/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:03:10,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:03:10,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:03:10,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:03:10,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:03:10,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:03:10,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:03:10,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:03:10,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:03:10,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:03:10,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:03:10,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:03:10,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:03:10,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:03:10,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:03:10,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:03:10,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:03:10,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:03:10,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:03:10,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:03:10,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:03:10,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:03:10,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:03:10,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:03:10,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:03:10,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:03:10,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:03:10,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:03:10,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:03:10,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:03:10,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:03:10,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:03:10,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:03:10,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:03:10,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:03:10,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:03:10,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:03:10,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:03:10,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:03:10,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:03:10,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:03:10,965 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-21 17:03:11,003 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:03:11,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:03:11,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:03:11,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:03:11,005 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:03:11,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:03:11,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:03:11,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:03:11,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:03:11,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:03:11,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:03:11,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:03:11,008 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:03:11,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:03:11,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:03:11,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:03:11,010 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:03:11,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:03:11,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:03:11,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:03:11,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:03:11,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:03:11,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:03:11,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:03:11,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:03:11,012 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:03:11,012 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-21 17:03:11,013 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 17:03:11,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:03:11,333 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:03:11,339 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:03:11,340 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:03:11,341 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:03:11,342 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-21 17:03:11,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28ab58236/0015e351764541de8ceedd356a70087b/FLAG8713214b0 [2020-08-21 17:03:12,029 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:03:12,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-21 17:03:12,063 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28ab58236/0015e351764541de8ceedd356a70087b/FLAG8713214b0 [2020-08-21 17:03:12,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28ab58236/0015e351764541de8ceedd356a70087b [2020-08-21 17:03:12,262 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:03:12,264 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:03:12,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:03:12,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:03:12,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:03:12,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:03:12" (1/1) ... [2020-08-21 17:03:12,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b192de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:03:12, skipping insertion in model container [2020-08-21 17:03:12,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:03:12" (1/1) ... [2020-08-21 17:03:12,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:03:12,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:03:12,782 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1323] [2020-08-21 17:03:12,782 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1324-1325] [2020-08-21 17:03:13,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:03:13,175 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:03:13,285 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1323] [2020-08-21 17:03:13,285 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1324-1325] [2020-08-21 17:03:13,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:03:13,423 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:03:13,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:03:13 WrapperNode [2020-08-21 17:03:13,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:03:13,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:03:13,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:03:13,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:03:13,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:03:13" (1/1) ... [2020-08-21 17:03:13,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:03:13" (1/1) ... [2020-08-21 17:03:13,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:03:13" (1/1) ... [2020-08-21 17:03:13,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:03:13" (1/1) ... [2020-08-21 17:03:13,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:03:13" (1/1) ... [2020-08-21 17:03:13,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:03:13" (1/1) ... [2020-08-21 17:03:13,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:03:13" (1/1) ... [2020-08-21 17:03:13,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:03:13,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:03:13,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:03:13,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:03:13,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:03:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:03:13,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:03:13,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:03:13,670 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-08-21 17:03:13,670 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-21 17:03:13,670 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2020-08-21 17:03:13,671 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2020-08-21 17:03:13,671 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-21 17:03:13,671 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-21 17:03:13,672 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_name [2020-08-21 17:03:13,672 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 17:03:13,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-21 17:03:13,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-21 17:03:13,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-21 17:03:13,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-21 17:03:13,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-21 17:03:13,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-21 17:03:13,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-21 17:03:13,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-21 17:03:13,674 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2020-08-21 17:03:13,674 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_allocate_port [2020-08-21 17:03:13,675 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_free_port [2020-08-21 17:03:13,675 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_name [2020-08-21 17:03:13,675 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_valid [2020-08-21 17:03:13,675 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_len [2020-08-21 17:03:13,675 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_start [2020-08-21 17:03:13,676 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_valid [2020-08-21 17:03:13,676 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_len [2020-08-21 17:03:13,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_isa_probe [2020-08-21 17:03:13,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_pnp_probe [2020-08-21 17:03:13,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_init [2020-08-21 17:03:13,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_exit [2020-08-21 17:03:13,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:03:13,677 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-21 17:03:13,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2020-08-21 17:03:13,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-21 17:03:13,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2020-08-21 17:03:13,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2020-08-21 17:03:13,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2020-08-21 