid [2020-08-18 11:03:09,512 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_len [2020-08-18 11:03:09,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_isa_probe [2020-08-18 11:03:09,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_pnp_probe [2020-08-18 11:03:09,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_init [2020-08-18 11:03:09,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_exit [2020-08-18 11:03:09,513 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:03:09,514 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-18 11:03:09,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2020-08-18 11:03:09,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-18 11:03:09,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2020-08-18 11:03:09,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2020-08-18 11:03:09,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2020-08-18 11:03:09,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2020-08-18 11:03:09,515 INFO L138 BoogieDeclarations]: Found implementation of procedure __gameport_register_port [2020-08-18 11:03:09,515 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-18 11:03:09,515 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-08-18 11:03:09,515 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-08-18 11:03:09,516 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_phys [2020-08-18 11:03:09,516 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_unregister_port [2020-08-18 11:03:09,516 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2020-08-18 11:03:09,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 11:03:09,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 11:03:09,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_1 [2020-08-18 11:03:09,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2020-08-18 11:03:09,517 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2020-08-18 11:03:09,517 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_get_resource [2020-08-18 11:03:09,517 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_register_driver [2020-08-18 11:03:09,517 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_unregister_driver [2020-08-18 11:03:09,518 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-18 11:03:09,518 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2020-08-18 11:03:09,518 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 11:03:09,518 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 11:03:09,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:03:09,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 11:03:09,519 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-18 11:03:09,519 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-18 11:03:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-08-18 11:03:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 11:03:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-18 11:03:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2020-08-18 11:03:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2020-08-18 11:03:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2020-08-18 11:03:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:03:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-08-18 11:03:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-08-18 11:03:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-18 11:03:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-18 11:03:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_name [2020-08-18 11:03:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 11:03:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2020-08-18 11:03:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-18 11:03:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2020-08-18 11:03:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 11:03:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 11:03:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 11:03:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 11:03:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 11:03:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 11:03:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 11:03:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 11:03:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 11:03:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 11:03:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 11:03:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 11:03:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 11:03:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 11:03:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 11:03:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2020-08-18 11:03:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2020-08-18 11:03:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure __gameport_register_port [2020-08-18 11:03:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_unregister_port [2020-08-18 11:03:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_phys [2020-08-18 11:03:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_allocate_port [2020-08-18 11:03:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_free_port [2020-08-18 11:03:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_name [2020-08-18 11:03:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_get_resource [2020-08-18 11:03:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_valid [2020-08-18 11:03:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_len [2020-08-18 11:03:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_start [2020-08-18 11:03:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_valid [2020-08-18 11:03:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_len [2020-08-18 11:03:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_register_driver [2020-08-18 11:03:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_unregister_driver [2020-08-18 11:03:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_isa_probe [2020-08-18 11:03:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:03:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:03:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 11:03:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_pnp_probe [2020-08-18 11:03:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_init [2020-08-18 11:03:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_exit [2020-08-18 11:03:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 11:03:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 11:03:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_1 [2020-08-18 11:03:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:03:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2020-08-18 11:03:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-18 11:03:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2020-08-18 11:03:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2020-08-18 11:03:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2020-08-18 11:03:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2020-08-18 11:03:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 11:03:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:03:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:03:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 11:03:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 11:03:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:03:10,357 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 11:03:10,997 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:03:10,998 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 11:03:11,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:03:11 BoogieIcfgContainer [2020-08-18 11:03:11,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:03:11,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:03:11,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:03:11,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:03:11,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:03:08" (1/3) ... [2020-08-18 11:03:11,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@689e3857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:03:11, skipping insertion in model container [2020-08-18 11:03:11,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:03:09" (2/3) ... [2020-08-18 11:03:11,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@689e3857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:03:11, skipping insertion in model container [2020-08-18 11:03:11,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:03:11" (3/3) ... [2020-08-18 11:03:11,017 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 11:03:11,027 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:03:11,035 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:03:11,049 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:03:11,076 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:03:11,076 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:03:11,076 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:03:11,076 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:03:11,076 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:03:11,077 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:03:11,077 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:03:11,077 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:03:11,103 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states. [2020-08-18 11:03:11,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-18 11:03:11,118 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:03:11,119 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 11:03:11,120 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:03:11,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:03:11,126 INFO L82 PathProgramCache]: Analyzing trace with hash -2083768503, now seen corresponding path program 1 times [2020-08-18 11:03:11,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:03:11,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654826347] [2020-08-18 11:03:11,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:03:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:11,891 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 