/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-linux-3.0/usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 08:36:00,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 08:36:00,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 08:36:00,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 08:36:00,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 08:36:00,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 08:36:00,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 08:36:00,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 08:36:00,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 08:36:00,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 08:36:00,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 08:36:00,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 08:36:00,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 08:36:00,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 08:36:00,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 08:36:00,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 08:36:00,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 08:36:00,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 08:36:00,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 08:36:00,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 08:36:00,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 08:36:00,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 08:36:00,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 08:36:00,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 08:36:00,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 08:36:00,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 08:36:00,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 08:36:00,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 08:36:00,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 08:36:00,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 08:36:00,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 08:36:00,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 08:36:00,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 08:36:00,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 08:36:00,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 08:36:00,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 08:36:00,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 08:36:00,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 08:36:00,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 08:36:00,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 08:36:00,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 08:36:00,260 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 08:36:00,291 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 08:36:00,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 08:36:00,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 08:36:00,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 08:36:00,297 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 08:36:00,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 08:36:00,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 08:36:00,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 08:36:00,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 08:36:00,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 08:36:00,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 08:36:00,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 08:36:00,300 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 08:36:00,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 08:36:00,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 08:36:00,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 08:36:00,301 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 08:36:00,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 08:36:00,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 08:36:00,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 08:36:00,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 08:36:00,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 08:36:00,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 08:36:00,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 08:36:00,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 08:36:00,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 08:36:00,304 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-27 08:36:00,304 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 08:36:00,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 08:36:00,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 08:36:00,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 08:36:00,739 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 08:36:00,740 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 08:36:00,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i [2020-10-27 08:36:00,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a43e9487/80d867f1d680452287f8ab942f9223f1/FLAG88a628a7f [2020-10-27 08:36:01,904 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 08:36:01,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i [2020-10-27 08:36:01,947 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a43e9487/80d867f1d680452287f8ab942f9223f1/FLAG88a628a7f [2020-10-27 08:36:02,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a43e9487/80d867f1d680452287f8ab942f9223f1 [2020-10-27 08:36:02,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 08:36:02,371 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 08:36:02,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 08:36:02,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 08:36:02,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 08:36:02,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:36:02" (1/1) ... [2020-10-27 08:36:02,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57fad4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:02, skipping insertion in model container [2020-10-27 08:36:02,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:36:02" (1/1) ... [2020-10-27 08:36:02,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 08:36:02,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 08:36:03,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 08:36:03,822 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 08:36:04,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 08:36:04,287 INFO L208 MainTranslator]: Completed translation [2020-10-27 08:36:04,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:04 WrapperNode [2020-10-27 08:36:04,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 08:36:04,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 08:36:04,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 08:36:04,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 08:36:04,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:04" (1/1) ... [2020-10-27 08:36:04,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:04" (1/1) ... [2020-10-27 08:36:04,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:04" (1/1) ... [2020-10-27 08:36:04,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:04" (1/1) ... [2020-10-27 08:36:04,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:04" (1/1) ... [2020-10-27 08:36:04,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:04" (1/1) ... [2020-10-27 08:36:04,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:04" (1/1) ... [2020-10-27 08:36:04,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 08:36:04,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 08:36:04,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 08:36:04,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 08:36:04,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:04" (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 08:36:04,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 08:36:04,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 08:36:04,736 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 08:36:04,736 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2020-10-27 08:36:04,737 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2020-10-27 08:36:04,737 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-10-27 08:36:04,737 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2020-10-27 08:36:04,738 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2020-10-27 08:36:04,738 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2020-10-27 08:36:04,738 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2020-10-27 08:36:04,738 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-10-27 08:36:04,739 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-10-27 08:36:04,739 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2020-10-27 08:36:04,740 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2020-10-27 08:36:04,740 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2020-10-27 08:36:04,740 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2020-10-27 08:36:04,740 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2020-10-27 08:36:04,742 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2020-10-27 08:36:04,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2020-10-27 08:36:04,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_int_must_check_helper [2020-10-27 08:36:04,743 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_buffer_init [2020-10-27 08:36:04,743 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_buffer_free [2020-10-27 08:36:04,743 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_buffer_write [2020-10-27 08:36:04,743 INFO L138 BoogieDeclarations]: Found implementation of procedure free_imon_context [2020-10-27 08:36:04,744 INFO L138 BoogieDeclarations]: Found implementation of procedure deregister_from_lirc [2020-10-27 08:36:04,744 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2020-10-27 08:36:04,744 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2020-10-27 08:36:04,744 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2020-10-27 08:36:04,745 INFO L138 BoogieDeclarations]: Found