/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:14:50,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:14:50,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:14:50,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:14:50,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:14:50,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:14:50,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:14:50,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:14:50,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:14:50,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:14:50,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:14:50,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:14:50,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:14:50,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:14:50,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:14:50,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:14:50,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:14:50,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:14:50,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:14:50,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:14:50,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:14:50,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:14:50,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:14:50,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:14:50,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:14:50,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:14:50,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:14:50,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:14:50,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:14:50,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:14:50,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:14:50,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:14:50,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:14:50,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:14:50,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:14:50,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:14:50,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:14:50,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:14:50,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:14:50,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:14:50,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:14:50,616 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-21 16:14:50,640 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:14:50,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:14:50,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:14:50,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:14:50,642 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:14:50,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:14:50,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:14:50,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:14:50,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:14:50,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:14:50,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:14:50,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:14:50,644 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:14:50,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:14:50,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:14:50,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:14:50,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:14:50,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:14:50,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:14:50,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:14:50,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:14:50,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:14:50,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:14:50,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:14:50,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:14:50,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:14:50,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-21 16:14:50,647 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=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:14:50,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:14:50,968 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:14:50,975 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:14:50,978 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:14:50,978 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:14:50,979 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-21 16:14:51,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1afc07b04/282ef59ff2ce4dc3b9d43f76bc1d6af5/FLAG606fcdb32 [2020-08-21 16:14:51,721 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:14:51,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-21 16:14:51,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1afc07b04/282ef59ff2ce4dc3b9d43f76bc1d6af5/FLAG606fcdb32 [2020-08-21 16:14:51,897 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1afc07b04/282ef59ff2ce4dc3b9d43f76bc1d6af5 [2020-08-21 16:14:51,906 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:14:51,907 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:14:51,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:14:51,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:14:51,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:14:51,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:14:51" (1/1) ... [2020-08-21 16:14:51,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cdfb90f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:14:51, skipping insertion in model container [2020-08-21 16:14:51,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:14:51" (1/1) ... [2020-08-21 16:14:51,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:14:51,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:14:52,435 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1323] [2020-08-21 16:14:52,437 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1324-1325] [2020-08-21 16:14:52,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:14:52,740 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:14:52,846 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1323] [2020-08-21 16:14:52,847 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1324-1325] [2020-08-21 16:14:52,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:14:53,056 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:14:53,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:14:53 WrapperNode [2020-08-21 16:14:53,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:14:53,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:14:53,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:14:53,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:14:53,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:14:53" (1/1) ... [2020-08-21 16:14:53,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:14:53" (1/1) ... [2020-08-21 16:14:53,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:14:53" (1/1) ... [2020-08-21 16:14:53,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:14:53" (1/1) ... [2020-08-21 16:14:53,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:14:53" (1/1) ... [2020-08-21 16:14:53,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:14:53" (1/1) ... [2020-08-21 16:14:53,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:14:53" (1/1) ... [2020-08-21 16:14:53,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:14:53,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:14:53,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:14:53,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:14:53,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:14:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:14:53,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:14:53,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:14:53,276 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-08-21 16:14:53,276 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-21 16:14:53,276 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2020-08-21 16:14:53,276 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2020-08-21 16:14:53,277 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-21 16:14:53,277 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-21 16:14:53,277 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_name [2020-08-21 16:14:53,277 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 16:14:53,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-21 16:14:53,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-21 16:14:53,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-21 16:14:53,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-21 16:14:53,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-21 16:14:53,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-21 16:14:53,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-21 16:14:53,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-21 16:14:53,279 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2020-08-21 16:14:53,280 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_allocate_port [2020-08-21 16:14:53,280 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_free_port [2020-08-21 16:14:53,280 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_name [2020-08-21 16:14:53,280 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_valid [2020-08-21 16:14:53,280 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_len [2020-08-21 16:14:53,281 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_start [2020-08-21 16:14:53,281 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_valid [2020-08-21 16:14:53,281 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_len [2020-08-21 16:14:53,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_isa_probe [2020-08-21 16:14:53,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_pnp_probe [2020-08-21 16:14:53,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_init [2020-08-21 16:14:53,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ns558_exit [2020-08-21 16:14:53,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:14:53,282 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-21 16:14:53,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2020-08-21 16:14:53,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-21 16:14:53,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2020-08-21 16:14:53,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2020-08-21 16:14:53,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2020-08-21 16:14:53,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2020-08-21 16:14:53,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __gameport_register_port [2020-08-21 16:14:53,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-21 16:14:53,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-08-21 16:14:53,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-08-21 16:14:53,284 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_phys [2020-08-21 16:14:53,284 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_unregister_port [2020-08-21 16:14:53,284 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2020-08-21 16:14:53,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-21 16:14:53,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-21 16:14:53,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_1 [2020-08-21 16:14:53,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2020-08-21 16:14:53,285 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2020-08-21 16:14:53,285 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_get_resource [2020-08-21 16:14:53,286 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_register_driver [2020-08-21 16:14:53,286 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_unregister_driver [2020-08-21 16:14:53,286 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-21 16:14:53,286 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2020-08-21 16:14:53,286 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-21 16:14:53,287 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-21 16:14:53,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:14:53,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-21 16:14:53,287 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-21 16:14:53,287 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-21 16:14:53,287 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-08-21 16:14:53,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 16:14:53,288 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-21 16:14:53,288 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2020-08-21 16:14:53,288 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2020-08-21 16:14:53,288 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2020-08-21 16:14:53,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:14:53,289 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-08-21 16:14:53,289 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-08-21 16:14:53,289 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-21 16:14:53,289 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-21 16:14:53,289 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_name [2020-08-21 16:14:53,290 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-21 16:14:53,290 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2020-08-21 16:14:53,290 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-21 16:14:53,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2020-08-21 16:14:53,290 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 16:14:53,290 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 16:14:53,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:14:53,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-21 16:14:53,291 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 16:14:53,291 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 16:14:53,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-21 16:14:53,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 16:14:53,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-21 16:14:53,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-21 16:14:53,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-21 16:14:53,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-21 16:14:53,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-21 16:14:53,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-21 16:14:53,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-21 16:14:53,293 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2020-08-21 16:14:53,293 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2020-08-21 16:14:53,293 INFO L130 BoogieDeclarations]: Found specification of procedure __gameport_register_port [2020-08-21 16:14:53,293 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_unregister_port [2020-08-21 16:14:53,294 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_phys [2020-08-21 16:14:53,294 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_allocate_port [2020-08-21 16:14:53,294 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_free_port [2020-08-21 16:14:53,294 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_name [2020-08-21 16:14:53,294 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_get_resource [2020-08-21 16:14:53,294 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_valid [2020-08-21 16:14:53,295 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_len [2020-08-21 16:14:53,295 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_start [2020-08-21 16:14:53,295 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_valid [2020-08-21 16:14:53,295 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_len [2020-08-21 16:14:53,295 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_register_driver [2020-08-21 16:14:53,295 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_unregister_driver [2020-08-21 16:14:53,296 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_isa_probe [2020-08-21 16:14:53,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:14:53,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:14:53,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 16:14:53,296 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_pnp_probe [2020-08-21 16:14:53,296 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_init [2020-08-21 16:14:53,297 INFO L130 BoogieDeclarations]: Found specification of procedure ns558_exit [2020-08-21 16:14:53,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-21 16:14:53,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-21 16:14:53,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_1 [2020-08-21 16:14:53,297 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:14:53,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2020-08-21 16:14:53,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-21 16:14:53,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2020-08-21 16:14:53,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2020-08-21 16:14:53,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2020-08-21 16:14:53,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2020-08-21 16:14:53,299 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 16:14:53,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:14:53,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:14:53,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 16:14:53,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 16:14:53,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:14:53,882 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-21 16:14:54,449 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:14:54,449 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 16:14:54,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:14:54 BoogieIcfgContainer [2020-08-21 16:14:54,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:14:54,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:14:54,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:14:54,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:14:54,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:14:51" (1/3) ... [2020-08-21 16:14:54,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d90b4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:14:54, skipping insertion in model container [2020-08-21 16:14:54,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:14:53" (2/3) ... [2020-08-21 16:14:54,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d90b4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:14:54, skipping insertion in model container [2020-08-21 16:14:54,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:14:54" (3/3) ... [2020-08-21 16:14:54,464 INFO L109 