./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6b81be647295ba0700d02fa1d093d31284b02ba80deefc4d677fbd988693200b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 18:55:59,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 18:55:59,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 18:55:59,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 18:55:59,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 18:55:59,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 18:55:59,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 18:55:59,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 18:55:59,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 18:55:59,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 18:55:59,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 18:55:59,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 18:55:59,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 18:55:59,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 18:55:59,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 18:55:59,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 18:55:59,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 18:55:59,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 18:55:59,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 18:55:59,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 18:55:59,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 18:55:59,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 18:55:59,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 18:55:59,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 18:55:59,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 18:55:59,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 18:55:59,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 18:55:59,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 18:55:59,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 18:55:59,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 18:55:59,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 18:55:59,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 18:55:59,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 18:55:59,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 18:55:59,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 18:55:59,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 18:55:59,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 18:55:59,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 18:55:59,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 18:55:59,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 18:55:59,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 18:55:59,757 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 18:55:59,782 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 18:55:59,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 18:55:59,783 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 18:55:59,783 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 18:55:59,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 18:55:59,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 18:55:59,784 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 18:55:59,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 18:55:59,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 18:55:59,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 18:55:59,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 18:55:59,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 18:55:59,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 18:55:59,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 18:55:59,786 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 18:55:59,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 18:55:59,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 18:55:59,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 18:55:59,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 18:55:59,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:55:59,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 18:55:59,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 18:55:59,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 18:55:59,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 18:55:59,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 18:55:59,788 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 18:55:59,788 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 18:55:59,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 18:55:59,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 18:55:59,788 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b81be647295ba0700d02fa1d093d31284b02ba80deefc4d677fbd988693200b [2021-11-06 18:55:59,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 18:55:59,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 18:55:59,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 18:55:59,997 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 18:55:59,998 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 18:55:59,999 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2021-11-06 18:56:00,044 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/578d38354/f257f334fd074bbd98a9c6e78ac8671e/FLAGc006907d5 [2021-11-06 18:56:00,683 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 18:56:00,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2021-11-06 18:56:00,725 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/578d38354/f257f334fd074bbd98a9c6e78ac8671e/FLAGc006907d5 [2021-11-06 18:56:00,832 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/578d38354/f257f334fd074bbd98a9c6e78ac8671e [2021-11-06 18:56:00,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 18:56:00,835 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 18:56:00,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 18:56:00,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 18:56:00,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 18:56:00,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:56:00" (1/1) ... [2021-11-06 18:56:00,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@237be76f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:00, skipping insertion in model container [2021-11-06 18:56:00,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:56:00" (1/1) ... [2021-11-06 18:56:00,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 18:56:00,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 18:56:02,453 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315060,315073] [2021-11-06 18:56:02,457 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315229,315242] [2021-11-06 18:56:02,457 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315396,315409] [2021-11-06 18:56:02,458 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315564,315577] [2021-11-06 18:56:02,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:56:02,515 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 18:56:02,737 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315060,315073] [2021-11-06 18:56:02,737 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315229,315242] [2021-11-06 18:56:02,738 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315396,315409] [2021-11-06 18:56:02,738 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315564,315577] [2021-11-06 18:56:02,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:56:02,872 INFO L208 MainTranslator]: Completed translation [2021-11-06 18:56:02,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:02 WrapperNode [2021-11-06 18:56:02,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 18:56:02,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 18:56:02,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 18:56:02,874 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 18:56:02,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:02" (1/1) ... [2021-11-06 18:56:02,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:02" (1/1) ... [2021-11-06 18:56:03,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 18:56:03,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 18:56:03,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 18:56:03,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 18:56:03,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:02" (1/1) ... [2021-11-06 18:56:03,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:02" (1/1) ... [2021-11-06 18:56:03,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:02" (1/1) ... [2021-11-06 18:56:03,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:02" (1/1) ... [2021-11-06 18:56:03,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:02" (1/1) ... [2021-11-06 18:56:03,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:02" (1/1) ... [2021-11-06 18:56:03,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:02" (1/1) ... [2021-11-06 18:56:03,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 18:56:03,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 18:56:03,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 18:56:03,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 18:56:03,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:02" (1/1) ... [2021-11-06 18:56:03,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:56:03,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:56:04,033 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 18:56:04,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 