/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 05:59:26,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:59:26,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:59:26,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:59:26,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:59:26,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:59:26,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:59:26,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:59:26,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:59:26,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:59:26,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:59:26,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:59:26,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:59:26,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:59:26,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:59:26,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:59:26,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:59:26,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:59:26,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:59:26,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:59:26,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:59:26,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:59:26,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:59:26,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:59:26,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:59:26,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:59:26,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:59:26,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:59:26,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:59:26,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:59:26,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:59:26,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:59:26,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:59:26,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:59:26,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:59:26,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:59:26,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:59:26,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:59:26,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:59:26,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:59:26,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:59:26,692 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 [2020-08-22 05:59:26,737 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:59:26,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:59:26,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:59:26,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:59:26,740 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:59:26,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:59:26,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:59:26,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:59:26,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:59:26,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:59:26,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:59:26,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:59:26,743 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:59:26,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:59:26,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:59:26,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:59:26,744 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:59:26,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:59:26,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:59:26,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:59:26,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:59:26,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:59:26,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:59:26,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:59:26,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:59:26,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:59:26,746 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 05:59:26,746 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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:59:27,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:59:27,082 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:59:27,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:59:27,087 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:59:27,088 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:59:27,088 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-22 05:59:27,151 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/151e9f3c6/f04b189627e944c3bc946e1d63c26b32/FLAG58d51c4f2 [2020-08-22 05:59:27,754 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:59:27,755 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-22 05:59:27,786 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/151e9f3c6/f04b189627e944c3bc946e1d63c26b32/FLAG58d51c4f2 [2020-08-22 05:59:27,950 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/151e9f3c6/f04b189627e944c3bc946e1d63c26b32 [2020-08-22 05:59:27,961 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:59:27,962 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:59:27,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:59:27,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:59:27,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:59:27,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:59:27" (1/1) ... [2020-08-22 05:59:27,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@514c228d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:27, skipping insertion in model container [2020-08-22 05:59:27,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:59:27" (1/1) ... [2020-08-22 05:59:27,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:59:28,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:59:28,464 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1323] [2020-08-22 05:59:28,464 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] [2020-08-22 05:59:28,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:59:28,890 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:59:28,941 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1323] [2020-08-22 05:59:28,941 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] [2020-08-22 05:59:29,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:59:29,067 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:59:29,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:29 WrapperNode [2020-08-22 05:59:29,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:59:29,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:59:29,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:59:29,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:59:29,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:29" (1/1) ... [2020-08-22 05:59:29,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:29" (1/1) ... [2020-08-22 05:59:29,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:29" (1/1) ... [2020-08-22 05:59:29,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:29" (1/1) ... [2020-08-22 05:59:29,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:29" (1/1) ... [2020-08-22 05:59:29,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:29" (1/1) ... [2020-08-22 05:59:29,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:29" (1/1) ... [2020-08-22 05:59:29,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:59:29,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:59:29,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:59:29,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:59:29,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:29" (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 [2020-08-22 05:59:29,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:59:29,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:59:29,318 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-08-22 05:59:29,318 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-22 05:59:29,318 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2020-08-22 05:59:29,319 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2020-08-22 05:59:29,320 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-22 05:59:29,321 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-22 05:59:29,321 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_name [2020-08-22 05:59:29,322 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 05:59:29,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-22 05:59:29,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-22 05:59:29,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-22 05:59:29,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-22 05:59:29,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-22 05:59:29,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-22 05:59:29,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-22 05:59:29,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-22 05:59:29,327 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2020-08-22 05:59:29,328 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_allocate_port [2020-08-22 05:59:29,328 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_free_port [2020-08-22 05:59:29,328 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_name [2020-08-22 05:59:29,329 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_valid [2020-08-22 05:59:29,329 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_len [2020-08-22 05:59:29,330 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_start [2020-08-22 05:59:29,330 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_valid [2020-08-22 05:59:29,330 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_len [2020-08-22 05:59:29,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_isa_probe [2020-08-22 05:59:29,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_pnp_probe [2020-08-22 05:59:29,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_init [2020-08-22 05:59:29,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_exit [2020-08-22 05:59:29,332 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:59:29,332 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-22 