11:03:11,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:11,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:03:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:11,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:11,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:11,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 11:03:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:11,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 11:03:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:12,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:12,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 11:03:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:12,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 11:03:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:12,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 11:03:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:12,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 11:03:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:12,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 11:03:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:12,083 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 11:03:12,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654826347] [2020-08-18 11:03:12,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:03:12,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 11:03:12,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807099933] [2020-08-18 11:03:12,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 11:03:12,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:03:12,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 11:03:12,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-18 11:03:12,109 INFO L87 Difference]: Start difference. First operand 348 states. Second operand 10 states. [2020-08-18 11:03:12,344 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-18 11:03:13,375 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-18 11:03:14,376 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-18 11:03:14,527 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-18 11:03:14,694 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-18 11:03:14,852 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-18 11:03:16,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:03:16,699 INFO L93 Difference]: Finished difference Result 815 states and 1118 transitions. [2020-08-18 11:03:16,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 11:03:16,702 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-08-18 11:03:16,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:03:16,720 INFO L225 Difference]: With dead ends: 815 [2020-08-18 11:03:16,720 INFO L226 Difference]: Without dead ends: 429 [2020-08-18 11:03:16,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-08-18 11:03:16,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-08-18 11:03:16,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 306. [2020-08-18 11:03:16,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-08-18 11:03:16,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 386 transitions. [2020-08-18 11:03:16,841 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 386 transitions. Word has length 91 [2020-08-18 11:03:16,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:03:16,842 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 386 transitions. [2020-08-18 11:03:16,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 11:03:16,842 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 386 transitions. [2020-08-18 11:03:16,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 11:03:16,848 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:03:16,848 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 11:03:16,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:03:16,849 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:03:16,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:03:16,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1314856814, now seen corresponding path program 1 times [2020-08-18 11:03:16,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:03:16,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174934056] [2020-08-18 11:03:16,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:03:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:17,144 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 11:03:17,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:17,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:03:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:17,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:17,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:17,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 11:03:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:17,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 11:03:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:17,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:17,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:03:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:17,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 11:03:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:17,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 11:03:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:17,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 11:03:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:17,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 11:03:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:17,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 11:03:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:17,274 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 11:03:17,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174934056] [2020-08-18 11:03:17,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:03:17,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:03:17,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710208938] [2020-08-18 11:03:17,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:03:17,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:03:17,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:03:17,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:03:17,278 INFO L87 Difference]: Start difference. First operand 306 states and 386 transitions. Second operand 6 states. [2020-08-18 11:03:17,445 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-18 11:03:19,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:03:19,856 INFO L93 Difference]: Finished difference Result 722 states and 963 transitions. [2020-08-18 11:03:19,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 11:03:19,857 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-08-18 11:03:19,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:03:19,863 INFO L225 Difference]: With dead ends: 722 [2020-08-18 11:03:19,863 INFO L226 Difference]: Without dead ends: 441 [2020-08-18 11:03:19,865 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 11:03:19,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-08-18 11:03:19,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 308. [2020-08-18 11:03:19,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-08-18 11:03:19,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 388 transitions. [2020-08-18 11:03:19,942 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 388 transitions. Word has length 97 [2020-08-18 11:03:19,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:03:19,946 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 388 transitions. [2020-08-18 11:03:19,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 11:03:19,946 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 388 transitions. [2020-08-18 11:03:19,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-08-18 11:03:19,954 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:03:19,955 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 11:03:19,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:03:19,955 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:03:19,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:03:19,956 INFO L82 PathProgramCache]: Analyzing trace with hash -492581383, now seen corresponding path program 1 times [2020-08-18 11:03:19,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:03:19,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982445620] [2020-08-18 11:03:19,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:03:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,210 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 11:03:20,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:03:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 11:03:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 11:03:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 11:03:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 11:03:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:03:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,456 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 11:03:20,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982445620] [2020-08-18 11:03:20,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:03:20,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:03:20,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875755090] [2020-08-18 11:03:20,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:03:20,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:03:20,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:03:20,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:03:20,460 INFO L87 Difference]: Start difference. First operand 308 states and 388 transitions. Second operand 6 states. [2020-08-18 11:03:20,594 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-18 11:03:20,813 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-08-18 11:03:20,973 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-08-18 11:03:24,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:03:24,020 INFO L93 Difference]: Finished difference Result 945 states and 1246 transitions. [2020-08-18 11:03:24,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 11:03:24,020 