17:03:13,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2020-08-21 17:03:13,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __gameport_register_port [2020-08-21 17:03:13,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-21 17:03:13,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-08-21 17:03:13,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-08-21 17:03:13,679 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_phys [2020-08-21 17:03:13,679 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_unregister_port [2020-08-21 17:03:13,679 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2020-08-21 17:03:13,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-21 17:03:13,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-21 17:03:13,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_1 [2020-08-21 17:03:13,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2020-08-21 17:03:13,680 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2020-08-21 17:03:13,680 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_get_resource [2020-08-21 17:03:13,680 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_register_driver [2020-08-21 17:03:13,681 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_unregister_driver [2020-08-21 17:03:13,681 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-21 17:03:13,681 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2020-08-21 17:03:13,681 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-21 17:03:13,681 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-21 17:03:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:03:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-21 17:03:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-21 17:03:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-21 17:03:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-08-21 17:03:13,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 17:03:13,683 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-21 17:03:13,683 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2020-08-21 17:03:13,683 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2020-08-21 17:03:13,683 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2020-08-21 17:03:13,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:03:13,684 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-08-21 17:03:13,684 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-08-21 17:03:13,684 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-21 17:03:13,684 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-21 17:03:13,684 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_name [2020-08-21 17:03:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-21 17:03:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2020-08-21 17:03:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-21 17:03:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2020-08-21 17:03:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 17:03:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 17:03:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:03:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-21 17:03:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 17:03:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 17:03:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-21 17:03:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 17:03:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-21 17:03:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-21 17:03:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-21 17:03:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-21 17:03:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-21 17:03:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-21 17:03:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-21 17:03:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2020-08-21 17:03:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2020-08-21 17:03:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure __gameport_register_port [2020-08-21 17:03:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_unregister_port [2020-08-21 17:03:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_phys [2020-08-21 17:03:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_allocate_port [2020-08-21 17:03:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_free_port [2020-08-21 17:03:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_name [2020-08-21 17:03:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_get_resource [2020-08-21 17:03:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_valid [2020-08-21 17:03:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_len [2020-08-21 17:03:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_start [2020-08-21 17:03:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_valid [2020-08-21 17:03:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_len [2020-08-21 17:03:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_register_driver [2020-08-21 17:03:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_unregister_driver [2020-08-21 17:03:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_isa_probe [2020-08-21 17:03:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:03:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:03:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 17:03:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_pnp_probe [2020-08-21 17:03:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_init [2020-08-21 17:03:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_exit [2020-08-21 17:03:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-21 17:03:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-21 17:03:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_1 [2020-08-21 17:03:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:03:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2020-08-21 17:03:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-21 17:03:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2020-08-21 17:03:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2020-08-21 17:03:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2020-08-21 17:03:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2020-08-21 17:03:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 17:03:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:03:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:03:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 17:03:13,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 17:03:13,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:03:14,264 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-21 17:03:14,914 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:03:14,914 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 17:03:14,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:03:14 BoogieIcfgContainer [2020-08-21 17:03:14,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:03:14,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:03:14,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:03:14,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:03:14,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:03:12" (1/3) ... [2020-08-21 17:03:14,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b6a43e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:03:14, skipping insertion in model container [2020-08-21 17:03:14,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:03:13" (2/3) ... [2020-08-21 17:03:14,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b6a43e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:03:14, skipping insertion in model container [2020-08-21 17:03:14,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:03:14" (3/3) ... [2020-08-21 17:03:14,929 INFO L109 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-21 17:03:14,940 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:03:14,948 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:03:14,963 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:03:14,990 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:03:14,990 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:03:14,990 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:03:14,990 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:03:14,990 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:03:14,991 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:03:14,991 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:03:14,991 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:03:15,018 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states. [2020-08-21 17:03:15,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-21 17:03:15,033 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:03:15,034 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:03:15,035 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:03:15,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:03:15,041 INFO L82 PathProgramCache]: Analyzing trace with hash -2083768503, now seen corresponding path program 1 times [2020-08-21 17:03:15,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:03:15,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352752119] [2020-08-21 17:03:15,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:03:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:15,753 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 17:03:15,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:03:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:15,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:03:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:15,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:15,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:03:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:15,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 17:03:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:15,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 17:03:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:15,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:15,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 17:03:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:15,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 17:03:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:15,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-21 17:03:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:15,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 