05:59:29,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2020-08-22 05:59:29,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-22 05:59:29,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2020-08-22 05:59:29,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2020-08-22 05:59:29,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2020-08-22 05:59:29,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2020-08-22 05:59:29,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __gameport_register_port [2020-08-22 05:59:29,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-22 05:59:29,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-08-22 05:59:29,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-08-22 05:59:29,336 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_phys [2020-08-22 05:59:29,336 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_unregister_port [2020-08-22 05:59:29,337 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2020-08-22 05:59:29,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-22 05:59:29,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-22 05:59:29,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_1 [2020-08-22 05:59:29,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2020-08-22 05:59:29,338 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2020-08-22 05:59:29,338 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_get_resource [2020-08-22 05:59:29,338 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_register_driver [2020-08-22 05:59:29,338 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_unregister_driver [2020-08-22 05:59:29,339 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-22 05:59:29,339 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2020-08-22 05:59:29,339 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-22 05:59:29,339 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-22 05:59:29,339 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:59:29,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-22 05:59:29,340 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-22 05:59:29,340 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-22 05:59:29,340 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-08-22 05:59:29,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:59:29,340 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-22 05:59:29,341 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2020-08-22 05:59:29,341 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2020-08-22 05:59:29,341 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2020-08-22 05:59:29,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:59:29,342 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-08-22 05:59:29,343 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-08-22 05:59:29,343 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-22 05:59:29,343 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-22 05:59:29,344 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_name [2020-08-22 05:59:29,345 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-22 05:59:29,345 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2020-08-22 05:59:29,345 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-22 05:59:29,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2020-08-22 05:59:29,346 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:59:29,346 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 05:59:29,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:59:29,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-22 05:59:29,346 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 05:59:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 05:59:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-22 05:59:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:59:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-22 05:59:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-22 05:59:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-22 05:59:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-22 05:59:29,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-22 05:59:29,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-22 05:59:29,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-22 05:59:29,349 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2020-08-22 05:59:29,350 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2020-08-22 05:59:29,350 INFO L130 BoogieDeclarations]: Found specification of procedure __gameport_register_port [2020-08-22 05:59:29,350 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_unregister_port [2020-08-22 05:59:29,351 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_phys [2020-08-22 05:59:29,351 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_allocate_port [2020-08-22 05:59:29,351 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_free_port [2020-08-22 05:59:29,351 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_name [2020-08-22 05:59:29,352 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_get_resource [2020-08-22 05:59:29,352 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_valid [2020-08-22 05:59:29,352 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_len [2020-08-22 05:59:29,352 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_start [2020-08-22 05:59:29,353 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_valid [2020-08-22 05:59:29,354 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_len [2020-08-22 05:59:29,354 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_register_driver [2020-08-22 05:59:29,354 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_unregister_driver [2020-08-22 05:59:29,354 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_isa_probe [2020-08-22 05:59:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:59:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:59:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:59:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_pnp_probe [2020-08-22 05:59:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_init [2020-08-22 05:59:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_exit [2020-08-22 05:59:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-22 05:59:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-22 05:59:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_1 [2020-08-22 05:59:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:59:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2020-08-22 05:59:29,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-22 05:59:29,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2020-08-22 05:59:29,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2020-08-22 05:59:29,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2020-08-22 05:59:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2020-08-22 05:59:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:59:29,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:59:29,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:59:29,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 05:59:29,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 05:59:29,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:59:30,182 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-22 05:59:30,754 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:59:30,754 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 05:59:30,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:59:30 BoogieIcfgContainer [2020-08-22 05:59:30,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:59:30,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:59:30,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:59:30,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:59:30,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:59:27" (1/3) ... [2020-08-22 05:59:30,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351e64e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:59:30, skipping insertion in model container [2020-08-22 05:59:30,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:29" (2/3) ... [2020-08-22 05:59:30,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351e64e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:59:30, skipping insertion in model container [2020-08-22 05:59:30,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:59:30" (3/3) ... [2020-08-22 05:59:30,768 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 [2020-08-22 05:59:30,779 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:59:30,787 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:59:30,800 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:59:30,833 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:59:30,833 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:59:30,833 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:59:30,833 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:59:30,833 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:59:30,834 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:59:30,834 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:59:30,834 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:59:30,871 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states. [2020-08-22 05:59:30,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-22 05:59:30,891 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:59:30,892 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] [2020-08-22 05:59:30,892 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:59:30,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:59:30,898 INFO L82 PathProgramCache]: Analyzing trace with hash -2083768503, now seen corresponding path program 1 times [2020-08-22 05:59:30,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:59:30,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036263411] [2020-08-22 05:59:30,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:59:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,740 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-22 05:59:31,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:59:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:59:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-22 05:59:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 05:59:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 