/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:31:24,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:31:24,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:31:24,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:31:24,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:31:24,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:31:24,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:31:24,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:31:24,677 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:31:24,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:31:24,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:31:24,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:31:24,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:31:24,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:31:24,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:31:24,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:31:24,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:31:24,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:31:24,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:31:24,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:31:24,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:31:24,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:31:24,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:31:24,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:31:24,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:31:24,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:31:24,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:31:24,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:31:24,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:31:24,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:31:24,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:31:24,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:31:24,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:31:24,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:31:24,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:31:24,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:31:24,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:31:24,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:31:24,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:31:24,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:31:24,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:31:24,740 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-19 06:31:24,784 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:31:24,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:31:24,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:31:24,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:31:24,787 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:31:24,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:31:24,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:31:24,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:31:24,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:31:24,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:31:24,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:31:24,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:31:24,790 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:31:24,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:31:24,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:31:24,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:31:24,791 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:31:24,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:31:24,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:31:24,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:31:24,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:31:24,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:31:24,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:31:24,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:31:24,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:31:24,793 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:31:24,793 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-19 06:31:24,793 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 06:31:25,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:31:25,167 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:31:25,170 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:31:25,174 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:31:25,174 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:31:25,175 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-19 06:31:25,250 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41a48a541/0f1a262b8107402393bffdfbb5c2ba0e/FLAGe1ef4a8c9 [2020-08-19 06:31:25,893 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:31:25,894 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-19 06:31:25,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41a48a541/0f1a262b8107402393bffdfbb5c2ba0e/FLAGe1ef4a8c9 [2020-08-19 06:31:26,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41a48a541/0f1a262b8107402393bffdfbb5c2ba0e [2020-08-19 06:31:26,111 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:31:26,112 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:31:26,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:31:26,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:31:26,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:31:26,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:31:26" (1/1) ... [2020-08-19 06:31:26,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12f57cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:26, skipping insertion in model container [2020-08-19 06:31:26,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:31:26" (1/1) ... [2020-08-19 06:31:26,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:31:26,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:31:26,610 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1323] [2020-08-19 06:31:26,611 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1324-1325] [2020-08-19 06:31:26,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:31:26,957 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:31:27,066 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1323] [2020-08-19 06:31:27,067 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1324-1325] [2020-08-19 06:31:27,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:31:27,307 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:31:27,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:27 WrapperNode [2020-08-19 06:31:27,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:31:27,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:31:27,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:31:27,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:31:27,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:27" (1/1) ... [2020-08-19 06:31:27,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:27" (1/1) ... [2020-08-19 06:31:27,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:27" (1/1) ... [2020-08-19 06:31:27,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:27" (1/1) ... [2020-08-19 06:31:27,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:27" (1/1) ... [2020-08-19 06:31:27,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:27" (1/1) ... [2020-08-19 06:31:27,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:27" (1/1) ... [2020-08-19 06:31:27,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:31:27,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:31:27,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:31:27,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:31:27,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:31:27,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:31:27,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:31:27,565 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-08-19 06:31:27,566 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-19 06:31:27,566 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2020-08-19 06:31:27,566 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2020-08-19 06:31:27,566 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-19 06:31:27,567 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-19 06:31:27,567 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_name [2020-08-19 06:31:27,568 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 06:31:27,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-19 06:31:27,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-19 06:31:27,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-19 06:31:27,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-19 06:31:27,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-19 06:31:27,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-19 06:31:27,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-19 06:31:27,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-19 06:31:27,571 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2020-08-19 06:31:27,572 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_allocate_port [2020-08-19 06:31:27,572 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_free_port [2020-08-19 06:31:27,572 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_name [2020-08-19 06:31:27,572 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_valid [2020-08-19 06:31:27,573 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_len [2020-08-19 06:31:27,573 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_start [2020-08-19 06:31:27,573 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_valid [2020-08-19 06:31:27,574 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_len [2020-08-19 06:31:27,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_isa_probe [2020-08-19 06:31:27,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_pnp_probe [2020-08-19 06:31:27,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_init [2020-08-19 06:31:27,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_exit [2020-08-19 06:31:27,575 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:31:27,575 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-19 06:31:27,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2020-08-19 06:31:27,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-19 06:31:27,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2020-08-19 06:31:27,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2020-08-19 06:31:27,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2020-08-19 06:31:27,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2020-08-19 06:31:27,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __gameport_register_port [2020-08-19 06:31:27,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-19 06:31:27,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-08-19 06:31:27,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-08-19 06:31:27,577 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_phys [2020-08-19 06:31:27,577 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_unregister_port [2020-08-19 06:31:27,578 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2020-08-19 06:31:27,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-19 06:31:27,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-19 06:31:27,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_1 [2020-08-19 06:31:27,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2020-08-19 06:31:27,578 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2020-08-19 06:31:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_get_resource [2020-08-19 06:31:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_register_driver [2020-08-19 06:31:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_unregister_driver [2020-08-19 06:31:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-19 06:31:27,580 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2020-08-19 06:31:27,580 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-19 06:31:27,580 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-19 06:31:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:31:27,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-19 06:31:27,581 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-19 06:31:27,581 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-19 06:31:27,581 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-08-19 06:31:27,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 06:31:27,581 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-19 06:31:27,582 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2020-08-19 06:31:27,582 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2020-08-19 06:31:27,582 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2020-08-19 06:31:27,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:31:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-08-19 06:31:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-08-19 06:31:27,584 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-19 06:31:27,584 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-19 06:31:27,585 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_name [2020-08-19 06:31:27,585 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-19 06:31:27,585 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2020-08-19 06:31:27,585 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-19 06:31:27,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2020-08-19 06:31:27,586 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 06:31:27,586 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 06:31:27,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:31:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-19 06:31:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 06:31:27,588 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 06:31:27,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-19 06:31:27,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 06:31:27,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-19 06:31:27,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-19 06:31:27,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-19 06:31:27,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-19 06:31:27,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-19 06:31:27,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-19 06:31:27,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-19 06:31:27,590 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2020-08-19 06:31:27,590 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2020-08-19 06:31:27,590 INFO L130 BoogieDeclarations]: Found specification of procedure __gameport_register_port [2020-08-19 06:31:27,590 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_unregister_port [2020-08-19 06:31:27,590 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_phys [2020-08-19 06:31:27,590 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_allocate_port [2020-08-19 06:31:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_free_port [2020-08-19 06:31:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_name [2020-08-19 06:31:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_get_resource [2020-08-19 06:31:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_valid [2020-08-19 06:31:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_len [2020-08-19 06:31:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_start [2020-08-19 06:31:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_valid [2020-08-19 06:31:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_len [2020-08-19 06:31:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_register_driver [2020-08-19 06:31:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_unregister_driver [2020-08-19 06:31:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_isa_probe [2020-08-19 06:31:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:31:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:31:27,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 06:31:27,594 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_pnp_probe [2020-08-19 06:31:27,594 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_init [2020-08-19 06:31:27,595 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_exit [2020-08-19 06:31:27,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-19 06:31:27,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-19 06:31:27,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_1 [2020-08-19 06:31:27,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:31:27,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2020-08-19 06:31:27,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-19 06:31:27,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2020-08-19 06:31:27,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2020-08-19 06:31:27,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2020-08-19 06:31:27,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2020-08-19 06:31:27,598 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 06:31:27,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:31:27,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:31:27,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 06:31:27,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 06:31:27,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:31:28,376 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-19 06:31:29,130 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:31:29,130 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 06:31:29,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:31:29 BoogieIcfgContainer [2020-08-19 06:31:29,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:31:29,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:31:29,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:31:29,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:31:29,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:31:26" (1/3) ... [2020-08-19 06:31:29,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c96c0c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:31:29, skipping insertion in model container [2020-08-19 06:31:29,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:27" (2/3) ... [2020-08-19 06:31:29,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c96c0c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:31:29, skipping insertion in model container [2020-08-19 06:31:29,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:31:29" (3/3) ... [2020-08-19 06:31:29,145 INFO L109 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-19 06:31:29,156 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:31:29,165 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:31:29,180 