/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -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 [2020-08-19 07:19:57,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 07:19:57,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 07:19:57,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 07:19:57,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 07:19:57,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 07:19:57,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 07:19:57,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 07:19:57,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 07:19:57,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 07:19:57,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 07:19:57,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 07:19:57,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 07:19:57,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 07:19:57,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 07:19:57,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 07:19:57,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 07:19:57,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 07:19:57,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 07:19:57,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 07:19:57,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 07:19:57,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 07:19:57,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 07:19:57,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 07:19:57,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 07:19:57,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 07:19:57,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 07:19:57,189 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 07:19:57,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 07:19:57,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 07:19:57,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 07:19:57,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 07:19:57,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 07:19:57,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 07:19:57,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 07:19:57,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 07:19:57,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 07:19:57,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 07:19:57,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 07:19:57,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 07:19:57,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 07:19:57,197 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 [2020-08-19 07:19:57,221 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 07:19:57,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 07:19:57,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 07:19:57,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 07:19:57,223 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 07:19:57,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 07:19:57,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 07:19:57,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 07:19:57,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 07:19:57,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 07:19:57,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 07:19:57,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 07:19:57,224 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 07:19:57,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 07:19:57,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 07:19:57,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 07:19:57,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 07:19:57,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 07:19:57,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 07:19:57,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 07:19:57,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 07:19:57,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 07:19:57,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 07:19:57,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 07:19:57,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 07:19:57,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 07:19:57,227 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-19 07:19:57,227 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 07:19:57,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 07:19:57,567 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 07:19:57,571 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 07:19:57,572 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 07:19:57,573 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 07:19:57,574 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-19 07:19:57,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/003d1fd6d/d12c820351bd491f96cf0093dbbff5a8/FLAGc9aa725e9 [2020-08-19 07:19:58,276 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 07:19:58,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-19 07:19:58,307 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/003d1fd6d/d12c820351bd491f96cf0093dbbff5a8/FLAGc9aa725e9 [2020-08-19 07:19:58,470 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/003d1fd6d/d12c820351bd491f96cf0093dbbff5a8 [2020-08-19 07:19:58,480 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 07:19:58,481 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 07:19:58,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 07:19:58,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 07:19:58,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 07:19:58,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 07:19:58" (1/1) ... [2020-08-19 07:19:58,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b424a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 07:19:58, skipping insertion in model container [2020-08-19 07:19:58,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 07:19:58" (1/1) ... [2020-08-19 07:19:58,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 07:19:58,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 07:19:58,914 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1323] [2020-08-19 07:19:58,915 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] [2020-08-19 07:19:59,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 07:19:59,512 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 07:19:59,564 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1323] [2020-08-19 07:19:59,565 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] [2020-08-19 07:19:59,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 07:19:59,694 INFO L208 MainTranslator]: Completed translation [2020-08-19 07:19:59,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 07:19:59 WrapperNode [2020-08-19 07:19:59,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 07:19:59,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 07:19:59,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 07:19:59,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 07:19:59,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 07:19:59" (1/1) ... [2020-08-19 07:19:59,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 07:19:59" (1/1) ... [2020-08-19 07:19:59,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 07:19:59" (1/1) ... [2020-08-19 07:19:59,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 07:19:59" (1/1) ... [2020-08-19 07:19:59,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 07:19:59" (1/1) ... [2020-08-19 07:19:59,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 07:19:59" (1/1) ... [2020-08-19 07:19:59,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 07:19:59" (1/1) ... [2020-08-19 07:19:59,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 07:19:59,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 07:19:59,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 07:19:59,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 07:19:59,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 07:19:59" (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 [2020-08-19 07:19:59,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 07:19:59,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 07:19:59,895 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-08-19 07:19:59,896 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-19 07:19:59,896 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2020-08-19 07:19:59,896 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2020-08-19 07:19:59,896 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-19 07:19:59,897 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-19 07:19:59,897 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_name [2020-08-19 07:19:59,898 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 07:19:59,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-19 07:19:59,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-19 07:19:59,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-19 07:19:59,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-19 07:19:59,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-19 07:19:59,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-19 07:19:59,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-19 