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-08-18 11:03:24,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:03:24,027 INFO L225 Difference]: With dead ends: 945 [2020-08-18 11:03:24,027 INFO L226 Difference]: Without dead ends: 662 [2020-08-18 11:03:24,028 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 11:03:24,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2020-08-18 11:03:24,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 489. [2020-08-18 11:03:24,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-08-18 11:03:24,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 617 transitions. [2020-08-18 11:03:24,086 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 617 transitions. Word has length 123 [2020-08-18 11:03:24,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:03:24,086 INFO L479 AbstractCegarLoop]: Abstraction has 489 states and 617 transitions. [2020-08-18 11:03:24,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 11:03:24,086 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 617 transitions. [2020-08-18 11:03:24,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-08-18 11:03:24,089 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:03:24,089 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 11:03:24,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:03:24,090 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:03:24,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:03:24,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1067393612, now seen corresponding path program 1 times [2020-08-18 11:03:24,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:03:24,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62541847] [2020-08-18 11:03:24,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:03:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:24,321 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 11:03:24,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:24,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:03:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:24,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:24,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:24,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 11:03:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:24,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 11:03:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:24,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:24,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:03:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:24,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 11:03:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:24,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 11:03:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:24,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 11:03:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:24,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 11:03:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:24,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 11:03:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:24,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 11:03:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:24,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 11:03:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:24,454 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 11:03:24,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62541847] [2020-08-18 11:03:24,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:03:24,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 11:03:24,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661944891] [2020-08-18 11:03:24,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 11:03:24,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:03:24,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 11:03:24,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-18 11:03:24,457 INFO L87 Difference]: Start difference. First operand 489 states and 617 transitions. Second operand 7 states. [2020-08-18 11:03:24,576 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-18 11:03:27,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:03:27,363 INFO L93 Difference]: Finished difference Result 1237 states and 1674 transitions. [2020-08-18 11:03:27,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 11:03:27,364 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-08-18 11:03:27,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:03:27,370 INFO L225 Difference]: With dead ends: 1237 [2020-08-18 11:03:27,370 INFO L226 Difference]: Without dead ends: 773 [2020-08-18 11:03:27,373 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 11:03:27,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-08-18 11:03:27,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 541. [2020-08-18 11:03:27,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2020-08-18 11:03:27,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 699 transitions. [2020-08-18 11:03:27,473 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 699 transitions. Word has length 110 [2020-08-18 11:03:27,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:03:27,475 INFO L479 AbstractCegarLoop]: Abstraction has 541 states and 699 transitions. [2020-08-18 11:03:27,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 11:03:27,476 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 699 transitions. [2020-08-18 11:03:27,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-18 11:03:27,480 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:03:27,481 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:03:27,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:03:27,482 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:03:27,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:03:27,482 INFO L82 PathProgramCache]: Analyzing trace with hash 790920921, now seen corresponding path program 1 times [2020-08-18 11:03:27,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:03:27,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183342287] [2020-08-18 11:03:27,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:03:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:27,731 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 11:03:27,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:27,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:03:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:27,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:27,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:27,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 11:03:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:27,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:27,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 11:03:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:27,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:27,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:27,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:27,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:27,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 11:03:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:27,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:27,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:27,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:27,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:27,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 11:03:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:27,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:27,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:27,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:27,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 11:03:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:27,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:27,958 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 11:03:27,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183342287] [2020-08-18 11:03:27,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:03:27,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 11:03:27,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371200041] [2020-08-18 11:03:27,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:03:27,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:03:27,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:03:27,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:03:27,967 INFO L87 Difference]: Start difference. First operand 541 states and 699 transitions. Second operand 9 states. [2020-08-18 11:03:28,131 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-18 11:03:28,649 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-08-18 11:03:30,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:03:30,699 INFO L93 Difference]: Finished difference Result 1246 states and 1663 transitions. [2020-08-18 11:03:30,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 11:03:30,700 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2020-08-18 11:03:30,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:03:30,706 INFO L225 Difference]: With dead ends: 1246 [2020-08-18 11:03:30,706 INFO L226 Difference]: Without dead ends: 708 [2020-08-18 11:03:30,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-08-18 11:03:30,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-08-18 11:03:30,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 538. [2020-08-18 11:03:30,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-08-18 11:03:30,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 692 transitions. [2020-08-18 11:03:30,797 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 692 transitions. Word has length 137 [2020-08-18 11:03:30,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:03:30,802 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 692 transitions. [2020-08-18 11:03:30,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:03:30,802 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 692 transitions. [2020-08-18 11:03:30,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 11:03:30,807 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:03:30,807 