17:03:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:15,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 17:03:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:15,981 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 17:03:15,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352752119] [2020-08-21 17:03:15,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:03:15,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:03:15,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092606055] [2020-08-21 17:03:15,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:03:15,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:03:16,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:03:16,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:03:16,009 INFO L87 Difference]: Start difference. First operand 348 states. Second operand 10 states. [2020-08-21 17:03:16,219 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-21 17:03:17,204 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-21 17:03:18,292 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-21 17:03:18,438 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-21 17:03:18,629 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-21 17:03:18,827 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-21 17:03:20,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:03:20,817 INFO L93 Difference]: Finished difference Result 815 states and 1118 transitions. [2020-08-21 17:03:20,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 17:03:20,819 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-08-21 17:03:20,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:03:20,838 INFO L225 Difference]: With dead ends: 815 [2020-08-21 17:03:20,838 INFO L226 Difference]: Without dead ends: 429 [2020-08-21 17:03:20,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-08-21 17:03:20,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-08-21 17:03:20,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 306. [2020-08-21 17:03:20,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-08-21 17:03:20,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 386 transitions. [2020-08-21 17:03:20,958 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 386 transitions. Word has length 91 [2020-08-21 17:03:20,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:03:20,959 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 386 transitions. [2020-08-21 17:03:20,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:03:20,959 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 386 transitions. [2020-08-21 17:03:20,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 17:03:20,965 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:03:20,965 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:03:20,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:03:20,966 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:03:20,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:03:20,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1314856814, now seen corresponding path program 1 times [2020-08-21 17:03:20,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:03:20,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101257069] [2020-08-21 17:03:20,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:03:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:21,247 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 17:03:21,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:03:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:21,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:03:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:21,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:21,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:03:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:21,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 17:03:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:21,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 17:03:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:21,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:21,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:03:21,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:21,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 17:03:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:21,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 17:03:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:21,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 17:03:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:21,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 17:03:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:21,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 17:03:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:21,362 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 17:03:21,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101257069] [2020-08-21 17:03:21,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:03:21,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 17:03:21,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969543525] [2020-08-21 17:03:21,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 17:03:21,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:03:21,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 17:03:21,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:03:21,367 INFO L87 Difference]: Start difference. First operand 306 states and 386 transitions. Second operand 6 states. [2020-08-21 17:03:21,495 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-21 17:03:24,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:03:24,176 INFO L93 Difference]: Finished difference Result 722 states and 963 transitions. [2020-08-21 17:03:24,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 17:03:24,184 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-08-21 17:03:24,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:03:24,195 INFO L225 Difference]: With dead ends: 722 [2020-08-21 17:03:24,195 INFO L226 Difference]: Without dead ends: 441 [2020-08-21 17:03:24,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:03:24,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-08-21 17:03:24,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 308. [2020-08-21 17:03:24,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-08-21 17:03:24,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 388 transitions. [2020-08-21 17:03:24,290 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 388 transitions. Word has length 97 [2020-08-21 17:03:24,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:03:24,291 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 388 transitions. [2020-08-21 17:03:24,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 17:03:24,291 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 388 transitions. [2020-08-21 17:03:24,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-08-21 17:03:24,301 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:03:24,302 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:03:24,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:03:24,305 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:03:24,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:03:24,306 INFO L82 PathProgramCache]: Analyzing trace with hash -492581383, now seen corresponding path program 1 times [2020-08-21 17:03:24,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:03:24,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182629188] [2020-08-21 17:03:24,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:03:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:24,552 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 17:03:24,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:03:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:24,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:03:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:24,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:24,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:03:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:24,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 17:03:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:24,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:24,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:24,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:24,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 17:03:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:24,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:24,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:24,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:24,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 17:03:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:24,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:24,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:24,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:24,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 17:03:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:24,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:24,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:24,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:03:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-21 17:03:24,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182629188] [2020-08-21 17:03:24,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:03:24,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 17:03:24,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301387554] [2020-08-21 17:03:24,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 17:03:24,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:03:24,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 17:03:24,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:03:24,771 INFO L87 Difference]: Start difference. First operand 308 states and 388 transitions. Second operand 6 states. [2020-08-21 17:03:24,905 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-21 17:03:25,160 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-08-21 17:03:25,322 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-08-21 17:03:28,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:03:28,542 INFO L93 Difference]: Finished difference Result 945 states and 1246 transitions. [2020-08-21 17:03:28,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 17:03:28,543 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-08-21 