implementation of procedure vfd_write [2020-10-27 08:36:04,745 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_tx_callback [2020-10-27 08:36:04,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_open [2020-10-27 08:36:04,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_close [2020-10-27 08:36:04,745 INFO L138 BoogieDeclarations]: Found implementation of procedure submit_data [2020-10-27 08:36:04,745 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_incoming_packet [2020-10-27 08:36:04,745 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_rx_callback [2020-10-27 08:36:04,746 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_probe [2020-10-27 08:36:04,746 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2020-10-27 08:36:04,746 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_suspend [2020-10-27 08:36:04,746 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_resume [2020-10-27 08:36:04,746 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_init [2020-10-27 08:36:04,746 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_exit [2020-10-27 08:36:04,747 INFO L138 BoogieDeclarations]: Found implementation of procedure init_module [2020-10-27 08:36:04,747 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup_module [2020-10-27 08:36:04,747 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 08:36:04,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2020-10-27 08:36:04,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2020-10-27 08:36:04,747 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2020-10-27 08:36:04,748 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2020-10-27 08:36:04,748 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2020-10-27 08:36:04,748 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2020-10-27 08:36:04,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-10-27 08:36:04,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2020-10-27 08:36:04,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_alloc [2020-10-27 08:36:04,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_free [2020-10-27 08:36:04,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_in [2020-10-27 08:36:04,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_in_r [2020-10-27 08:36:04,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-10-27 08:36:04,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-10-27 08:36:04,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2020-10-27 08:36:04,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2020-10-27 08:36:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2020-10-27 08:36:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2020-10-27 08:36:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2020-10-27 08:36:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2020-10-27 08:36:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2020-10-27 08:36:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_all [2020-10-27 08:36:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-10-27 08:36:04,752 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2020-10-27 08:36:04,752 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-10-27 08:36:04,752 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2020-10-27 08:36:04,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2020-10-27 08:36:04,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-10-27 08:36:04,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2020-10-27 08:36:04,753 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_register_driver [2020-10-27 08:36:04,754 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_unregister_driver [2020-10-27 08:36:04,755 INFO L138 BoogieDeclarations]: Found implementation of procedure memdup_user [2020-10-27 08:36:04,755 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2020-10-27 08:36:04,755 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-10-27 08:36:04,755 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-10-27 08:36:04,755 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-10-27 08:36:04,755 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2020-10-27 08:36:04,755 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_find_interface [2020-10-27 08:36:04,756 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2020-10-27 08:36:04,756 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2020-10-27 08:36:04,757 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_match_id [2020-10-27 08:36:04,757 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2020-10-27 08:36:04,758 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-10-27 08:36:04,758 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2020-10-27 08:36:04,758 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_interruptible [2020-10-27 08:36:04,758 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_fmt [2020-10-27 08:36:04,758 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-10-27 08:36:04,758 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-27 08:36:04,759 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2020-10-27 08:36:04,759 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 08:36:04,759 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 08:36:04,759 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 08:36:04,759 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 08:36:04,759 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 08:36:04,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 08:36:04,760 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-10-27 08:36:04,760 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_fmt [2020-10-27 08:36:04,760 INFO L130 BoogieDeclarations]: Found specification of procedure memdup_user [2020-10-27 08:36:04,760 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-27 08:36:04,760 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-10-27 08:36:04,760 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2020-10-27 08:36:04,760 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2020-10-27 08:36:04,761 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-10-27 08:36:04,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 08:36:04,761 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2020-10-27 08:36:04,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 08:36:04,762 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2020-10-27 08:36:04,762 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2020-10-27 08:36:04,762 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2020-10-27 08:36:04,763 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2020-10-27 08:36:04,763 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2020-10-27 08:36:04,763 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2020-10-27 08:36:04,763 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2020-10-27 08:36:04,763 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2020-10-27 08:36:04,764 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2020-10-27 08:36:04,764 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-10-27 08:36:04,764 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2020-10-27 08:36:04,764 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_interruptible [2020-10-27 08:36:04,764 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2020-10-27 08:36:04,764 INFO L130 BoogieDeclarations]: Found specification of procedure complete_all [2020-10-27 08:36:04,765 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-10-27 08:36:04,765 INFO L130 BoogieDeclarations]: Found specification of procedure init_module [2020-10-27 08:36:04,765 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup_module [2020-10-27 08:36:04,765 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-10-27 08:36:04,765 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-10-27 08:36:04,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-10-27 08:36:04,766 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-10-27 08:36:04,766 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-10-27 08:36:04,767 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-10-27 08:36:04,768 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2020-10-27 08:36:04,770 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2020-10-27 08:36:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2020-10-27 08:36:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2020-10-27 08:36:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2020-10-27 08:36:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2020-10-27 08:36:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2020-10-27 08:36:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2020-10-27 08:36:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 08:36:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2020-10-27 08:36:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure usb_match_id [2020-10-27 08:36:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure usb_find_interface [2020-10-27 08:36:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-10-27 08:36:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2020-10-27 08:36:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-10-27 08:36:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2020-10-27 08:36:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2020-10-27 08:36:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2020-10-27 08:36:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 08:36:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2020-10-27 08:36:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2020-10-27 08:36:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2020-10-27 08:36:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2020-10-27 08:36:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2020-10-27 08:36:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2020-10-27 08:36:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2020-10-27 08:36:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_int_must_check_helper [2020-10-27 