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 11:03:30,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 11:03:30,808 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:03:30,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:03:30,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1536881969, now seen corresponding path program 1 times [2020-08-18 11:03:30,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:03:30,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142234822] [2020-08-18 11:03:30,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:03:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:31,086 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 11:03:31,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:31,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:03:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:31,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:31,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:31,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 11:03:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:31,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:31,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:03:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:31,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 11:03:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:31,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:31,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:31,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:31,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 11:03:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:31,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:31,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:31,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:31,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 11:03:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:31,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:31,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:31,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:31,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 11:03:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:31,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:31,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:03:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:31,307 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 11:03:31,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142234822] [2020-08-18 11:03:31,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:03:31,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 11:03:31,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262883326] [2020-08-18 11:03:31,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 11:03:31,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:03:31,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 11:03:31,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 11:03:31,310 INFO L87 Difference]: Start difference. First operand 538 states and 692 transitions. Second operand 10 states. [2020-08-18 11:03:31,448 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-18 11:03:32,183 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 11:03:32,368 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 11:03:34,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:03:34,909 INFO L93 Difference]: Finished difference Result 1233 states and 1636 transitions. [2020-08-18 11:03:34,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 11:03:34,910 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-08-18 11:03:34,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:03:34,915 INFO L225 Difference]: With dead ends: 1233 [2020-08-18 11:03:34,915 INFO L226 Difference]: Without dead ends: 702 [2020-08-18 11:03:34,918 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 11:03:34,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2020-08-18 11:03:34,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 538. [2020-08-18 11:03:34,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-08-18 11:03:34,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 690 transitions. [2020-08-18 11:03:34,966 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 690 transitions. Word has length 152 [2020-08-18 11:03:34,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:03:34,967 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 690 transitions. [2020-08-18 11:03:34,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 11:03:34,967 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 690 transitions. [2020-08-18 11:03:34,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 11:03:34,970 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:03:34,970 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 11:03:34,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 11:03:34,970 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:03:34,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:03:34,971 INFO L82 PathProgramCache]: Analyzing trace with hash -436283409, now seen corresponding path program 1 times [2020-08-18 11:03:34,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:03:34,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182152784] [2020-08-18 11:03:34,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:03:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:35,185 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 11:03:35,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:35,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:03:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:35,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:35,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:35,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 11:03:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:35,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:35,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:03:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:35,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 11:03:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:35,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:35,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:35,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:35,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 11:03:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:35,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:35,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:35,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:35,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 11:03:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:35,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:35,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:35,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:35,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 11:03:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:35,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:35,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:03:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:35,491 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 11:03:35,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182152784] [2020-08-18 11:03:35,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:03:35,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 11:03:35,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677548557] [2020-08-18 11:03:35,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 11:03:35,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:03:35,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 11:03:35,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-08-18 11:03:35,493 INFO L87 Difference]: Start difference. First operand 538 states and 690 transitions. Second operand 13 states. [2020-08-18 11:03:35,636 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-18 11:03:36,476 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 11:03:36,913 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 11:03:37,117 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 11:03:37,310 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 11:03:37,498 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-18 11:03:37,682 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-08-18 11:03:37,886 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-08-18 11:03:39,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:03:39,712 INFO L93 Difference]: Finished difference Result 1217 states and 1615 transitions. [2020-08-18 11:03:39,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 11:03:39,713 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-18 11:03:39,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:03:39,719 INFO L225 Difference]: With dead ends: 1217 [2020-08-18 11:03:39,719 INFO L226 Difference]: Without dead ends: 704 [2020-08-18 11:03:39,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-08-18 11:03:39,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-08-18 11:03:39,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 545. [2020-08-18 11:03:39,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-08-18 11:03:39,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 702 transitions. [2020-08-18 11:03:39,783 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 702 transitions. Word has length 152 [2020-08-18 11:03:39,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:03:39,784 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 702 transitions. [2020-08-18 11:03:39,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 11:03:39,784 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 702 transitions. [2020-08-18 11:03:39,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-18 11:03:39,787 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:03:39,788 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 11:03:39,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 11:03:39,788 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:03:39,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:03:39,789 INFO L82 PathProgramCache]: Analyzing trace with