18:56:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 18:56:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 18:56:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 18:56:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 18:56:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 18:56:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 18:56:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 18:56:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 18:56:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 18:56:04,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 18:56:04,125 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_tx_timeout [2021-11-06 18:56:04,125 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_tx_timeout [2021-11-06 18:56:04,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 18:56:04,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 18:56:04,125 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 18:56:04,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 18:56:04,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 18:56:04,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 18:56:04,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 18:56:16,025 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#4: ldv_switch_1_#res := 0; [2021-11-06 18:56:16,025 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 18:56:16,026 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 18:56:16,026 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 18:56:16,026 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 18:56:16,026 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 18:56:16,048 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 18:56:16,048 INFO L299 CfgBuilder]: Removed 8324 assume(true) statements. [2021-11-06 18:56:16,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:56:16 BoogieIcfgContainer [2021-11-06 18:56:16,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 18:56:16,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 18:56:16,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 18:56:16,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 18:56:16,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:56:00" (1/3) ... [2021-11-06 18:56:16,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b77a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:56:16, skipping insertion in model container [2021-11-06 18:56:16,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:02" (2/3) ... [2021-11-06 18:56:16,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b77a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:56:16, skipping insertion in model container [2021-11-06 18:56:16,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:56:16" (3/3) ... [2021-11-06 18:56:16,058 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2021-11-06 18:56:16,061 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 18:56:16,061 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 58 error locations. [2021-11-06 18:56:16,099 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 18:56:16,103 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 18:56:16,103 INFO L340 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2021-11-06 18:56:16,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 3785 states, 3722 states have (on average 1.2525523911875336) internal successors, (4662), 3780 states have internal predecessors, (4662), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-06 18:56:16,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-06 18:56:16,148 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:56:16,148 INFO L513 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] [2021-11-06 18:56:16,149 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [axnet_tx_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr2ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-06 18:56:16,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:56:16,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1406977347, now seen corresponding path program 1 times [2021-11-06 18:56:16,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:56:16,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389779353] [2021-11-06 18:56:16,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:56:16,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:56:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:56:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:56:16,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:56:16,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389779353] [2021-11-06 18:56:16,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389779353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:56:16,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:56:16,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:56:16,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986678110] [2021-11-06 18:56:16,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:56:16,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:56:16,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:56:16,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:56:16,689 INFO L87 Difference]: Start difference. First operand has 3785 states, 3722 states have (on average 1.2525523911875336) internal successors, (4662), 3780 states have internal predecessors, (4662), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:19,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:56:19,109 INFO L93 Difference]: Finished difference Result 10991 states and 13550 transitions. [2021-11-06 18:56:19,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:56:19,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-06 18:56:19,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:56:19,138 INFO L225 Difference]: With dead ends: 10991 [2021-11-06 18:56:19,138 INFO L226 Difference]: Without dead ends: 6500 [2021-11-06 18:56:19,152 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:56:19,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6500 states. [2021-11-06 18:56:19,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6500 to 6456. [2021-11-06 18:56:19,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6456 states, 6388 states have (on average 1.1408891671884784) internal successors, (7288), 6447 states have internal predecessors, (7288), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-06 18:56:19,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6456 states to 6456 states and 7300 transitions. [2021-11-06 18:56:19,339 INFO L78 Accepts]: Start accepts. Automaton has 6456 states and 7300 transitions. Word has length 39 [2021-11-06 18:56:19,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:56:19,340 INFO L470 AbstractCegarLoop]: Abstraction has 6456 states and 7300 transitions. [2021-11-06 18:56:19,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:19,484 INFO L276 IsEmpty]: Start isEmpty. Operand 6456 states and 7300 transitions. [2021-11-06 18:56:19,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-06 18:56:19,485 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:56:19,485 INFO L513 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] [2021-11-06 18:56:19,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 18:56:19,485 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [axnet_tx_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr2ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-06 18:56:19,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:56:19,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1731787906, now seen corresponding path program 1 times [2021-11-06 18:56:19,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:56:19,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878624801] [2021-11-06 18:56:19,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:56:19,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:56:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:56:19,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:56:19,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:56:19,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878624801] [2021-11-06 18:56:19,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878624801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:56:19,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:56:19,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:56:19,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469678524] [2021-11-06 18:56:19,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:56:19,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:56:19,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:56:19,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:56:19,680 INFO L87 Difference]: Start difference. First operand 6456 states and 7300 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:22,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:56:22,093 INFO L93 Difference]: Finished difference Result 17742 states and 20025 transitions. [2021-11-06 18:56:22,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:56:22,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-06 18:56:22,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:56:22,132 INFO L225 Difference]: With dead ends: 17742 [2021-11-06 18:56:22,133 INFO L226 Difference]: Without dead ends: 11346 [2021-11-06 18:56:22,151 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:56:22,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11346 