07:19:59,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-19 07:19:59,901 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2020-08-19 07:19:59,902 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_allocate_port [2020-08-19 07:19:59,902 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_free_port [2020-08-19 07:19:59,902 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_name [2020-08-19 07:19:59,902 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_valid [2020-08-19 07:19:59,902 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_len [2020-08-19 07:19:59,902 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_start [2020-08-19 07:19:59,902 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_valid [2020-08-19 07:19:59,903 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_len [2020-08-19 07:19:59,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_isa_probe [2020-08-19 07:19:59,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_pnp_probe [2020-08-19 07:19:59,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_init [2020-08-19 07:19:59,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_exit [2020-08-19 07:19:59,903 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 07:19:59,903 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-19 07:19:59,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2020-08-19 07:19:59,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-19 07:19:59,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2020-08-19 07:19:59,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2020-08-19 07:19:59,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2020-08-19 07:19:59,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2020-08-19 07:19:59,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __gameport_register_port [2020-08-19 07:19:59,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-19 07:19:59,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-08-19 07:19:59,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-08-19 07:19:59,905 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_phys [2020-08-19 07:19:59,905 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_unregister_port [2020-08-19 07:19:59,905 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2020-08-19 07:19:59,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-19 07:19:59,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-19 07:19:59,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_1 [2020-08-19 07:19:59,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2020-08-19 07:19:59,906 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2020-08-19 07:19:59,906 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_get_resource [2020-08-19 07:19:59,907 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_register_driver [2020-08-19 07:19:59,907 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_unregister_driver [2020-08-19 07:19:59,907 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-19 07:19:59,907 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2020-08-19 07:19:59,908 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-19 07:19:59,908 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-19 07:19:59,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 07:19:59,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-19 07:19:59,908 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-19 07:19:59,909 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-19 07:19:59,909 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-08-19 07:19:59,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 07:19:59,909 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-19 07:19:59,909 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2020-08-19 07:19:59,909 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2020-08-19 07:19:59,909 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2020-08-19 07:19:59,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 07:19:59,910 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-08-19 07:19:59,910 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-08-19 07:19:59,911 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-19 07:19:59,911 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-19 07:19:59,911 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_name [2020-08-19 07:19:59,912 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-19 07:19:59,912 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2020-08-19 07:19:59,912 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-19 07:19:59,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2020-08-19 07:19:59,913 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 07:19:59,913 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 07:19:59,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 07:19:59,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-19 07:19:59,914 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 07:19:59,914 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 07:19:59,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-19 07:19:59,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 07:19:59,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-19 07:19:59,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-19 07:19:59,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-19 07:19:59,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-19 07:19:59,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-19 07:19:59,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-19 07:19:59,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-19 07:19:59,915 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2020-08-19 07:19:59,915 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2020-08-19 07:19:59,916 INFO L130 BoogieDeclarations]: Found specification of procedure __gameport_register_port [2020-08-19 07:19:59,916 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_unregister_port [2020-08-19 07:19:59,916 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_phys [2020-08-19 07:19:59,916 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_allocate_port [2020-08-19 07:19:59,916 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_free_port [2020-08-19 07:19:59,916 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_name [2020-08-19 07:19:59,916 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_get_resource [2020-08-19 07:19:59,916 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_valid [2020-08-19 07:19:59,917 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_len [2020-08-19 07:19:59,917 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_start [2020-08-19 07:19:59,917 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_valid [2020-08-19 07:19:59,917 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_len [2020-08-19 07:19:59,917 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_register_driver [2020-08-19 07:19:59,917 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_unregister_driver [2020-08-19 07:19:59,918 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_isa_probe [2020-08-19 07:19:59,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 07:19:59,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 07:19:59,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 07:19:59,918 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_pnp_probe [2020-08-19 07:19:59,918 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_init [2020-08-19 07:19:59,919 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_exit [2020-08-19 07:19:59,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-19 07:19:59,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-19 07:19:59,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_1 [2020-08-19 07:19:59,920 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 07:19:59,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2020-08-19 07:19:59,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-19 07:19:59,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2020-08-19 07:19:59,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2020-08-19 07:19:59,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2020-08-19 07:19:59,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2020-08-19 07:19:59,925 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 07:19:59,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 07:19:59,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 07:19:59,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 07:19:59,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 07:19:59,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 07:20:00,753 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-19 07:20:01,585 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 07:20:01,585 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 07:20:01,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 07:20:01 BoogieIcfgContainer [2020-08-19 07:20:01,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 07:20:01,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 07:20:01,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 07:20:01,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 07:20:01,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 07:19:58" (1/3) ... [2020-08-19 07:20:01,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78993cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 