hash 948696336, now seen corresponding path program 1 times [2020-08-18 11:03:39,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:03:39,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15203959] [2020-08-18 11:03:39,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:03:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,038 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 11:03:40,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:03:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 11:03:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:03:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 11:03:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 11:03:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:03:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-18 11:03:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:03:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 11:03:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:03:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,308 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-18 11:03:40,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15203959] [2020-08-18 11:03:40,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:03:40,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 11:03:40,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239055013] [2020-08-18 11:03:40,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 11:03:40,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:03:40,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 11:03:40,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:03:40,313 INFO L87 Difference]: Start difference. First operand 545 states and 702 transitions. Second operand 11 states. [2020-08-18 11:03:40,461 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-18 11:03:41,567 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-08-18 11:03:41,760 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 11:03:41,933 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 11:03:42,126 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 11:03:42,293 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 11:03:44,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:03:44,048 INFO L93 Difference]: Finished difference Result 1168 states and 1528 transitions. [2020-08-18 11:03:44,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 11:03:44,049 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 164 [2020-08-18 11:03:44,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:03:44,053 INFO L225 Difference]: With dead ends: 1168 [2020-08-18 11:03:44,053 INFO L226 Difference]: Without dead ends: 648 [2020-08-18 11:03:44,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-08-18 11:03:44,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-08-18 11:03:44,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 550. [2020-08-18 11:03:44,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-08-18 11:03:44,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 707 transitions. [2020-08-18 11:03:44,110 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 707 transitions. Word has length 164 [2020-08-18 11:03:44,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:03:44,111 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 707 transitions. [2020-08-18 11:03:44,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 11:03:44,111 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 707 transitions. [2020-08-18 11:03:44,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 11:03:44,114 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:03:44,114 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 11:03:44,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 11:03:44,114 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:03:44,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:03:44,115 INFO L82 PathProgramCache]: Analyzing trace with hash 925896005, now seen corresponding path program 2 times [2020-08-18 11:03:44,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:03:44,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633675160] [2020-08-18 11:03:44,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:03:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:44,405 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 11:03:44,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:44,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:03:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:44,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:44,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:44,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 11:03:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:44,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:44,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:03:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:44,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 11:03:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:44,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:44,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:44,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:03:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:44,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:44,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 11:03:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:44,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:44,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:44,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:44,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-18 11:03:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:44,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:44,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:44,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:44,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 11:03:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:44,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:44,631 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-08-18 11:03:44,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633675160] [2020-08-18 11:03:44,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:03:44,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 11:03:44,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025971265] [2020-08-18 11:03:44,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 11:03:44,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:03:44,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 11:03:44,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 11:03:44,634 INFO L87 Difference]: Start difference. First operand 550 states and 707 transitions. Second operand 10 states. [2020-08-18 11:03:44,810 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-18 11:03:45,672 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-08-18 11:03:46,619 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 11:03:47,247 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 11:03:47,410 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-18 11:03:48,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:03:48,369 INFO L93 Difference]: Finished difference Result 1271 states and 1638 transitions. [2020-08-18 11:03:48,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 11:03:48,370 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-08-18 11:03:48,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:03:48,377 INFO L225 Difference]: With dead ends: 1271 [2020-08-18 11:03:48,377 INFO L226 Difference]: Without dead ends: 746 [2020-08-18 11:03:48,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-08-18 11:03:48,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2020-08-18 11:03:48,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 430. [2020-08-18 11:03:48,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-08-18 11:03:48,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 531 transitions. [2020-08-18 11:03:48,428 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 531 transitions. Word has length 152 [2020-08-18 11:03:48,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:03:48,428 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 531 transitions. [2020-08-18 11:03:48,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 11:03:48,429 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 531 transitions. [2020-08-18 11:03:48,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-18 11:03:48,431 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:03:48,431 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:03:48,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 11:03:48,431 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:03:48,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:03:48,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1391356121, now seen corresponding path program 1 times [2020-08-18 11:03:48,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:03:48,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000874885] [2020-08-18 11:03:48,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:03:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:48,692 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 11:03:48,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:48,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:03:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:48,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:48,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:48,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 11:03:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:48,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 11:03:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:48,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:48,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:03:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:48,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 11:03:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:48,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 11:03:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:48,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 