05:59:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 05:59:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-22 05:59:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 05:59:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 05:59:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,940 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 05:59:31,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036263411] [2020-08-22 05:59:31,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:59:31,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 05:59:31,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722035634] [2020-08-22 05:59:31,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:59:31,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:59:31,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:59:31,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:59:31,968 INFO L87 Difference]: Start difference. First operand 348 states. Second operand 10 states. [2020-08-22 05:59:32,148 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-22 05:59:33,215 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-22 05:59:34,409 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-22 05:59:34,581 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-22 05:59:34,757 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-22 05:59:34,910 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-22 05:59:36,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:59:36,832 INFO L93 Difference]: Finished difference Result 815 states and 1118 transitions. [2020-08-22 05:59:36,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 05:59:36,834 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-08-22 05:59:36,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:59:36,852 INFO L225 Difference]: With dead ends: 815 [2020-08-22 05:59:36,852 INFO L226 Difference]: Without dead ends: 429 [2020-08-22 05:59:36,861 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 [2020-08-22 05:59:36,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-08-22 05:59:36,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 306. [2020-08-22 05:59:36,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-08-22 05:59:36,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 386 transitions. [2020-08-22 05:59:36,977 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 386 transitions. Word has length 91 [2020-08-22 05:59:36,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:59:36,978 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 386 transitions. [2020-08-22 05:59:36,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:59:36,978 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 386 transitions. [2020-08-22 05:59:36,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-22 05:59:36,984 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:59:36,985 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] [2020-08-22 05:59:36,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:59:36,985 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:59:36,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:59:36,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1314856814, now seen corresponding path program 1 times [2020-08-22 05:59:36,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:59:36,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406109380] [2020-08-22 05:59:36,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:59:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:37,241 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-22 05:59:37,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:37,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:37,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:59:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:37,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:59:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:37,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-22 05:59:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:37,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 05:59:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:37,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:37,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:59:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:37,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 05:59:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:37,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 05:59:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:37,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 05:59:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:37,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 05:59:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:37,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 05:59:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:37,349 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 05:59:37,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406109380] [2020-08-22 05:59:37,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:59:37,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:59:37,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557228662] [2020-08-22 05:59:37,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:59:37,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:59:37,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:59:37,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:59:37,353 INFO L87 Difference]: Start difference. First operand 306 states and 386 transitions. Second operand 6 states. [2020-08-22 05:59:37,502 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-22 05:59:40,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:59:40,207 INFO L93 Difference]: Finished difference Result 722 states and 963 transitions. [2020-08-22 05:59:40,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 05:59:40,208 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-08-22 05:59:40,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:59:40,215 INFO L225 Difference]: With dead ends: 722 [2020-08-22 05:59:40,216 INFO L226 Difference]: Without dead ends: 441 [2020-08-22 05:59:40,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-08-22 05:59:40,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-08-22 05:59:40,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 308. [2020-08-22 05:59:40,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-08-22 05:59:40,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 388 transitions. [2020-08-22 05:59:40,319 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 388 transitions. Word has length 97 [2020-08-22 05:59:40,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:59:40,322 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 388 transitions. [2020-08-22 05:59:40,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:59:40,322 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 388 transitions. [2020-08-22 05:59:40,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-08-22 05:59:40,330 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:59:40,330 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] [2020-08-22 05:59:40,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:59:40,331 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:59:40,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:59:40,331 INFO L82 PathProgramCache]: Analyzing trace with hash -492581383, now seen corresponding path program 1 times [2020-08-22 05:59:40,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:59:40,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922000869] [2020-08-22 05:59:40,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:59:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:40,610 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-22 05:59:40,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:40,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:40,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:59:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:40,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:59:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:40,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 05:59:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:40,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:40,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:40,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:59:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:40,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 05:59:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:40,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:40,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:40,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:59:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:40,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 05:59:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:40,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:40,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:40,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:59:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:40,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-22 05:59:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:40,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:40,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:59:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:40,761 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-22 05:59:40,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922000869] [2020-08-22 05:59:40,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:59:40,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:59:40,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626413216] [2020-08-22 05:59:40,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:59:40,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:59:40,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:59:40,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:59:40,764 INFO L87 Difference]: Start difference. First operand 308 states and 388 transitions. Second operand 6 states. [2020-08-22 05:59:40,903 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-22 05:59:41,139 