/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 13:50:27,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 13:50:27,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 13:50:28,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 13:50:28,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 13:50:28,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 13:50:28,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 13:50:28,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 13:50:28,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 13:50:28,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 13:50:28,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 13:50:28,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 13:50:28,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 13:50:28,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 13:50:28,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 13:50:28,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 13:50:28,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 13:50:28,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 13:50:28,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 13:50:28,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 13:50:28,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 13:50:28,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 13:50:28,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 13:50:28,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 13:50:28,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 13:50:28,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 13:50:28,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 13:50:28,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 13:50:28,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 13:50:28,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 13:50:28,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 13:50:28,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 13:50:28,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 13:50:28,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 13:50:28,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 13:50:28,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 13:50:28,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 13:50:28,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 13:50:28,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 13:50:28,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 13:50:28,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 13:50:28,048 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 [2020-10-27 13:50:28,105 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 13:50:28,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 13:50:28,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 13:50:28,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 13:50:28,108 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 13:50:28,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 13:50:28,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 13:50:28,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 13:50:28,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 13:50:28,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 13:50:28,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 13:50:28,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 13:50:28,109 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 13:50:28,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 13:50:28,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 13:50:28,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 13:50:28,110 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 13:50:28,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 13:50:28,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 13:50:28,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 13:50:28,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 13:50:28,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 13:50:28,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 13:50:28,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 13:50:28,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 13:50:28,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 13:50:28,113 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-27 13:50:28,113 INFO L138 SettingsManager]: * To the following directory=dump/ WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 13:50:28,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 13:50:28,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 13:50:28,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 13:50:28,515 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 13:50:28,516 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 13:50:28,517 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-10-27 13:50:28,610 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9922d3d9b/d6264e2790c14bb1a007fa65025d648a/FLAG705649b89 [2020-10-27 13:50:29,714 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 13:50:29,716 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-10-27 13:50:29,758 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9922d3d9b/d6264e2790c14bb1a007fa65025d648a/FLAG705649b89 [2020-10-27 13:50:30,155 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9922d3d9b/d6264e2790c14bb1a007fa65025d648a [2020-10-27 13:50:30,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 13:50:30,166 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 13:50:30,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 13:50:30,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 13:50:30,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 13:50:30,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:50:30" (1/1) ... [2020-10-27 13:50:30,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78333f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:50:30, skipping insertion in model container [2020-10-27 13:50:30,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:50:30" (1/1) ... [2020-10-27 13:50:30,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 13:50:30,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 13:50:31,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 13:50:31,290 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 13:50:31,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 13:50:31,843 INFO L208 MainTranslator]: Completed translation [2020-10-27 13:50:31,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:50:31 WrapperNode [2020-10-27 13:50:31,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 13:50:31,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 13:50:31,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 13:50:31,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 13:50:31,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:50:31" (1/1) ... [2020-10-27 13:50:31,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:50:31" (1/1) ... [2020-10-27 13:50:31,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:50:31" (1/1) ... [2020-10-27 13:50:31,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:50:31" (1/1) ... [2020-10-27 13:50:32,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:50:31" (1/1) ... [2020-10-27 13:50:32,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:50:31" (1/1) ... [2020-10-27 13:50:32,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:50:31" (1/1) ... [2020-10-27 13:50:32,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 13:50:32,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 13:50:32,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 13:50:32,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 13:50:32,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:50:31" (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 [2020-10-27 13:50:32,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 13:50:32,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 13:50:32,221 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 13:50:32,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_insert_flip_string_4 [2020-10-27 13:50:32,222 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-10-27 13:50:32,222 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-10-27 13:50:32,222 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-10-27 13:50:32,222 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 13:50:32,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-10-27 13:50:32,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-10-27 13:50:32,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2020-10-27 13:50:32,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2020-10-27 13:50:32,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-10-27 13:50:32,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-10-27 13:50:32,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-10-27 13:50:32,224 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2020-10-27 13:50:32,224 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2020-10-27 13:50:32,224 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2020-10-27 13:50:32,224 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2020-10-27 13:50:32,224 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_out [2020-10-27 13:50:32,225 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2020-10-27 13:50:32,225 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2020-10-27 13:50:32,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2020-10-27 13:50:32,225 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2020-10-27 13:50:32,225 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2020-10-27 13:50:32,226 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2020-10-27 13:50:32,226 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_startup [2020-10-27 13:50:32,226 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_release [2020-10-27 13:50:32,226 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_init_termios [2020-10-27 13:50:32,226 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_open [2020-10-27 13:50:32,226 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_close [2020-10-27 13:50:32,227 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_read_int_callback [2020-10-27 13:50:32,227 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_write_callback [2020-10-27 13:50:32,227 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_write [2020-10-27 13:50:32,227 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_write_room [2020-10-27 13:50:32,227 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_tiocmget [2020-10-27 13:50:32,228 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_tiocmset [2020-10-27 13:50:32,228 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_set_termios [2020-10-27 13:50:32,228 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_ioctl [2020-10-27 13:50:32,228 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_init [2020-10-27 13:50:32,228 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_exit [2020-10-27 13:50:32,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_usb_serial_driver_1 [2020-10-27 13:50:32,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_2 [2020-10-27 13:50:32,229 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 13:50:32,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_insert_flip_string_flags_3 [2020-10-27 13:50:32,229 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string [2020-10-27 13:50:32,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_insert_flip_string_fixed_flag_5 [2020-10-27 13:50:32,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_6 [2020-10-27 13:50:32,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_port_tty_get_7 [2020-10-27 13:50:32,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_flip_buffer_push_8 [2020-10-27 13:50:32,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_get_baud_rate_9 [2020-10-27 13:50:32,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_encode_baud_rate_10 [2020-10-27 13:50:32,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_11 [2020-10-27 13:50:32,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-10-27 13:50:32,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-10-27 13:50:32,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2020-10-27 13:50:32,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_got_tty [2020-10-27 13:50:32,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_tty [2020-10-27 13:50:32,231 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-10-27 13:50:32,232 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2020-10-27 13:50:32,232 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-10-27 13:50:32,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-10-27 13:50:32,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_1 [2020-10-27 13:50:32,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_1 [2020-10-27 13:50:32,233 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2020-10-27 13:50:32,233 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-10-27 13:50:32,233 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_encode_baud_rate [2020-10-27 13:50:32,233 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_flip_buffer_push [2020-10-27 13:50:32,233 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_get_baud_rate [2020-10-27 13:50:32,234 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string_fixed_flag [2020-10-27 13:50:32,234 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string_flags [2020-10-27 13:50:32,234 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2020-10-27 13:50:32,234 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get [2020-10-27 13:50:32,234 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2020-10-27 13:50:32,235 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2020-10-27 13:50:32,235 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-10-27 13:50:32,235 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2020-10-27 13:50:32,235 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2020-10-27 13:50:32,235 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2020-10-27 13:50:32,235 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-10-27 13:50:32,236 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2020-10-27 13:50:32,236 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2020-10-27 13:50:32,236 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2020-10-27 13:50:32,236 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2020-10-27 13:50:32,236 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2020-10-27 13:50:32,236 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-10-27 13:50:32,237 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-10-27 13:50:32,237 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-27 13:50:32,237 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-27 13:50:32,237 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 13:50:32,237 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 13:50:32,238 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 13:50:32,238 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 13:50:32,238 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 13:50:32,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 13:50:32,238 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-10-27 13:50:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-10-27 13:50:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2020-10-27 13:50:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2020-10-27 13:50:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure tty_flip_buffer_push [2020-10-27 13:50:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_flip_buffer_push_8 [2020-10-27 13:50:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure tty_get_baud_rate [2020-10-27 13:50:32,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_get_baud_rate_9 [2020-10-27 13:50:32,240 INFO L130 BoogieDeclarations]: Found specification of procedure tty_encode_baud_rate [2020-10-27 13:50:32,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_encode_baud_rate_10 [2020-10-27 13:50:32,240 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get [2020-10-27 13:50:32,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_port_tty_get_7 [2020-10-27 13:50:32,240 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string_flags [2020-10-27 13:50:32,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_insert_flip_string_flags_3 [2020-10-27 13:50:32,241 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string_fixed_flag [2020-10-27 13:50:32,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_insert_flip_string_fixed_flag_5 [2020-10-27 13:50:32,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_insert_flip_string_4 [2020-10-27 13:50:32,241 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string [2020-10-27 13:50:32,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_got_tty [2020-10-27 13:50:32,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_tty [2020-10-27 13:50:32,242 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-10-27 13:50:32,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-10-27 13:50:32,242 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-10-27 13:50:32,242 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-10-27 13:50:32,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-10-27 13:50:32,243 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-10-27 13:50:32,243 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 13:50:32,243 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 13:50:32,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 13:50:32,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-27 13:50:32,244 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 13:50:32,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 13:50:32,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-27 13:50:32,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2020-10-27 13:50:32,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2020-10-27 13:50:32,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-10-27 13:50:32,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-10-27 13:50:32,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-10-27 13:50:32,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-10-27 13:50:32,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_usb_serial_driver_1 [2020-10-27 13:50:32,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_2 [2020-10-27 13:50:32,245 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2020-10-27 13:50:32,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 13:50:32,246 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2020-10-27 13:50:32,246 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2020-10-27 13:50:32,246 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2020-10-27 13:50:32,246 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_out [2020-10-27 13:50:32,247 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-10-27 13:50:32,247 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-10-27 13:50:32,247 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2020-10-27 13:50:32,247 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-10-27 13:50:32,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_6 [2020-10-27 13:50:32,247 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2020-10-27 13:50:32,248 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-10-27 13:50:32,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_11 [2020-10-27 13:50:32,248 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2020-10-27 13:50:32,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 13:50:32,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 13:50:32,248 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2020-10-27 13:50:32,249 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2020-10-27 13:50:32,249 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2020-10-27 13:50:32,249 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2020-10-27 13:50:32,249 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2020-10-27 13:50:32,249 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2020-10-27 13:50:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2020-10-27 13:50:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2020-10-27 13:50:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2020-10-27 13:50:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2020-10-27 13:50:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2020-10-27 13:50:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2020-10-27 13:50:32,251 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2020-10-27 13:50:32,251 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2020-10-27 13:50:32,251 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_startup [2020-10-27 13:50:32,251 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_release [2020-10-27 13:50:32,251 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_open [2020-10-27 13:50:32,251 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_close [2020-10-27 13:50:32,251 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_write [2020-10-27 13:50:32,252 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_write_room [2020-10-27 13:50:32,252 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_ioctl [2020-10-27 13:50:32,252 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_tiocmget [2020-10-27 13:50:32,252 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_tiocmset [2020-10-27 13:50:32,252 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_read_int_callback [2020-10-27 13:50:32,252 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_write_callback [2020-10-27 13:50:32,253 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_set_termios [2020-10-27 13:50:32,253 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_init_termios [2020-10-27 13:50:32,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 13:50:32,253 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-27 13:50:32,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-27 13:50:32,253 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_init [2020-10-27 13:50:32,253 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_exit [2020-10-27 13:50:32,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_1 [2020-10-27 13:50:32,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_1 [2020-10-27 13:50:32,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-10-27 13:50:32,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-10-27 13:50:32,254 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 13:50:32,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 13:50:32,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-10-27 13:50:32,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2020-10-27 13:50:32,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-27 13:50:32,255 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 13:50:32,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 13:50:32,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 13:50:32,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-27 13:50:32,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 13:50:32,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-27 13:50:32,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-27 13:50:32,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-27 13:50:32,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-27 13:50:33,444 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-10-27 13:50:40,828 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 13:50:40,828 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 13:50:40,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:50:40 BoogieIcfgContainer [2020-10-27 13:50:40,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 13:50:40,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 13:50:40,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 13:50:40,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 13:50:40,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:50:30" (1/3) ... [2020-10-27 13:50:40,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f497374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:50:40, skipping insertion in model container [2020-10-27 13:50:40,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:50:31" (2/3) ... [2020-10-27 13:50:40,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f497374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:50:40, skipping insertion in model container [2020-10-27 13:50:40,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:50:40" (3/3) ... [2020-10-27 13:50:40,850 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-10-27 13:50:40,863 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 13:50:40,872 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 13:50:40,885 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 13:50:40,930 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 13:50:40,930 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 13:50:40,931 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 13:50:40,931 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 13:50:40,931 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 13:50:40,932 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 13:50:40,932 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 13:50:40,932 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 13:50:40,978 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states. [2020-10-27 13:50:41,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-27 13:50:41,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 13:50:41,016 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 13:50:41,017 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 13:50:41,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 13:50:41,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1881843185, now seen corresponding path program 1 times [2020-10-27 13:50:41,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 13:50:41,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361337390] [2020-10-27 13:50:41,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 13:50:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:42,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:42,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:42,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:43,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:43,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:45,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:47,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:47,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 13:50:47,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 13:50:47,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5465 [2020-10-27 13:50:47,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:47,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 13:50:47,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 13:50:47,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 13:50:47,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 13:50:50,848 WARN L193 SmtUtils]: Spent 3.31 s on a formula simplification that was a NOOP. DAG size: 724 [2020-10-27 13:50:50,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 13:50:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:50,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:51,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:51,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 13:50:51,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:50:51,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-27 13:50:51,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:51,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:50:51,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:50:51,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:50:51,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:51,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 13:50:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:51,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:51,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:51,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 13:50:51,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:50:51,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 13:50:51,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:51,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:50:51,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:50:51,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:50:51,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:51,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 13:50:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:51,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:51,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:51,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 13:50:51,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:50:51,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 13:50:51,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:51,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:50:51,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:50:51,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:50:51,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:51,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 13:50:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:51,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:51,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:51,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 13:50:51,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:50:51,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 13:50:51,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:51,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:50:51,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:50:51,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:50:51,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:51,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 13:50:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:51,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:51,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:51,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 13:50:51,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:50:51,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 13:50:51,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:51,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 13:50:51,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:50:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 13:50:51,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:51,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 13:50:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:51,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:51,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:51,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 13:50:51,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:50:51,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 13:50:51,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:51,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 13:50:51,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 13:50:51,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 13:50:51,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:51,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 13:50:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:51,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:51,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:51,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 13:50:51,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:50:51,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 13:50:51,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:51,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:50:51,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 13:50:51,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:50:51,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:51,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 