./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-irda-via-ircc.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-irda-via-ircc.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 67e7778ced54570c612880d3f2f5d48e6e2d3dc55afd632628e45d31cdc74c58 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 19:05:38,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 19:05:38,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 19:05:38,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 19:05:38,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 19:05:38,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 19:05:38,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 19:05:38,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 19:05:38,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 19:05:38,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 19:05:38,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 19:05:38,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 19:05:38,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 19:05:38,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 19:05:38,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 19:05:38,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 19:05:38,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 19:05:38,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 19:05:38,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 19:05:38,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 19:05:38,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 19:05:38,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 19:05:38,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 19:05:38,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 19:05:38,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 19:05:38,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 19:05:38,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 19:05:38,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 19:05:38,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 19:05:38,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 19:05:38,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 19:05:38,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 19:05:38,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 19:05:38,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 19:05:38,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 19:05:38,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 19:05:38,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 19:05:38,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 19:05:38,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 19:05:38,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 19:05:38,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 19:05:38,537 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 19:05:38,561 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 19:05:38,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 19:05:38,562 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 19:05:38,562 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 19:05:38,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 19:05:38,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 19:05:38,563 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 19:05:38,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 19:05:38,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 19:05:38,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 19:05:38,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 19:05:38,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 19:05:38,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 19:05:38,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 19:05:38,565 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 19:05:38,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 19:05:38,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 19:05:38,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 19:05:38,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 19:05:38,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:05:38,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 19:05:38,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 19:05:38,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 19:05:38,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 19:05:38,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 19:05:38,566 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 19:05:38,566 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 19:05:38,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 19:05:38,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 19:05:38,568 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67e7778ced54570c612880d3f2f5d48e6e2d3dc55afd632628e45d31cdc74c58 [2021-11-06 19:05:38,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 19:05:38,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 19:05:38,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 19:05:38,800 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 19:05:38,801 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 19:05:38,802 INFO L432 ainManager$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-irda-via-ircc.cil.i [2021-11-06 19:05:38,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dc0d705e/e186cb8281f84a789a5ac31e308fd3b0/FLAG38986977f [2021-11-06 19:05:39,477 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 19:05:39,477 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-irda-via-ircc.cil.i [2021-11-06 19:05:39,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dc0d705e/e186cb8281f84a789a5ac31e308fd3b0/FLAG38986977f [2021-11-06 19:05:39,608 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dc0d705e/e186cb8281f84a789a5ac31e308fd3b0 [2021-11-06 19:05:39,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 19:05:39,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 19:05:39,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 19:05:39,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 19:05:39,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 19:05:39,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:05:39" (1/1) ... [2021-11-06 19:05:39,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bbf23a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:39, skipping insertion in model container [2021-11-06 19:05:39,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:05:39" (1/1) ... [2021-11-06 19:05:39,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 19:05:39,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 19:05:41,587 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-irda-via-ircc.cil.i[329615,329628] [2021-11-06 19:05:41,589 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-irda-via-ircc.cil.i[329784,329797] [2021-11-06 19:05:41,590 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-irda-via-ircc.cil.i[329951,329964] [2021-11-06 19:05:41,590 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-irda-via-ircc.cil.i[330119,330132] [2021-11-06 19:05:41,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:05:41,619 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 19:05:41,872 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-irda-via-ircc.cil.i[329615,329628] [2021-11-06 19:05:41,872 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-irda-via-ircc.cil.i[329784,329797] [2021-11-06 19:05:41,873 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-irda-via-ircc.cil.i[329951,329964] [2021-11-06 19:05:41,873 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-irda-via-ircc.cil.i[330119,330132] [2021-11-06 19:05:41,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:05:41,984 