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-08-22 05:59:41,321 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-08-22 05:59:44,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:59:44,576 INFO L93 Difference]: Finished difference Result 945 states and 1246 transitions. [2020-08-22 05:59:44,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 05:59:44,577 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-08-22 05:59:44,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:59:44,584 INFO L225 Difference]: With dead ends: 945 [2020-08-22 05:59:44,584 INFO L226 Difference]: Without dead ends: 662 [2020-08-22 05:59:44,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 05:59:44,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2020-08-22 05:59:44,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 489. [2020-08-22 05:59:44,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-08-22 05:59:44,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 617 transitions. [2020-08-22 05:59:44,671 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 617 transitions. Word has length 123 [2020-08-22 05:59:44,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:59:44,671 INFO L479 AbstractCegarLoop]: Abstraction has 489 states and 617 transitions. [2020-08-22 05:59:44,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:59:44,671 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 617 transitions. [2020-08-22 05:59:44,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-08-22 05:59:44,674 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:59:44,674 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] [2020-08-22 05:59:44,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:59:44,674 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:59:44,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:59:44,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1067393612, now seen corresponding path program 1 times [2020-08-22 05:59:44,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:59:44,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237782452] [2020-08-22 05:59:44,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:59:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,890 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-22 05:59:44,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:59:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:59:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-22 05:59:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 05:59:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:59:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 05:59:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:45,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 05:59:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:45,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 05:59:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:45,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 05:59:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:45,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 05:59:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:45,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 05:59:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:45,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 05:59:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:45,029 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-08-22 05:59:45,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237782452] [2020-08-22 05:59:45,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:59:45,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 05:59:45,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726119151] [2020-08-22 05:59:45,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 05:59:45,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:59:45,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 05:59:45,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 05:59:45,032 INFO L87 Difference]: Start difference. First operand 489 states and 617 transitions. Second operand 7 states. [2020-08-22 05:59:45,162 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-22 05:59:48,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:59:48,037 INFO L93 Difference]: Finished difference Result 1237 states and 1674 transitions. [2020-08-22 05:59:48,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 05:59:48,038 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-08-22 05:59:48,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:59:48,045 INFO L225 Difference]: With dead ends: 1237 [2020-08-22 05:59:48,045 INFO L226 Difference]: Without dead ends: 773 [2020-08-22 05:59:48,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:59:48,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-08-22 05:59:48,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 541. [2020-08-22 05:59:48,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2020-08-22 05:59:48,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 699 transitions. [2020-08-22 05:59:48,130 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 699 transitions. Word has length 110 [2020-08-22 05:59:48,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:59:48,132 INFO L479 AbstractCegarLoop]: Abstraction has 541 states and 699 transitions. [2020-08-22 05:59:48,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 05:59:48,132 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 699 transitions. [2020-08-22 05:59:48,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-22 05:59:48,136 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:59:48,137 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:59:48,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:59:48,137 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:59:48,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:59:48,138 INFO L82 PathProgramCache]: Analyzing trace with hash 790920921, now seen corresponding path program 1 times [2020-08-22 05:59:48,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:59:48,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921420236] [2020-08-22 05:59:48,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:59:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,393 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-22 05:59:48,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:59:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:59:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 05:59:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 05:59:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:59:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-22 05:59:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:59:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 05:59:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:59:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 05:59:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,621 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-22 05:59:48,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921420236] [2020-08-22 05:59:48,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:59:48,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 05:59:48,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609960776] [2020-08-22 05:59:48,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 05:59:48,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:59:48,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 05:59:48,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:59:48,629 INFO L87 Difference]: Start difference. First operand 541 states and 699 transitions. Second operand 9 states. [2020-08-22 05:59:48,805 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-22 05:59:49,460 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-08-22 05:59:51,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:59:51,537 INFO L93 Difference]: Finished difference Result 1246 states and 1663 transitions. [2020-08-22 05:59:51,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 05:59:51,537 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2020-08-22 05:59:51,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:59:51,543 INFO L225 Difference]: With dead ends: 1246 [2020-08-22 05:59:51,543 INFO L226 Difference]: Without dead ends: 708 [2020-08-22 05:59:51,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-08-22 05:59:51,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-08-22 05:59:51,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 538. [2020-08-22 05:59:51,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-08-22 05:59:51,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 692 transitions. [2020-08-22 05:59:51,608 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 692 transitions. Word has length 137 [2020-08-22 05:59:51,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:59:51,608 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 692 transitions. [2020-08-22 05:59:51,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 05:59:51,608 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 692 transitions. [2020-08-22 05:59:51,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 05:59:51,611 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:59:51,611 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] [2020-08-22 05:59:51,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:59:51,612 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:59:51,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:59:51,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1536881969, now seen corresponding path program 1 times [2020-08-22 05:59:51,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:59:51,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860402156] [2020-08-22 05:59:51,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:59:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:51,859 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-22 05:59:51,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:51,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:51,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:59:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:51,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:59:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:51,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 