17:03:28,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:03:28,550 INFO L225 Difference]: With dead ends: 945 [2020-08-21 17:03:28,550 INFO L226 Difference]: Without dead ends: 662 [2020-08-21 17:03:28,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-21 17:03:28,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2020-08-21 17:03:28,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 489. [2020-08-21 17:03:28,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-08-21 17:03:28,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 617 transitions. [2020-08-21 17:03:28,664 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 617 transitions. Word has length 123 [2020-08-21 17:03:28,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:03:28,667 INFO L479 AbstractCegarLoop]: Abstraction has 489 states and 617 transitions. [2020-08-21 17:03:28,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 17:03:28,667 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 617 transitions. [2020-08-21 17:03:28,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-08-21 17:03:28,672 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:03:28,672 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:03:28,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:03:28,672 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:03:28,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:03:28,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1067393612, now seen corresponding path program 1 times [2020-08-21 17:03:28,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:03:28,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255410003] [2020-08-21 17:03:28,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:03:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:28,924 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 17:03:28,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:03:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:28,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:03:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:28,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:28,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:03:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:28,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 17:03:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:28,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 17:03:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:29,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:29,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:03:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:29,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 17:03:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:29,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 17:03:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:29,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 17:03:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:29,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 17:03:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:29,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 17:03:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:29,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 17:03:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:29,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 17:03:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:29,044 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-08-21 17:03:29,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255410003] [2020-08-21 17:03:29,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:03:29,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 17:03:29,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901451830] [2020-08-21 17:03:29,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 17:03:29,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:03:29,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 17:03:29,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:03:29,047 INFO L87 Difference]: Start difference. First operand 489 states and 617 transitions. Second operand 7 states. [2020-08-21 17:03:29,182 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-21 17:03:32,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:03:32,069 INFO L93 Difference]: Finished difference Result 1237 states and 1674 transitions. [2020-08-21 17:03:32,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 17:03:32,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-08-21 17:03:32,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:03:32,080 INFO L225 Difference]: With dead ends: 1237 [2020-08-21 17:03:32,080 INFO L226 Difference]: Without dead ends: 773 [2020-08-21 17:03:32,084 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 [2020-08-21 17:03:32,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-08-21 17:03:32,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 541. [2020-08-21 17:03:32,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2020-08-21 17:03:32,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 699 transitions. [2020-08-21 17:03:32,167 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 699 transitions. Word has length 110 [2020-08-21 17:03:32,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:03:32,167 INFO L479 AbstractCegarLoop]: Abstraction has 541 states and 699 transitions. [2020-08-21 17:03:32,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 17:03:32,167 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 699 transitions. [2020-08-21 17:03:32,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-21 17:03:32,173 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:03:32,173 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:03:32,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:03:32,174 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:03:32,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:03:32,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1281815870, now seen corresponding path program 1 times [2020-08-21 17:03:32,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:03:32,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905930711] [2020-08-21 17:03:32,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:03:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:32,540 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 17:03:32,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:03:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:32,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:03:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:32,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:32,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:03:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:32,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 17:03:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:32,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:32,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 17:03:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:32,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:32,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:32,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:32,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 17:03:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:32,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:32,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:32,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:32,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 17:03:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:32,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:32,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:32,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:32,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 17:03:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:32,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:32,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:03:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:32,805 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-21 17:03:32,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905930711] [2020-08-21 17:03:32,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:03:32,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:03:32,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36974192] [2020-08-21 17:03:32,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:03:32,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:03:32,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:03:32,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:03:32,812 INFO L87 Difference]: Start difference. First operand 541 states and 699 transitions. Second operand 9 states. [2020-08-21 17:03:32,966 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-21 17:03:33,596 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-08-21 17:03:36,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:03:36,236 INFO L93 Difference]: Finished difference Result 1246 states and 1663 transitions. [2020-08-21 17:03:36,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 17:03:36,237 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 143 [2020-08-21 17:03:36,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:03:36,248 INFO L225 Difference]: With dead ends: 1246 [2020-08-21 17:03:36,248 INFO L226 Difference]: Without dead ends: 708 [2020-08-21 17:03:36,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-08-21 17:03:36,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-08-21 17:03:36,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 538. [2020-08-21 17:03:36,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-08-21 17:03:36,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 692 transitions. [2020-08-21 17:03:36,312 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 692 transitions. Word has length 143 [2020-08-21 17:03:36,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:03:36,313 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 692 transitions. [2020-08-21 17:03:36,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:03:36,313 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 692 transitions. [2020-08-21 17:03:36,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 17:03:36,317 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:03:36,317 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:03:36,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:03:36,318 