INFO L208 MainTranslator]: Completed translation [2021-11-06 19:05:41,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:41 WrapperNode [2021-11-06 19:05:41,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 19:05:41,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 19:05:41,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 19:05:41,985 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 19:05:41,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:41" (1/1) ... [2021-11-06 19:05:42,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:41" (1/1) ... [2021-11-06 19:05:45,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 19:05:45,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 19:05:45,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 19:05:45,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 19:05:45,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:41" (1/1) ... [2021-11-06 19:05:45,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:41" (1/1) ... [2021-11-06 19:05:46,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:41" (1/1) ... [2021-11-06 19:05:46,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:41" (1/1) ... [2021-11-06 19:05:47,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:41" (1/1) ... [2021-11-06 19:05:47,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:41" (1/1) ... [2021-11-06 19:05:48,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:41" (1/1) ... [2021-11-06 19:05:48,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 19:05:48,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 19:05:48,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 19:05:48,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 19:05:48,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:41" (1/1) ... [2021-11-06 19:05:48,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:05:48,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:05:48,972 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 19:05:48,982 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 19:05:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 19:05:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 19:05:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 19:05:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 19:05:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 19:05:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 19:05:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 19:05:49,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 19:05:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 19:05:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 19:05:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 19:05:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 19:05:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 19:05:49,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 19:05:49,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 19:07:02,121 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-06 19:07:02,121 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 19:07:02,122 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 19:07:02,124 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 19:07:02,186 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 19:07:02,186 INFO L299 CfgBuilder]: Removed 28753 assume(true) statements. [2021-11-06 19:07:02,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:07:02 BoogieIcfgContainer [2021-11-06 19:07:02,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 19:07:02,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 19:07:02,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 19:07:02,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 19:07:02,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:05:39" (1/3) ... [2021-11-06 19:07:02,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3069bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:07:02, skipping insertion in model container [2021-11-06 19:07:02,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:41" (2/3) ... [2021-11-06 19:07:02,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3069bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:07:02, skipping insertion in model container [2021-11-06 19:07:02,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:07:02" (3/3) ... [2021-11-06 19:07:02,209 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-06 19:07:02,214 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 19:07:02,214 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2021-11-06 19:07:02,310 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 19:07:02,316 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 19:07:02,316 INFO L340 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2021-11-06 19:07:02,528 INFO L276 IsEmpty]: Start isEmpty. Operand has 22069 states, 22035 states have (on average 1.3668708872248696) internal successors, (30119), 22068 states have internal predecessors, (30119), 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 19:07:02,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-06 19:07:02,534 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:02,534 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] [2021-11-06 19:07:02,535 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-06 19:07:02,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:02,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1663244342, now seen corresponding path program 1 times [2021-11-06 19:07:02,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:02,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835356477] [2021-11-06 19:07:02,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:02,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:03,021 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 19:07:03,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:03,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835356477] [2021-11-06 19:07:03,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835356477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:03,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:03,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:03,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532516286] [2021-11-06 19:07:03,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:07:03,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:03,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:07:03,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:07:03,084 INFO L87 Difference]: Start difference. First operand has 22069 states, 22035 states have (on average 1.3668708872248696) internal successors, (30119), 22068 states have internal predecessors, (30119), 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) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 19:07:06,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:06,437 INFO L93 Difference]: Finished difference Result 65938 states and 90016 transitions. [2021-11-06 19:07:06,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:07:06,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2021-11-06 19:07:06,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:06,605 INFO L225 Difference]: With dead ends: 65938 [2021-11-06 19:07:06,605 INFO L226 Difference]: Without dead ends: 43704 [2021-11-06 19:07:06,690 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 19:07:06,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43704 states. [2021-11-06 19:07:07,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43704 to 43692. [2021-11-06 19:07:07,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43692 states, 43658 states have (on average 1.3620184158687985) internal