05:59:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:51,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:51,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:59:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:51,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 05:59:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:51,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:51,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:51,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:59:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:51,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 05:59:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:51,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:51,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:59:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 05:59:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:59:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 05:59:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:59:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,063 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-22 05:59:52,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860402156] [2020-08-22 05:59:52,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:59:52,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 05:59:52,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935257434] [2020-08-22 05:59:52,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:59:52,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:59:52,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:59:52,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:59:52,065 INFO L87 Difference]: Start difference. First operand 538 states and 692 transitions. Second operand 10 states. [2020-08-22 05:59:52,209 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-22 05:59:52,926 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-22 05:59:53,106 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-22 05:59:55,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:59:55,653 INFO L93 Difference]: Finished difference Result 1233 states and 1636 transitions. [2020-08-22 05:59:55,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 05:59:55,654 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-08-22 05:59:55,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:59:55,659 INFO L225 Difference]: With dead ends: 1233 [2020-08-22 05:59:55,659 INFO L226 Difference]: Without dead ends: 702 [2020-08-22 05:59:55,662 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 [2020-08-22 05:59:55,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2020-08-22 05:59:55,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 538. [2020-08-22 05:59:55,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-08-22 05:59:55,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 690 transitions. [2020-08-22 05:59:55,724 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 690 transitions. Word has length 152 [2020-08-22 05:59:55,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:59:55,724 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 690 transitions. [2020-08-22 05:59:55,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:59:55,725 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 690 transitions. [2020-08-22 05:59:55,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 05:59:55,729 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:59:55,730 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] [2020-08-22 05:59:55,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:59:55,730 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:59:55,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:59:55,730 INFO L82 PathProgramCache]: Analyzing trace with hash -436283409, now seen corresponding path program 1 times [2020-08-22 05:59:55,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:59:55,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803009963] [2020-08-22 05:59:55,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:59:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:55,987 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-22 05:59:55,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:56,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:56,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:59:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:56,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:59:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:56,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 05:59:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:56,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:56,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:59:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:56,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 05:59:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:56,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:56,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:56,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:59:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:56,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 05:59:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:56,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:56,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:56,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:59:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:56,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 05:59:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:56,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:56,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:56,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:59:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:56,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 05:59:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:56,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:56,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:59:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:56,305 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-08-22 05:59:56,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803009963] [2020-08-22 05:59:56,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:59:56,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 05:59:56,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810915522] [2020-08-22 05:59:56,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 05:59:56,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:59:56,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 05:59:56,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-08-22 05:59:56,308 INFO L87 Difference]: Start difference. First operand 538 states and 690 transitions. Second operand 13 states. [2020-08-22 05:59:56,498 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-22 05:59:57,636 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-22 05:59:58,044 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-22 05:59:58,220 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-22 05:59:58,415 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-22 05:59:58,599 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-22 05:59:58,787 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-08-22 05:59:58,987 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-08-22 06:00:00,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:00:00,940 INFO L93 Difference]: Finished difference Result 1217 states and 1615 transitions. [2020-08-22 06:00:00,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 06:00:00,941 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-22 06:00:00,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:00:00,947 INFO L225 Difference]: With dead ends: 1217 [2020-08-22 06:00:00,947 INFO L226 Difference]: Without dead ends: 704 [2020-08-22 06:00:00,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-08-22 06:00:00,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-08-22 06:00:01,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 545. [2020-08-22 06:00:01,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-08-22 06:00:01,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 702 transitions. [2020-08-22 06:00:01,004 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 702 transitions. Word has length 152 [2020-08-22 06:00:01,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:00:01,004 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 702 transitions. [2020-08-22 06:00:01,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 06:00:01,005 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 702 transitions. [2020-08-22 06:00:01,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-08-22 06:00:01,007 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:00:01,007 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:00:01,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 06:00:01,008 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:00:01,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:00:01,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1538409515, now seen corresponding path program 1 times [2020-08-22 06:00:01,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:00:01,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918849708] [2020-08-22 06:00:01,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:00:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:01,237 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-22 06:00:01,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:00:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:01,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:00:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:01,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:00:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:01,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:00:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:01,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 