08:36:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_alloc [2020-10-27 08:36:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_free [2020-10-27 08:36:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_in [2020-10-27 08:36:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_in_r [2020-10-27 08:36:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_buffer_init [2020-10-27 08:36:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_buffer_free [2020-10-27 08:36:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_buffer_write [2020-10-27 08:36:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_register_driver [2020-10-27 08:36:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_unregister_driver [2020-10-27 08:36:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure imon_probe [2020-10-27 08:36:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2020-10-27 08:36:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure usb_rx_callback [2020-10-27 08:36:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure usb_tx_callback [2020-10-27 08:36:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure imon_resume [2020-10-27 08:36:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure imon_suspend [2020-10-27 08:36:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2020-10-27 08:36:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2020-10-27 08:36:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure vfd_write [2020-10-27 08:36:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure ir_open [2020-10-27 08:36:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure ir_close [2020-10-27 08:36:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure imon_init [2020-10-27 08:36:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure imon_exit [2020-10-27 08:36:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure free_imon_context [2020-10-27 08:36:04,787 INFO L130 BoogieDeclarations]: Found specification of procedure deregister_from_lirc [2020-10-27 08:36:04,787 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2020-10-27 08:36:04,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-27 08:36:04,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 08:36:04,787 INFO L130 BoogieDeclarations]: Found specification of procedure submit_data [2020-10-27 08:36:04,787 INFO L130 BoogieDeclarations]: Found specification of procedure imon_incoming_packet [2020-10-27 08:36:04,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2020-10-27 08:36:04,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-10-27 08:36:04,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2020-10-27 08:36:04,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-10-27 08:36:04,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 08:36:04,788 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 08:36:04,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2020-10-27 08:36:04,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2020-10-27 08:36:04,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2020-10-27 08:36:04,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-27 08:36:04,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 08:36:04,789 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 08:36:04,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-10-27 08:36:04,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 08:36:04,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-27 08:36:04,789 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 08:36:04,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 08:36:04,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 08:36:04,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-27 08:36:04,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 08:36:04,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-27 08:36:04,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-27 08:36:04,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-27 08:36:04,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-27 08:36:06,748 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2020-10-27 08:36:13,223 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 08:36:13,256 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-10-27 08:36:13,256 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-10-27 08:36:13,422 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 08:36:13,468 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume !false; [2020-10-27 08:36:13,468 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume false; [2020-10-27 08:36:13,817 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 08:36:13,817 INFO L298 CfgBuilder]: Removed 40 assume(true) statements. [2020-10-27 08:36:13,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:36:13 BoogieIcfgContainer [2020-10-27 08:36:13,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 08:36:13,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 08:36:13,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 08:36:13,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 08:36:13,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:36:02" (1/3) ... [2020-10-27 08:36:13,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aaec3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:36:13, skipping insertion in model container [2020-10-27 08:36:13,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:04" (2/3) ... [2020-10-27 08:36:13,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aaec3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:36:13, skipping insertion in model container [2020-10-27 08:36:13,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:36:13" (3/3) ... [2020-10-27 08:36:13,830 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i [2020-10-27 08:36:13,842 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 08:36:13,849 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 08:36:13,863 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 08:36:13,895 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 08:36:13,896 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 08:36:13,896 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 08:36:13,896 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 08:36:13,896 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 08:36:13,896 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 08:36:13,896 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 08:36:13,897 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 08:36:13,930 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states. [2020-10-27 08:36:13,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 08:36:13,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 08:36:13,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 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 08:36:13,938 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 08:36:13,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 08:36:13,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1257740424, now seen corresponding path program 1 times [2020-10-27 08:36:13,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 08:36:13,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520828770] [2020-10-27 08:36:13,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 08:36:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:36:14,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:36:21,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:36:21,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 08:36:21,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:36:21,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6475 [2020-10-27 08:36:21,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:36:21,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 08:36:21,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 08:36:21,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 08:36:21,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 08:36:29,021 WARN L193 SmtUtils]: Spent 7.42 s on a formula simplification that was a NOOP. DAG size: 1069 [2020-10-27 08:36:29,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 08:36:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:36:29,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:36:32,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:36:32,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 08:36:32,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:36:32,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2853 [2020-10-27 08:36:32,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:36:32,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:36:32,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:36:32,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 08:36:32,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:36:32,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 08:36:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:36:32,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:36:32,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:36:32,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-27 08:36:32,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:36:32,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 08:36:32,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:36:32,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:36:32,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:36:32,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 08:36:32,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:36:32,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 08:36:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:36:32,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:36:32,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:36:32,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 08:36:32,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:36:32,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 