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:31:29,208 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:31:29,209 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:31:29,209 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:31:29,209 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:31:29,209 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:31:29,209 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:31:29,210 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:31:29,210 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:31:29,237 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states. [2020-08-19 06:31:29,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-19 06:31:29,251 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:31:29,253 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:31:29,253 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:31:29,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:31:29,260 INFO L82 PathProgramCache]: Analyzing trace with hash -2083768503, now seen corresponding path program 1 times [2020-08-19 06:31:29,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:31:29,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517579217] [2020-08-19 06:31:29,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:31:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:30,112 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 06:31:30,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:31:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:30,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:31:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:30,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:31:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:30,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:31:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:30,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-19 06:31:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:30,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 06:31:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:30,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:30,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 06:31:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:30,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 06:31:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:30,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-19 06:31:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:30,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 06:31:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:30,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 06:31:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:30,351 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 06:31:30,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517579217] [2020-08-19 06:31:30,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:31:30,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 06:31:30,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533866026] [2020-08-19 06:31:30,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:31:30,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:31:30,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:31:30,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:31:30,378 INFO L87 Difference]: Start difference. First operand 348 states. Second operand 10 states. [2020-08-19 06:31:30,598 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-19 06:31:31,529 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-19 06:31:32,515 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-19 06:31:32,675 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-19 06:31:32,902 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-19 06:31:33,073 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-19 06:31:34,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:31:34,893 INFO L93 Difference]: Finished difference Result 815 states and 1118 transitions. [2020-08-19 06:31:34,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 06:31:34,895 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-08-19 06:31:34,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:31:34,914 INFO L225 Difference]: With dead ends: 815 [2020-08-19 06:31:34,914 INFO L226 Difference]: Without dead ends: 429 [2020-08-19 06:31:34,923 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 [2020-08-19 06:31:34,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-08-19 06:31:35,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 306. [2020-08-19 06:31:35,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-08-19 06:31:35,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 386 transitions. [2020-08-19 06:31:35,055 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 386 transitions. Word has length 91 [2020-08-19 06:31:35,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:31:35,056 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 386 transitions. [2020-08-19 06:31:35,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 06:31:35,056 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 386 transitions. [2020-08-19 06:31:35,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-19 06:31:35,068 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:31:35,068 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:31:35,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:31:35,072 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:31:35,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:31:35,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1314856814, now seen corresponding path program 1 times [2020-08-19 06:31:35,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:31:35,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194772848] [2020-08-19 06:31:35,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:31:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:35,365 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 06:31:35,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:31:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:35,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:31:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:35,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:31:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:35,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:31:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:35,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-19 06:31:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:35,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 06:31:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:35,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:35,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:31:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:35,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-19 06:31:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:35,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 06:31:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:35,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 06:31:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:35,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 06:31:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:35,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 06:31:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:35,464 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 06:31:35,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194772848] [2020-08-19 06:31:35,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:31:35,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 06:31:35,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921391510] [2020-08-19 06:31:35,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:31:35,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:31:35,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:31:35,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:31:35,468 INFO L87 Difference]: Start difference. First operand 306 states and 386 transitions. Second operand 6 states. [2020-08-19 06:31:35,605 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-19 06:31:38,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:31:38,105 INFO L93 Difference]: Finished difference Result 722 states and 963 transitions. [2020-08-19 06:31:38,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 06:31:38,106 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-08-19 06:31:38,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:31:38,114 INFO L225 Difference]: With dead ends: 722 [2020-08-19 06:31:38,114 INFO L226 Difference]: Without dead ends: 441 [2020-08-19 06:31:38,116 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 [2020-08-19 06:31:38,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-08-19 06:31:38,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 308. [2020-08-19 06:31:38,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-08-19 06:31:38,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 388 transitions. [2020-08-19 06:31:38,168 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 388 transitions. Word has length 97 [2020-08-19 06:31:38,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:31:38,169 