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--gameport--ns558.ko-entry_point.cil.out.i [2020-08-21 16:14:54,474 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:14:54,483 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:14:54,498 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:14:54,526 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:14:54,526 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:14:54,526 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:14:54,526 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:14:54,527 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:14:54,527 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:14:54,527 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:14:54,527 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:14:54,554 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states. [2020-08-21 16:14:54,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-21 16:14:54,569 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:14:54,571 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:14:54,571 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:14:54,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:14:54,577 INFO L82 PathProgramCache]: Analyzing trace with hash -2083768503, now seen corresponding path program 1 times [2020-08-21 16:14:54,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:14:54,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560279541] [2020-08-21 16:14:54,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:14:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:14:55,412 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 16:14:55,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:14:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:14:55,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:14:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:14:55,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:14:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:14:55,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:14:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:14:55,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 16:14:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:14:55,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 16:14:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:14:55,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:14:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:14:55,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 16:14:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:14:55,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 16:14:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:14:55,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-21 16:14:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:14:55,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 16:14:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:14:55,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 16:14:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:14:55,609 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 16:14:55,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560279541] [2020-08-21 16:14:55,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:14:55,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 16:14:55,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490527932] [2020-08-21 16:14:55,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:14:55,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:14:55,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:14:55,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:14:55,641 INFO L87 Difference]: Start difference. First operand 348 states. Second operand 10 states. [2020-08-21 16:14:55,840 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-21 16:14:56,805 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-21 16:14:57,791 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-21 16:14:57,943 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-21 16:14:58,132 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-21 16:14:58,283 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-08-21 16:15:00,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:15:00,271 INFO L93 Difference]: Finished difference Result 815 states and 1118 transitions. [2020-08-21 16:15:00,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 16:15:00,273 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-08-21 16:15:00,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:15:00,292 INFO L225 Difference]: With dead ends: 815 [2020-08-21 16:15:00,292 INFO L226 Difference]: Without dead ends: 429 [2020-08-21 16:15:00,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-08-21 16:15:00,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-08-21 16:15:00,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 306. [2020-08-21 16:15:00,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-08-21 16:15:00,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 386 transitions. [2020-08-21 16:15:00,424 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 386 transitions. Word has length 91 [2020-08-21 16:15:00,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:15:00,425 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 386 transitions. [2020-08-21 16:15:00,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:15:00,425 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 386 transitions. [2020-08-21 16:15:00,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 16:15:00,431 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:15:00,431 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:15:00,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:15:00,432 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:15:00,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:15:00,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1314856814, now seen corresponding path program 1 times [2020-08-21 16:15:00,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:15:00,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266637024] [2020-08-21 16:15:00,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:15:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:00,680 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 16:15:00,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:15:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:00,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:15:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:00,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:15:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:00,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:15:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:00,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 16:15:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:00,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 16:15:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:00,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:00,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:15:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:00,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 16:15:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:00,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 16:15:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:00,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 16:15:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:00,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 16:15:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:00,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 16:15:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:00,795 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 16:15:00,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266637024] [2020-08-21 16:15:00,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:15:00,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 16:15:00,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039176226] [2020-08-21 16:15:00,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 16:15:00,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:15:00,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 16:15:00,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:15:00,799 INFO L87 Difference]: Start difference. First operand 306 states and 386 transitions. Second operand 6 states. [2020-08-21 16:15:00,959 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-21 16:15:03,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:15:03,519 INFO L93 Difference]: Finished difference Result 722 states and 963 transitions. [2020-08-21 16:15:03,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 16:15:03,519 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-08-21 16:15:03,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:15:03,528 INFO L225 Difference]: With dead ends: 722 [2020-08-21 16:15:03,528 INFO L226 Difference]: Without dead ends: 441 [2020-08-21 16:15:03,531 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 [2020-08-21 16:15:03,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-08-21 16:15:03,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 308. [2020-08-21 16:15:03,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-08-21 