13:50:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:51,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:51,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:51,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 13:50:51,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:50:51,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 13:50:51,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:51,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:50:51,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:50:51,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:50:51,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:51,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 13:50:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:51,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:51,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:51,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 13:50:51,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:50:51,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 13:50:51,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:51,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:50:51,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:50:51,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:50:51,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:51,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 13:50:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:51,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:52,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:52,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 13:50:52,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:50:52,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 13:50:52,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:52,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:50:52,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 13:50:52,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:50:52,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:52,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 13:50:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:52,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:52,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:52,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 13:50:52,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:50:52,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 13:50:52,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:52,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:50:52,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:50:52,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:50:52,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:52,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 13:50:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:52,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:52,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:52,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 13:50:52,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:50:52,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 13:50:52,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:52,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:50:52,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:50:52,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:50:52,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 13:50:52,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 13:50:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:52,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:52,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:52,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:52,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 13:50:52,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 13:50:52,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 13:50:52,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:52,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 13:50:52,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 13:50:52,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 13:50:52,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:52,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 13:50:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:52,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:52,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:52,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 13:50:52,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:50:52,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 13:50:52,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:52,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 13:50:52,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:50:52,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 13:50:52,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:52,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 13:50:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:52,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:52,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:52,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:52,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 13:50:52,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 13:50:52,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 13:50:52,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:52,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 13:50:52,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 13:50:52,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 13:50:52,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:52,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 13:50:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:52,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:52,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:52,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 13:50:52,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:50:52,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 13:50:52,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:52,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 13:50:52,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:50:52,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 13:50:52,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:52,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 13:50:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:52,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:52,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:52,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:52,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 13:50:52,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 13:50:52,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 13:50:52,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:52,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 13:50:52,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 13:50:52,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 13:50:52,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:52,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 13:50:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:52,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:53,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:53,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 13:50:53,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:50:53,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 13:50:53,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:53,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 13:50:53,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:50:53,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 13:50:53,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:53,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 13:50:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:53,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:53,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:53,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:53,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 13:50:53,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 13:50:53,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 13:50:53,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:53,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 13:50:53,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 13:50:53,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 13:50:53,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:53,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 13:50:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:53,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:53,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:53,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 13:50:53,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:50:53,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 13:50:53,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 13:50:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:50:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 13:50:53,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:53,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 13:50:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:53,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:53,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:53,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:53,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 13:50:53,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 13:50:53,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 13:50:53,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:53,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 13:50:53,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 13:50:53,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 13:50:53,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:53,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 13:50:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:53,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:53,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:53,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 13:50:53,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:50:53,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 13:50:53,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:53,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 13:50:53,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:50:53,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 