successors, (59463), 43691 states have internal predecessors, (59463), 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 19:07:07,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43692 states to 43692 states and 59463 transitions. [2021-11-06 19:07:07,885 INFO L78 Accepts]: Start accepts. Automaton has 43692 states and 59463 transitions. Word has length 30 [2021-11-06 19:07:07,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:07,886 INFO L470 AbstractCegarLoop]: Abstraction has 43692 states and 59463 transitions. [2021-11-06 19:07:07,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 19:07:07,887 INFO L276 IsEmpty]: Start isEmpty. Operand 43692 states and 59463 transitions. [2021-11-06 19:07:07,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-06 19:07:07,888 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:07,889 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] [2021-11-06 19:07:07,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 19:07:07,889 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-06 19:07:07,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:07,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1234824287, now seen corresponding path program 1 times [2021-11-06 19:07:07,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:07,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993402734] [2021-11-06 19:07:07,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:07,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:08,214 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 19:07:08,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:08,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993402734] [2021-11-06 19:07:08,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993402734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:08,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:08,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:08,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619434775] [2021-11-06 19:07:08,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:07:08,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:08,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:07:08,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:07:08,217 INFO L87 Difference]: Start difference. First operand 43692 states and 59463 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 19:07:11,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:11,644 INFO L93 Difference]: Finished difference Result 107102 states and 145619 transitions. [2021-11-06 19:07:11,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:07:11,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2021-11-06 19:07:11,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:11,824 INFO L225 Difference]: With dead ends: 107102 [2021-11-06 19:07:11,824 INFO L226 Difference]: Without dead ends: 63454 [2021-11-06 19:07:11,916 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 19:07:12,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63454 states. [2021-11-06 19:07:13,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63454 to 62754. [2021-11-06 19:07:13,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62754 states, 62720 states have (on average 1.360172193877551) internal successors, (85310), 62753 states have internal predecessors, (85310), 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 19:07:13,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62754 states to 62754 states and 85310 transitions. [2021-11-06 19:07:13,473 INFO L78 Accepts]: Start accepts. Automaton has 62754 states and 85310 transitions. Word has length 31 [2021-11-06 19:07:13,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:13,475 INFO L470 AbstractCegarLoop]: Abstraction has 62754 states and 85310 transitions. [2021-11-06 19:07:13,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 19:07:13,476 INFO L276 IsEmpty]: Start isEmpty. Operand 62754 states and 85310 transitions. [2021-11-06 19:07:13,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-06 19:07:13,481 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:13,481 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] [2021-11-06 19:07:13,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 19:07:13,481 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-06 19:07:13,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:13,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1128421566, now seen corresponding path program 1 times [2021-11-06 19:07:13,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:13,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449373089] [2021-11-06 19:07:13,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:13,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:13,823 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 19:07:13,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:13,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449373089] [2021-11-06 19:07:13,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449373089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:13,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:13,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:13,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937701640] [2021-11-06 19:07:13,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:07:13,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:13,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:07:13,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:07:13,826 INFO L87 Difference]: Start difference. First operand 62754 states and 85310 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 19:07:17,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:17,681 INFO L93 Difference]: Finished difference Result 170594 states and 231892 transitions. [2021-11-06 19:07:17,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:07:17,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2021-11-06 19:07:17,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:18,011 INFO L225 Difference]: With dead ends: 170594 [2021-11-06 19:07:18,011 INFO L226 Difference]: Without dead ends: 107884 [2021-11-06 19:07:18,113 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 19:07:18,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107884 states. [2021-11-06 19:07:20,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107884 to 107320. [2021-11-06 19:07:20,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107320 states, 107286 states have (on average 1.3600469772384094) internal successors, (145914), 107319 states have internal predecessors, (145914), 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 19:07:20,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107320 states to 107320 states and 145914 transitions. [2021-11-06 19:07:20,639 INFO L78 Accepts]: Start accepts. Automaton has 107320 states and 145914 transitions. Word has length 36 [2021-11-06 19:07:20,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:20,639 INFO L470 AbstractCegarLoop]: Abstraction has 107320 states and 145914 transitions. [2021-11-06 19:07:20,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 19:07:20,640 INFO L276 IsEmpty]: Start isEmpty. Operand 107320 states and 145914 transitions. [2021-11-06 19:07:20,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 19:07:20,642 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:20,642 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:07:20,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 19:07:20,642 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-06 19:07:20,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:20,643 INFO L85 PathProgramCache]: Analyzing trace with hash -527361994, now seen corresponding