07:20:01, skipping insertion in model container [2020-08-19 07:20:01,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 07:19:59" (2/3) ... [2020-08-19 07:20:01,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78993cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 07:20:01, skipping insertion in model container [2020-08-19 07:20:01,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 07:20:01" (3/3) ... [2020-08-19 07:20:01,599 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 [2020-08-19 07:20:01,609 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 07:20:01,618 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 07:20:01,631 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 07:20:01,656 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 07:20:01,657 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 07:20:01,657 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 07:20:01,657 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 07:20:01,657 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 07:20:01,657 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 07:20:01,657 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 07:20:01,657 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 07:20:01,684 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states. [2020-08-19 07:20:01,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-19 07:20:01,699 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 07:20:01,700 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] [2020-08-19 07:20:01,700 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 07:20:01,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 07:20:01,706 INFO L82 PathProgramCache]: Analyzing trace with hash -2083768503, now seen corresponding path program 1 times [2020-08-19 07:20:01,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 07:20:01,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814796093] [2020-08-19 07:20:01,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 07:20:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:02,607 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 07:20:02,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 07:20:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:02,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 07:20:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:02,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:02,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 07:20:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:02,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-19 07:20:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:02,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 07:20:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:02,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:02,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 07:20:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:02,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 07:20:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:02,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-19 07:20:02,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:02,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 07:20:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:02,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 07:20:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:02,874 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 07:20:02,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814796093] [2020-08-19 07:20:02,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 07:20:02,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 07:20:02,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512951907] [2020-08-19 07:20:02,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 07:20:02,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 07:20:02,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 07:20:02,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-19 07:20:02,903 INFO L87 Difference]: Start difference. First operand 348 states. Second operand 10 states. [2020-08-19 07:20:03,137 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-19 07:20:04,295 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-19 07:20:05,556 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-19 07:20:05,777 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-19 07:20:05,982 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-19 07:20:06,196 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-19 07:20:08,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 07:20:08,474 INFO L93 Difference]: Finished difference Result 815 states and 1118 transitions. [2020-08-19 07:20:08,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 07:20:08,476 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-08-19 07:20:08,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 07:20:08,495 INFO L225 Difference]: With dead ends: 815 [2020-08-19 07:20:08,495 INFO L226 Difference]: Without dead ends: 429 [2020-08-19 07:20:08,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-08-19 07:20:08,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-08-19 07:20:08,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 306. [2020-08-19 07:20:08,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-08-19 07:20:08,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 386 transitions. [2020-08-19 07:20:08,617 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 386 transitions. Word has length 91 [2020-08-19 07:20:08,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 07:20:08,618 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 386 transitions. [2020-08-19 07:20:08,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 07:20:08,618 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 386 transitions. [2020-08-19 07:20:08,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-19 07:20:08,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 07:20:08,625 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] [2020-08-19 07:20:08,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 07:20:08,625 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 07:20:08,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 07:20:08,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1314856814, now seen corresponding path program 1 times [2020-08-19 07:20:08,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 07:20:08,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474376615] [2020-08-19 07:20:08,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 07:20:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:08,992 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 07:20:08,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 07:20:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:09,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 07:20:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:09,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:09,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 07:20:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:09,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-19 07:20:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:09,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 07:20:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:09,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:09,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 07:20:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:09,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-19 07:20:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:09,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 07:20:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:09,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 07:20:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:09,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 07:20:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:09,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 07:20:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:09,136 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 07:20:09,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474376615] [2020-08-19 07:20:09,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 07:20:09,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 07:20:09,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067393064] [2020-08-19 07:20:09,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 07:20:09,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 07:20:09,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 07:20:09,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 07:20:09,140 INFO L87 Difference]: Start difference. First operand 306 states and 386 transitions. Second operand 6 states. [2020-08-19 07:20:09,300 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-19 07:20:12,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 07:20:12,233 INFO L93 Difference]: Finished difference Result 722 states and 963 transitions. [2020-08-19 07:20:12,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 07:20:12,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-08-19 07:20:12,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 07:20:12,240 INFO L225 Difference]: With dead ends: 722 [2020-08-19 07:20:12,240 INFO L226 Difference]: Without dead ends: 441 [2020-08-19 07:20:12,243 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 [2020-08-19 07:20:12,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-08-19 07:20:12,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 308. [2020-08-19 07:20:12,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-08-19 07:20:12,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 388 transitions. [2020-08-19 07:20:12,295 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 388 transitions. Word has length 97 [2020-08-19 07:20:12,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 07:20:12,296 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 388 transitions. [2020-08-19 07:20:12,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 07:20:12,296 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 388 transitions. [2020-08-19 07:20:12,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-08-19 07:20:12,299 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 07:20:12,299 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] [2020-08-19 07:20:12,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 07:20:12,300 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 07:20:12,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 07:20:12,300 INFO L82 PathProgramCache]: Analyzing trace with hash -492581383, now seen corresponding path program 1 times [2020-08-19 07:20:12,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 07:20:12,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500660750] [2020-08-19 07:20:12,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 07:20:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:12,552 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 07:20:12,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 07:20:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:12,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 07:20:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:12,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:12,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 07:20:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:12,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 07:20:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:12,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:12,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:12,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:12,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-19 07:20:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:12,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:12,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:12,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:12,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 07:20:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:12,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:12,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:12,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:12,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 07:20:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:12,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:12,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 07:20:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:12,724 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-19 07:20:12,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500660750] [2020-08-19 07:20:12,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 07:20:12,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 07:20:12,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430171532] [2020-08-19 07:20:12,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 07:20:12,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 07:20:12,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 07:20:12,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 07:20:12,727 INFO L87 Difference]: Start difference. First operand 308 states and 388 transitions. Second operand 6 states. [2020-08-19 07:20:12,906 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-19 07:20:13,209 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-08-19 07:20:13,445 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-08-19 07:20:17,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 07:20:17,048 INFO L93 Difference]: Finished difference Result 945 states and 1246 transitions. [2020-08-19 07:20:17,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 07:20:17,048 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-08-19 07:20:17,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 07:20:17,055 INFO L225 Difference]: With dead ends: 945 [2020-08-19 07:20:17,055 INFO L226 Difference]: Without dead ends: 662 [2020-08-19 07:20:17,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-19 07:20:17,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2020-08-19 07:20:17,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 489. [2020-08-19 07:20:17,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-08-19 07:20:17,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 617 transitions. [2020-08-19 07:20:17,124 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 617 transitions. Word has length 123 [2020-08-19 07:20:17,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 07:20:17,125 INFO L479 AbstractCegarLoop]: Abstraction has 489 states and 617 transitions. [2020-08-19 07:20:17,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 07:20:17,125 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 617 transitions. [2020-08-19 07:20:17,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-08-19 07:20:17,128 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 07:20:17,128 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] [2020-08-19 07:20:17,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 07:20:17,128 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 07:20:17,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 07:20:17,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1067393612, now seen corresponding path program 1 times [2020-08-19 07:20:17,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 07:20:17,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618149796] [2020-08-19 07:20:17,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 07:20:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:17,402 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 07:20:17,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 07:20:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:17,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 07:20:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:17,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:17,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 07:20:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:17,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-19 07:20:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:17,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 07:20:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:17,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:17,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 07:20:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:17,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-19 07:20:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:17,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 07:20:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:17,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 07:20:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:17,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 07:20:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:17,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 07:20:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:17,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 07:20:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:17,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 07:20:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:17,512 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-08-19 07:20:17,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618149796] [2020-08-19 07:20:17,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 07:20:17,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 07:20:17,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115251074] [2020-08-19 07:20:17,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 07:20:17,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 07:20:17,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 07:20:17,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-19 07:20:17,515 INFO L87 Difference]: Start difference. First operand 489 states and 617 transitions. Second operand 7 states. [2020-08-19 07:20:17,696 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-19 07:20:21,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 07:20:21,052 INFO L93 Difference]: Finished difference Result 1237 states and 1674 transitions. [2020-08-19 07:20:21,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 07:20:21,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-08-19 07:20:21,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 07:20:21,070 INFO L225 Difference]: With dead ends: 1237 [2020-08-19 07:20:21,071 INFO L226 Difference]: Without dead ends: 773 [2020-08-19 07:20:21,073 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 [2020-08-19 07:20:21,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-08-19 07:20:21,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 541. [2020-08-19 07:20:21,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2020-08-19 07:20:21,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 699 transitions. [2020-08-19 07:20:21,172 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 699 transitions. Word has length 110 [2020-08-19 07:20:21,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 07:20:21,173 INFO L479 AbstractCegarLoop]: Abstraction has 541 states and 699 transitions. [2020-08-19 07:20:21,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 07:20:21,173 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 699 transitions. [2020-08-19 07:20:21,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-19 07:20:21,176 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 07:20:21,176 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] [2020-08-19 07:20:21,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 07:20:21,177 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 07:20:21,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 07:20:21,177 INFO L82 PathProgramCache]: Analyzing trace with hash 790920921, now seen corresponding path program 1 times [2020-08-19 07:20:21,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 07:20:21,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328821696] [2020-08-19 07:20:21,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 07:20:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:21,424 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 07:20:21,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 07:20:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:21,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 07:20:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:21,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:21,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 07:20:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:21,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 07:20:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:21,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:21,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 07:20:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:21,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:21,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:21,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:21,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-19 07:20:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:21,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:21,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:21,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:21,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 07:20:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:21,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:21,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:21,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:21,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-19 07:20:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:21,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-19 07:20:21,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328821696] [2020-08-19 07:20:21,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 07:20:21,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 07:20:21,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280919284] [2020-08-19 07:20:21,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 07:20:21,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 07:20:21,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 07:20:21,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-19 07:20:21,633 INFO L87 Difference]: Start difference. First operand 541 states and 699 transitions. Second operand 9 states. [2020-08-19 07:20:21,802 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-19 07:20:22,512 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-08-19 07:20:24,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 07:20:24,693 INFO L93 Difference]: Finished difference Result 1246 states and 1663 transitions. [2020-08-19 07:20:24,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 07:20:24,694 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2020-08-19 07:20:24,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 07:20:24,701 INFO L225 Difference]: With dead ends: 1246 [2020-08-19 07:20:24,701 INFO L226 Difference]: Without dead ends: 708 [2020-08-19 07:20:24,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-08-19 07:20:24,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-08-19 07:20:24,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 538. [2020-08-19 07:20:24,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-08-19 07:20:24,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 692 transitions. [2020-08-19 07:20:24,772 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 692 transitions. Word has length 137 [2020-08-19 07:20:24,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 07:20:24,772 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 692 transitions. [2020-08-19 07:20:24,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 07:20:24,772 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 692 transitions. [2020-08-19 07:20:24,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-19 07:20:24,775 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 07:20:24,777 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] [2020-08-19 07:20:24,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 07:20:24,778 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 07:20:24,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 07:20:24,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1536881969, now seen corresponding path program 1 times [2020-08-19 07:20:24,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 07:20:24,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786219356] [2020-08-19 07:20:24,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 07:20:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:25,134 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 07:20:25,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 07:20:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:25,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 07:20:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:25,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:25,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 07:20:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:25,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 07:20:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:25,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:25,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 07:20:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:25,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-19 07:20:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:25,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:25,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:25,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:25,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 07:20:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:25,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:25,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:25,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:25,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 07:20:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:25,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:25,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:25,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:25,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-19 07:20:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:25,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:25,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 07:20:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:25,556 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-19 07:20:25,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786219356] [2020-08-19 07:20:25,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 07:20:25,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 07:20:25,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80508861] [2020-08-19 07:20:25,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 07:20:25,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 07:20:25,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 07:20:25,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-19 07:20:25,560 INFO L87 Difference]: Start difference. First operand 538 states and 692 transitions. Second operand 10 states. [2020-08-19 07:20:25,850 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-19 07:20:26,687 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-19 07:20:26,891 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-19 07:20:29,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 07:20:29,755 INFO L93 Difference]: Finished difference Result 1233 states and 1636 