13:50:53,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:53,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-27 13:50:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:53,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:53,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:53,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:53,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 13:50:53,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 13:50:53,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 13:50:53,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:53,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 13:50:53,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 13:50:53,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 13:50:53,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:53,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 13:50:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:53,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:53,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:53,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 13:50:53,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:50:53,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 13:50:53,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 13:50:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:50:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 13:50:53,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:53,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-27 13:50:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:53,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:53,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:53,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 13:50:53,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:50:53,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 13:50:53,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:53,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:50:53,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 13:50:53,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:50:53,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:53,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 13:50:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:53,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:53,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:53,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 13:50:53,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:50:53,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 13:50:53,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:53,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:50:53,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:50:53,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:50:53,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:53,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 13:50:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:50:53,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:50:53,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:50:53,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 13:50:53,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:50:53,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 13:50:53,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:50:53,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:50:53,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:50:53,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:50:53,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:50:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-27 13:50:53,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361337390] [2020-10-27 13:50:53,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 13:50:53,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 13:50:53,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025132534] [2020-10-27 13:50:53,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 13:50:53,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 13:50:53,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 13:50:53,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-10-27 13:50:53,949 INFO L87 Difference]: Start difference. First operand 791 states. Second operand 23 states. [2020-10-27 13:50:57,585 WARN L193 SmtUtils]: Spent 3.47 s on a formula simplification that was a NOOP. DAG size: 733 [2020-10-27 13:51:24,089 WARN L193 SmtUtils]: Spent 3.85 s on a formula simplification that was a NOOP. DAG size: 742 [2020-10-27 13:51:28,152 WARN L193 SmtUtils]: Spent 3.74 s on a formula simplification that was a NOOP. DAG size: 733 [2020-10-27 13:51:32,327 WARN L193 SmtUtils]: Spent 3.93 s on a formula simplification that was a NOOP. DAG size: 751 [2020-10-27 13:51:36,442 WARN L193 SmtUtils]: Spent 3.97 s on a formula simplification that was a NOOP. DAG size: 755 [2020-10-27 13:51:40,664 WARN L193 SmtUtils]: Spent 3.94 s on a formula simplification that was a NOOP. DAG size: 746 [2020-10-27 13:51:45,285 WARN L193 SmtUtils]: Spent 3.92 s on a formula simplification that was a NOOP. DAG size: 747 [2020-10-27 13:51:49,398 WARN L193 SmtUtils]: Spent 3.63 s on a formula simplification that was a NOOP. DAG size: 737 [2020-10-27 13:51:56,974 WARN L193 SmtUtils]: Spent 7.46 s on a formula simplification. DAG size of input: 758 DAG size of output: 739 [2020-10-27 13:52:00,783 WARN L193 SmtUtils]: Spent 3.63 s on a formula simplification that was a NOOP. DAG size: 736 [2020-10-27 13:52:04,614 WARN L193 SmtUtils]: Spent 3.66 s on a formula simplification that was a NOOP. DAG size: 738 [2020-10-27 13:52:12,615 WARN L193 SmtUtils]: Spent 7.72 s on a formula simplification. DAG size of input: 760 DAG size of output: 741 [2020-10-27 13:52:20,253 WARN L193 SmtUtils]: Spent 7.46 s on a formula simplification. DAG size of input: 749 DAG size of output: 730 [2020-10-27 13:52:24,309 WARN L193 SmtUtils]: Spent 3.56 s on a formula simplification that was a NOOP. DAG size: 737 [2020-10-27 13:52:31,874 WARN L193 SmtUtils]: Spent 7.43 s on a formula simplification. DAG size of input: 758 DAG size of output: 739 [2020-10-27 13:52:39,638 WARN L193 SmtUtils]: Spent 7.46 s on a formula simplification. DAG size of input: 749 DAG size of output: 730 [2020-10-27 13:52:46,218 WARN L193 SmtUtils]: Spent 3.59 s on a formula simplification that was a NOOP. DAG size: 738 [2020-10-27 13:52:50,841 WARN L193 SmtUtils]: Spent 3.64 s on a formula simplification that was a NOOP. DAG size: 744 [2020-10-27 13:52:55,124 WARN L193 SmtUtils]: Spent 3.75 s on a formula simplification that was a NOOP. DAG size: 748 [2020-10-27 13:53:24,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 13:53:24,970 INFO L93 Difference]: Finished difference Result 1868 states and 2677 transitions. [2020-10-27 13:53:24,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 13:53:24,973 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 172 [2020-10-27 13:53:24,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 13:53:25,002 INFO L225 Difference]: With dead ends: 1868 [2020-10-27 13:53:25,002 INFO L226 Difference]: Without dead ends: 1060 [2020-10-27 13:53:25,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 96.7s TimeCoverageRelationStatistics Valid=355, Invalid=1901, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 13:53:25,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2020-10-27 13:53:25,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 768. [2020-10-27 13:53:25,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 768 states. [2020-10-27 13:53:25,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1023 transitions. [2020-10-27 13:53:25,438 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1023 transitions. Word has length 172 [2020-10-27 13:53:25,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 13:53:25,439 INFO L481 AbstractCegarLoop]: Abstraction has 768 states and 1023 transitions. [2020-10-27 13:53:25,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 13:53:25,439 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1023 transitions. [2020-10-27 13:53:25,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-27 13:53:25,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 13:53:25,446 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 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] [2020-10-27 13:53:25,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 13:53:25,447 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 13:53:25,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 13:53:25,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1997618170, now seen corresponding path program 1 times [2020-10-27 13:53:25,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 13:53:25,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478413184] [2020-10-27 13:53:25,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 13:53:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:25,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:26,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:26,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:26,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:26,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:31,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:31,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-27 13:53:31,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 13:53:31,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5667 [2020-10-27 13:53:31,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:31,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 13:53:31,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-27 13:53:31,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 13:53:31,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:34,852 WARN L193 SmtUtils]: Spent 3.43 s on a formula simplification that was a NOOP. DAG size: 724 [2020-10-27 13:53:34,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 13:53:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:34,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:35,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:35,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 13:53:35,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:53:35,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 608 [2020-10-27 13:53:35,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:35,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:53:35,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:53:35,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:53:35,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:35,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 