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 388 transitions. [2020-08-19 06:31:38,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:31:38,169 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 388 transitions. [2020-08-19 06:31:38,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-08-19 06:31:38,172 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:31:38,172 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:31:38,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:31:38,173 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:31:38,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:31:38,173 INFO L82 PathProgramCache]: Analyzing trace with hash -492581383, now seen corresponding path program 1 times [2020-08-19 06:31:38,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:31:38,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455157482] [2020-08-19 06:31:38,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:31:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,417 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 06:31:38,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:31:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:31:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:31:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:31:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 06:31:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:31:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-19 06:31:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:31:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 06:31:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:31:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 06:31:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:31:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,632 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-19 06:31:38,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455157482] [2020-08-19 06:31:38,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:31:38,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 06:31:38,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293515779] [2020-08-19 06:31:38,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:31:38,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:31:38,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:31:38,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:31:38,636 INFO L87 Difference]: Start difference. First operand 308 states and 388 transitions. Second operand 6 states. [2020-08-19 06:31:38,754 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-19 06:31:38,958 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-08-19 06:31:39,129 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-08-19 06:31:42,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:31:42,231 INFO L93 Difference]: Finished difference Result 945 states and 1246 transitions. [2020-08-19 06:31:42,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 06:31:42,236 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-08-19 06:31:42,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:31:42,242 INFO L225 Difference]: With dead ends: 945 [2020-08-19 06:31:42,243 INFO L226 Difference]: Without dead ends: 662 [2020-08-19 06:31:42,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-19 06:31:42,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2020-08-19 06:31:42,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 489. [2020-08-19 06:31:42,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-08-19 06:31:42,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 617 transitions. [2020-08-19 06:31:42,311 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 617 transitions. Word has length 123 [2020-08-19 06:31:42,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:31:42,311 INFO L479 AbstractCegarLoop]: Abstraction has 489 states and 617 transitions. [2020-08-19 06:31:42,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:31:42,311 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 617 transitions. [2020-08-19 06:31:42,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-08-19 06:31:42,314 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:31:42,314 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:31:42,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:31:42,315 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:31:42,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:31:42,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1067393612, now seen corresponding path program 1 times [2020-08-19 06:31:42,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:31:42,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595401576] [2020-08-19 06:31:42,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:31:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:42,537 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 06:31:42,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:31:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:42,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:31:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:42,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:31:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:42,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:31:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:42,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-19 06:31:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:42,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 06:31:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:42,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:42,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:31:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:42,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-19 06:31:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:42,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 06:31:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:42,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 06:31:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:42,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 06:31:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:42,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 06:31:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:42,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 06:31:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:42,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 06:31:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:42,727 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-08-19 06:31:42,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595401576] [2020-08-19 06:31:42,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:31:42,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 06:31:42,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458457037] [2020-08-19 06:31:42,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 06:31:42,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:31:42,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 06:31:42,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-19 06:31:42,730 INFO L87 Difference]: Start difference. First operand 489 states and 617 transitions. Second operand 7 states. [2020-08-19 06:31:42,871 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-19 06:31:45,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:31:45,942 INFO L93 Difference]: Finished difference Result 1237 states and 1674 transitions. [2020-08-19 06:31:45,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 06:31:45,943 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-08-19 06:31:45,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:31:45,952 INFO L225 Difference]: With dead ends: 1237 [2020-08-19 06:31:45,952 INFO L226 Difference]: Without dead ends: 773 [2020-08-19 06:31:45,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:31:45,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-08-19 06:31:46,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 541. [2020-08-19 06:31:46,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2020-08-19 06:31:46,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 699 transitions. [2020-08-19 06:31:46,048 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 699 transitions. Word has length 110 [2020-08-19 06:31:46,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:31:46,050 INFO L479 AbstractCegarLoop]: Abstraction has 541 states and 699 transitions. [2020-08-19 06:31:46,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 06:31:46,050 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 699 transitions. [2020-08-19 06:31:46,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-19 06:31:46,055 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:31:46,055 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] [2020-08-19 06:31:46,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:31:46,055 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:31:46,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:31:46,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1281815870, now seen corresponding path program 1 times [2020-08-19 06:31:46,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:31:46,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600100581] [2020-08-19 