16:15:03,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 388 transitions. [2020-08-21 16:15:03,615 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 388 transitions. Word has length 97 [2020-08-21 16:15:03,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:15:03,616 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 388 transitions. [2020-08-21 16:15:03,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 16:15:03,616 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 388 transitions. [2020-08-21 16:15:03,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-08-21 16:15:03,622 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:15:03,622 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:15:03,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:15:03,622 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:15:03,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:15:03,623 INFO L82 PathProgramCache]: Analyzing trace with hash -492581383, now seen corresponding path program 1 times [2020-08-21 16:15:03,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:15:03,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591577509] [2020-08-21 16:15:03,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:15:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:03,862 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 16:15:03,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:15:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:03,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:15:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:03,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:15:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:03,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:15:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:03,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:15:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:03,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:03,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:03,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:15:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:03,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 16:15:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:03,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:03,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:03,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:15:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:03,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 16:15:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:03,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:03,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:03,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:15:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:03,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 16:15:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:03,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:04,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:15:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:04,029 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-21 16:15:04,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591577509] [2020-08-21 16:15:04,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:15:04,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 16:15:04,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684950182] [2020-08-21 16:15:04,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 16:15:04,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:15:04,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 16:15:04,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:15:04,032 INFO L87 Difference]: Start difference. First operand 308 states and 388 transitions. Second operand 6 states. [2020-08-21 16:15:04,163 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-21 16:15:04,394 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-08-21 16:15:04,557 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-08-21 16:15:07,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:15:07,964 INFO L93 Difference]: Finished difference Result 945 states and 1246 transitions. [2020-08-21 16:15:07,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 16:15:07,965 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-08-21 16:15:07,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:15:07,971 INFO L225 Difference]: With dead ends: 945 [2020-08-21 16:15:07,971 INFO L226 Difference]: Without dead ends: 662 [2020-08-21 16:15:07,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-21 16:15:07,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2020-08-21 16:15:08,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 489. [2020-08-21 16:15:08,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-08-21 16:15:08,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 617 transitions. [2020-08-21 16:15:08,048 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 617 transitions. Word has length 123 [2020-08-21 16:15:08,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:15:08,050 INFO L479 AbstractCegarLoop]: Abstraction has 489 states and 617 transitions. [2020-08-21 16:15:08,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 16:15:08,050 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 617 transitions. [2020-08-21 16:15:08,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-08-21 16:15:08,058 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:15:08,058 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:15:08,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:15:08,058 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:15:08,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:15:08,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1067393612, now seen corresponding path program 1 times [2020-08-21 16:15:08,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:15:08,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235548215] [2020-08-21 16:15:08,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:15:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:08,375 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 16:15:08,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:15:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:08,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:15:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:08,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:15:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:08,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:15:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:08,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 16:15:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:08,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 16:15:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:08,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:08,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:15:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:08,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 16:15:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:08,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 16:15:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:08,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 16:15:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:08,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 16:15:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:08,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 16:15:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:08,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 16:15:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:08,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 16:15:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:08,487 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-08-21 16:15:08,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235548215] [2020-08-21 16:15:08,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:15:08,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 16:15:08,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63608560] [2020-08-21 16:15:08,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 16:15:08,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:15:08,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 16:15:08,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:15:08,490 INFO L87 Difference]: Start difference. First operand 489 states and 617 transitions. Second operand 7 states. [2020-08-21 16:15:08,625 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-21 16:15:11,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:15:11,465 INFO L93 Difference]: Finished difference Result 1237 states and 1674 transitions. [2020-08-21 16:15:11,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 16:15:11,466 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-08-21 16:15:11,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:15:11,474 INFO L225 Difference]: With dead ends: 1237 [2020-08-21 16:15:11,475 INFO L226 Difference]: Without dead ends: 773 [2020-08-21 16:15:11,477 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 [2020-08-21 16:15:11,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-08-21 16:15:11,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 541. [2020-08-21 