states. [2021-11-06 18:56:22,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11346 to 10180. [2021-11-06 18:56:22,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10180 states, 10102 states have (on average 1.1413581469016036) internal successors, (11530), 10163 states have internal predecessors, (11530), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2021-11-06 18:56:22,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10180 states to 10180 states and 11560 transitions. [2021-11-06 18:56:22,418 INFO L78 Accepts]: Start accepts. Automaton has 10180 states and 11560 transitions. Word has length 39 [2021-11-06 18:56:22,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:56:22,418 INFO L470 AbstractCegarLoop]: Abstraction has 10180 states and 11560 transitions. [2021-11-06 18:56:22,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:22,419 INFO L276 IsEmpty]: Start isEmpty. Operand 10180 states and 11560 transitions. [2021-11-06 18:56:22,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 18:56:22,427 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:56:22,427 INFO L513 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] [2021-11-06 18:56:22,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 18:56:22,428 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION === [axnet_tx_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr2ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-06 18:56:22,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:56:22,429 INFO L85 PathProgramCache]: Analyzing trace with hash -597381755, now seen corresponding path program 1 times [2021-11-06 18:56:22,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:56:22,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115669656] [2021-11-06 18:56:22,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:56:22,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:56:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:56:22,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:56:22,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:56:22,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115669656] [2021-11-06 18:56:22,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115669656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:56:22,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:56:22,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:56:22,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21071227] [2021-11-06 18:56:22,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:56:22,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:56:22,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:56:22,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:56:22,616 INFO L87 Difference]: Start difference. First operand 10180 states and 11560 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:25,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:56:25,076 INFO L93 Difference]: Finished difference Result 26888 states and 30506 transitions. [2021-11-06 18:56:25,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:56:25,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-06 18:56:25,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:56:25,125 INFO L225 Difference]: With dead ends: 26888 [2021-11-06 18:56:25,125 INFO L226 Difference]: Without dead ends: 16768 [2021-11-06 18:56:25,149 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:56:25,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16768 states. [2021-11-06 18:56:25,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16768 to 16056. [2021-11-06 18:56:25,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16056 states, 15974 states have (on average 1.1401026668336045) internal successors, (18212), 16037 states have internal predecessors, (18212), 12 states have call successors, (12), 8 states have call predecessors, (12), 12 states have return successors, (24), 16 states have call predecessors, (24), 12 states have call successors, (24) [2021-11-06 18:56:25,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16056 states to 16056 states and 18248 transitions. [2021-11-06 18:56:25,580 INFO L78 Accepts]: Start accepts. Automaton has 16056 states and 18248 transitions. Word has length 45 [2021-11-06 18:56:25,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:56:25,580 INFO L470 AbstractCegarLoop]: Abstraction has 16056 states and 18248 transitions. [2021-11-06 18:56:25,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:25,581 INFO L276 IsEmpty]: Start isEmpty. Operand 16056 states and 18248 transitions. [2021-11-06 18:56:25,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 18:56:25,582 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:56:25,582 INFO L513 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] [2021-11-06 18:56:25,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 18:56:25,582 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION === [axnet_tx_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr2ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-06 18:56:25,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:56:25,583 INFO L85 PathProgramCache]: Analyzing trace with hash -218861770, now seen corresponding path program 1 times [2021-11-06 18:56:25,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:56:25,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911666077] [2021-11-06 18:56:25,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:56:25,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:56:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:56:25,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:56:25,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:56:25,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911666077] [2021-11-06 18:56:25,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911666077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:56:25,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:56:25,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:56:25,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080526065] [2021-11-06 18:56:25,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:56:25,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:56:25,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:56:25,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:56:25,718 INFO L87 Difference]: Start difference. First operand 16056 states and 18248 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:28,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:56:28,843 INFO L93 Difference]: Finished difference Result 25990 states and 29745 transitions. [2021-11-06 18:56:28,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:56:28,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-06 18:56:28,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:56:28,864 INFO L225 Difference]: With dead ends: 25990 [2021-11-06 18:56:28,864 INFO L226 Difference]: Without dead ends: 9994 [2021-11-06 18:56:28,893 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:56:28,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9994 states. [2021-11-06 18:56:29,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9994 to 8807. [2021-11-06 18:56:29,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8807 states, 8737 states have (on average 1.152226164587387) internal successors, (10067), 8797 states have internal predecessors, (10067), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2021-11-06 18:56:29,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8807 states to 8807 states and 10085 transitions. [2021-11-06 18:56:29,079 INFO L78 Accepts]: Start accepts. Automaton has 8807 states and 10085 transitions. Word has length 51 [2021-11-06 18:56:29,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:56:29,080 INFO L470 AbstractCegarLoop]: Abstraction has 8807 states and 10085 transitions. [2021-11-06 18:56:29,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:29,081 INFO L276 IsEmpty]: Start isEmpty. Operand 8807 states and 10085 transitions. [2021-11-06 18:56:29,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 18:56:29,082 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:56:29,082 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:56:29,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 18:56:29,082 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [axnet_tx_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr2ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-06 18:56:29,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:56:29,083 INFO L85 PathProgramCache]: Analyzing trace with hash 2041952333, now seen corresponding path program 1 times [2021-11-06 18:56:29,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:56:29,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973222904] [2021-11-06 18:56:29,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:56:29,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:56:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:56:29,383 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:56:29,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:56:29,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973222904] [2021-11-06 18:56:29,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973222904] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:56:29,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:56:29,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:56:29,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215440683] [2021-11-06 