06:31:46,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:31:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:46,252 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 06:31:46,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:31:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:46,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:31:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:46,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:31:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:46,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:31:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:46,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 06:31:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:46,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:46,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 06:31:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:46,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:46,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:46,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:31:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:46,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-19 06:31:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:46,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:46,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:46,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:31:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:46,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 06:31:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:46,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:46,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:46,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:31:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:46,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-19 06:31:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:46,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:46,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:31:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-19 06:31:46,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600100581] [2020-08-19 06:31:46,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:31:46,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:31:46,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973888418] [2020-08-19 06:31:46,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:31:46,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:31:46,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:31:46,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:31:46,542 INFO L87 Difference]: Start difference. First operand 541 states and 699 transitions. Second operand 9 states. [2020-08-19 06:31:46,693 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-19 06:31:47,272 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-08-19 06:31:49,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:31:49,941 INFO L93 Difference]: Finished difference Result 1246 states and 1663 transitions. [2020-08-19 06:31:49,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 06:31:49,942 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 143 [2020-08-19 06:31:49,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:31:49,957 INFO L225 Difference]: With dead ends: 1246 [2020-08-19 06:31:49,957 INFO L226 Difference]: Without dead ends: 708 [2020-08-19 06:31:49,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-08-19 06:31:49,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-08-19 06:31:50,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 538. [2020-08-19 06:31:50,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-08-19 06:31:50,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 692 transitions. [2020-08-19 06:31:50,048 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 692 transitions. Word has length 143 [2020-08-19 06:31:50,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:31:50,048 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 692 transitions. [2020-08-19 06:31:50,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:31:50,049 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 692 transitions. [2020-08-19 06:31:50,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-19 06:31:50,056 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:31:50,057 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:31:50,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:31:50,057 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:31:50,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:31:50,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1536881969, now seen corresponding path program 1 times [2020-08-19 06:31:50,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:31:50,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142259800] [2020-08-19 06:31:50,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:31:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,321 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 06:31:50,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:31:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:31:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:31:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:31:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 06:31:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:31:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-19 06:31:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:31:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 06:31:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:31:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 06:31:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:31:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-19 06:31:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:31:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,620 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-19 06:31:50,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142259800] [2020-08-19 06:31:50,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:31:50,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 06:31:50,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150954962] [2020-08-19 06:31:50,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:31:50,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:31:50,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:31:50,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:31:50,624 INFO L87 Difference]: Start difference. First operand 538 states and 692 transitions. Second operand 10 states. [2020-08-19 06:31:50,783 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-19 06:31:51,475 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-19 06:31:51,649 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-19 06:31:54,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:31:54,198 INFO L93 Difference]: Finished difference Result 1233 states and 1636 transitions. [2020-08-19 06:31:54,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 06:31:54,198 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-08-19 06:31:54,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:31:54,204 INFO L225 Difference]: With dead ends: 1233 [2020-08-19 06:31:54,204 INFO L226 Difference]: Without dead ends: 702 [2020-08-19 06:31:54,206 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 [2020-08-19 06:31:54,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2020-08-19 06:31:54,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 538. [2020-08-19 06:31:54,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-08-19 06:31:54,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 690 transitions. [2020-08-19 06:31:54,268 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 690 transitions. Word has length 152 [2020-08-19 06:31:54,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:31:54,269 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 690 transitions. [2020-08-19 06:31:54,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 06:31:54,269 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 690 transitions. [2020-08-19 06:31:54,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-19 06:31:54,274 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:31:54,274 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] [2020-08-19 06:31:54,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:31:54,275 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:31:54,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:31:54,275 INFO L82 PathProgramCache]: Analyzing trace with hash -968590774, now seen corresponding path program 1 times [2020-08-19 06:31:54,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:31:54,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388908024] [2020-08-19 06:31:54,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:31:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:54,541 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 06:31:54,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:31:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:54,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:31:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:54,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:31:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:54,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:31:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:54,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 