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:03:36,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:03:36,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1536881969, now seen corresponding path program 1 times [2020-08-21 17:03:36,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:03:36,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917202085] [2020-08-21 17:03:36,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:03:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:36,562 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 17:03:36,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:03:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:36,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:03:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:36,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:36,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:03:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:36,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 17:03:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:36,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:36,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:03:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:36,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 17:03:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:36,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:36,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:36,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:36,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 17:03:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:36,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:36,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:36,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:36,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 17:03:36,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:36,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:36,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:36,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:36,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-21 17:03:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:36,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:36,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:03:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:36,797 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-21 17:03:36,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917202085] [2020-08-21 17:03:36,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:03:36,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:03:36,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029663754] [2020-08-21 17:03:36,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:03:36,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:03:36,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:03:36,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:03:36,800 INFO L87 Difference]: Start difference. First operand 538 states and 692 transitions. Second operand 10 states. [2020-08-21 17:03:36,980 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-21 17:03:37,694 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 17:03:37,871 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 17:03:40,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:03:40,376 INFO L93 Difference]: Finished difference Result 1233 states and 1636 transitions. [2020-08-21 17:03:40,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 17:03:40,377 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-08-21 17:03:40,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:03:40,382 INFO L225 Difference]: With dead ends: 1233 [2020-08-21 17:03:40,382 INFO L226 Difference]: Without dead ends: 702 [2020-08-21 17:03:40,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-08-21 17:03:40,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2020-08-21 17:03:40,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 538. [2020-08-21 17:03:40,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-08-21 17:03:40,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 690 transitions. [2020-08-21 17:03:40,437 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 690 transitions. Word has length 152 [2020-08-21 17:03:40,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:03:40,438 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 690 transitions. [2020-08-21 17:03:40,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:03:40,438 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 690 transitions. [2020-08-21 17:03:40,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-21 17:03:40,441 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:03:40,442 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:03:40,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 17:03:40,442 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:03:40,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:03:40,443 INFO L82 PathProgramCache]: Analyzing trace with hash -968590774, now seen corresponding path program 1 times [2020-08-21 17:03:40,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:03:40,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888674231] [2020-08-21 17:03:40,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:03:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:40,715 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 17:03:40,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:03:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:40,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:03:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:40,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:40,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:03:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:40,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 17:03:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:40,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:40,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:03:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:40,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 17:03:40,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:40,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:40,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:40,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:40,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 17:03:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:40,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:40,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:40,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:41,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 17:03:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:41,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:41,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:41,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:41,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-21 17:03:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:41,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:41,074 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-08-21 17:03:41,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888674231] [2020-08-21 17:03:41,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:03:41,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 17:03:41,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532879114] [2020-08-21 17:03:41,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 17:03:41,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:03:41,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 17:03:41,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-08-21 17:03:41,077 INFO L87 Difference]: Start difference. First operand 538 states and 690 transitions. Second operand 13 states. [2020-08-21 17:03:41,293 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-21 17:03:42,391 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 17:03:42,893 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 17:03:43,118 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 17:03:43,299 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 17:03:43,479 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 17:03:43,656 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-08-21 17:03:43,853 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-08-21 17:03:45,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:03:45,583 INFO L93 Difference]: Finished difference Result 1217 states and 1615 transitions. [2020-08-21 17:03:45,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 17:03:45,584 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 146 [2020-08-21 17:03:45,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:03:45,590 INFO L225 Difference]: With dead ends: 1217 [2020-08-21 17:03:45,590 INFO L226 Difference]: Without dead ends: 704 [2020-08-21 17:03:45,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-08-21 17:03:45,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-08-21 17:03:45,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 545. [2020-08-21 17:03:45,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-08-21 17:03:45,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 702 transitions. [2020-08-21 17:03:45,648 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 702 transitions. Word has length 146 [2020-08-21 17:03:45,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:03:45,648 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 702 transitions. [2020-08-21 17:03:45,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 17:03:45,648 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 702 transitions. [2020-08-21 17:03:45,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-08-21 17:03:45,651 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:03:45,651 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] [2020-08-21 17:03:45,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 17:03:45,652 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:03:45,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:03:45,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1538409515, now seen corresponding path program 1 times [2020-08-21 17:03:45,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:03:45,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126743755] [2020-08-21 17:03:45,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:03:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:45,857 