18:56:29,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:56:29,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:56:29,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:56:29,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:56:29,386 INFO L87 Difference]: Start difference. First operand 8807 states and 10085 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:31,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:56:31,805 INFO L93 Difference]: Finished difference Result 25743 states and 29504 transitions. [2021-11-06 18:56:31,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:56:31,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-06 18:56:31,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:56:31,841 INFO L225 Difference]: With dead ends: 25743 [2021-11-06 18:56:31,842 INFO L226 Difference]: Without dead ends: 17054 [2021-11-06 18:56:31,863 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:56:31,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17054 states. [2021-11-06 18:56:32,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17054 to 17010. [2021-11-06 18:56:32,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17010 states, 16928 states have (on average 1.1493974480151228) internal successors, (19457), 16991 states have internal predecessors, (19457), 12 states have call successors, (12), 8 states have call predecessors, (12), 12 states have return successors, (24), 16 states have call predecessors, (24), 12 states have call successors, (24) [2021-11-06 18:56:32,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17010 states to 17010 states and 19493 transitions. [2021-11-06 18:56:32,217 INFO L78 Accepts]: Start accepts. Automaton has 17010 states and 19493 transitions. Word has length 68 [2021-11-06 18:56:32,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:56:32,219 INFO L470 AbstractCegarLoop]: Abstraction has 17010 states and 19493 transitions. [2021-11-06 18:56:32,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:32,219 INFO L276 IsEmpty]: Start isEmpty. Operand 17010 states and 19493 transitions. [2021-11-06 18:56:32,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 18:56:32,221 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:56:32,221 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:56:32,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 18:56:32,221 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [axnet_tx_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr2ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-06 18:56:32,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:56:32,225 INFO L85 PathProgramCache]: Analyzing trace with hash 762088655, now seen corresponding path program 1 times [2021-11-06 18:56:32,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:56:32,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823834527] [2021-11-06 18:56:32,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:56:32,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:56:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:56:32,380 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:56:32,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:56:32,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823834527] [2021-11-06 18:56:32,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823834527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:56:32,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:56:32,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:56:32,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935985728] [2021-11-06 18:56:32,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:56:32,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:56:32,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:56:32,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:56:32,383 INFO L87 Difference]: Start difference. First operand 17010 states and 19493 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:34,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:56:34,991 INFO L93 Difference]: Finished difference Result 42157 states and 48336 transitions. [2021-11-06 18:56:34,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:56:34,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-06 18:56:34,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:56:35,051 INFO L225 Difference]: With dead ends: 42157 [2021-11-06 18:56:35,051 INFO L226 Difference]: Without dead ends: 25265 [2021-11-06 18:56:35,089 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:56:35,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25265 states. [2021-11-06 18:56:35,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25265 to 25172. [2021-11-06 18:56:35,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25172 states, 25078 states have (on average 1.1486561926788421) internal successors, (28806), 25144 states have internal predecessors, (28806), 18 states have call successors, (18), 12 states have call predecessors, (18), 18 states have return successors, (36), 24 states have call predecessors, (36), 18 states have call successors, (36) [2021-11-06 18:56:35,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25172 states to 25172 states and 28860 transitions. [2021-11-06 18:56:35,755 INFO L78 Accepts]: Start accepts. Automaton has 25172 states and 28860 transitions. Word has length 68 [2021-11-06 18:56:35,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:56:35,756 INFO L470 AbstractCegarLoop]: Abstraction has 25172 states and 28860 transitions. [2021-11-06 18:56:35,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:35,756 INFO L276 IsEmpty]: Start isEmpty. Operand 25172 states and 28860 transitions. [2021-11-06 18:56:35,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 18:56:35,757 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:56:35,757 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:56:35,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 18:56:35,758 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [axnet_tx_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr2ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-06 18:56:35,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:56:35,759 INFO L85 PathProgramCache]: Analyzing trace with hash -443277702, now seen corresponding path program 1 times [2021-11-06 18:56:35,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:56:35,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627054303] [2021-11-06 18:56:35,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:56:35,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:56:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:56:35,956 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 18:56:35,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:56:35,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627054303] [2021-11-06 18:56:35,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627054303] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:56:35,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:56:35,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:56:35,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496308879] [2021-11-06 18:56:35,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:56:35,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:56:35,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:56:35,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:56:35,959 INFO L87 Difference]: Start difference. First operand 25172 states and 28860 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:36,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:56:36,728 INFO L93 Difference]: Finished difference Result 25172 states and 28860 transitions. [2021-11-06 18:56:36,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:56:36,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-06 18:56:36,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:56:36,794 INFO L225 Difference]: With dead ends: 25172 [2021-11-06 18:56:36,794 INFO L226 Difference]: Without dead ends: 25166 [2021-11-06 18:56:36,808 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:56:36,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25166 states. [2021-11-06 18:56:37,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25166 to 25166. [2021-11-06 18:56:37,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25166 states, 25075 states have (on average 1.148554336989033) internal successors, (28800), 25138 states have internal predecessors, (28800), 18 states have call successors, (18), 12 states have call predecessors, (18), 18 states have return successors, (36), 24 states have call predecessors, (36), 18 states have call successors, (36) [2021-11-06 18:56:37,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25166 states to 25166 states and 28854 transitions. [2021-11-06 18:56:37,646 INFO L78 Accepts]: Start accepts. Automaton has 25166 states and 28854 transitions. Word has length 69 [2021-11-06 18:56:37,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:56:37,647 INFO L470 AbstractCegarLoop]: Abstraction has 25166 states and 28854 transitions. [2021-11-06 18:56:37,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:37,648 INFO L276 IsEmpty]: Start isEmpty. Operand 25166 states and 28854 transitions. [2021-11-06 