08:36:32,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:36:32,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:36:32,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:36:32,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 08:36:32,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:36:32,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 08:36:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:36:32,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:36:32,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:36:32,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 08:36:32,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:36:32,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 08:36:32,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:36:32,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:36:32,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:36:32,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:36:32,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:36:32,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 08:36:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:36:32,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:36:32,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:36:32,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 08:36:32,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:36:32,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 08:36:32,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:36:32,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:36:32,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:36:32,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:36:32,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:36:32,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 08:36:32,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520828770] [2020-10-27 08:36:32,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 08:36:32,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 08:36:32,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584691962] [2020-10-27 08:36:32,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 08:36:32,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 08:36:32,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 08:36:32,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 08:36:32,318 INFO L87 Difference]: Start difference. First operand 696 states. Second operand 4 states. [2020-10-27 08:36:41,444 WARN L193 SmtUtils]: Spent 6.71 s on a formula simplification that was a NOOP. DAG size: 1071 [2020-10-27 08:37:15,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 08:37:15,389 INFO L93 Difference]: Finished difference Result 1643 states and 2457 transitions. [2020-10-27 08:37:15,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 08:37:15,391 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-27 08:37:15,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 08:37:15,421 INFO L225 Difference]: With dead ends: 1643 [2020-10-27 08:37:15,421 INFO L226 Difference]: Without dead ends: 1216 [2020-10-27 08:37:15,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 08:37:15,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2020-10-27 08:37:16,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 956. [2020-10-27 08:37:16,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 956 states. [2020-10-27 08:37:16,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1247 transitions. [2020-10-27 08:37:16,448 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1247 transitions. Word has length 32 [2020-10-27 08:37:16,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 08:37:16,449 INFO L481 AbstractCegarLoop]: Abstraction has 956 states and 1247 transitions. [2020-10-27 08:37:16,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 08:37:16,449 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1247 transitions. [2020-10-27 08:37:16,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-27 08:37:16,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 08:37:16,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:37:16,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 08:37:16,451 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 08:37:16,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 08:37:16,452 INFO L82 PathProgramCache]: Analyzing trace with hash -5763396, now seen corresponding path program 1 times [2020-10-27 08:37:16,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 08:37:16,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842540546] [2020-10-27 08:37:16,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 08:37:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:37:16,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:37:20,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:37:20,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 08:37:20,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:37:20,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4248 [2020-10-27 08:37:20,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:37:20,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:37:20,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 08:37:20,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 08:37:20,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:37:27,668 WARN L193 SmtUtils]: Spent 6.61 s on a formula simplification that was a NOOP. DAG size: 1069 [2020-10-27 08:37:27,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 08:37:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:37:27,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:37:30,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:37:30,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 08:37:30,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:37:30,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2581 [2020-10-27 08:37:30,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:37:30,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:37:30,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:37:30,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 08:37:30,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:37:30,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 08:37:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:37:30,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:37:30,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:37:30,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-27 08:37:30,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:37:30,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 08:37:30,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:37:30,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:37:30,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:37:30,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 08:37:30,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:37:30,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 08:37:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:37:30,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:37:30,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:37:30,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 08:37:30,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:37:30,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 08:37:30,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:37:30,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:37:30,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:37:30,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 08:37:30,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:37:30,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 08:37:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:37:30,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:37:30,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:37:30,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 08:37:30,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:37:30,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 08:37:30,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:37:30,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:37:30,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:37:30,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:37:30,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:37:30,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 08:37:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:37:30,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:37:30,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:37:30,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 08:37:30,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:37:30,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 08:37:30,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:37:30,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:37:30,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:37:30,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:37:30,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 08:37:30,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 08:37:30,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842540546] [2020-10-27 08:37:30,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 08:37:30,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 08:37:30,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33321597] [2020-10-27 08:37:30,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 08:37:30,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 08:37:30,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 08:37:30,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 08:37:30,555 INFO L87 Difference]: Start difference. First operand 956 states and 1247 transitions. Second operand 4 states. [2020-10-27 08:37:39,788 WARN L193 SmtUtils]: Spent 6.83 s on a formula simplification that was a NOOP. DAG size: 1071 [2020-10-27 08:37:55,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 08:37:55,793 INFO L93 Difference]: Finished difference Result 1215 states and 1657 transitions. [2020-10-27 08:37:55,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 