transitions. [2020-08-19 07:20:29,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 07:20:29,755 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-08-19 07:20:29,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 07:20:29,761 INFO L225 Difference]: With dead ends: 1233 [2020-08-19 07:20:29,761 INFO L226 Difference]: Without dead ends: 702 [2020-08-19 07:20:29,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-08-19 07:20:29,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2020-08-19 07:20:29,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 538. [2020-08-19 07:20:29,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-08-19 07:20:29,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 690 transitions. [2020-08-19 07:20:29,821 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 690 transitions. Word has length 152 [2020-08-19 07:20:29,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 07:20:29,824 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 690 transitions. [2020-08-19 07:20:29,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 07:20:29,824 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 690 transitions. [2020-08-19 07:20:29,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-19 07:20:29,828 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 07:20:29,828 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] [2020-08-19 07:20:29,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 07:20:29,829 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 07:20:29,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 07:20:29,829 INFO L82 PathProgramCache]: Analyzing trace with hash -436283409, now seen corresponding path program 1 times [2020-08-19 07:20:29,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 07:20:29,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879224792] [2020-08-19 07:20:29,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 07:20:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:30,175 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 07:20:30,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 07:20:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:30,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 07:20:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:30,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:30,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 07:20:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:30,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 07:20:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:30,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:30,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 07:20:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:30,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-19 07:20:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:30,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:30,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:30,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:30,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 07:20:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:30,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:30,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:30,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:30,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 07:20:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:30,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:30,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:30,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:30,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-19 07:20:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:30,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:30,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 07:20:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:30,738 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-08-19 07:20:30,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879224792] [2020-08-19 07:20:30,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 07:20:30,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 07:20:30,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959589170] [2020-08-19 07:20:30,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 07:20:30,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 07:20:30,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 07:20:30,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-08-19 07:20:30,742 INFO L87 Difference]: Start difference. First operand 538 states and 690 transitions. Second operand 13 states. [2020-08-19 07:20:31,035 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-19 07:20:31,859 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-19 07:20:32,333 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-19 07:20:32,541 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-19 07:20:32,786 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-19 07:20:33,008 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-19 07:20:33,231 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-08-19 07:20:33,469 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-08-19 07:20:35,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 07:20:35,491 INFO L93 Difference]: Finished difference Result 1217 states and 1615 transitions. [2020-08-19 07:20:35,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 07:20:35,493 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-19 07:20:35,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 07:20:35,499 INFO L225 Difference]: With dead ends: 1217 [2020-08-19 07:20:35,499 INFO L226 Difference]: Without dead ends: 704 [2020-08-19 07:20:35,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-08-19 07:20:35,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-08-19 07:20:35,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 545. [2020-08-19 07:20:35,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-08-19 07:20:35,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 702 transitions. [2020-08-19 07:20:35,558 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 702 transitions. Word has length 152 [2020-08-19 07:20:35,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 07:20:35,559 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 702 transitions. [2020-08-19 07:20:35,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 07:20:35,559 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 702 transitions. [2020-08-19 07:20:35,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-08-19 07:20:35,562 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 07:20:35,562 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 07:20:35,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 07:20:35,563 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 07:20:35,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 07:20:35,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1538409515, now seen corresponding path program 1 times [2020-08-19 07:20:35,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 07:20:35,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326156920] [2020-08-19 07:20:35,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 07:20:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:35,798 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 07:20:35,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 07:20:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:35,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 07:20:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:35,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:35,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 07:20:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:35,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 07:20:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:35,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:35,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 07:20:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:35,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-19 07:20:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:35,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:35,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:35,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:35,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:36,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 07:20:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:36,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:36,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:36,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 07:20:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:36,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 07:20:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:36,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-19 07:20:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:36,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:36,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:36,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 07:20:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:36,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 07:20:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:36,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-19 