18:56:37,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-06 18:56:37,649 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:56:37,649 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:56:37,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 18:56:37,650 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [axnet_tx_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr2ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-06 18:56:37,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:56:37,650 INFO L85 PathProgramCache]: Analyzing trace with hash -787889475, now seen corresponding path program 1 times [2021-11-06 18:56:37,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:56:37,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902771006] [2021-11-06 18:56:37,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:56:37,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:56:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:56:37,849 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 18:56:37,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:56:37,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902771006] [2021-11-06 18:56:37,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902771006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:56:37,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:56:37,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:56:37,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810333328] [2021-11-06 18:56:37,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:56:37,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:56:37,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:56:37,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:56:37,852 INFO L87 Difference]: Start difference. First operand 25166 states and 28854 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:38,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:56:38,450 INFO L93 Difference]: Finished difference Result 25166 states and 28854 transitions. [2021-11-06 18:56:38,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:56:38,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-06 18:56:38,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:56:38,504 INFO L225 Difference]: With dead ends: 25166 [2021-11-06 18:56:38,505 INFO L226 Difference]: Without dead ends: 25160 [2021-11-06 18:56:38,517 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:56:38,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25160 states. [2021-11-06 18:56:39,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25160 to 25160. [2021-11-06 18:56:39,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25160 states, 25072 states have (on average 1.1484524569240586) internal successors, (28794), 25132 states have internal predecessors, (28794), 18 states have call successors, (18), 12 states have call predecessors, (18), 18 states have return successors, (36), 24 states have call predecessors, (36), 18 states have call successors, (36) [2021-11-06 18:56:39,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25160 states to 25160 states and 28848 transitions. [2021-11-06 18:56:39,211 INFO L78 Accepts]: Start accepts. Automaton has 25160 states and 28848 transitions. Word has length 71 [2021-11-06 18:56:39,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:56:39,211 INFO L470 AbstractCegarLoop]: Abstraction has 25160 states and 28848 transitions. [2021-11-06 18:56:39,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:39,212 INFO L276 IsEmpty]: Start isEmpty. Operand 25160 states and 28848 transitions. [2021-11-06 18:56:39,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-06 18:56:39,213 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:56:39,213 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:56:39,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 18:56:39,213 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [axnet_tx_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr2ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-06 18:56:39,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:56:39,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1247321216, now seen corresponding path program 1 times [2021-11-06 18:56:39,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:56:39,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079959978] [2021-11-06 18:56:39,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:56:39,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:56:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:56:39,354 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 18:56:39,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:56:39,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079959978] [2021-11-06 18:56:39,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079959978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:56:39,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:56:39,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:56:39,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385649551] [2021-11-06 18:56:39,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:56:39,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:56:39,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:56:39,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:56:39,357 INFO L87 Difference]: Start difference. First operand 25160 states and 28848 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:39,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:56:39,875 INFO L93 Difference]: Finished difference Result 25160 states and 28848 transitions. [2021-11-06 18:56:39,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:56:39,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-06 18:56:39,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:56:39,920 INFO L225 Difference]: With dead ends: 25160 [2021-11-06 18:56:39,920 INFO L226 Difference]: Without dead ends: 25154 [2021-11-06 18:56:39,931 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:56:39,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25154 states. [2021-11-06 18:56:40,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25154 to 25154. [2021-11-06 18:56:40,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25154 states, 25069 states have (on average 1.1483505524751685) internal successors, (28788), 25126 states have internal predecessors, (28788), 18 states have call successors, (18), 12 states have call predecessors, (18), 18 states have return successors, (36), 24 states have call predecessors, (36), 18 states have call successors, (36) [2021-11-06 18:56:40,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25154 states to 25154 states and 28842 transitions. [2021-11-06 18:56:40,737 INFO L78 Accepts]: Start accepts. Automaton has 25154 states and 28842 transitions. Word has length 73 [2021-11-06 18:56:40,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:56:40,737 INFO L470 AbstractCegarLoop]: Abstraction has 25154 states and 28842 transitions. [2021-11-06 18:56:40,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:40,738 INFO L276 IsEmpty]: Start isEmpty. Operand 25154 states and 28842 transitions. [2021-11-06 18:56:40,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 18:56:40,742 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:56:40,743 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:56:40,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 18:56:40,743 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [axnet_tx_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr2ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-06 18:56:40,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:56:40,743 INFO L85 PathProgramCache]: Analyzing trace with hash -379592509, now seen corresponding path program 1 times [2021-11-06 18:56:40,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:56:40,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952392907] [2021-11-06 18:56:40,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:56:40,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:56:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:56:41,051 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 18:56:41,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:56:41,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952392907] [2021-11-06 18:56:41,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952392907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:56:41,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:56:41,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:56:41,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284238777] [2021-11-06 18:56:41,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:56:41,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:56:41,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:56:41,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:56:41,055 INFO L87 Difference]: Start difference. First operand 25154 states and 28842 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:41,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:56:41,729 INFO L93 Difference]: Finished difference Result 25154 states and 28842 transitions. [2021-11-06 18:56:41,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:56:41,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-06 18:56:41,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:56:41,780 INFO L225 Difference]: With dead ends: 25154 [2021-11-06 