08:37:55,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-27 08:37:55,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 08:37:55,803 INFO L225 Difference]: With dead ends: 1215 [2020-10-27 08:37:55,804 INFO L226 Difference]: Without dead ends: 1199 [2020-10-27 08:37:55,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 08:37:55,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-10-27 08:37:56,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 944. [2020-10-27 08:37:56,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 944 states. [2020-10-27 08:37:56,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1231 transitions. [2020-10-27 08:37:56,435 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1231 transitions. Word has length 33 [2020-10-27 08:37:56,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 08:37:56,436 INFO L481 AbstractCegarLoop]: Abstraction has 944 states and 1231 transitions. [2020-10-27 08:37:56,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 08:37:56,436 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1231 transitions. [2020-10-27 08:37:56,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 08:37:56,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 08:37:56,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:37:56,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 08:37:56,440 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 08:37:56,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 08:37:56,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1211598212, now seen corresponding path program 1 times [2020-10-27 08:37:56,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 08:37:56,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172880792] [2020-10-27 08:37:56,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 08:37:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:37:56,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:37:57,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:37:57,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:02,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:02,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 08:38:02,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 08:38:02,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5942 [2020-10-27 08:38:02,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:02,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 08:38:02,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 08:38:02,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 08:38:02,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 08:38:09,607 WARN L193 SmtUtils]: Spent 6.82 s on a formula simplification that was a NOOP. DAG size: 1069 [2020-10-27 08:38:09,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 08:38:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:09,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:10,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:10,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 08:38:10,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:10,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 982 [2020-10-27 08:38:10,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:10,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:38:10,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:10,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:38:10,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:10,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 08:38:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:10,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:10,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:10,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-27 08:38:10,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:10,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 08:38:10,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:10,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:38:10,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:10,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:38:10,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:10,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 08:38:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:10,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:10,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:10,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 08:38:10,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:10,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 08:38:10,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:10,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 08:38:10,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:10,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 08:38:10,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:10,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 08:38:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:10,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:10,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:10,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 08:38:10,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:10,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 08:38:10,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:10,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:38:10,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:10,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:38:10,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:10,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 08:38:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:10,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:10,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:10,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 08:38:10,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:10,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 08:38:10,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:38:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:38:10,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:10,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 08:38:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:10,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:10,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:10,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 08:38:10,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:10,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 08:38:10,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:10,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:38:10,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 08:38:10,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:38:10,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:10,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 08:38:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:10,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:10,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:10,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 08:38:10,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:10,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 08:38:10,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:10,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:38:10,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:10,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:38:10,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:10,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 08:38:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:10,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:10,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:10,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 08:38:10,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:10,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 08:38:10,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:10,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:38:10,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:10,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:38:10,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:10,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 08:38:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:10,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:10,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:10,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 08:38:10,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:10,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 08:38:10,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:10,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:38:10,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:10,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:38:10,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:10,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 08:38:10,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172880792] [2020-10-27 08:38:10,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 08:38:10,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 08:38:10,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170761077] [2020-10-27 08:38:10,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 08:38:10,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 08:38:10,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 08:38:10,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 08:38:10,974 INFO L87 Difference]: Start difference. First operand 944 states and 1231 transitions. Second operand 7 states. [2020-10-27 08:38:20,884 WARN L193 SmtUtils]: Spent 7.22 s on a formula simplification that was a NOOP. DAG size: 1074 [2020-10-27 08:38:42,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 08:38:42,099 INFO L93 Difference]: Finished difference Result 2183 states and 2958 transitions. [2020-10-27 08:38:42,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 