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 17:03:45,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:03:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:45,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:03:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:45,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:45,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:03:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:45,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 17:03:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:45,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:45,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:03:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:45,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 17:03:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:45,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:45,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:45,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:46,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 17:03:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:46,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:46,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:46,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:03:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:46,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:03:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:46,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-21 17:03:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:46,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:46,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:46,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:03:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:46,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:03:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:46,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-21 17:03:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:46,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:46,113 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-08-21 17:03:46,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126743755] [2020-08-21 17:03:46,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:03:46,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 17:03:46,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398227123] [2020-08-21 17:03:46,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 17:03:46,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:03:46,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 17:03:46,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-21 17:03:46,118 INFO L87 Difference]: Start difference. First operand 545 states and 702 transitions. Second operand 11 states. [2020-08-21 17:03:46,279 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-21 17:03:47,409 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-08-21 17:03:47,603 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 17:03:47,791 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 17:03:47,984 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 17:03:48,140 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 17:03:49,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:03:49,738 INFO L93 Difference]: Finished difference Result 1168 states and 1528 transitions. [2020-08-21 17:03:49,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 17:03:49,740 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 158 [2020-08-21 17:03:49,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:03:49,744 INFO L225 Difference]: With dead ends: 1168 [2020-08-21 17:03:49,745 INFO L226 Difference]: Without dead ends: 648 [2020-08-21 17:03:49,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-08-21 17:03:49,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-08-21 17:03:49,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 550. [2020-08-21 17:03:49,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-08-21 17:03:49,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 707 transitions. [2020-08-21 17:03:49,798 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 707 transitions. Word has length 158 [2020-08-21 17:03:49,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:03:49,798 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 707 transitions. [2020-08-21 17:03:49,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 17:03:49,799 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 707 transitions. [2020-08-21 17:03:49,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-08-21 17:03:49,801 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:03:49,801 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] [2020-08-21 17:03:49,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 17:03:49,802 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:03:49,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:03:49,802 INFO L82 PathProgramCache]: Analyzing trace with hash -432995670, now seen corresponding path program 1 times [2020-08-21 17:03:49,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:03:49,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352877183] [2020-08-21 17:03:49,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:03:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:50,048 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 17:03:50,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:03:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:50,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:03:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:50,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:50,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:03:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:50,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 17:03:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:50,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:50,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:03:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:50,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 17:03:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:50,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:50,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:50,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:03:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:50,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:03:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:50,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 17:03:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:50,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:50,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:50,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:50,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-21 17:03:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:50,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:50,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:50,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:50,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-21 17:03:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:50,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:50,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:03:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:50,345 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-08-21 17:03:50,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352877183] [2020-08-21 17:03:50,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:03:50,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 17:03:50,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608268008] [2020-08-21 17:03:50,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:03:50,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:03:50,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:03:50,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:03:50,347 INFO L87 Difference]: Start difference. First operand 550 states and 707 transitions. Second operand 10 states. [2020-08-21 17:03:50,539 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-21 17:03:51,276 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-08-21 17:03:52,078 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 17:03:52,946 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 17:03:53,122 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 17:03:54,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:03:54,348 INFO L93 Difference]: Finished difference Result 1271 states and 1638 transitions. [2020-08-21 17:03:54,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 17:03:54,349 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 158 [2020-08-21 17:03:54,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:03:54,354 INFO L225 Difference]: With dead ends: 1271 [2020-08-21 17:03:54,354 INFO L226 Difference]: Without dead ends: 746 [2020-08-21 17:03:54,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-08-21 17:03:54,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2020-08-21 17:03:54,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 430. [2020-08-21 17:03:54,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-08-21 17:03:54,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 531 transitions. [2020-08-21 17:03:54,403 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 531 transitions. Word has length 158 [2020-08-21 17:03:54,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:03:54,403 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 531 transitions. [2020-08-21 17:03:54,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:03:54,404 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 531 transitions. [2020-08-21 17:03:54,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-21 17:03:54,406 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:03:54,406 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:03:54,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 17:03:54,407 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:03:54,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:03:54,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1391356121, now seen corresponding path program 1 times [2020-08-21 17:03:54,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:03:54,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367778265] [2020-08-21 