16:15:11,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2020-08-21 16:15:11,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 699 transitions. [2020-08-21 16:15:11,560 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 699 transitions. Word has length 110 [2020-08-21 16:15:11,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:15:11,561 INFO L479 AbstractCegarLoop]: Abstraction has 541 states and 699 transitions. [2020-08-21 16:15:11,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 16:15:11,561 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 699 transitions. [2020-08-21 16:15:11,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-21 16:15:11,566 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:15:11,566 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:15:11,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:15:11,567 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:15:11,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:15:11,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1281815870, now seen corresponding path program 1 times [2020-08-21 16:15:11,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:15:11,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099468320] [2020-08-21 16:15:11,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:15:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:11,793 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 16:15:11,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:15:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:11,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:15:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:11,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:15:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:11,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:15:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:11,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:15:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:11,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:11,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 16:15:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:11,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:11,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:11,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:15:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:11,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 16:15:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:11,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:11,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:11,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:15:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:12,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 16:15:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:12,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:12,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:12,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:15:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:12,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 16:15:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:12,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:12,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:15:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:12,111 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-21 16:15:12,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099468320] [2020-08-21 16:15:12,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:15:12,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:15:12,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733433568] [2020-08-21 16:15:12,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:15:12,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:15:12,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:15:12,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:15:12,119 INFO L87 Difference]: Start difference. First operand 541 states and 699 transitions. Second operand 9 states. [2020-08-21 16:15:12,276 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-21 16:15:12,870 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-08-21 16:15:15,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:15:15,358 INFO L93 Difference]: Finished difference Result 1246 states and 1663 transitions. [2020-08-21 16:15:15,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 16:15:15,359 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 143 [2020-08-21 16:15:15,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:15:15,366 INFO L225 Difference]: With dead ends: 1246 [2020-08-21 16:15:15,366 INFO L226 Difference]: Without dead ends: 708 [2020-08-21 16:15:15,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-08-21 16:15:15,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-08-21 16:15:15,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 538. [2020-08-21 16:15:15,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-08-21 16:15:15,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 692 transitions. [2020-08-21 16:15:15,425 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 692 transitions. Word has length 143 [2020-08-21 16:15:15,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:15:15,426 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 692 transitions. [2020-08-21 16:15:15,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:15:15,427 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 692 transitions. [2020-08-21 16:15:15,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 16:15:15,430 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:15:15,430 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:15:15,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 16:15:15,431 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:15:15,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:15:15,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1536881969, now seen corresponding path program 1 times [2020-08-21 16:15:15,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:15:15,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274361856] [2020-08-21 16:15:15,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:15:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:15,654 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 16:15:15,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:15:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:15,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:15:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:15,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:15:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:15,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:15:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:15,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:15:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:15,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:15,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:15:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:15,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 16:15:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:15,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:15,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:15,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:15:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:15,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 16:15:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:15,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:15,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:15,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:15:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:15,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 16:15:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:15,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:15,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:15,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:15:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:15,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-21 16:15:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:15,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:15,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:15:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:15,900 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-21 16:15:15,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274361856] [2020-08-21 16:15:15,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:15:15,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 16:15:15,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278229643] [2020-08-21 16:15:15,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:15:15,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:15:15,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:15:15,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:15:15,903 INFO L87 Difference]: Start difference. First operand 538 states and 692 transitions. Second operand 10 states. [2020-08-21 16:15:16,029 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-21 16:15:16,698 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 16:15:16,856 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 16:15:19,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:15:19,487 