07:20:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:36,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-08-19 07:20:36,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326156920] [2020-08-19 07:20:36,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 07:20:36,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 07:20:36,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989549767] [2020-08-19 07:20:36,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 07:20:36,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 07:20:36,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 07:20:36,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-19 07:20:36,186 INFO L87 Difference]: Start difference. First operand 545 states and 702 transitions. Second operand 11 states. [2020-08-19 07:20:36,356 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-19 07:20:37,585 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-08-19 07:20:37,801 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-19 07:20:38,030 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-19 07:20:38,239 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-19 07:20:38,442 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-19 07:20:40,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 07:20:40,382 INFO L93 Difference]: Finished difference Result 1168 states and 1528 transitions. [2020-08-19 07:20:40,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 07:20:40,383 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 158 [2020-08-19 07:20:40,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 07:20:40,388 INFO L225 Difference]: With dead ends: 1168 [2020-08-19 07:20:40,388 INFO L226 Difference]: Without dead ends: 648 [2020-08-19 07:20:40,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-08-19 07:20:40,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-08-19 07:20:40,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 550. [2020-08-19 07:20:40,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-08-19 07:20:40,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 707 transitions. [2020-08-19 07:20:40,446 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 707 transitions. Word has length 158 [2020-08-19 07:20:40,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 07:20:40,446 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 707 transitions. [2020-08-19 07:20:40,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 07:20:40,446 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 707 transitions. [2020-08-19 07:20:40,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-08-19 07:20:40,449 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 07:20:40,449 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 07:20:40,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 07:20:40,450 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 07:20:40,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 07:20:40,450 INFO L82 PathProgramCache]: Analyzing trace with hash -432995670, now seen corresponding path program 2 times [2020-08-19 07:20:40,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 07:20:40,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896869003] [2020-08-19 07:20:40,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 07:20:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:40,783 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 07:20:40,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 07:20:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:40,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 07:20:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:40,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:40,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 07:20:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:40,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 07:20:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:40,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:40,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 07:20:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:40,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-19 07:20:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:40,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:40,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:40,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 07:20:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:40,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 07:20:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:40,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 07:20:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:40,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:40,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:40,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:40,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-19 07:20:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:40,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:40,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:40,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:40,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-19 07:20:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:40,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:40,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 07:20:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:41,029 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-08-19 07:20:41,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896869003] [2020-08-19 07:20:41,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 07:20:41,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 07:20:41,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880008576] [2020-08-19 07:20:41,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 07:20:41,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 07:20:41,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 07:20:41,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-19 07:20:41,033 INFO L87 Difference]: Start difference. First operand 550 states and 707 transitions. Second operand 10 states. [2020-08-19 07:20:41,257 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-19 07:20:41,981 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-08-19 07:20:42,874 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-19 07:20:43,831 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-19 07:20:44,067 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-19 07:20:45,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 07:20:45,520 INFO L93 Difference]: Finished difference Result 1271 states and 1638 transitions. [2020-08-19 07:20:45,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 07:20:45,521 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 158 [2020-08-19 07:20:45,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 07:20:45,525 INFO L225 Difference]: With dead ends: 1271 [2020-08-19 07:20:45,526 INFO L226 Difference]: Without dead ends: 746 [2020-08-19 07:20:45,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-08-19 07:20:45,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2020-08-19 07:20:45,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 430. [2020-08-19 07:20:45,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-08-19 07:20:45,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 531 transitions. [2020-08-19 07:20:45,574 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 531 transitions. Word has length 158 [2020-08-19 07:20:45,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 07:20:45,574 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 531 transitions. [2020-08-19 07:20:45,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 07:20:45,574 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 531 transitions. [2020-08-19 07:20:45,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-19 07:20:45,577 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 07:20:45,577 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] [2020-08-19 07:20:45,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 07:20:45,577 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 07:20:45,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 07:20:45,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1391356121, now seen corresponding path program 1 times [2020-08-19 07:20:45,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 07:20:45,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299415533] [2020-08-19 07:20:45,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 07:20:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:45,884 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 07:20:45,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 07:20:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:45,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 07:20:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:45,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:45,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 07:20:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:45,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-19 07:20:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:45,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 