18:56:41,780 INFO L226 Difference]: Without dead ends: 25148 [2021-11-06 18:56:41,790 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:56:41,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25148 states. [2021-11-06 18:56:42,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25148 to 25148. [2021-11-06 18:56:42,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25148 states, 25066 states have (on average 1.1482486236336074) internal successors, (28782), 25120 states have internal predecessors, (28782), 18 states have call successors, (18), 12 states have call predecessors, (18), 18 states have return successors, (36), 24 states have call predecessors, (36), 18 states have call successors, (36) [2021-11-06 18:56:42,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25148 states to 25148 states and 28836 transitions. [2021-11-06 18:56:42,459 INFO L78 Accepts]: Start accepts. Automaton has 25148 states and 28836 transitions. Word has length 75 [2021-11-06 18:56:42,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:56:42,460 INFO L470 AbstractCegarLoop]: Abstraction has 25148 states and 28836 transitions. [2021-11-06 18:56:42,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:42,460 INFO L276 IsEmpty]: Start isEmpty. Operand 25148 states and 28836 transitions. [2021-11-06 18:56:42,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-06 18:56:42,462 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:56:42,462 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:56:42,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 18:56:42,462 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [axnet_tx_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr2ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-06 18:56:42,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:56:42,463 INFO L85 PathProgramCache]: Analyzing trace with hash 284039814, now seen corresponding path program 1 times [2021-11-06 18:56:42,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:56:42,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035736259] [2021-11-06 18:56:42,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:56:42,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:56:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:56:42,600 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 18:56:42,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:56:42,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035736259] [2021-11-06 18:56:42,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035736259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:56:42,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:56:42,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:56:42,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706906682] [2021-11-06 18:56:42,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:56:42,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:56:42,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:56:42,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:56:42,602 INFO L87 Difference]: Start difference. First operand 25148 states and 28836 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:43,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:56:43,371 INFO L93 Difference]: Finished difference Result 25148 states and 28836 transitions. [2021-11-06 18:56:43,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:56:43,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-06 18:56:43,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:56:43,417 INFO L225 Difference]: With dead ends: 25148 [2021-11-06 18:56:43,417 INFO L226 Difference]: Without dead ends: 25142 [2021-11-06 18:56:43,430 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:56:43,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25142 states. [2021-11-06 18:56:44,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25142 to 25142. [2021-11-06 18:56:44,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25142 states, 25063 states have (on average 1.1481466703906156) internal successors, (28776), 25114 states have internal predecessors, (28776), 18 states have call successors, (18), 12 states have call predecessors, (18), 18 states have return successors, (36), 24 states have call predecessors, (36), 18 states have call successors, (36) [2021-11-06 18:56:44,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25142 states to 25142 states and 28830 transitions. [2021-11-06 18:56:44,287 INFO L78 Accepts]: Start accepts. Automaton has 25142 states and 28830 transitions. Word has length 77 [2021-11-06 18:56:44,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:56:44,287 INFO L470 AbstractCegarLoop]: Abstraction has 25142 states and 28830 transitions. [2021-11-06 18:56:44,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:44,287 INFO L276 IsEmpty]: Start isEmpty. Operand 25142 states and 28830 transitions. [2021-11-06 18:56:44,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-06 18:56:44,291 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:56:44,291 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:56:44,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 18:56:44,291 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION === [axnet_tx_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr2ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-06 18:56:44,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:56:44,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1915424567, now seen corresponding path program 1 times [2021-11-06 18:56:44,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:56:44,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976342815] [2021-11-06 18:56:44,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:56:44,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:56:44,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:56:44,427 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 18:56:44,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:56:44,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976342815] [2021-11-06 18:56:44,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976342815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:56:44,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:56:44,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:56:44,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908763579] [2021-11-06 18:56:44,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:56:44,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:56:44,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:56:44,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:56:44,430 INFO L87 Difference]: Start difference. First operand 25142 states and 28830 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:45,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:56:45,051 INFO L93 Difference]: Finished difference Result 25142 states and 28830 transitions. [2021-11-06 18:56:45,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:56:45,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-06 18:56:45,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:56:45,091 INFO L225 Difference]: With dead ends: 25142 [2021-11-06 18:56:45,091 INFO L226 Difference]: Without dead ends: 25136 [2021-11-06 18:56:45,102 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:56:45,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25136 states. [2021-11-06 18:56:46,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25136 to 25136. [2021-11-06 18:56:46,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25136 states, 25060 states have (on average 1.1480446927374302) internal successors, (28770), 25108 states have internal predecessors, (28770), 18 states have call successors, (18), 12 states have call predecessors, (18), 18 states have return successors, (36), 24 states have call predecessors, (36), 18 states have call successors, (36) [2021-11-06 18:56:46,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25136 states to 25136 states and 28824 transitions. [2021-11-06 18:56:46,140 INFO L78 Accepts]: Start accepts. Automaton has 25136 states and 28824 transitions. Word has length 79 [2021-11-06 18:56:46,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:56:46,140 INFO L470 AbstractCegarLoop]: Abstraction has 25136 states and 28824 transitions. [2021-11-06 18:56:46,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:46,141 INFO L276 IsEmpty]: Start isEmpty. Operand 25136 states and 28824 transitions. [2021-11-06 18:56:46,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-06 18:56:46,142 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:56:46,143 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:56:46,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 18:56:46,143 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [axnet_tx_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr2ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-06 18:56:46,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:56:46,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1818182540, now seen corresponding path program 1 times [2021-11-06 18:56:46,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:56:46,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197199796] [2021-11-06 18:56:46,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:56:46,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:56:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:56:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 