06:31:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:54,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:54,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:31:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:54,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-19 06:31:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:54,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:54,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:54,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:31:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:54,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 06:31:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:54,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:54,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:54,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:31:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:54,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 06:31:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:54,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:54,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:54,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:31:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:54,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-19 06:31:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:54,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:54,866 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-08-19 06:31:54,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388908024] [2020-08-19 06:31:54,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:31:54,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 06:31:54,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746019444] [2020-08-19 06:31:54,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 06:31:54,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:31:54,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 06:31:54,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-08-19 06:31:54,869 INFO L87 Difference]: Start difference. First operand 538 states and 690 transitions. Second operand 13 states. [2020-08-19 06:31:55,041 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-19 06:31:55,779 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-19 06:31:56,237 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-19 06:31:56,418 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-19 06:31:56,621 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-19 06:31:56,801 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-19 06:31:56,980 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-08-19 06:31:57,178 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-08-19 06:31:58,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:31:58,990 INFO L93 Difference]: Finished difference Result 1217 states and 1615 transitions. [2020-08-19 06:31:58,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 06:31:58,992 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 146 [2020-08-19 06:31:58,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:31:58,998 INFO L225 Difference]: With dead ends: 1217 [2020-08-19 06:31:58,998 INFO L226 Difference]: Without dead ends: 704 [2020-08-19 06:31:59,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-08-19 06:31:59,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-08-19 06:31:59,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 545. [2020-08-19 06:31:59,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-08-19 06:31:59,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 702 transitions. [2020-08-19 06:31:59,054 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 702 transitions. Word has length 146 [2020-08-19 06:31:59,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:31:59,055 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 702 transitions. [2020-08-19 06:31:59,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 06:31:59,055 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 702 transitions. [2020-08-19 06:31:59,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-19 06:31:59,058 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:31:59,058 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:31:59,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 06:31:59,059 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:31:59,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:31:59,059 INFO L82 PathProgramCache]: Analyzing trace with hash 948696336, now seen corresponding path program 1 times [2020-08-19 06:31:59,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:31:59,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506446375] [2020-08-19 06:31:59,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:31:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:59,270 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 06:31:59,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:31:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:59,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:31:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:59,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:31:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:59,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:31:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:59,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 06:31:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:59,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:59,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:31:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:59,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-19 06:31:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:59,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:59,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:59,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:31:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:59,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 06:31:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:59,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:59,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:59,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:31:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:59,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:31:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:59,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-19 06:31:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:59,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:59,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:59,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:31:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:59,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:31:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:59,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-19 06:31:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:59,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:59,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:31:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:59,613 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-19 06:31:59,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506446375] [2020-08-19 06:31:59,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:31:59,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 06:31:59,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006945600] [2020-08-19 06:31:59,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 06:31:59,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:31:59,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 06:31:59,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-19 06:31:59,621 INFO L87 Difference]: Start difference. First operand 545 states and 702 transitions. Second operand 11 states. [2020-08-19 06:31:59,811 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-19 06:32:01,317 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-08-19 06:32:01,494 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-19 06:32:01,666 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-19 06:32:01,849 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-19 06:32:02,021 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-19 06:32:03,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:32:03,747 INFO L93 Difference]: Finished difference Result 1168 states and 1528 transitions. [2020-08-19 06:32:03,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 06:32:03,747 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 164 [2020-08-19 06:32:03,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:32:03,752 INFO L225 Difference]: With dead ends: 1168 [2020-08-19 06:32:03,752 INFO L226 Difference]: Without dead ends: 648 [2020-08-19 06:32:03,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-08-19 06:32:03,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-08-19 06:32:03,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 550. [2020-08-19 