06:00:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:01,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:01,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:00:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:01,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 06:00:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:01,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:01,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:01,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:00:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:01,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 06:00:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:01,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:01,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:01,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:00:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:01,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:00:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:01,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-22 06:00:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:01,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:01,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:01,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:00:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:01,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:00:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:01,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:00:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:01,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-08-22 06:00:01,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918849708] [2020-08-22 06:00:01,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:00:01,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 06:00:01,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710346290] [2020-08-22 06:00:01,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 06:00:01,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:00:01,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 06:00:01,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-22 06:00:01,563 INFO L87 Difference]: Start difference. First operand 545 states and 702 transitions. Second operand 11 states. [2020-08-22 06:00:01,782 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-22 06:00:03,137 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-08-22 06:00:03,333 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-22 06:00:03,518 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-22 06:00:03,707 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-22 06:00:03,884 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-22 06:00:05,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:00:05,786 INFO L93 Difference]: Finished difference Result 1168 states and 1528 transitions. [2020-08-22 06:00:05,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 06:00:05,787 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 158 [2020-08-22 06:00:05,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:00:05,791 INFO L225 Difference]: With dead ends: 1168 [2020-08-22 06:00:05,791 INFO L226 Difference]: Without dead ends: 648 [2020-08-22 06:00:05,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-08-22 06:00:05,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-08-22 06:00:05,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 550. [2020-08-22 06:00:05,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-08-22 06:00:05,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 707 transitions. [2020-08-22 06:00:05,844 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 707 transitions. Word has length 158 [2020-08-22 06:00:05,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:00:05,845 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 707 transitions. [2020-08-22 06:00:05,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 06:00:05,845 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 707 transitions. [2020-08-22 06:00:05,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-08-22 06:00:05,848 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:00:05,848 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:00:05,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 06:00:05,849 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:00:05,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:00:05,849 INFO L82 PathProgramCache]: Analyzing trace with hash -432995670, now seen corresponding path program 2 times [2020-08-22 06:00:05,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:00:05,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054457762] [2020-08-22 06:00:05,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:00:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:06,171 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-22 06:00:06,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:00:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:06,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:00:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:06,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:00:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:06,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:00:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:06,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 06:00:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:06,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:06,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:00:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:06,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 06:00:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:06,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:06,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:06,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:00:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:06,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:00:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:06,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 06:00:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:06,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:06,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:06,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:00:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:06,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-22 06:00:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:06,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:06,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:06,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:00:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:06,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 06:00:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:06,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:06,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:00:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:06,448 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-08-22 06:00:06,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054457762] [2020-08-22 06:00:06,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:00:06,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 06:00:06,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101862327] [2020-08-22 06:00:06,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 06:00:06,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:00:06,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 06:00:06,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:00:06,452 INFO L87 Difference]: Start difference. First operand 550 states and 707 transitions. Second operand 10 states. [2020-08-22 06:00:06,634 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-22 06:00:07,439 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-08-22 06:00:08,279 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-22 06:00:09,208 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-22 06:00:09,384 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-22 06:00:10,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:00:10,711 INFO L93 Difference]: Finished difference Result 1271 states and 1638 transitions. [2020-08-22 06:00:10,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 06:00:10,712 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 158 [2020-08-22 06:00:10,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:00:10,717 INFO L225 Difference]: With dead ends: 1271 [2020-08-22 06:00:10,718 INFO L226 Difference]: Without dead ends: 746 [2020-08-22 06:00:10,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-08-22 06:00:10,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2020-08-22 06:00:10,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 430. [2020-08-22 06:00:10,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-08-22 06:00:10,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 531 transitions. [2020-08-22 06:00:10,766 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 531 transitions. Word has length 158 [2020-08-22 06:00:10,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:00:10,766 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 531 transitions. [2020-08-22 06:00:10,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 06:00:10,766 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 531 transitions. [2020-08-22 06:00:10,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-22 06:00:10,769 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:00:10,769 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] [2020-08-22 06:00:10,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 06:00:10,769 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:00:10,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:00:10,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1391356121, now seen corresponding path program 1 times [2020-08-22 06:00:10,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:00:10,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130443572] [2020-08-22 06:00:10,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:00:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:10,979 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-22 