18:56:46,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:56:46,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197199796] [2021-11-06 18:56:46,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197199796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:56:46,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:56:46,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:56:46,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067448278] [2021-11-06 18:56:46,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:56:46,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:56:46,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:56:46,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:56:46,311 INFO L87 Difference]: Start difference. First operand 25136 states and 28824 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:47,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:56:47,041 INFO L93 Difference]: Finished difference Result 25136 states and 28824 transitions. [2021-11-06 18:56:47,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:56:47,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-06 18:56:47,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:56:47,081 INFO L225 Difference]: With dead ends: 25136 [2021-11-06 18:56:47,081 INFO L226 Difference]: Without dead ends: 25130 [2021-11-06 18:56:47,092 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:56:47,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25130 states. [2021-11-06 18:56:47,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25130 to 25130. [2021-11-06 18:56:47,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25130 states, 25057 states have (on average 1.1479426906652832) internal successors, (28764), 25102 states have internal predecessors, (28764), 18 states have call successors, (18), 12 states have call predecessors, (18), 18 states have return successors, (36), 24 states have call predecessors, (36), 18 states have call successors, (36) [2021-11-06 18:56:48,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25130 states to 25130 states and 28818 transitions. [2021-11-06 18:56:48,008 INFO L78 Accepts]: Start accepts. Automaton has 25130 states and 28818 transitions. Word has length 81 [2021-11-06 18:56:48,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:56:48,008 INFO L470 AbstractCegarLoop]: Abstraction has 25130 states and 28818 transitions. [2021-11-06 18:56:48,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:48,008 INFO L276 IsEmpty]: Start isEmpty. Operand 25130 states and 28818 transitions. [2021-11-06 18:56:48,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 18:56:48,010 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:56:48,010 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:56:48,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 18:56:48,011 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION === [axnet_tx_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr2ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-06 18:56:48,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:56:48,011 INFO L85 PathProgramCache]: Analyzing trace with hash -341996771, now seen corresponding path program 1 times [2021-11-06 18:56:48,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:56:48,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040237255] [2021-11-06 18:56:48,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:56:48,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:56:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:56:48,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:56:48,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:56:48,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040237255] [2021-11-06 18:56:48,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040237255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:56:48,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:56:48,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:56:48,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754197078] [2021-11-06 18:56:48,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:56:48,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:56:48,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:56:48,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:56:48,164 INFO L87 Difference]: Start difference. First operand 25130 states and 28818 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:52,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:56:52,082 INFO L93 Difference]: Finished difference Result 52670 states and 60826 transitions. [2021-11-06 18:56:52,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:56:52,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-06 18:56:52,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:56:52,134 INFO L225 Difference]: With dead ends: 52670 [2021-11-06 18:56:52,134 INFO L226 Difference]: Without dead ends: 27658 [2021-11-06 18:56:52,172 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:56:52,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27658 states. [2021-11-06 18:56:53,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27658 to 26384. [2021-11-06 18:56:53,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26384 states, 26311 states have (on average 1.1560944091824712) internal successors, (30418), 26356 states have internal predecessors, (30418), 18 states have call successors, (18), 12 states have call predecessors, (18), 18 states have return successors, (36), 24 states have call predecessors, (36), 18 states have call successors, (36) [2021-11-06 18:56:53,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26384 states to 26384 states and 30472 transitions. [2021-11-06 18:56:53,129 INFO L78 Accepts]: Start accepts. Automaton has 26384 states and 30472 transitions. Word has length 83 [2021-11-06 18:56:53,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:56:53,129 INFO L470 AbstractCegarLoop]: Abstraction has 26384 states and 30472 transitions. [2021-11-06 18:56:53,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:53,130 INFO L276 IsEmpty]: Start isEmpty. Operand 26384 states and 30472 transitions. [2021-11-06 18:56:53,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 18:56:53,131 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:56:53,131 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:56:53,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 18:56:53,131 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [axnet_tx_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr2ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-06 18:56:53,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:56:53,132 INFO L85 PathProgramCache]: Analyzing trace with hash -778046769, now seen corresponding path program 1 times [2021-11-06 18:56:53,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:56:53,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550354114] [2021-11-06 18:56:53,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:56:53,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:56:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:56:53,268 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 18:56:53,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:56:53,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550354114] [2021-11-06 18:56:53,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550354114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:56:53,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:56:53,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:56:53,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558692261] [2021-11-06 18:56:53,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:56:53,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:56:53,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:56:53,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:56:53,270 INFO L87 Difference]: Start difference. First operand 26384 states and 30472 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:54,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:56:54,100 INFO L93 Difference]: Finished difference Result 26384 states and 30472 transitions. [2021-11-06 18:56:54,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:56:54,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-06 18:56:54,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:56:54,143 INFO L225 Difference]: With dead ends: 26384 [2021-11-06 18:56:54,144 INFO L226 Difference]: Without dead ends: 26378 [2021-11-06 18:56:54,155 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:56:54,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26378 states. [2021-11-06 18:56:55,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26378 to 26378. [2021-11-06 18:56:55,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26378 states, 26308 states have (on average 1.1559981754599362) internal successors, (30412), 26350 states have internal predecessors, (30412), 18 states have call successors, (18), 12 states have call predecessors, (18), 18 states have return successors, (36), 24 states have call predecessors, (36), 18 states have call successors, (36) [2021-11-06 18:56:55,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26378 states to 26378 states and 30466 transitions. [2021-11-06 18:56:55,162 INFO L78 Accepts]: Start accepts. Automaton has 26378 states and 