07:20:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:45,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:45,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 07:20:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:45,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-19 07:20:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:45,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 07:20:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:45,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 07:20:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:45,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 07:20:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:45,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 07:20:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:45,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 07:20:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:45,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 07:20:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:45,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 07:20:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:45,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 07:20:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:46,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 07:20:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:46,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-19 07:20:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:46,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:46,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-19 07:20:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:46,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:46,059 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-08-19 07:20:46,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299415533] [2020-08-19 07:20:46,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 07:20:46,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 07:20:46,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666800559] [2020-08-19 07:20:46,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 07:20:46,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 07:20:46,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 07:20:46,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-19 07:20:46,061 INFO L87 Difference]: Start difference. First operand 430 states and 531 transitions. Second operand 8 states. [2020-08-19 07:20:46,231 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-19 07:20:49,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 07:20:49,586 INFO L93 Difference]: Finished difference Result 980 states and 1265 transitions. [2020-08-19 07:20:49,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 07:20:49,587 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 151 [2020-08-19 07:20:49,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 07:20:49,591 INFO L225 Difference]: With dead ends: 980 [2020-08-19 07:20:49,591 INFO L226 Difference]: Without dead ends: 592 [2020-08-19 07:20:49,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-19 07:20:49,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-08-19 07:20:49,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 453. [2020-08-19 07:20:49,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-08-19 07:20:49,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 568 transitions. [2020-08-19 07:20:49,656 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 568 transitions. Word has length 151 [2020-08-19 07:20:49,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 07:20:49,657 INFO L479 AbstractCegarLoop]: Abstraction has 453 states and 568 transitions. [2020-08-19 07:20:49,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 07:20:49,657 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 568 transitions. [2020-08-19 07:20:49,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-19 07:20:49,660 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 07:20:49,660 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] [2020-08-19 07:20:49,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 07:20:49,660 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 07:20:49,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 07:20:49,661 INFO L82 PathProgramCache]: Analyzing trace with hash -642852378, now seen corresponding path program 2 times [2020-08-19 07:20:49,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 07:20:49,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691825287] [2020-08-19 07:20:49,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 07:20:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:50,012 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 07:20:50,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 07:20:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:50,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 07:20:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:50,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:50,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 07:20:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:50,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 07:20:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:50,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:50,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 07:20:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:50,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-19 07:20:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:50,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:50,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:50,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 07:20:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:50,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 07:20:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:50,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 07:20:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:50,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:50,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:50,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:50,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 07:20:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:50,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 07:20:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:50,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 07:20:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:50,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:50,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:50,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 07:20:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:50,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 07:20:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:50,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-19 07:20:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:50,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:50,291 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-19 07:20:50,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691825287] [2020-08-19 07:20:50,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 07:20:50,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 07:20:50,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16262104] [2020-08-19 07:20:50,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 07:20:50,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 07:20:50,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 07:20:50,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-19 07:20:50,293 INFO L87 Difference]: Start difference. First operand 453 states and 568 transitions. Second operand 7 states. [2020-08-19 07:20:50,573 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-19 07:20:51,088 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-08-19 07:20:51,443 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-08-19 07:20:53,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 07:20:53,902 INFO L93 Difference]: Finished difference Result 553 states and 710 transitions. [2020-08-19 07:20:53,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 07:20:53,902 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-08-19 07:20:53,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 07:20:53,903 INFO L225 Difference]: With dead ends: 553 [2020-08-19 07:20:53,903 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 07:20:53,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-19 07:20:53,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 07:20:53,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 07:20:53,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 07:20:53,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 07:20:53,907 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 164 [2020-08-19 07:20:53,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 07:20:53,907 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 07:20:53,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 07:20:53,907 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 07:20:53,907 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 07:20:53,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 07:20:53,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.