06:00:10,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:00:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:11,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:00:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:11,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:00:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:11,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:00:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:11,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-22 06:00:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:11,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 06:00:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:11,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:11,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:00:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:11,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 06:00:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:11,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 06:00:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:11,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:00:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:11,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:00:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:11,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-22 06:00:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:11,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 06:00:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:11,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 06:00:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:11,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 06:00:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:11,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 06:00:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:11,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 06:00:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:11,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:00:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:11,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:11,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:00:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:11,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:11,130 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-08-22 06:00:11,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130443572] [2020-08-22 06:00:11,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:00:11,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 06:00:11,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978529158] [2020-08-22 06:00:11,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 06:00:11,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:00:11,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 06:00:11,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:00:11,133 INFO L87 Difference]: Start difference. First operand 430 states and 531 transitions. Second operand 8 states. [2020-08-22 06:00:11,332 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-22 06:00:14,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:00:14,406 INFO L93 Difference]: Finished difference Result 980 states and 1265 transitions. [2020-08-22 06:00:14,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 06:00:14,407 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 151 [2020-08-22 06:00:14,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:00:14,411 INFO L225 Difference]: With dead ends: 980 [2020-08-22 06:00:14,411 INFO L226 Difference]: Without dead ends: 592 [2020-08-22 06:00:14,413 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 [2020-08-22 06:00:14,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-08-22 06:00:14,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 453. [2020-08-22 06:00:14,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-08-22 06:00:14,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 568 transitions. [2020-08-22 06:00:14,481 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 568 transitions. Word has length 151 [2020-08-22 06:00:14,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:00:14,481 INFO L479 AbstractCegarLoop]: Abstraction has 453 states and 568 transitions. [2020-08-22 06:00:14,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 06:00:14,481 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 568 transitions. [2020-08-22 06:00:14,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-22 06:00:14,484 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:00:14,484 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] [2020-08-22 06:00:14,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 06:00:14,484 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:00:14,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:00:14,485 INFO L82 PathProgramCache]: Analyzing trace with hash -642852378, now seen corresponding path program 2 times [2020-08-22 06:00:14,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:00:14,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991027722] [2020-08-22 06:00:14,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:00:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:14,754 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-22 06:00:14,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:00:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:14,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:00:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:14,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:00:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:14,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:00:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:14,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 06:00:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:14,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:14,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:00:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:14,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 06:00:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:14,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:14,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:14,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:00:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:14,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:00:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:14,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 06:00:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:14,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:14,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:14,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:00:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:14,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:00:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:14,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 06:00:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:14,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:14,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:14,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:00:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:14,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:00:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:14,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 06:00:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:14,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:15,022 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-22 06:00:15,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991027722] [2020-08-22 06:00:15,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:00:15,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 06:00:15,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135141733] [2020-08-22 06:00:15,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 06:00:15,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:00:15,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 06:00:15,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-22 06:00:15,025 INFO L87 Difference]: Start difference. First operand 453 states and 568 transitions. Second operand 7 states. [2020-08-22 06:00:15,164 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-22 06:00:15,410 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-08-22 06:00:15,593 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-08-22 06:00:17,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:00:17,580 INFO L93 Difference]: Finished difference Result 553 states and 710 transitions. [2020-08-22 06:00:17,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 06:00:17,581 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-08-22 06:00:17,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:00:17,582 INFO L225 Difference]: With dead ends: 553 [2020-08-22 06:00:17,582 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 06:00:17,585 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 [2020-08-22 06:00:17,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 06:00:17,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 06:00:17,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 06:00:17,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 06:00:17,586 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 164 [2020-08-22 06:00:17,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:00:17,586 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 06:00:17,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 06:00:17,586 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 06:00:17,586 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 06:00:17,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 06:00:17,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 06:00:21,785 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 12 [2020-08-22 06:00:21,922 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-22 06:00:22,178 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-22 06:00:22,297 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 12 [2020-08-22 06:00:22,430 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 25 [2020-08-22 06:00:22,715 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 38