30466 transitions. Word has length 83 [2021-11-06 18:56:55,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:56:55,163 INFO L470 AbstractCegarLoop]: Abstraction has 26378 states and 30466 transitions. [2021-11-06 18:56:55,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:55,163 INFO L276 IsEmpty]: Start isEmpty. Operand 26378 states and 30466 transitions. [2021-11-06 18:56:55,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 18:56:55,164 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:56:55,164 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:56:55,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 18:56:55,165 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [axnet_tx_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr2ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-06 18:56:55,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:56:55,165 INFO L85 PathProgramCache]: Analyzing trace with hash -378413422, now seen corresponding path program 1 times [2021-11-06 18:56:55,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:56:55,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406789120] [2021-11-06 18:56:55,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:56:55,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:56:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:56:55,315 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 18:56:55,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:56:55,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406789120] [2021-11-06 18:56:55,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406789120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:56:55,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:56:55,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:56:55,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552356104] [2021-11-06 18:56:55,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:56:55,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:56:55,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:56:55,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:56:55,318 INFO L87 Difference]: Start difference. First operand 26378 states and 30466 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:56,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:56:56,222 INFO L93 Difference]: Finished difference Result 27684 states and 31866 transitions. [2021-11-06 18:56:56,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:56:56,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-06 18:56:56,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:56:56,268 INFO L225 Difference]: With dead ends: 27684 [2021-11-06 18:56:56,269 INFO L226 Difference]: Without dead ends: 27678 [2021-11-06 18:56:56,283 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:56:56,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27678 states. [2021-11-06 18:56:57,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27678 to 26372. [2021-11-06 18:56:57,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26372 states, 26305 states have (on average 1.1559019197871128) internal successors, (30406), 26344 states have internal predecessors, (30406), 18 states have call successors, (18), 12 states have call predecessors, (18), 18 states have return successors, (36), 24 states have call predecessors, (36), 18 states have call successors, (36) [2021-11-06 18:56:57,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26372 states to 26372 states and 30460 transitions. [2021-11-06 18:56:57,173 INFO L78 Accepts]: Start accepts. Automaton has 26372 states and 30460 transitions. Word has length 85 [2021-11-06 18:56:57,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:56:57,173 INFO L470 AbstractCegarLoop]: Abstraction has 26372 states and 30460 transitions. [2021-11-06 18:56:57,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:57,173 INFO L276 IsEmpty]: Start isEmpty. Operand 26372 states and 30460 transitions. [2021-11-06 18:56:57,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 18:56:57,175 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:56:57,175 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:56:57,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 18:56:57,175 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [axnet_tx_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr2ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-06 18:56:57,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:56:57,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1417144021, now seen corresponding path program 1 times [2021-11-06 18:56:57,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:56:57,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937359810] [2021-11-06 18:56:57,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:56:57,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:56:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:56:57,323 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 18:56:57,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:56:57,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937359810] [2021-11-06 18:56:57,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937359810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:56:57,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:56:57,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:56:57,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664920906] [2021-11-06 18:56:57,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:56:57,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:56:57,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:56:57,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:56:57,325 INFO L87 Difference]: Start difference. First operand 26372 states and 30460 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:58,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:56:58,226 INFO L93 Difference]: Finished difference Result 26372 states and 30460 transitions. [2021-11-06 18:56:58,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:56:58,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-06 18:56:58,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:56:58,272 INFO L225 Difference]: With dead ends: 26372 [2021-11-06 18:56:58,272 INFO L226 Difference]: Without dead ends: 26366 [2021-11-06 18:56:58,285 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:56:58,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26366 states. [2021-11-06 18:56:59,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26366 to 26366. [2021-11-06 18:56:59,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26366 states, 26302 states have (on average 1.15580564215649) internal successors, (30400), 26338 states have internal predecessors, (30400), 18 states have call successors, (18), 12 states have call predecessors, (18), 18 states have return successors, (36), 24 states have call predecessors, (36), 18 states have call successors, (36) [2021-11-06 18:56:59,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26366 states to 26366 states and 30454 transitions. [2021-11-06 18:56:59,351 INFO L78 Accepts]: Start accepts. Automaton has 26366 states and 30454 transitions. Word has length 87 [2021-11-06 18:56:59,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:56:59,351 INFO L470 AbstractCegarLoop]: Abstraction has 26366 states and 30454 transitions. [2021-11-06 18:56:59,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:59,352 INFO L276 IsEmpty]: Start isEmpty. Operand 26366 states and 30454 transitions. [2021-11-06 18:56:59,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-06 18:56:59,353 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:56:59,353 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:56:59,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 18:56:59,353 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [axnet_tx_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, axnet_tx_timeoutErr2ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-06 18:56:59,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:56:59,354 INFO L85 PathProgramCache]: Analyzing trace with hash 370994072, now seen corresponding path program 1 times [2021-11-06 18:56:59,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:56:59,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705754073] [2021-11-06 18:56:59,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:56:59,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:56:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:56:59,492 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 18:56:59,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:56:59,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705754073] [2021-11-06 18:56:59,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705754073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:56:59,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:56:59,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:56:59,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554412319] [2021-11-06 18:56:59,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:56:59,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:56:59,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:56:59,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:56:59,494 INFO L87 Difference]: Start difference. First operand 26366 states and 30454 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)