INFO L93 Difference]: Finished difference Result 1233 states and 1636 transitions. [2020-08-21 16:15:19,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 16:15:19,488 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-08-21 16:15:19,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:15:19,493 INFO L225 Difference]: With dead ends: 1233 [2020-08-21 16:15:19,493 INFO L226 Difference]: Without dead ends: 702 [2020-08-21 16:15:19,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-08-21 16:15:19,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2020-08-21 16:15:19,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 538. [2020-08-21 16:15:19,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-08-21 16:15:19,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 690 transitions. [2020-08-21 16:15:19,556 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 690 transitions. Word has length 152 [2020-08-21 16:15:19,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:15:19,556 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 690 transitions. [2020-08-21 16:15:19,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:15:19,556 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 690 transitions. [2020-08-21 16:15:19,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-21 16:15:19,559 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:15:19,560 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:15:19,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 16:15:19,560 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:15:19,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:15:19,560 INFO L82 PathProgramCache]: Analyzing trace with hash -968590774, now seen corresponding path program 1 times [2020-08-21 16:15:19,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:15:19,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109168507] [2020-08-21 16:15:19,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:15:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:19,814 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 16:15:19,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:15:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:19,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:15:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:19,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:15:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:19,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:15:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:19,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:15:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:19,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:19,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:15:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:19,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 16:15:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:19,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:19,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:19,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:15:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:20,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 16:15:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:20,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:20,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:20,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:15:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:20,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 16:15:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:20,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:20,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:20,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:15:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:20,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-21 16:15:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:20,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-08-21 16:15:20,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109168507] [2020-08-21 16:15:20,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:15:20,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 16:15:20,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176528615] [2020-08-21 16:15:20,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 16:15:20,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:15:20,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 16:15:20,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-08-21 16:15:20,181 INFO L87 Difference]: Start difference. First operand 538 states and 690 transitions. Second operand 13 states. [2020-08-21 16:15:20,319 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-21 16:15:21,074 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 16:15:21,478 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 16:15:21,642 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 16:15:21,816 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 16:15:21,978 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-08-21 16:15:22,159 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-08-21 16:15:22,356 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-08-21 16:15:24,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:15:24,188 INFO L93 Difference]: Finished difference Result 1217 states and 1615 transitions. [2020-08-21 16:15:24,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 16:15:24,189 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 146 [2020-08-21 16:15:24,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:15:24,196 INFO L225 Difference]: With dead ends: 1217 [2020-08-21 16:15:24,196 INFO L226 Difference]: Without dead ends: 704 [2020-08-21 16:15:24,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-08-21 16:15:24,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-08-21 16:15:24,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 545. [2020-08-21 16:15:24,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-08-21 16:15:24,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 702 transitions. [2020-08-21 16:15:24,254 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 702 transitions. Word has length 146 [2020-08-21 16:15:24,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:15:24,255 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 702 transitions. [2020-08-21 16:15:24,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 16:15:24,256 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 702 transitions. [2020-08-21 16:15:24,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-21 16:15:24,258 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:15:24,259 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:15:24,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 16:15:24,259 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:15:24,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:15:24,259 INFO L82 PathProgramCache]: Analyzing trace with hash 948696336, now seen corresponding path program 1 times [2020-08-21 16:15:24,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:15:24,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216280448] [2020-08-21 16:15:24,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:15:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:24,482 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 16:15:24,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:15:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:24,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:15:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:24,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:15:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:24,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:15:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:24,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:15:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:24,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:24,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:15:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:24,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 16:15:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:24,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:24,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:24,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:15:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:24,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 16:15:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:24,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:24,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:24,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:15:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:24,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:15:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:24,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-21 16:15:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:24,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:24,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:24,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:15:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:24,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:15:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:24,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-21 