13:53:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:35,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:35,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:35,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 13:53:35,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:53:35,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 13:53:35,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:35,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:53:35,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:53:35,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:53:35,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:35,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 13:53:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:35,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:35,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:35,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 13:53:35,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:53:35,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 13:53:35,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:35,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:53:35,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:53:35,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:53:35,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:35,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 13:53:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:35,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:35,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:35,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 13:53:35,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:53:35,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 13:53:35,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:35,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:53:35,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:53:35,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:53:35,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:35,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 13:53:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:35,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:35,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:35,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 13:53:35,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:53:35,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 13:53:35,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:35,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:53:35,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:53:35,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:53:35,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:35,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 13:53:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:35,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:35,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:35,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 13:53:35,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:53:35,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 13:53:35,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:35,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:53:35,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:53:35,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:53:35,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:35,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 13:53:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:35,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:35,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:35,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 13:53:35,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:53:35,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 13:53:35,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:35,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:53:35,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:53:35,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:53:35,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:35,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 13:53:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:35,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:35,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:35,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 13:53:35,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:53:35,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 13:53:35,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:35,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:53:35,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:53:35,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:53:35,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 13:53:35,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 13:53:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:35,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:35,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:35,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 13:53:35,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:53:35,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 13:53:35,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:53:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:53:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:53:35,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:35,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 13:53:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:35,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:35,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:35,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 13:53:35,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:53:35,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 13:53:35,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:35,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:53:35,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:53:35,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:53:35,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:35,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 13:53:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:35,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:35,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:35,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 13:53:35,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:53:35,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 13:53:35,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:35,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:53:35,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:53:35,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:53:35,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:35,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 13:53:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:35,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:35,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:35,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 13:53:35,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:53:35,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 13:53:35,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:35,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:53:35,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:53:35,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:53:35,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:35,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 13:53:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:35,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:35,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:35,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 13:53:35,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:53:35,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 13:53:35,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:35,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:53:35,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:53:35,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:53:35,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:35,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 13:53:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:35,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:35,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:35,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 13:53:35,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:53:35,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 13:53:35,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:35,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:53:35,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:53:35,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:53:35,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:35,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 13:53:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:35,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:35,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:35,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 13:53:35,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:53:35,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 13:53:35,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:35,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:53:35,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:53:35,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:53:35,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:35,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 13:53:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:35,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:35,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:35,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 13:53:35,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:53:35,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 13:53:35,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:35,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:53:35,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:53:35,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:53:35,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:35,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 13:53:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:36,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:36,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:36,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 