06:32:03,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-08-19 06:32:03,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 707 transitions. [2020-08-19 06:32:03,806 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 707 transitions. Word has length 164 [2020-08-19 06:32:03,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:32:03,806 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 707 transitions. [2020-08-19 06:32:03,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 06:32:03,806 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 707 transitions. [2020-08-19 06:32:03,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-19 06:32:03,809 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:32:03,809 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:32:03,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 06:32:03,809 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:32:03,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:32:03,810 INFO L82 PathProgramCache]: Analyzing trace with hash 925896005, now seen corresponding path program 1 times [2020-08-19 06:32:03,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:32:03,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839898899] [2020-08-19 06:32:03,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:32:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:04,023 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 06:32:04,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:32:04,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:04,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:32:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:04,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:32:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:04,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:32:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:04,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 06:32:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:04,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:32:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:04,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:32:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:04,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-19 06:32:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:04,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:32:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:04,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:32:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:04,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:32:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:04,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:32:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:04,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 06:32:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:04,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:32:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:04,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:32:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:04,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:32:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:04,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-19 06:32:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:04,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:32:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:04,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:32:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:04,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:32:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:04,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-19 06:32:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:04,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:32:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:04,256 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-08-19 06:32:04,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839898899] [2020-08-19 06:32:04,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:32:04,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 06:32:04,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170591040] [2020-08-19 06:32:04,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:32:04,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:32:04,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:32:04,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:32:04,259 INFO L87 Difference]: Start difference. First operand 550 states and 707 transitions. Second operand 10 states. [2020-08-19 06:32:04,401 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-19 06:32:05,041 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-08-19 06:32:05,774 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-19 06:32:06,437 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-19 06:32:06,611 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-19 06:32:07,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:32:07,553 INFO L93 Difference]: Finished difference Result 1271 states and 1638 transitions. [2020-08-19 06:32:07,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 06:32:07,554 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-08-19 06:32:07,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:32:07,558 INFO L225 Difference]: With dead ends: 1271 [2020-08-19 06:32:07,559 INFO L226 Difference]: Without dead ends: 746 [2020-08-19 06:32:07,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-08-19 06:32:07,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2020-08-19 06:32:07,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 430. [2020-08-19 06:32:07,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-08-19 06:32:07,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 531 transitions. [2020-08-19 06:32:07,606 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 531 transitions. Word has length 152 [2020-08-19 06:32:07,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:32:07,607 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 531 transitions. [2020-08-19 06:32:07,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 06:32:07,607 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 531 transitions. [2020-08-19 06:32:07,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-19 06:32:07,609 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:32:07,610 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:32:07,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 06:32:07,610 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:32:07,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:32:07,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1391356121, now seen corresponding path program 1 times [2020-08-19 06:32:07,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:32:07,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321663403] [2020-08-19 06:32:07,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:32:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:07,832 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 06:32:07,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:32:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:07,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:32:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:07,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:32:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:07,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:32:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:07,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-19 06:32:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:07,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 06:32:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:07,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:32:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:07,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:32:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:07,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-19 06:32:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:07,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 06:32:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:07,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 06:32:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:07,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 06:32:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:07,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 06:32:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:07,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 06:32:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:07,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 06:32:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:07,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 06:32:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:07,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 06:32:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:07,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 06:32:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:07,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-19 