16:15:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:24,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:24,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:15:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-21 16:15:24,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216280448] [2020-08-21 16:15:24,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:15:24,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 16:15:24,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967779953] [2020-08-21 16:15:24,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 16:15:24,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:15:24,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 16:15:24,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-21 16:15:24,850 INFO L87 Difference]: Start difference. First operand 545 states and 702 transitions. Second operand 11 states. [2020-08-21 16:15:25,056 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-21 16:15:26,396 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-08-21 16:15:26,588 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 16:15:26,759 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 16:15:26,945 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 16:15:27,116 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 16:15:28,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:15:28,960 INFO L93 Difference]: Finished difference Result 1168 states and 1528 transitions. [2020-08-21 16:15:28,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 16:15:28,961 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 164 [2020-08-21 16:15:28,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:15:28,965 INFO L225 Difference]: With dead ends: 1168 [2020-08-21 16:15:28,965 INFO L226 Difference]: Without dead ends: 648 [2020-08-21 16:15:28,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-08-21 16:15:28,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-08-21 16:15:29,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 550. [2020-08-21 16:15:29,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-08-21 16:15:29,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 707 transitions. [2020-08-21 16:15:29,014 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 707 transitions. Word has length 164 [2020-08-21 16:15:29,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:15:29,014 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 707 transitions. [2020-08-21 16:15:29,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 16:15:29,014 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 707 transitions. [2020-08-21 16:15:29,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 16:15:29,017 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:15:29,017 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:15:29,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 16:15:29,018 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:15:29,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:15:29,018 INFO L82 PathProgramCache]: Analyzing trace with hash 925896005, now seen corresponding path program 1 times [2020-08-21 16:15:29,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:15:29,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354600130] [2020-08-21 16:15:29,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:15:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:29,261 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 16:15:29,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:15:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:29,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:15:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:29,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:15:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:29,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:15:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:29,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:15:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:29,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:29,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:15:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:29,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 16:15:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:29,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:29,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:29,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:15:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:29,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:15:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:29,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 16:15:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:29,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:29,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:29,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:15:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:29,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-21 16:15:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:29,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:29,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:29,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:15:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:29,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-21 16:15:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:29,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:29,512 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-08-21 16:15:29,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354600130] [2020-08-21 16:15:29,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:15:29,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 16:15:29,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12500798] [2020-08-21 16:15:29,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:15:29,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:15:29,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:15:29,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:15:29,515 INFO L87 Difference]: Start difference. First operand 550 states and 707 transitions. Second operand 10 states. [2020-08-21 16:15:29,649 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-21 16:15:30,167 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-08-21 16:15:30,888 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 16:15:31,568 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 16:15:31,740 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-08-21 16:15:32,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:15:32,675 INFO L93 Difference]: Finished difference Result 1271 states and 1638 transitions. [2020-08-21 16:15:32,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 16:15:32,676 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-08-21 16:15:32,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:15:32,680 INFO L225 Difference]: With dead ends: 1271 [2020-08-21 16:15:32,681 INFO L226 Difference]: Without dead ends: 746 [2020-08-21 16:15:32,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-08-21 16:15:32,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2020-08-21 16:15:32,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 430. [2020-08-21 16:15:32,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-08-21 16:15:32,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 531 transitions. [2020-08-21 16:15:32,727 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 531 transitions. Word has length 152 [2020-08-21 16:15:32,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:15:32,728 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 531 transitions. [2020-08-21 16:15:32,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:15:32,728 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 531 transitions. [2020-08-21 16:15:32,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-21 16:15:32,730 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:15:32,731 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:15:32,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 16:15:32,731 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:15:32,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:15:32,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1391356121, now seen corresponding path program 1 times [2020-08-21 16:15:32,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:15:32,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228444235] [2020-08-21 16:15:32,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:15:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:32,956 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 16:15:32,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:15:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:32,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:15:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:33,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:15:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:33,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:15:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:33,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 