17:03:54,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:03:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:54,612 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 17:03:54,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:03:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:54,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:03:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:54,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:54,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:03:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:54,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 17:03:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:54,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 17:03:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:54,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:54,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:03:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:54,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 17:03:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:54,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 17:03:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:54,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 17:03:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:54,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 17:03:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:54,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 17:03:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:54,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 17:03:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:54,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 17:03:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:54,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 17:03:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:54,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 17:03:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:54,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 17:03:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:54,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 17:03:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:54,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:54,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-21 17:03:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:54,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:54,750 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-08-21 17:03:54,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367778265] [2020-08-21 17:03:54,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:03:54,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 17:03:54,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565251924] [2020-08-21 17:03:54,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:03:54,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:03:54,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:03:54,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:03:54,753 INFO L87 Difference]: Start difference. First operand 430 states and 531 transitions. Second operand 8 states. [2020-08-21 17:03:54,892 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-21 17:03:57,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:03:57,859 INFO L93 Difference]: Finished difference Result 980 states and 1265 transitions. [2020-08-21 17:03:57,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 17:03:57,860 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 151 [2020-08-21 17:03:57,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:03:57,864 INFO L225 Difference]: With dead ends: 980 [2020-08-21 17:03:57,864 INFO L226 Difference]: Without dead ends: 592 [2020-08-21 17:03:57,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:03:57,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-08-21 17:03:57,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 453. [2020-08-21 17:03:57,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-08-21 17:03:57,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 568 transitions. [2020-08-21 17:03:57,913 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 568 transitions. Word has length 151 [2020-08-21 17:03:57,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:03:57,913 INFO L479 AbstractCegarLoop]: Abstraction has 453 states and 568 transitions. [2020-08-21 17:03:57,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:03:57,913 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 568 transitions. [2020-08-21 17:03:57,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-21 17:03:57,916 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:03:57,916 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:03:57,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 17:03:57,916 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:03:57,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:03:57,917 INFO L82 PathProgramCache]: Analyzing trace with hash -642852378, now seen corresponding path program 2 times [2020-08-21 17:03:57,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:03:57,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472869980] [2020-08-21 17:03:57,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:03:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:58,190 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 17:03:58,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:03:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:58,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:03:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:58,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:03:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:58,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:03:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:58,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 17:03:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:58,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:58,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:03:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:58,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 17:03:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:58,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:58,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:58,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:03:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:58,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:03:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:58,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 17:03:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:58,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:58,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:58,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:03:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:58,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:03:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:58,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 17:03:58,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:58,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:58,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:58,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:03:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:58,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:03:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:58,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 17:03:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:58,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:03:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:03:58,436 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-21 17:03:58,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472869980] [2020-08-21 17:03:58,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:03:58,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 17:03:58,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301886753] [2020-08-21 17:03:58,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 17:03:58,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:03:58,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 17:03:58,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:03:58,438 INFO L87 Difference]: Start difference. First operand 453 states and 568 transitions. Second operand 7 states. [2020-08-21 17:03:58,575 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-21 17:03:58,795 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-08-21 17:03:58,969 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-08-21 17:04:00,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:04:00,962 INFO L93 Difference]: Finished difference Result 553 states and 710 transitions. [2020-08-21 17:04:00,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 17:04:00,963 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-08-21 17:04:00,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:04:00,963 INFO L225 Difference]: With dead ends: 553 [2020-08-21 17:04:00,964 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 17:04:00,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-21 17:04:00,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 17:04:00,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 17:04:00,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 17:04:00,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 17:04:00,966 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 164 [2020-08-21 17:04:00,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:04:00,967 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 17:04:00,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 17:04:00,967 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 17:04:00,967 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 17:04:00,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 17:04:00,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 17:04:01,295 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 7 [2020-08-21 17:04:01,464 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 7 [2020-08-21 17:04:02,438 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 7 [2020-08-21 17:04:02,589 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 7 [2020-08-21 17:04:02,718 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 6 [2020-08-21 17:04:04,147 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 7 [2020-08-21 17:04:04,292 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 7