06:32:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:07,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:32:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:07,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-19 06:32:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:07,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:32:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-08-19 06:32:07,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321663403] [2020-08-19 06:32:07,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:32:07,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 06:32:07,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642045800] [2020-08-19 06:32:07,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:32:07,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:32:07,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:32:07,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:32:07,995 INFO L87 Difference]: Start difference. First operand 430 states and 531 transitions. Second operand 8 states. [2020-08-19 06:32:08,173 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-19 06:32:11,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:32:11,197 INFO L93 Difference]: Finished difference Result 980 states and 1265 transitions. [2020-08-19 06:32:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 06:32:11,197 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 151 [2020-08-19 06:32:11,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:32:11,202 INFO L225 Difference]: With dead ends: 980 [2020-08-19 06:32:11,202 INFO L226 Difference]: Without dead ends: 592 [2020-08-19 06:32:11,204 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 [2020-08-19 06:32:11,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-08-19 06:32:11,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 453. [2020-08-19 06:32:11,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-08-19 06:32:11,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 568 transitions. [2020-08-19 06:32:11,251 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 568 transitions. Word has length 151 [2020-08-19 06:32:11,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:32:11,251 INFO L479 AbstractCegarLoop]: Abstraction has 453 states and 568 transitions. [2020-08-19 06:32:11,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:32:11,251 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 568 transitions. [2020-08-19 06:32:11,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-19 06:32:11,254 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:32:11,254 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:32:11,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 06:32:11,255 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:32:11,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:32:11,255 INFO L82 PathProgramCache]: Analyzing trace with hash -642852378, now seen corresponding path program 2 times [2020-08-19 06:32:11,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:32:11,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72210271] [2020-08-19 06:32:11,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:32:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:11,536 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 06:32:11,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:32:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:11,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:32:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:11,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:32:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:11,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:32:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:11,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 06:32:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:11,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:32:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:11,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:32:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:11,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-19 06:32:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:11,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:32:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:11,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:32:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:11,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:32:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:11,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:32:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:11,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 06:32:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:11,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:32:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:11,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:32:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:11,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:32:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:11,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:32:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:11,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 06:32:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:11,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:32:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:11,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:32:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:11,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:32:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:11,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:32:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:11,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-19 06:32:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:11,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:32:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:11,800 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-19 06:32:11,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72210271] [2020-08-19 06:32:11,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:32:11,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 06:32:11,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582967883] [2020-08-19 06:32:11,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 06:32:11,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:32:11,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 06:32:11,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-19 06:32:11,802 INFO L87 Difference]: Start difference. First operand 453 states and 568 transitions. Second operand 7 states. [2020-08-19 06:32:11,963 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-19 06:32:12,219 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-08-19 06:32:12,383 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-08-19 06:32:14,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:32:14,341 INFO L93 Difference]: Finished difference Result 553 states and 710 transitions. [2020-08-19 06:32:14,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 06:32:14,342 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-08-19 06:32:14,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:32:14,343 INFO L225 Difference]: With dead ends: 553 [2020-08-19 06:32:14,343 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 06:32:14,346 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 [2020-08-19 06:32:14,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 06:32:14,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 06:32:14,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 06:32:14,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 06:32:14,347 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 164 [2020-08-19 06:32:14,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:32:14,347 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 06:32:14,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 06:32:14,348 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 06:32:14,348 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 06:32:14,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 06:32:14,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 06:32:14,615 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 7 [2020-08-19 06:32:18,085 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 12 [2020-08-19 06:32:18,216 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-19 06:32:18,456 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-19 06:32:18,570 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-19 06:32:18,702 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 25 [2020-08-19 06:32:18,954 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 38 [2020-08-19 06:32:19,069 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 18 [2020-08-19 06:32:19,191 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 21 [2020-08-19 06:32:19,371 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 8 [2020-08-19 06:32:19,616 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-19 06:32:19,882 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 8 [2020-08-19 06:32:19,986 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-19 06:32:20,165 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 12