16:15:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:33,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 16:15:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:33,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:33,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:15:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:33,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 16:15:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:33,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 16:15:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:33,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 16:15:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:33,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 16:15:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:33,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 16:15:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:33,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 16:15:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:33,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 16:15:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:33,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 16:15:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:33,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 16:15:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:33,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 16:15:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:33,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 16:15:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:33,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:33,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-21 16:15:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:33,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:33,105 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-08-21 16:15:33,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228444235] [2020-08-21 16:15:33,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:15:33,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 16:15:33,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541904932] [2020-08-21 16:15:33,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 16:15:33,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:15:33,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 16:15:33,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:15:33,107 INFO L87 Difference]: Start difference. First operand 430 states and 531 transitions. Second operand 8 states. [2020-08-21 16:15:33,246 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-08-21 16:15:36,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:15:36,707 INFO L93 Difference]: Finished difference Result 980 states and 1265 transitions. [2020-08-21 16:15:36,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 16:15:36,708 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 151 [2020-08-21 16:15:36,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:15:36,711 INFO L225 Difference]: With dead ends: 980 [2020-08-21 16:15:36,712 INFO L226 Difference]: Without dead ends: 592 [2020-08-21 16:15:36,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:15:36,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-08-21 16:15:36,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 453. [2020-08-21 16:15:36,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-08-21 16:15:36,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 568 transitions. [2020-08-21 16:15:36,758 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 568 transitions. Word has length 151 [2020-08-21 16:15:36,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:15:36,759 INFO L479 AbstractCegarLoop]: Abstraction has 453 states and 568 transitions. [2020-08-21 16:15:36,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 16:15:36,759 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 568 transitions. [2020-08-21 16:15:36,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-21 16:15:36,761 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:15:36,761 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:15:36,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 16:15:36,762 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:15:36,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:15:36,762 INFO L82 PathProgramCache]: Analyzing trace with hash -642852378, now seen corresponding path program 2 times [2020-08-21 16:15:36,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:15:36,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212663114] [2020-08-21 16:15:36,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:15:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:36,993 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 16:15:36,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:15:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:37,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:15:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:37,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:15:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:37,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:15:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:37,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:15:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:37,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:37,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:15:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:37,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 16:15:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:37,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:37,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:37,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:15:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:37,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:15:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:37,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 16:15:37,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:37,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:37,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:37,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:15:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:37,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:15:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:37,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 16:15:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:37,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:37,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:37,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:15:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:37,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:15:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:37,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 16:15:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:37,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:15:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:37,269 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-21 16:15:37,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212663114] [2020-08-21 16:15:37,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:15:37,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 16:15:37,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715095314] [2020-08-21 16:15:37,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 16:15:37,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:15:37,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 16:15:37,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:15:37,271 INFO L87 Difference]: Start difference. First operand 453 states and 568 transitions. Second operand 7 states. [2020-08-21 16:15:37,411 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-08-21 16:15:37,681 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-08-21 16:15:37,898 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-08-21 16:15:39,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:15:39,842 INFO L93 Difference]: Finished difference Result 553 states and 710 transitions. [2020-08-21 16:15:39,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 16:15:39,843 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-08-21 16:15:39,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:15:39,844 INFO L225 Difference]: With dead ends: 553 [2020-08-21 16:15:39,844 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 16:15:39,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-21 16:15:39,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 16:15:39,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 16:15:39,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 16:15:39,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 16:15:39,848 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 164 [2020-08-21 16:15:39,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:15:39,848 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 16:15:39,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 16:15:39,849 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 16:15:39,849 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 16:15:39,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 16:15:39,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.