08:38:42,100 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 67 [2020-10-27 08:38:42,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 08:38:42,108 INFO L225 Difference]: With dead ends: 2183 [2020-10-27 08:38:42,108 INFO L226 Difference]: Without dead ends: 1261 [2020-10-27 08:38:42,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 08:38:42,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2020-10-27 08:38:42,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 944. [2020-10-27 08:38:42,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 944 states. [2020-10-27 08:38:42,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1230 transitions. [2020-10-27 08:38:42,851 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1230 transitions. Word has length 67 [2020-10-27 08:38:42,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 08:38:42,851 INFO L481 AbstractCegarLoop]: Abstraction has 944 states and 1230 transitions. [2020-10-27 08:38:42,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 08:38:42,852 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1230 transitions. [2020-10-27 08:38:42,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 08:38:42,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 08:38:42,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:38:42,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 08:38:42,855 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 08:38:42,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 08:38:42,856 INFO L82 PathProgramCache]: Analyzing trace with hash 28250915, now seen corresponding path program 1 times [2020-10-27 08:38:42,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 08:38:42,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113925521] [2020-10-27 08:38:42,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 08:38:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:43,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:43,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:49,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:49,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 08:38:49,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 08:38:49,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6123 [2020-10-27 08:38:49,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:49,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 08:38:49,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 08:38:49,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 08:38:49,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:56,019 WARN L193 SmtUtils]: Spent 6.57 s on a formula simplification that was a NOOP. DAG size: 1069 [2020-10-27 08:38:56,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 08:38:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:56,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:57,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:57,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 08:38:57,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:57,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1101 [2020-10-27 08:38:57,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:57,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:38:57,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:57,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:38:57,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:57,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 08:38:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:57,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:57,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:57,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-27 08:38:57,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:57,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 08:38:57,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:38:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:38:57,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:57,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 08:38:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:57,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:57,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:57,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 08:38:57,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:57,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 08:38:57,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:57,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:38:57,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:57,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:38:57,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:57,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 08:38:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:57,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:57,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:57,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 08:38:57,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:57,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 08:38:57,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:57,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:38:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:38:57,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:57,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 08:38:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:57,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:57,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:57,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 08:38:57,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:57,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 08:38:57,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:57,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:38:57,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:57,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:38:57,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:57,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 08:38:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:57,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:57,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:57,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 08:38:57,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:57,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 08:38:57,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:57,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:38:57,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:57,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 08:38:57,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 08:38:57,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 08:38:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:57,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:57,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:57,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 08:38:57,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:57,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 08:38:57,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:57,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:38:57,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:57,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:38:57,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:57,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 08:38:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:57,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:57,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:57,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 08:38:57,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:57,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 08:38:57,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:57,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:38:57,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:57,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:38:57,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:57,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 08:38:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:57,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:57,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:57,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 08:38:57,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:57,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 08:38:57,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:57,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:38:57,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:57,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:38:57,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:57,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 08:38:57,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113925521] [2020-10-27 08:38:57,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 08:38:57,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 08:38:57,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255165237] [2020-10-27 08:38:57,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 08:38:57,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 08:38:57,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 08:38:57,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 08:38:57,467 INFO L87 Difference]: Start difference. First operand 944 states and 1230 transitions. Second operand 7 states. [2020-10-27 08:39:07,209 WARN L193 SmtUtils]: Spent 6.68 s on a formula simplification that was a NOOP. DAG size: 1074 [2020-10-27 08:39:16,187 WARN L193 SmtUtils]: Spent 6.71 s on a formula simplification that was a NOOP. DAG size: 1074 [2020-10-27 08:39:23,075 WARN L193 SmtUtils]: Spent 6.76 s on a formula simplification that was a NOOP. DAG size: 1078 [2020-10-27 08:39:30,427 WARN L193 SmtUtils]: Spent 6.66 s on a formula simplification that was a NOOP. DAG size: 1074