path program 1 times [2021-11-06 19:07:20,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:20,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751276498] [2021-11-06 19:07:20,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:20,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:20,752 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:07:20,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:20,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751276498] [2021-11-06 19:07:20,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751276498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:20,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:20,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:20,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461767267] [2021-11-06 19:07:20,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:07:20,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:20,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:07:20,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:07:20,754 INFO L87 Difference]: Start difference. First operand 107320 states and 145914 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 19:07:25,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:25,993 INFO L93 Difference]: Finished difference Result 259718 states and 353068 transitions. [2021-11-06 19:07:25,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:07:25,994 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 19:07:25,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:26,341 INFO L225 Difference]: With dead ends: 259718 [2021-11-06 19:07:26,341 INFO L226 Difference]: Without dead ends: 152442 [2021-11-06 19:07:26,498 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 19:07:26,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152442 states. [2021-11-06 19:07:29,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152442 to 151878. [2021-11-06 19:07:29,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151878 states, 151844 states have (on average 1.3599351966491926) internal successors, (206498), 151877 states have internal predecessors, (206498), 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 19:07:30,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151878 states to 151878 states and 206498 transitions. [2021-11-06 19:07:30,396 INFO L78 Accepts]: Start accepts. Automaton has 151878 states and 206498 transitions. Word has length 51 [2021-11-06 19:07:30,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:30,396 INFO L470 AbstractCegarLoop]: Abstraction has 151878 states and 206498 transitions. [2021-11-06 19:07:30,397 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 19:07:30,397 INFO L276 IsEmpty]: Start isEmpty. Operand 151878 states and 206498 transitions. [2021-11-06 19:07:30,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-06 19:07:30,402 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:30,402 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:07:30,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 19:07:30,402 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-06 19:07:30,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:30,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1866639490, now seen corresponding path program 1 times [2021-11-06 19:07:30,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:30,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102724719] [2021-11-06 19:07:30,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:30,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:30,567 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:07:30,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:30,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102724719] [2021-11-06 19:07:30,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102724719] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:30,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:30,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:30,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938346095] [2021-11-06 19:07:30,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:07:30,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:30,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:07:30,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:07:30,569 INFO L87 Difference]: Start difference. First operand 151878 states and 206498 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 19:07:35,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:35,939 INFO L93 Difference]: Finished difference Result 303712 states and 412947 transitions. [2021-11-06 19:07:35,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:07:35,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2021-11-06 19:07:35,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:36,670 INFO L225 Difference]: With dead ends: 303712 [2021-11-06 19:07:36,670 INFO L226 Difference]: Without dead ends: 227649 [2021-11-06 19:07:36,814 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 19:07:37,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227649 states. [2021-11-06 19:07:41,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227649 to 227627. [2021-11-06 19:07:41,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227627 states, 227593 states have (on average 1.360046222862742) internal successors, (309537), 227626 states have internal predecessors, (309537), 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 19:07:42,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227627 states to 227627 states and 309537 transitions. [2021-11-06 19:07:42,005 INFO L78 Accepts]: Start accepts. Automaton has 227627 states and 309537 transitions. Word has length 58 [2021-11-06 19:07:42,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:42,005 INFO L470 AbstractCegarLoop]: Abstraction has 227627 states and 309537 transitions. [2021-11-06 19:07:42,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 19:07:42,006 INFO L276 IsEmpty]: Start isEmpty. Operand 227627 states and 309537 transitions. [2021-11-06 19:07:42,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-06 19:07:42,013 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:42,013 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:07:42,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 19:07:42,018 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-06 19:07:42,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:42,018 INFO L85 PathProgramCache]: Analyzing trace with hash 2124804928, now seen corresponding path program 1 times [2021-11-06 19:07:42,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:42,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917515706] [2021-11-06 19:07:42,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:42,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 19:07:42,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:42,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917515706] [2021-11-06 19:07:42,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917515706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:42,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:42,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:42,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828319064] [2021-11-06 19:07:42,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:07:42,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:42,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:07:42,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:07:42,234 INFO L87 Difference]: Start difference. First operand 227627 states and 309537 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 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)