11:03:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:48,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 11:03:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:48,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 11:03:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:48,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 11:03:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:48,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 11:03:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:48,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 11:03:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:48,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 11:03:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:48,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 11:03:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:48,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 11:03:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:48,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:48,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 11:03:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:48,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:48,917 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 11:03:48,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000874885] [2020-08-18 11:03:48,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:03:48,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-18 11:03:48,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662010576] [2020-08-18 11:03:48,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:03:48,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:03:48,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:03:48,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:03:48,920 INFO L87 Difference]: Start difference. First operand 430 states and 531 transitions. Second operand 8 states. [2020-08-18 11:03:49,095 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-18 11:03:52,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:03:52,264 INFO L93 Difference]: Finished difference Result 980 states and 1265 transitions. [2020-08-18 11:03:52,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 11:03:52,265 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 151 [2020-08-18 11:03:52,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:03:52,269 INFO L225 Difference]: With dead ends: 980 [2020-08-18 11:03:52,270 INFO L226 Difference]: Without dead ends: 592 [2020-08-18 11:03:52,272 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 11:03:52,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-08-18 11:03:52,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 453. [2020-08-18 11:03:52,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-08-18 11:03:52,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 568 transitions. [2020-08-18 11:03:52,317 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 568 transitions. Word has length 151 [2020-08-18 11:03:52,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:03:52,317 INFO L479 AbstractCegarLoop]: Abstraction has 453 states and 568 transitions. [2020-08-18 11:03:52,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:03:52,317 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 568 transitions. [2020-08-18 11:03:52,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-18 11:03:52,320 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:03:52,320 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 11:03:52,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 11:03:52,320 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:03:52,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:03:52,321 INFO L82 PathProgramCache]: Analyzing trace with hash -642852378, now seen corresponding path program 2 times [2020-08-18 11:03:52,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:03:52,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092780226] [2020-08-18 11:03:52,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:03:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:52,573 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 11:03:52,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:52,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:03:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:52,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:52,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:52,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 11:03:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:52,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:52,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:03:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:52,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 11:03:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:52,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:52,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:52,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:03:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:52,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:52,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 11:03:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:52,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:52,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:52,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:03:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:52,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:52,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 11:03:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:52,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:52,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:52,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:03:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:52,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:52,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 11:03:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:52,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:52,792 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 11:03:52,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092780226] [2020-08-18 11:03:52,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:03:52,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 11:03:52,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963445812] [2020-08-18 11:03:52,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 11:03:52,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:03:52,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 11:03:52,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-18 11:03:52,794 INFO L87 Difference]: Start difference. First operand 453 states and 568 transitions. Second operand 7 states. [2020-08-18 11:03:52,933 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-18 11:03:53,177 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-08-18 11:03:53,350 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-08-18 11:03:55,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:03:55,349 INFO L93 Difference]: Finished difference Result 553 states and 710 transitions. [2020-08-18 11:03:55,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 11:03:55,349 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-08-18 11:03:55,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:03:55,351 INFO L225 Difference]: With dead ends: 553 [2020-08-18 11:03:55,351 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 11:03:55,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:03:55,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 11:03:55,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 11:03:55,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 11:03:55,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 11:03:55,355 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 164 [2020-08-18 11:03:55,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:03:55,355 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 11:03:55,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 11:03:55,355 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 11:03:55,356 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 11:03:55,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 11:03:55,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 11:03:59,344 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 12 [2020-08-18 11:03:59,483 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-18 11:03:59,718 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-18 11:03:59,830 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-18 11:03:59,962 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 25 [2020-08-18 11:04:00,222 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 38 [2020-08-18 11:04:00,335 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 18 [2020-08-18 11:04:00,460 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 21 [2020-08-18 11:04:00,641 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 8 [2020-08-18 11:04:00,782 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 11 [2020-08-18 11:04:00,887 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-18 11:04:01,159 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 8 [2020-08-18 11:04:01,272 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-18 11:04:01,477 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 12 [2020-08-18 11:04:01,585 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-18 11:04:01,830 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 38 [2020-08-18 11:04:02,030 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-18 11:04:02,225 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 21 [2020-08-18 11:04:02,329 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-18 11:04:02,585 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 136 [2020-08-18 11:04:02,944 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 12 [2020-08-18 11:04:03,061 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 25 [2020-08-18 11:04:03,373 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 25 [2020-08-18 11:04:03,602 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 25