13:53:36,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:53:36,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 13:53:36,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:36,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 13:53:36,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 13:53:36,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 13:53:36,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:36,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 13:53:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:36,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:36,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:36,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 13:53:36,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:53:36,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 13:53:36,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:36,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 13:53:36,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:53:36,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 13:53:36,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:36,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 13:53:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:36,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:36,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:36,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:36,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 13:53:36,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 13:53:36,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 13:53:36,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:36,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 13:53:36,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 13:53:36,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 13:53:36,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:36,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 13:53:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:36,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:36,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:36,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 13:53:36,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:53:36,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 13:53:36,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:36,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 13:53:36,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:53:36,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 13:53:36,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:36,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-27 13:53:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:37,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:37,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:37,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:37,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 13:53:37,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 13:53:37,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 13:53:37,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:37,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 13:53:37,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 13:53:37,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 13:53:37,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:37,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 13:53:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:37,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:37,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:37,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 13:53:37,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:53:37,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 13:53:37,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:37,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 13:53:37,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:53:37,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 13:53:37,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:37,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 13:53:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:37,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:37,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:37,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:37,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 13:53:37,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 13:53:37,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 13:53:37,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:37,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 13:53:37,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 13:53:37,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 13:53:37,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:37,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 13:53:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:37,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:37,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:37,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 13:53:37,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:53:37,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 13:53:37,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:37,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 13:53:37,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:53:37,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 13:53:37,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:37,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-27 13:53:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:37,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:37,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:37,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:37,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 13:53:37,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 13:53:37,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-27 13:53:37,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:37,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 13:53:37,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 13:53:37,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 13:53:37,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:37,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 13:53:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:37,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:37,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:37,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 13:53:37,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:53:37,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 13:53:37,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:37,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 13:53:37,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:53:37,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 13:53:37,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:37,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-27 13:53:37,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:37,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:37,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:37,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 13:53:37,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:53:37,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 13:53:37,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:37,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:53:37,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 13:53:37,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:53:37,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:37,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 13:53:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:37,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:37,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:37,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 13:53:37,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:53:37,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 13:53:37,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:37,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:53:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:53:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:53:37,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:38,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 13:53:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:53:38,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:53:38,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:53:38,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 13:53:38,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:53:38,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 13:53:38,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 13:53:38,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:53:38,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:53:38,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:53:38,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:53:38,124 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 26 proven. 50 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-27 13:53:38,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478413184] [2020-10-27 13:53:38,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 13:53:38,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 13:53:38,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844394053] [2020-10-27 13:53:38,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 13:53:38,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 13:53:38,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 13:53:38,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2020-10-27 13:53:38,129 INFO L87 Difference]: Start difference. First operand 768 states and 1023 transitions. Second operand 21 states. [2020-10-27 13:53:41,816 WARN L193 SmtUtils]: Spent 3.59 s on a formula simplification that was a NOOP. DAG size: 733 [2020-10-27 13:54:04,319 WARN L193 SmtUtils]: Spent 7.59 s on a formula simplification. DAG size of input: 750 DAG size of output: 737 [2020-10-27 13:54:08,321 WARN L193 SmtUtils]: Spent 3.88 s on a formula simplification that was a NOOP. DAG size: 737 [2020-10-27 13:54:12,091 WARN L193 SmtUtils]: Spent 3.65 s on a formula simplification that was a NOOP. DAG size: 729 [2020-10-27 13:54:15,859 WARN L193 SmtUtils]: Spent 3.62 s on a formula simplification that was a NOOP. DAG size: 730 [2020-10-27 13:54:23,651 WARN L193 SmtUtils]: Spent 7.58 s on a formula simplification. DAG size of input: 745 DAG size of output: 733